

// The Module object: Our interface to the outside world. We import
// and export values on it. There are various ways Module can be used:
// 1. Not defined. We create it here
// 2. A function parameter, function(Module) { ..generated code.. }
// 3. pre-run appended it, var Module = {}; ..generated code..
// 4. External script tag defines var Module.
// We need to check if Module already exists (e.g. case 3 above).
// Substitution will be replaced with actual code on later stage of the build,
// this way Closure Compiler will not mangle it (e.g. case 4. above).
// Note that if you want to run closure, and also to use Module
// after the generated code, you will need to define   var Module = {};
// before the code. Then that object will be used in the code, and you
// can continue to use Module afterwards as well.
var Module = typeof Module !== 'undefined' ? Module : {};

// --pre-jses are emitted after the Module integration code, so that they can
// refer to Module (if they choose; they can also define Module)
// {{PRE_JSES}}

// Sometimes an existing Module object exists with properties
// meant to overwrite the default module functionality. Here
// we collect those properties and reapply _after_ we configure
// the current environment's defaults to avoid having to be so
// defensive during initialization.
var moduleOverrides = {};
var key;
for (key in Module) {
  if (Module.hasOwnProperty(key)) {
    moduleOverrides[key] = Module[key];
  }
}

var arguments_ = [];
var thisProgram = './this.program';
var quit_ = function(status, toThrow) {
  throw toThrow;
};

// Determine the runtime environment we are in. You can customize this by
// setting the ENVIRONMENT setting at compile time (see settings.js).

var ENVIRONMENT_IS_WEB = false;
var ENVIRONMENT_IS_WORKER = false;
var ENVIRONMENT_IS_NODE = false;
var ENVIRONMENT_IS_SHELL = false;
ENVIRONMENT_IS_WEB = typeof window === 'object';
ENVIRONMENT_IS_WORKER = typeof importScripts === 'function';
// N.b. Electron.js environment is simultaneously a NODE-environment, but
// also a web environment.
ENVIRONMENT_IS_NODE = typeof process === 'object' && typeof process.versions === 'object' && typeof process.versions.node === 'string';
ENVIRONMENT_IS_SHELL = !ENVIRONMENT_IS_WEB && !ENVIRONMENT_IS_NODE && !ENVIRONMENT_IS_WORKER;

if (Module['ENVIRONMENT']) {
  throw new Error('Module.ENVIRONMENT has been deprecated. To force the environment, use the ENVIRONMENT compile-time option (for example, -s ENVIRONMENT=web or -s ENVIRONMENT=node)');
}

// `/` should be present at the end if `scriptDirectory` is not empty
var scriptDirectory = '';
function locateFile(path) {
  if (Module['locateFile']) {
    return Module['locateFile'](path, scriptDirectory);
  }
  return scriptDirectory + path;
}

// Hooks that are implemented differently in different runtime environments.
var read_,
    readAsync,
    readBinary,
    setWindowTitle;

var nodeFS;
var nodePath;

if (ENVIRONMENT_IS_NODE) {
  if (ENVIRONMENT_IS_WORKER) {
    scriptDirectory = require('path').dirname(scriptDirectory) + '/';
  } else {
    scriptDirectory = __dirname + '/';
  }

// include: node_shell_read.js


read_ = function shell_read(filename, binary) {
  if (!nodeFS) nodeFS = require('fs');
  if (!nodePath) nodePath = require('path');
  filename = nodePath['normalize'](filename);
  return nodeFS['readFileSync'](filename, binary ? null : 'utf8');
};

readBinary = function readBinary(filename) {
  var ret = read_(filename, true);
  if (!ret.buffer) {
    ret = new Uint8Array(ret);
  }
  assert(ret.buffer);
  return ret;
};

// end include: node_shell_read.js
  if (process['argv'].length > 1) {
    thisProgram = process['argv'][1].replace(/\\/g, '/');
  }

  arguments_ = process['argv'].slice(2);

  if (typeof module !== 'undefined') {
    module['exports'] = Module;
  }

  process['on']('uncaughtException', function(ex) {
    // suppress ExitStatus exceptions from showing an error
    if (!(ex instanceof ExitStatus)) {
      throw ex;
    }
  });

  process['on']('unhandledRejection', abort);

  quit_ = function(status) {
    process['exit'](status);
  };

  Module['inspect'] = function () { return '[Emscripten Module object]'; };

} else
if (ENVIRONMENT_IS_SHELL) {

  if (typeof read != 'undefined') {
    read_ = function shell_read(f) {
      return read(f);
    };
  }

  readBinary = function readBinary(f) {
    var data;
    if (typeof readbuffer === 'function') {
      return new Uint8Array(readbuffer(f));
    }
    data = read(f, 'binary');
    assert(typeof data === 'object');
    return data;
  };

  if (typeof scriptArgs != 'undefined') {
    arguments_ = scriptArgs;
  } else if (typeof arguments != 'undefined') {
    arguments_ = arguments;
  }

  if (typeof quit === 'function') {
    quit_ = function(status) {
      quit(status);
    };
  }

  if (typeof print !== 'undefined') {
    // Prefer to use print/printErr where they exist, as they usually work better.
    if (typeof console === 'undefined') console = /** @type{!Console} */({});
    console.log = /** @type{!function(this:Console, ...*): undefined} */ (print);
    console.warn = console.error = /** @type{!function(this:Console, ...*): undefined} */ (typeof printErr !== 'undefined' ? printErr : print);
  }

} else

// Note that this includes Node.js workers when relevant (pthreads is enabled).
// Node.js workers are detected as a combination of ENVIRONMENT_IS_WORKER and
// ENVIRONMENT_IS_NODE.
if (ENVIRONMENT_IS_WEB || ENVIRONMENT_IS_WORKER) {
  if (ENVIRONMENT_IS_WORKER) { // Check worker, not web, since window could be polyfilled
    scriptDirectory = self.location.href;
  } else if (typeof document !== 'undefined' && document.currentScript) { // web
    scriptDirectory = document.currentScript.src;
  }
  // blob urls look like blob:http://site.com/etc/etc and we cannot infer anything from them.
  // otherwise, slice off the final part of the url to find the script directory.
  // if scriptDirectory does not contain a slash, lastIndexOf will return -1,
  // and scriptDirectory will correctly be replaced with an empty string.
  if (scriptDirectory.indexOf('blob:') !== 0) {
    scriptDirectory = scriptDirectory.substr(0, scriptDirectory.lastIndexOf('/')+1);
  } else {
    scriptDirectory = '';
  }

  // Differentiate the Web Worker from the Node Worker case, as reading must
  // be done differently.
  {

// include: web_or_worker_shell_read.js


  read_ = function(url) {
      var xhr = new XMLHttpRequest();
      xhr.open('GET', url, false);
      xhr.send(null);
      return xhr.responseText;
  };

  if (ENVIRONMENT_IS_WORKER) {
    readBinary = function(url) {
        var xhr = new XMLHttpRequest();
        xhr.open('GET', url, false);
        xhr.responseType = 'arraybuffer';
        xhr.send(null);
        return new Uint8Array(/** @type{!ArrayBuffer} */(xhr.response));
    };
  }

  readAsync = function(url, onload, onerror) {
    var xhr = new XMLHttpRequest();
    xhr.open('GET', url, true);
    xhr.responseType = 'arraybuffer';
    xhr.onload = function() {
      if (xhr.status == 200 || (xhr.status == 0 && xhr.response)) { // file URLs can return 0
        onload(xhr.response);
        return;
      }
      onerror();
    };
    xhr.onerror = onerror;
    xhr.send(null);
  };

// end include: web_or_worker_shell_read.js
  }

  setWindowTitle = function(title) { document.title = title };
} else
{
  throw new Error('environment detection error');
}

// Set up the out() and err() hooks, which are how we can print to stdout or
// stderr, respectively.
var out = Module['print'] || console.log.bind(console);
var err = Module['printErr'] || console.warn.bind(console);

// Merge back in the overrides
for (key in moduleOverrides) {
  if (moduleOverrides.hasOwnProperty(key)) {
    Module[key] = moduleOverrides[key];
  }
}
// Free the object hierarchy contained in the overrides, this lets the GC
// reclaim data used e.g. in memoryInitializerRequest, which is a large typed array.
moduleOverrides = null;

// Emit code to handle expected values on the Module object. This applies Module.x
// to the proper local x. This has two benefits: first, we only emit it if it is
// expected to arrive, and second, by using a local everywhere else that can be
// minified.

if (Module['arguments']) arguments_ = Module['arguments'];
if (!Object.getOwnPropertyDescriptor(Module, 'arguments')) {
  Object.defineProperty(Module, 'arguments', {
    configurable: true,
    get: function() {
      abort('Module.arguments has been replaced with plain arguments_ (the initial value can be provided on Module, but after startup the value is only looked for on a local variable of that name)')
    }
  });
}

if (Module['thisProgram']) thisProgram = Module['thisProgram'];
if (!Object.getOwnPropertyDescriptor(Module, 'thisProgram')) {
  Object.defineProperty(Module, 'thisProgram', {
    configurable: true,
    get: function() {
      abort('Module.thisProgram has been replaced with plain thisProgram (the initial value can be provided on Module, but after startup the value is only looked for on a local variable of that name)')
    }
  });
}

if (Module['quit']) quit_ = Module['quit'];
if (!Object.getOwnPropertyDescriptor(Module, 'quit')) {
  Object.defineProperty(Module, 'quit', {
    configurable: true,
    get: function() {
      abort('Module.quit has been replaced with plain quit_ (the initial value can be provided on Module, but after startup the value is only looked for on a local variable of that name)')
    }
  });
}

// perform assertions in shell.js after we set up out() and err(), as otherwise if an assertion fails it cannot print the message
// Assertions on removed incoming Module JS APIs.
assert(typeof Module['memoryInitializerPrefixURL'] === 'undefined', 'Module.memoryInitializerPrefixURL option was removed, use Module.locateFile instead');
assert(typeof Module['pthreadMainPrefixURL'] === 'undefined', 'Module.pthreadMainPrefixURL option was removed, use Module.locateFile instead');
assert(typeof Module['cdInitializerPrefixURL'] === 'undefined', 'Module.cdInitializerPrefixURL option was removed, use Module.locateFile instead');
assert(typeof Module['filePackagePrefixURL'] === 'undefined', 'Module.filePackagePrefixURL option was removed, use Module.locateFile instead');
assert(typeof Module['read'] === 'undefined', 'Module.read option was removed (modify read_ in JS)');
assert(typeof Module['readAsync'] === 'undefined', 'Module.readAsync option was removed (modify readAsync in JS)');
assert(typeof Module['readBinary'] === 'undefined', 'Module.readBinary option was removed (modify readBinary in JS)');
assert(typeof Module['setWindowTitle'] === 'undefined', 'Module.setWindowTitle option was removed (modify setWindowTitle in JS)');
assert(typeof Module['TOTAL_MEMORY'] === 'undefined', 'Module.TOTAL_MEMORY has been renamed Module.INITIAL_MEMORY');

if (!Object.getOwnPropertyDescriptor(Module, 'read')) {
  Object.defineProperty(Module, 'read', {
    configurable: true,
    get: function() {
      abort('Module.read has been replaced with plain read_ (the initial value can be provided on Module, but after startup the value is only looked for on a local variable of that name)')
    }
  });
}

if (!Object.getOwnPropertyDescriptor(Module, 'readAsync')) {
  Object.defineProperty(Module, 'readAsync', {
    configurable: true,
    get: function() {
      abort('Module.readAsync has been replaced with plain readAsync (the initial value can be provided on Module, but after startup the value is only looked for on a local variable of that name)')
    }
  });
}

if (!Object.getOwnPropertyDescriptor(Module, 'readBinary')) {
  Object.defineProperty(Module, 'readBinary', {
    configurable: true,
    get: function() {
      abort('Module.readBinary has been replaced with plain readBinary (the initial value can be provided on Module, but after startup the value is only looked for on a local variable of that name)')
    }
  });
}

if (!Object.getOwnPropertyDescriptor(Module, 'setWindowTitle')) {
  Object.defineProperty(Module, 'setWindowTitle', {
    configurable: true,
    get: function() {
      abort('Module.setWindowTitle has been replaced with plain setWindowTitle (the initial value can be provided on Module, but after startup the value is only looked for on a local variable of that name)')
    }
  });
}
var IDBFS = 'IDBFS is no longer included by default; build with -lidbfs.js';
var PROXYFS = 'PROXYFS is no longer included by default; build with -lproxyfs.js';
var WORKERFS = 'WORKERFS is no longer included by default; build with -lworkerfs.js';
var NODEFS = 'NODEFS is no longer included by default; build with -lnodefs.js';




var STACK_ALIGN = 16;

function alignMemory(size, factor) {
  if (!factor) factor = STACK_ALIGN; // stack alignment (16-byte) by default
  return Math.ceil(size / factor) * factor;
}

function getNativeTypeSize(type) {
  switch (type) {
    case 'i1': case 'i8': return 1;
    case 'i16': return 2;
    case 'i32': return 4;
    case 'i64': return 8;
    case 'float': return 4;
    case 'double': return 8;
    default: {
      if (type[type.length-1] === '*') {
        return 4; // A pointer
      } else if (type[0] === 'i') {
        var bits = Number(type.substr(1));
        assert(bits % 8 === 0, 'getNativeTypeSize invalid bits ' + bits + ', type ' + type);
        return bits / 8;
      } else {
        return 0;
      }
    }
  }
}

function warnOnce(text) {
  if (!warnOnce.shown) warnOnce.shown = {};
  if (!warnOnce.shown[text]) {
    warnOnce.shown[text] = 1;
    err(text);
  }
}

// include: runtime_functions.js


// Wraps a JS function as a wasm function with a given signature.
function convertJsFunctionToWasm(func, sig) {

  // If the type reflection proposal is available, use the new
  // "WebAssembly.Function" constructor.
  // Otherwise, construct a minimal wasm module importing the JS function and
  // re-exporting it.
  if (typeof WebAssembly.Function === "function") {
    var typeNames = {
      'i': 'i32',
      'j': 'i64',
      'f': 'f32',
      'd': 'f64'
    };
    var type = {
      parameters: [],
      results: sig[0] == 'v' ? [] : [typeNames[sig[0]]]
    };
    for (var i = 1; i < sig.length; ++i) {
      type.parameters.push(typeNames[sig[i]]);
    }
    return new WebAssembly.Function(type, func);
  }

  // The module is static, with the exception of the type section, which is
  // generated based on the signature passed in.
  var typeSection = [
    0x01, // id: section,
    0x00, // length: 0 (placeholder)
    0x01, // count: 1
    0x60, // form: func
  ];
  var sigRet = sig.slice(0, 1);
  var sigParam = sig.slice(1);
  var typeCodes = {
    'i': 0x7f, // i32
    'j': 0x7e, // i64
    'f': 0x7d, // f32
    'd': 0x7c, // f64
  };

  // Parameters, length + signatures
  typeSection.push(sigParam.length);
  for (var i = 0; i < sigParam.length; ++i) {
    typeSection.push(typeCodes[sigParam[i]]);
  }

  // Return values, length + signatures
  // With no multi-return in MVP, either 0 (void) or 1 (anything else)
  if (sigRet == 'v') {
    typeSection.push(0x00);
  } else {
    typeSection = typeSection.concat([0x01, typeCodes[sigRet]]);
  }

  // Write the overall length of the type section back into the section header
  // (excepting the 2 bytes for the section id and length)
  typeSection[1] = typeSection.length - 2;

  // Rest of the module is static
  var bytes = new Uint8Array([
    0x00, 0x61, 0x73, 0x6d, // magic ("\0asm")
    0x01, 0x00, 0x00, 0x00, // version: 1
  ].concat(typeSection, [
    0x02, 0x07, // import section
      // (import "e" "f" (func 0 (type 0)))
      0x01, 0x01, 0x65, 0x01, 0x66, 0x00, 0x00,
    0x07, 0x05, // export section
      // (export "f" (func 0 (type 0)))
      0x01, 0x01, 0x66, 0x00, 0x00,
  ]));

   // We can compile this wasm module synchronously because it is very small.
  // This accepts an import (at "e.f"), that it reroutes to an export (at "f")
  var module = new WebAssembly.Module(bytes);
  var instance = new WebAssembly.Instance(module, {
    'e': {
      'f': func
    }
  });
  var wrappedFunc = instance.exports['f'];
  return wrappedFunc;
}

var freeTableIndexes = [];

// Weak map of functions in the table to their indexes, created on first use.
var functionsInTableMap;

function getEmptyTableSlot() {
  // Reuse a free index if there is one, otherwise grow.
  if (freeTableIndexes.length) {
    return freeTableIndexes.pop();
  }
  // Grow the table
  try {
    wasmTable.grow(1);
  } catch (err) {
    if (!(err instanceof RangeError)) {
      throw err;
    }
    throw 'Unable to grow wasm table. Set ALLOW_TABLE_GROWTH.';
  }
  return wasmTable.length - 1;
}

// Add a wasm function to the table.
function addFunctionWasm(func, sig) {
  // Check if the function is already in the table, to ensure each function
  // gets a unique index. First, create the map if this is the first use.
  if (!functionsInTableMap) {
    functionsInTableMap = new WeakMap();
    for (var i = 0; i < wasmTable.length; i++) {
      var item = wasmTable.get(i);
      // Ignore null values.
      if (item) {
        functionsInTableMap.set(item, i);
      }
    }
  }
  if (functionsInTableMap.has(func)) {
    return functionsInTableMap.get(func);
  }

  // It's not in the table, add it now.

  var ret = getEmptyTableSlot();

  // Set the new value.
  try {
    // Attempting to call this with JS function will cause of table.set() to fail
    wasmTable.set(ret, func);
  } catch (err) {
    if (!(err instanceof TypeError)) {
      throw err;
    }
    assert(typeof sig !== 'undefined', 'Missing signature argument to addFunction: ' + func);
    var wrapped = convertJsFunctionToWasm(func, sig);
    wasmTable.set(ret, wrapped);
  }

  functionsInTableMap.set(func, ret);

  return ret;
}

function removeFunction(index) {
  functionsInTableMap.delete(wasmTable.get(index));
  freeTableIndexes.push(index);
}

// 'sig' parameter is required for the llvm backend but only when func is not
// already a WebAssembly function.
function addFunction(func, sig) {
  assert(typeof func !== 'undefined');

  return addFunctionWasm(func, sig);
}

// end include: runtime_functions.js
// include: runtime_debug.js


// end include: runtime_debug.js
var tempRet0 = 0;

var setTempRet0 = function(value) {
  tempRet0 = value;
};

var getTempRet0 = function() {
  return tempRet0;
};



// === Preamble library stuff ===

// Documentation for the public APIs defined in this file must be updated in:
//    site/source/docs/api_reference/preamble.js.rst
// A prebuilt local version of the documentation is available at:
//    site/build/text/docs/api_reference/preamble.js.txt
// You can also build docs locally as HTML or other formats in site/
// An online HTML version (which may be of a different version of Emscripten)
//    is up at http://kripken.github.io/emscripten-site/docs/api_reference/preamble.js.html

var wasmBinary;
if (Module['wasmBinary']) wasmBinary = Module['wasmBinary'];
if (!Object.getOwnPropertyDescriptor(Module, 'wasmBinary')) {
  Object.defineProperty(Module, 'wasmBinary', {
    configurable: true,
    get: function() {
      abort('Module.wasmBinary has been replaced with plain wasmBinary (the initial value can be provided on Module, but after startup the value is only looked for on a local variable of that name)')
    }
  });
}
var noExitRuntime = Module['noExitRuntime'] || true;
if (!Object.getOwnPropertyDescriptor(Module, 'noExitRuntime')) {
  Object.defineProperty(Module, 'noExitRuntime', {
    configurable: true,
    get: function() {
      abort('Module.noExitRuntime has been replaced with plain noExitRuntime (the initial value can be provided on Module, but after startup the value is only looked for on a local variable of that name)')
    }
  });
}

if (typeof WebAssembly !== 'object') {
  abort('no native wasm support detected');
}

// include: runtime_safe_heap.js


// In MINIMAL_RUNTIME, setValue() and getValue() are only available when building with safe heap enabled, for heap safety checking.
// In traditional runtime, setValue() and getValue() are always available (although their use is highly discouraged due to perf penalties)

/** @param {number} ptr
    @param {number} value
    @param {string} type
    @param {number|boolean=} noSafe */
function setValue(ptr, value, type, noSafe) {
  type = type || 'i8';
  if (type.charAt(type.length-1) === '*') type = 'i32'; // pointers are 32-bit
    switch (type) {
      case 'i1': HEAP8[((ptr)>>0)] = value; break;
      case 'i8': HEAP8[((ptr)>>0)] = value; break;
      case 'i16': HEAP16[((ptr)>>1)] = value; break;
      case 'i32': HEAP32[((ptr)>>2)] = value; break;
      case 'i64': (tempI64 = [value>>>0,(tempDouble=value,(+(Math.abs(tempDouble))) >= 1.0 ? (tempDouble > 0.0 ? ((Math.min((+(Math.floor((tempDouble)/4294967296.0))), 4294967295.0))|0)>>>0 : (~~((+(Math.ceil((tempDouble - +(((~~(tempDouble)))>>>0))/4294967296.0)))))>>>0) : 0)],HEAP32[((ptr)>>2)] = tempI64[0],HEAP32[(((ptr)+(4))>>2)] = tempI64[1]); break;
      case 'float': HEAPF32[((ptr)>>2)] = value; break;
      case 'double': HEAPF64[((ptr)>>3)] = value; break;
      default: abort('invalid type for setValue: ' + type);
    }
}

/** @param {number} ptr
    @param {string} type
    @param {number|boolean=} noSafe */
function getValue(ptr, type, noSafe) {
  type = type || 'i8';
  if (type.charAt(type.length-1) === '*') type = 'i32'; // pointers are 32-bit
    switch (type) {
      case 'i1': return HEAP8[((ptr)>>0)];
      case 'i8': return HEAP8[((ptr)>>0)];
      case 'i16': return HEAP16[((ptr)>>1)];
      case 'i32': return HEAP32[((ptr)>>2)];
      case 'i64': return HEAP32[((ptr)>>2)];
      case 'float': return HEAPF32[((ptr)>>2)];
      case 'double': return HEAPF64[((ptr)>>3)];
      default: abort('invalid type for getValue: ' + type);
    }
  return null;
}

// end include: runtime_safe_heap.js
// Wasm globals

var wasmMemory;

//========================================
// Runtime essentials
//========================================

// whether we are quitting the application. no code should run after this.
// set in exit() and abort()
var ABORT = false;

// set by exit() and abort().  Passed to 'onExit' handler.
// NOTE: This is also used as the process return code code in shell environments
// but only when noExitRuntime is false.
var EXITSTATUS;

/** @type {function(*, string=)} */
function assert(condition, text) {
  if (!condition) {
    abort('Assertion failed: ' + text);
  }
}

// Returns the C function with a specified identifier (for C++, you need to do manual name mangling)
function getCFunc(ident) {
  var func = Module['_' + ident]; // closure exported function
  assert(func, 'Cannot call unknown function ' + ident + ', make sure it is exported');
  return func;
}

// C calling interface.
/** @param {string|null=} returnType
    @param {Array=} argTypes
    @param {Arguments|Array=} args
    @param {Object=} opts */
function ccall(ident, returnType, argTypes, args, opts) {
  // For fast lookup of conversion functions
  var toC = {
    'string': function(str) {
      var ret = 0;
      if (str !== null && str !== undefined && str !== 0) { // null string
        // at most 4 bytes per UTF-8 code point, +1 for the trailing '\0'
        var len = (str.length << 2) + 1;
        ret = stackAlloc(len);
        stringToUTF8(str, ret, len);
      }
      return ret;
    },
    'array': function(arr) {
      var ret = stackAlloc(arr.length);
      writeArrayToMemory(arr, ret);
      return ret;
    }
  };

  function convertReturnValue(ret) {
    if (returnType === 'string') return UTF8ToString(ret);
    if (returnType === 'boolean') return Boolean(ret);
    return ret;
  }

  var func = getCFunc(ident);
  var cArgs = [];
  var stack = 0;
  assert(returnType !== 'array', 'Return type should not be "array".');
  if (args) {
    for (var i = 0; i < args.length; i++) {
      var converter = toC[argTypes[i]];
      if (converter) {
        if (stack === 0) stack = stackSave();
        cArgs[i] = converter(args[i]);
      } else {
        cArgs[i] = args[i];
      }
    }
  }
  var ret = func.apply(null, cArgs);

  ret = convertReturnValue(ret);
  if (stack !== 0) stackRestore(stack);
  return ret;
}

/** @param {string=} returnType
    @param {Array=} argTypes
    @param {Object=} opts */
function cwrap(ident, returnType, argTypes, opts) {
  return function() {
    return ccall(ident, returnType, argTypes, arguments, opts);
  }
}

// We used to include malloc/free by default in the past. Show a helpful error in
// builds with assertions.

var ALLOC_NORMAL = 0; // Tries to use _malloc()
var ALLOC_STACK = 1; // Lives for the duration of the current function call

// allocate(): This is for internal use. You can use it yourself as well, but the interface
//             is a little tricky (see docs right below). The reason is that it is optimized
//             for multiple syntaxes to save space in generated code. So you should
//             normally not use allocate(), and instead allocate memory using _malloc(),
//             initialize it with setValue(), and so forth.
// @slab: An array of data.
// @allocator: How to allocate memory, see ALLOC_*
/** @type {function((Uint8Array|Array<number>), number)} */
function allocate(slab, allocator) {
  var ret;
  assert(typeof allocator === 'number', 'allocate no longer takes a type argument')
  assert(typeof slab !== 'number', 'allocate no longer takes a number as arg0')

  if (allocator == ALLOC_STACK) {
    ret = stackAlloc(slab.length);
  } else {
    ret = _malloc(slab.length);
  }

  if (slab.subarray || slab.slice) {
    HEAPU8.set(/** @type {!Uint8Array} */(slab), ret);
  } else {
    HEAPU8.set(new Uint8Array(slab), ret);
  }
  return ret;
}

// include: runtime_strings.js


// runtime_strings.js: Strings related runtime functions that are part of both MINIMAL_RUNTIME and regular runtime.

// Given a pointer 'ptr' to a null-terminated UTF8-encoded string in the given array that contains uint8 values, returns
// a copy of that string as a Javascript String object.

var UTF8Decoder = typeof TextDecoder !== 'undefined' ? new TextDecoder('utf8') : undefined;

/**
 * @param {number} idx
 * @param {number=} maxBytesToRead
 * @return {string}
 */
function UTF8ArrayToString(heap, idx, maxBytesToRead) {
  var endIdx = idx + maxBytesToRead;
  var endPtr = idx;
  // TextDecoder needs to know the byte length in advance, it doesn't stop on null terminator by itself.
  // Also, use the length info to avoid running tiny strings through TextDecoder, since .subarray() allocates garbage.
  // (As a tiny code save trick, compare endPtr against endIdx using a negation, so that undefined means Infinity)
  while (heap[endPtr] && !(endPtr >= endIdx)) ++endPtr;

  if (endPtr - idx > 16 && heap.subarray && UTF8Decoder) {
    return UTF8Decoder.decode(heap.subarray(idx, endPtr));
  } else {
    var str = '';
    // If building with TextDecoder, we have already computed the string length above, so test loop end condition against that
    while (idx < endPtr) {
      // For UTF8 byte structure, see:
      // http://en.wikipedia.org/wiki/UTF-8#Description
      // https://www.ietf.org/rfc/rfc2279.txt
      // https://tools.ietf.org/html/rfc3629
      var u0 = heap[idx++];
      if (!(u0 & 0x80)) { str += String.fromCharCode(u0); continue; }
      var u1 = heap[idx++] & 63;
      if ((u0 & 0xE0) == 0xC0) { str += String.fromCharCode(((u0 & 31) << 6) | u1); continue; }
      var u2 = heap[idx++] & 63;
      if ((u0 & 0xF0) == 0xE0) {
        u0 = ((u0 & 15) << 12) | (u1 << 6) | u2;
      } else {
        if ((u0 & 0xF8) != 0xF0) warnOnce('Invalid UTF-8 leading byte 0x' + u0.toString(16) + ' encountered when deserializing a UTF-8 string in wasm memory to a JS string!');
        u0 = ((u0 & 7) << 18) | (u1 << 12) | (u2 << 6) | (heap[idx++] & 63);
      }

      if (u0 < 0x10000) {
        str += String.fromCharCode(u0);
      } else {
        var ch = u0 - 0x10000;
        str += String.fromCharCode(0xD800 | (ch >> 10), 0xDC00 | (ch & 0x3FF));
      }
    }
  }
  return str;
}

// Given a pointer 'ptr' to a null-terminated UTF8-encoded string in the emscripten HEAP, returns a
// copy of that string as a Javascript String object.
// maxBytesToRead: an optional length that specifies the maximum number of bytes to read. You can omit
//                 this parameter to scan the string until the first \0 byte. If maxBytesToRead is
//                 passed, and the string at [ptr, ptr+maxBytesToReadr[ contains a null byte in the
//                 middle, then the string will cut short at that byte index (i.e. maxBytesToRead will
//                 not produce a string of exact length [ptr, ptr+maxBytesToRead[)
//                 N.B. mixing frequent uses of UTF8ToString() with and without maxBytesToRead may
//                 throw JS JIT optimizations off, so it is worth to consider consistently using one
//                 style or the other.
/**
 * @param {number} ptr
 * @param {number=} maxBytesToRead
 * @return {string}
 */
function UTF8ToString(ptr, maxBytesToRead) {
  return ptr ? UTF8ArrayToString(HEAPU8, ptr, maxBytesToRead) : '';
}

// Copies the given Javascript String object 'str' to the given byte array at address 'outIdx',
// encoded in UTF8 form and null-terminated. The copy will require at most str.length*4+1 bytes of space in the HEAP.
// Use the function lengthBytesUTF8 to compute the exact number of bytes (excluding null terminator) that this function will write.
// Parameters:
//   str: the Javascript string to copy.
//   heap: the array to copy to. Each index in this array is assumed to be one 8-byte element.
//   outIdx: The starting offset in the array to begin the copying.
//   maxBytesToWrite: The maximum number of bytes this function can write to the array.
//                    This count should include the null terminator,
//                    i.e. if maxBytesToWrite=1, only the null terminator will be written and nothing else.
//                    maxBytesToWrite=0 does not write any bytes to the output, not even the null terminator.
// Returns the number of bytes written, EXCLUDING the null terminator.

function stringToUTF8Array(str, heap, outIdx, maxBytesToWrite) {
  if (!(maxBytesToWrite > 0)) // Parameter maxBytesToWrite is not optional. Negative values, 0, null, undefined and false each don't write out any bytes.
    return 0;

  var startIdx = outIdx;
  var endIdx = outIdx + maxBytesToWrite - 1; // -1 for string null terminator.
  for (var i = 0; i < str.length; ++i) {
    // Gotcha: charCodeAt returns a 16-bit word that is a UTF-16 encoded code unit, not a Unicode code point of the character! So decode UTF16->UTF32->UTF8.
    // See http://unicode.org/faq/utf_bom.html#utf16-3
    // For UTF8 byte structure, see http://en.wikipedia.org/wiki/UTF-8#Description and https://www.ietf.org/rfc/rfc2279.txt and https://tools.ietf.org/html/rfc3629
    var u = str.charCodeAt(i); // possibly a lead surrogate
    if (u >= 0xD800 && u <= 0xDFFF) {
      var u1 = str.charCodeAt(++i);
      u = 0x10000 + ((u & 0x3FF) << 10) | (u1 & 0x3FF);
    }
    if (u <= 0x7F) {
      if (outIdx >= endIdx) break;
      heap[outIdx++] = u;
    } else if (u <= 0x7FF) {
      if (outIdx + 1 >= endIdx) break;
      heap[outIdx++] = 0xC0 | (u >> 6);
      heap[outIdx++] = 0x80 | (u & 63);
    } else if (u <= 0xFFFF) {
      if (outIdx + 2 >= endIdx) break;
      heap[outIdx++] = 0xE0 | (u >> 12);
      heap[outIdx++] = 0x80 | ((u >> 6) & 63);
      heap[outIdx++] = 0x80 | (u & 63);
    } else {
      if (outIdx + 3 >= endIdx) break;
      if (u >= 0x200000) warnOnce('Invalid Unicode code point 0x' + u.toString(16) + ' encountered when serializing a JS string to a UTF-8 string in wasm memory! (Valid unicode code points should be in range 0-0x1FFFFF).');
      heap[outIdx++] = 0xF0 | (u >> 18);
      heap[outIdx++] = 0x80 | ((u >> 12) & 63);
      heap[outIdx++] = 0x80 | ((u >> 6) & 63);
      heap[outIdx++] = 0x80 | (u & 63);
    }
  }
  // Null-terminate the pointer to the buffer.
  heap[outIdx] = 0;
  return outIdx - startIdx;
}

// Copies the given Javascript String object 'str' to the emscripten HEAP at address 'outPtr',
// null-terminated and encoded in UTF8 form. The copy will require at most str.length*4+1 bytes of space in the HEAP.
// Use the function lengthBytesUTF8 to compute the exact number of bytes (excluding null terminator) that this function will write.
// Returns the number of bytes written, EXCLUDING the null terminator.

function stringToUTF8(str, outPtr, maxBytesToWrite) {
  assert(typeof maxBytesToWrite == 'number', 'stringToUTF8(str, outPtr, maxBytesToWrite) is missing the third parameter that specifies the length of the output buffer!');
  return stringToUTF8Array(str, HEAPU8,outPtr, maxBytesToWrite);
}

// Returns the number of bytes the given Javascript string takes if encoded as a UTF8 byte array, EXCLUDING the null terminator byte.
function lengthBytesUTF8(str) {
  var len = 0;
  for (var i = 0; i < str.length; ++i) {
    // Gotcha: charCodeAt returns a 16-bit word that is a UTF-16 encoded code unit, not a Unicode code point of the character! So decode UTF16->UTF32->UTF8.
    // See http://unicode.org/faq/utf_bom.html#utf16-3
    var u = str.charCodeAt(i); // possibly a lead surrogate
    if (u >= 0xD800 && u <= 0xDFFF) u = 0x10000 + ((u & 0x3FF) << 10) | (str.charCodeAt(++i) & 0x3FF);
    if (u <= 0x7F) ++len;
    else if (u <= 0x7FF) len += 2;
    else if (u <= 0xFFFF) len += 3;
    else len += 4;
  }
  return len;
}

// end include: runtime_strings.js
// include: runtime_strings_extra.js


// runtime_strings_extra.js: Strings related runtime functions that are available only in regular runtime.

// Given a pointer 'ptr' to a null-terminated ASCII-encoded string in the emscripten HEAP, returns
// a copy of that string as a Javascript String object.

function AsciiToString(ptr) {
  var str = '';
  while (1) {
    var ch = HEAPU8[((ptr++)>>0)];
    if (!ch) return str;
    str += String.fromCharCode(ch);
  }
}

// Copies the given Javascript String object 'str' to the emscripten HEAP at address 'outPtr',
// null-terminated and encoded in ASCII form. The copy will require at most str.length+1 bytes of space in the HEAP.

function stringToAscii(str, outPtr) {
  return writeAsciiToMemory(str, outPtr, false);
}

// Given a pointer 'ptr' to a null-terminated UTF16LE-encoded string in the emscripten HEAP, returns
// a copy of that string as a Javascript String object.

var UTF16Decoder = typeof TextDecoder !== 'undefined' ? new TextDecoder('utf-16le') : undefined;

function UTF16ToString(ptr, maxBytesToRead) {
  assert(ptr % 2 == 0, 'Pointer passed to UTF16ToString must be aligned to two bytes!');
  var endPtr = ptr;
  // TextDecoder needs to know the byte length in advance, it doesn't stop on null terminator by itself.
  // Also, use the length info to avoid running tiny strings through TextDecoder, since .subarray() allocates garbage.
  var idx = endPtr >> 1;
  var maxIdx = idx + maxBytesToRead / 2;
  // If maxBytesToRead is not passed explicitly, it will be undefined, and this
  // will always evaluate to true. This saves on code size.
  while (!(idx >= maxIdx) && HEAPU16[idx]) ++idx;
  endPtr = idx << 1;

  if (endPtr - ptr > 32 && UTF16Decoder) {
    return UTF16Decoder.decode(HEAPU8.subarray(ptr, endPtr));
  } else {
    var str = '';

    // If maxBytesToRead is not passed explicitly, it will be undefined, and the for-loop's condition
    // will always evaluate to true. The loop is then terminated on the first null char.
    for (var i = 0; !(i >= maxBytesToRead / 2); ++i) {
      var codeUnit = HEAP16[(((ptr)+(i*2))>>1)];
      if (codeUnit == 0) break;
      // fromCharCode constructs a character from a UTF-16 code unit, so we can pass the UTF16 string right through.
      str += String.fromCharCode(codeUnit);
    }

    return str;
  }
}

// Copies the given Javascript String object 'str' to the emscripten HEAP at address 'outPtr',
// null-terminated and encoded in UTF16 form. The copy will require at most str.length*4+2 bytes of space in the HEAP.
// Use the function lengthBytesUTF16() to compute the exact number of bytes (excluding null terminator) that this function will write.
// Parameters:
//   str: the Javascript string to copy.
//   outPtr: Byte address in Emscripten HEAP where to write the string to.
//   maxBytesToWrite: The maximum number of bytes this function can write to the array. This count should include the null
//                    terminator, i.e. if maxBytesToWrite=2, only the null terminator will be written and nothing else.
//                    maxBytesToWrite<2 does not write any bytes to the output, not even the null terminator.
// Returns the number of bytes written, EXCLUDING the null terminator.

function stringToUTF16(str, outPtr, maxBytesToWrite) {
  assert(outPtr % 2 == 0, 'Pointer passed to stringToUTF16 must be aligned to two bytes!');
  assert(typeof maxBytesToWrite == 'number', 'stringToUTF16(str, outPtr, maxBytesToWrite) is missing the third parameter that specifies the length of the output buffer!');
  // Backwards compatibility: if max bytes is not specified, assume unsafe unbounded write is allowed.
  if (maxBytesToWrite === undefined) {
    maxBytesToWrite = 0x7FFFFFFF;
  }
  if (maxBytesToWrite < 2) return 0;
  maxBytesToWrite -= 2; // Null terminator.
  var startPtr = outPtr;
  var numCharsToWrite = (maxBytesToWrite < str.length*2) ? (maxBytesToWrite / 2) : str.length;
  for (var i = 0; i < numCharsToWrite; ++i) {
    // charCodeAt returns a UTF-16 encoded code unit, so it can be directly written to the HEAP.
    var codeUnit = str.charCodeAt(i); // possibly a lead surrogate
    HEAP16[((outPtr)>>1)] = codeUnit;
    outPtr += 2;
  }
  // Null-terminate the pointer to the HEAP.
  HEAP16[((outPtr)>>1)] = 0;
  return outPtr - startPtr;
}

// Returns the number of bytes the given Javascript string takes if encoded as a UTF16 byte array, EXCLUDING the null terminator byte.

function lengthBytesUTF16(str) {
  return str.length*2;
}

function UTF32ToString(ptr, maxBytesToRead) {
  assert(ptr % 4 == 0, 'Pointer passed to UTF32ToString must be aligned to four bytes!');
  var i = 0;

  var str = '';
  // If maxBytesToRead is not passed explicitly, it will be undefined, and this
  // will always evaluate to true. This saves on code size.
  while (!(i >= maxBytesToRead / 4)) {
    var utf32 = HEAP32[(((ptr)+(i*4))>>2)];
    if (utf32 == 0) break;
    ++i;
    // Gotcha: fromCharCode constructs a character from a UTF-16 encoded code (pair), not from a Unicode code point! So encode the code point to UTF-16 for constructing.
    // See http://unicode.org/faq/utf_bom.html#utf16-3
    if (utf32 >= 0x10000) {
      var ch = utf32 - 0x10000;
      str += String.fromCharCode(0xD800 | (ch >> 10), 0xDC00 | (ch & 0x3FF));
    } else {
      str += String.fromCharCode(utf32);
    }
  }
  return str;
}

// Copies the given Javascript String object 'str' to the emscripten HEAP at address 'outPtr',
// null-terminated and encoded in UTF32 form. The copy will require at most str.length*4+4 bytes of space in the HEAP.
// Use the function lengthBytesUTF32() to compute the exact number of bytes (excluding null terminator) that this function will write.
// Parameters:
//   str: the Javascript string to copy.
//   outPtr: Byte address in Emscripten HEAP where to write the string to.
//   maxBytesToWrite: The maximum number of bytes this function can write to the array. This count should include the null
//                    terminator, i.e. if maxBytesToWrite=4, only the null terminator will be written and nothing else.
//                    maxBytesToWrite<4 does not write any bytes to the output, not even the null terminator.
// Returns the number of bytes written, EXCLUDING the null terminator.

function stringToUTF32(str, outPtr, maxBytesToWrite) {
  assert(outPtr % 4 == 0, 'Pointer passed to stringToUTF32 must be aligned to four bytes!');
  assert(typeof maxBytesToWrite == 'number', 'stringToUTF32(str, outPtr, maxBytesToWrite) is missing the third parameter that specifies the length of the output buffer!');
  // Backwards compatibility: if max bytes is not specified, assume unsafe unbounded write is allowed.
  if (maxBytesToWrite === undefined) {
    maxBytesToWrite = 0x7FFFFFFF;
  }
  if (maxBytesToWrite < 4) return 0;
  var startPtr = outPtr;
  var endPtr = startPtr + maxBytesToWrite - 4;
  for (var i = 0; i < str.length; ++i) {
    // Gotcha: charCodeAt returns a 16-bit word that is a UTF-16 encoded code unit, not a Unicode code point of the character! We must decode the string to UTF-32 to the heap.
    // See http://unicode.org/faq/utf_bom.html#utf16-3
    var codeUnit = str.charCodeAt(i); // possibly a lead surrogate
    if (codeUnit >= 0xD800 && codeUnit <= 0xDFFF) {
      var trailSurrogate = str.charCodeAt(++i);
      codeUnit = 0x10000 + ((codeUnit & 0x3FF) << 10) | (trailSurrogate & 0x3FF);
    }
    HEAP32[((outPtr)>>2)] = codeUnit;
    outPtr += 4;
    if (outPtr + 4 > endPtr) break;
  }
  // Null-terminate the pointer to the HEAP.
  HEAP32[((outPtr)>>2)] = 0;
  return outPtr - startPtr;
}

// Returns the number of bytes the given Javascript string takes if encoded as a UTF16 byte array, EXCLUDING the null terminator byte.

function lengthBytesUTF32(str) {
  var len = 0;
  for (var i = 0; i < str.length; ++i) {
    // Gotcha: charCodeAt returns a 16-bit word that is a UTF-16 encoded code unit, not a Unicode code point of the character! We must decode the string to UTF-32 to the heap.
    // See http://unicode.org/faq/utf_bom.html#utf16-3
    var codeUnit = str.charCodeAt(i);
    if (codeUnit >= 0xD800 && codeUnit <= 0xDFFF) ++i; // possibly a lead surrogate, so skip over the tail surrogate.
    len += 4;
  }

  return len;
}

// Allocate heap space for a JS string, and write it there.
// It is the responsibility of the caller to free() that memory.
function allocateUTF8(str) {
  var size = lengthBytesUTF8(str) + 1;
  var ret = _malloc(size);
  if (ret) stringToUTF8Array(str, HEAP8, ret, size);
  return ret;
}

// Allocate stack space for a JS string, and write it there.
function allocateUTF8OnStack(str) {
  var size = lengthBytesUTF8(str) + 1;
  var ret = stackAlloc(size);
  stringToUTF8Array(str, HEAP8, ret, size);
  return ret;
}

// Deprecated: This function should not be called because it is unsafe and does not provide
// a maximum length limit of how many bytes it is allowed to write. Prefer calling the
// function stringToUTF8Array() instead, which takes in a maximum length that can be used
// to be secure from out of bounds writes.
/** @deprecated
    @param {boolean=} dontAddNull */
function writeStringToMemory(string, buffer, dontAddNull) {
  warnOnce('writeStringToMemory is deprecated and should not be called! Use stringToUTF8() instead!');

  var /** @type {number} */ lastChar, /** @type {number} */ end;
  if (dontAddNull) {
    // stringToUTF8Array always appends null. If we don't want to do that, remember the
    // character that existed at the location where the null will be placed, and restore
    // that after the write (below).
    end = buffer + lengthBytesUTF8(string);
    lastChar = HEAP8[end];
  }
  stringToUTF8(string, buffer, Infinity);
  if (dontAddNull) HEAP8[end] = lastChar; // Restore the value under the null character.
}

function writeArrayToMemory(array, buffer) {
  assert(array.length >= 0, 'writeArrayToMemory array must have a length (should be an array or typed array)')
  HEAP8.set(array, buffer);
}

/** @param {boolean=} dontAddNull */
function writeAsciiToMemory(str, buffer, dontAddNull) {
  for (var i = 0; i < str.length; ++i) {
    assert(str.charCodeAt(i) === str.charCodeAt(i)&0xff);
    HEAP8[((buffer++)>>0)] = str.charCodeAt(i);
  }
  // Null-terminate the pointer to the HEAP.
  if (!dontAddNull) HEAP8[((buffer)>>0)] = 0;
}

// end include: runtime_strings_extra.js
// Memory management

function alignUp(x, multiple) {
  if (x % multiple > 0) {
    x += multiple - (x % multiple);
  }
  return x;
}

var HEAP,
/** @type {ArrayBuffer} */
  buffer,
/** @type {Int8Array} */
  HEAP8,
/** @type {Uint8Array} */
  HEAPU8,
/** @type {Int16Array} */
  HEAP16,
/** @type {Uint16Array} */
  HEAPU16,
/** @type {Int32Array} */
  HEAP32,
/** @type {Uint32Array} */
  HEAPU32,
/** @type {Float32Array} */
  HEAPF32,
/** @type {Float64Array} */
  HEAPF64;

function updateGlobalBufferAndViews(buf) {
  buffer = buf;
  Module['HEAP8'] = HEAP8 = new Int8Array(buf);
  Module['HEAP16'] = HEAP16 = new Int16Array(buf);
  Module['HEAP32'] = HEAP32 = new Int32Array(buf);
  Module['HEAPU8'] = HEAPU8 = new Uint8Array(buf);
  Module['HEAPU16'] = HEAPU16 = new Uint16Array(buf);
  Module['HEAPU32'] = HEAPU32 = new Uint32Array(buf);
  Module['HEAPF32'] = HEAPF32 = new Float32Array(buf);
  Module['HEAPF64'] = HEAPF64 = new Float64Array(buf);
}

var TOTAL_STACK = 5242880;
if (Module['TOTAL_STACK']) assert(TOTAL_STACK === Module['TOTAL_STACK'], 'the stack size can no longer be determined at runtime')

var INITIAL_MEMORY = Module['INITIAL_MEMORY'] || 268435456;
if (!Object.getOwnPropertyDescriptor(Module, 'INITIAL_MEMORY')) {
  Object.defineProperty(Module, 'INITIAL_MEMORY', {
    configurable: true,
    get: function() {
      abort('Module.INITIAL_MEMORY has been replaced with plain INITIAL_MEMORY (the initial value can be provided on Module, but after startup the value is only looked for on a local variable of that name)')
    }
  });
}

assert(INITIAL_MEMORY >= TOTAL_STACK, 'INITIAL_MEMORY should be larger than TOTAL_STACK, was ' + INITIAL_MEMORY + '! (TOTAL_STACK=' + TOTAL_STACK + ')');

// check for full engine support (use string 'subarray' to avoid closure compiler confusion)
assert(typeof Int32Array !== 'undefined' && typeof Float64Array !== 'undefined' && Int32Array.prototype.subarray !== undefined && Int32Array.prototype.set !== undefined,
       'JS engine does not provide full typed array support');

// If memory is defined in wasm, the user can't provide it.
assert(!Module['wasmMemory'], 'Use of `wasmMemory` detected.  Use -s IMPORTED_MEMORY to define wasmMemory externally');
assert(INITIAL_MEMORY == 268435456, 'Detected runtime INITIAL_MEMORY setting.  Use -s IMPORTED_MEMORY to define wasmMemory dynamically');

// include: runtime_init_table.js
// In regular non-RELOCATABLE mode the table is exported
// from the wasm module and this will be assigned once
// the exports are available.
var wasmTable;

// end include: runtime_init_table.js
// include: runtime_stack_check.js


// Initializes the stack cookie. Called at the startup of main and at the startup of each thread in pthreads mode.
function writeStackCookie() {
  var max = _emscripten_stack_get_end();
  assert((max & 3) == 0);
  // The stack grows downwards
  HEAPU32[(max >> 2)+1] = 0x2135467;
  HEAPU32[(max >> 2)+2] = 0x89BACDFE;
  // Also test the global address 0 for integrity.
  HEAP32[0] = 0x63736d65; /* 'emsc' */
}

function checkStackCookie() {
  if (ABORT) return;
  var max = _emscripten_stack_get_end();
  var cookie1 = HEAPU32[(max >> 2)+1];
  var cookie2 = HEAPU32[(max >> 2)+2];
  if (cookie1 != 0x2135467 || cookie2 != 0x89BACDFE) {
    abort('Stack overflow! Stack cookie has been overwritten, expected hex dwords 0x89BACDFE and 0x2135467, but received 0x' + cookie2.toString(16) + ' ' + cookie1.toString(16));
  }
  // Also test the global address 0 for integrity.
  if (HEAP32[0] !== 0x63736d65 /* 'emsc' */) abort('Runtime error: The application has corrupted its heap memory area (address zero)!');
}

// end include: runtime_stack_check.js
// include: runtime_assertions.js


// Endianness check
(function() {
  var h16 = new Int16Array(1);
  var h8 = new Int8Array(h16.buffer);
  h16[0] = 0x6373;
  if (h8[0] !== 0x73 || h8[1] !== 0x63) throw 'Runtime error: expected the system to be little-endian! (Run with -s SUPPORT_BIG_ENDIAN=1 to bypass)';
})();

// end include: runtime_assertions.js
var __ATPRERUN__  = []; // functions called before the runtime is initialized
var __ATINIT__    = []; // functions called during startup
var __ATMAIN__    = []; // functions called when main() is to be run
var __ATEXIT__    = []; // functions called during shutdown
var __ATPOSTRUN__ = []; // functions called after the main() is called

var runtimeInitialized = false;
var runtimeExited = false;

function preRun() {

  if (Module['preRun']) {
    if (typeof Module['preRun'] == 'function') Module['preRun'] = [Module['preRun']];
    while (Module['preRun'].length) {
      addOnPreRun(Module['preRun'].shift());
    }
  }

  callRuntimeCallbacks(__ATPRERUN__);
}

function initRuntime() {
  checkStackCookie();
  assert(!runtimeInitialized);
  runtimeInitialized = true;

  if (!Module["noFSInit"] && !FS.init.initialized) FS.init();
TTY.init();
  callRuntimeCallbacks(__ATINIT__);
}

function preMain() {
  checkStackCookie();
  FS.ignorePermissions = false;
  callRuntimeCallbacks(__ATMAIN__);
}

function exitRuntime() {
  checkStackCookie();
  runtimeExited = true;
}

function postRun() {
  checkStackCookie();

  if (Module['postRun']) {
    if (typeof Module['postRun'] == 'function') Module['postRun'] = [Module['postRun']];
    while (Module['postRun'].length) {
      addOnPostRun(Module['postRun'].shift());
    }
  }

  callRuntimeCallbacks(__ATPOSTRUN__);
}

function addOnPreRun(cb) {
  __ATPRERUN__.unshift(cb);
}

function addOnInit(cb) {
  __ATINIT__.unshift(cb);
}

function addOnPreMain(cb) {
  __ATMAIN__.unshift(cb);
}

function addOnExit(cb) {
}

function addOnPostRun(cb) {
  __ATPOSTRUN__.unshift(cb);
}

// include: runtime_math.js


// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Math/imul

// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Math/fround

// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Math/clz32

// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Math/trunc

assert(Math.imul, 'This browser does not support Math.imul(), build with LEGACY_VM_SUPPORT or POLYFILL_OLD_MATH_FUNCTIONS to add in a polyfill');
assert(Math.fround, 'This browser does not support Math.fround(), build with LEGACY_VM_SUPPORT or POLYFILL_OLD_MATH_FUNCTIONS to add in a polyfill');
assert(Math.clz32, 'This browser does not support Math.clz32(), build with LEGACY_VM_SUPPORT or POLYFILL_OLD_MATH_FUNCTIONS to add in a polyfill');
assert(Math.trunc, 'This browser does not support Math.trunc(), build with LEGACY_VM_SUPPORT or POLYFILL_OLD_MATH_FUNCTIONS to add in a polyfill');

// end include: runtime_math.js
// A counter of dependencies for calling run(). If we need to
// do asynchronous work before running, increment this and
// decrement it. Incrementing must happen in a place like
// Module.preRun (used by emcc to add file preloading).
// Note that you can add dependencies in preRun, even though
// it happens right before run - run will be postponed until
// the dependencies are met.
var runDependencies = 0;
var runDependencyWatcher = null;
var dependenciesFulfilled = null; // overridden to take different actions when all run dependencies are fulfilled
var runDependencyTracking = {};

function getUniqueRunDependency(id) {
  var orig = id;
  while (1) {
    if (!runDependencyTracking[id]) return id;
    id = orig + Math.random();
  }
}

function addRunDependency(id) {
  runDependencies++;

  if (Module['monitorRunDependencies']) {
    Module['monitorRunDependencies'](runDependencies);
  }

  if (id) {
    assert(!runDependencyTracking[id]);
    runDependencyTracking[id] = 1;
    if (runDependencyWatcher === null && typeof setInterval !== 'undefined') {
      // Check for missing dependencies every few seconds
      runDependencyWatcher = setInterval(function() {
        if (ABORT) {
          clearInterval(runDependencyWatcher);
          runDependencyWatcher = null;
          return;
        }
        var shown = false;
        for (var dep in runDependencyTracking) {
          if (!shown) {
            shown = true;
            err('still waiting on run dependencies:');
          }
          err('dependency: ' + dep);
        }
        if (shown) {
          err('(end of list)');
        }
      }, 10000);
    }
  } else {
    err('warning: run dependency added without ID');
  }
}

function removeRunDependency(id) {
  runDependencies--;

  if (Module['monitorRunDependencies']) {
    Module['monitorRunDependencies'](runDependencies);
  }

  if (id) {
    assert(runDependencyTracking[id]);
    delete runDependencyTracking[id];
  } else {
    err('warning: run dependency removed without ID');
  }
  if (runDependencies == 0) {
    if (runDependencyWatcher !== null) {
      clearInterval(runDependencyWatcher);
      runDependencyWatcher = null;
    }
    if (dependenciesFulfilled) {
      var callback = dependenciesFulfilled;
      dependenciesFulfilled = null;
      callback(); // can add another dependenciesFulfilled
    }
  }
}

Module["preloadedImages"] = {}; // maps url to image data
Module["preloadedAudios"] = {}; // maps url to audio data

/** @param {string|number=} what */
function abort(what) {
  if (Module['onAbort']) {
    Module['onAbort'](what);
  }

  what += '';
  err(what);

  ABORT = true;
  EXITSTATUS = 1;

  var output = 'abort(' + what + ') at ' + stackTrace();
  what = output;

  // Use a wasm runtime error, because a JS error might be seen as a foreign
  // exception, which means we'd run destructors on it. We need the error to
  // simply make the program stop.
  var e = new WebAssembly.RuntimeError(what);

  // Throw the error whether or not MODULARIZE is set because abort is used
  // in code paths apart from instantiation where an exception is expected
  // to be thrown when abort is called.
  throw e;
}

// {{MEM_INITIALIZER}}

// include: memoryprofiler.js


// end include: memoryprofiler.js
// include: URIUtils.js


// Prefix of data URIs emitted by SINGLE_FILE and related options.
var dataURIPrefix = 'data:application/octet-stream;base64,';

// Indicates whether filename is a base64 data URI.
function isDataURI(filename) {
  // Prefix of data URIs emitted by SINGLE_FILE and related options.
  return filename.startsWith(dataURIPrefix);
}

// Indicates whether filename is delivered via file protocol (as opposed to http/https)
function isFileURI(filename) {
  return filename.startsWith('file://');
}

// end include: URIUtils.js
function createExportWrapper(name, fixedasm) {
  return function() {
    var displayName = name;
    var asm = fixedasm;
    if (!fixedasm) {
      asm = Module['asm'];
    }
    assert(runtimeInitialized, 'native function `' + displayName + '` called before runtime initialization');
    assert(!runtimeExited, 'native function `' + displayName + '` called after runtime exit (use NO_EXIT_RUNTIME to keep it alive after main() exits)');
    if (!asm[name]) {
      assert(asm[name], 'exported native function `' + displayName + '` not found');
    }
    return asm[name].apply(null, arguments);
  };
}

var wasmBinaryFile = 'example-34-mvsDebug.wasm';
if (!isDataURI(wasmBinaryFile)) {
  wasmBinaryFile = locateFile(wasmBinaryFile);
}

function getBinary(file) {
  try {
    if (file == wasmBinaryFile && wasmBinary) {
      return new Uint8Array(wasmBinary);
    }
    if (readBinary) {
      return readBinary(file);
    } else {
      throw "both async and sync fetching of the wasm failed";
    }
  }
  catch (err) {
    abort(err);
  }
}

function getBinaryPromise() {
  // If we don't have the binary yet, try to to load it asynchronously.
  // Fetch has some additional restrictions over XHR, like it can't be used on a file:// url.
  // See https://github.com/github/fetch/pull/92#issuecomment-140665932
  // Cordova or Electron apps are typically loaded from a file:// url.
  // So use fetch if it is available and the url is not a file, otherwise fall back to XHR.
  if (!wasmBinary && (ENVIRONMENT_IS_WEB || ENVIRONMENT_IS_WORKER)) {
    if (typeof fetch === 'function'
      && !isFileURI(wasmBinaryFile)
    ) {
      return fetch(wasmBinaryFile, { credentials: 'same-origin' }).then(function(response) {
        if (!response['ok']) {
          throw "failed to load wasm binary file at '" + wasmBinaryFile + "'";
        }
        return response['arrayBuffer']();
      }).catch(function () {
          return getBinary(wasmBinaryFile);
      });
    }
    else {
      if (readAsync) {
        // fetch is not available or url is file => try XHR (readAsync uses XHR internally)
        return new Promise(function(resolve, reject) {
          readAsync(wasmBinaryFile, function(response) { resolve(new Uint8Array(/** @type{!ArrayBuffer} */(response))) }, reject)
        });
      }
    }
  }
    
  // Otherwise, getBinary should be able to get it synchronously
  return Promise.resolve().then(function() { return getBinary(wasmBinaryFile); });
}

// Create the wasm instance.
// Receives the wasm imports, returns the exports.
function createWasm() {
  // prepare imports
  var info = {
    'env': asmLibraryArg,
    'wasi_snapshot_preview1': asmLibraryArg,
  };
  // Load the wasm module and create an instance of using native support in the JS engine.
  // handle a generated wasm instance, receiving its exports and
  // performing other necessary setup
  /** @param {WebAssembly.Module=} module*/
  function receiveInstance(instance, module) {
    var exports = instance.exports;

    Module['asm'] = exports;

    wasmMemory = Module['asm']['memory'];
    assert(wasmMemory, "memory not found in wasm exports");
    // This assertion doesn't hold when emscripten is run in --post-link
    // mode.
    // TODO(sbc): Read INITIAL_MEMORY out of the wasm file in post-link mode.
    //assert(wasmMemory.buffer.byteLength === 268435456);
    updateGlobalBufferAndViews(wasmMemory.buffer);

    wasmTable = Module['asm']['__indirect_function_table'];
    assert(wasmTable, "table not found in wasm exports");

    addOnInit(Module['asm']['__wasm_call_ctors']);

    removeRunDependency('wasm-instantiate');
  }
  // we can't run yet (except in a pthread, where we have a custom sync instantiator)
  addRunDependency('wasm-instantiate');

  // Prefer streaming instantiation if available.
  // Async compilation can be confusing when an error on the page overwrites Module
  // (for example, if the order of elements is wrong, and the one defining Module is
  // later), so we save Module and check it later.
  var trueModule = Module;
  function receiveInstantiationResult(result) {
    // 'result' is a ResultObject object which has both the module and instance.
    // receiveInstance() will swap in the exports (to Module.asm) so they can be called
    assert(Module === trueModule, 'the Module object should not be replaced during async compilation - perhaps the order of HTML elements is wrong?');
    trueModule = null;
    // TODO: Due to Closure regression https://github.com/google/closure-compiler/issues/3193, the above line no longer optimizes out down to the following line.
    // When the regression is fixed, can restore the above USE_PTHREADS-enabled path.
    receiveInstance(result['instance']);
  }

  function instantiateArrayBuffer(receiver) {
    return getBinaryPromise().then(function(binary) {
      var result = WebAssembly.instantiate(binary, info);
      return result;
    }).then(receiver, function(reason) {
      err('failed to asynchronously prepare wasm: ' + reason);

      // Warn on some common problems.
      if (isFileURI(wasmBinaryFile)) {
        err('warning: Loading from a file URI (' + wasmBinaryFile + ') is not supported in most browsers. See https://emscripten.org/docs/getting_started/FAQ.html#how-do-i-run-a-local-webserver-for-testing-why-does-my-program-stall-in-downloading-or-preparing');
      }
      abort(reason);
    });
  }

  function instantiateAsync() {
    if (!wasmBinary &&
        typeof WebAssembly.instantiateStreaming === 'function' &&
        !isDataURI(wasmBinaryFile) &&
        // Don't use streaming for file:// delivered objects in a webview, fetch them synchronously.
        !isFileURI(wasmBinaryFile) &&
        typeof fetch === 'function') {
      return fetch(wasmBinaryFile, { credentials: 'same-origin' }).then(function (response) {
        var result = WebAssembly.instantiateStreaming(response, info);
        return result.then(receiveInstantiationResult, function(reason) {
            // We expect the most common failure cause to be a bad MIME type for the binary,
            // in which case falling back to ArrayBuffer instantiation should work.
            err('wasm streaming compile failed: ' + reason);
            err('falling back to ArrayBuffer instantiation');
            return instantiateArrayBuffer(receiveInstantiationResult);
          });
      });
    } else {
      return instantiateArrayBuffer(receiveInstantiationResult);
    }
  }

  // User shell pages can write their own Module.instantiateWasm = function(imports, successCallback) callback
  // to manually instantiate the Wasm module themselves. This allows pages to run the instantiation parallel
  // to any other async startup actions they are performing.
  if (Module['instantiateWasm']) {
    try {
      var exports = Module['instantiateWasm'](info, receiveInstance);
      return exports;
    } catch(e) {
      err('Module.instantiateWasm callback failed with error: ' + e);
      return false;
    }
  }

  instantiateAsync();
  return {}; // no exports yet; we'll fill them in later
}

// Globals used by JS i64 conversions (see makeSetValue)
var tempDouble;
var tempI64;

// === Body ===

var ASM_CONSTS = {
  584308: function() {debugger;}
};






  function callRuntimeCallbacks(callbacks) {
      while (callbacks.length > 0) {
        var callback = callbacks.shift();
        if (typeof callback == 'function') {
          callback(Module); // Pass the module as the first argument.
          continue;
        }
        var func = callback.func;
        if (typeof func === 'number') {
          if (callback.arg === undefined) {
            wasmTable.get(func)();
          } else {
            wasmTable.get(func)(callback.arg);
          }
        } else {
          func(callback.arg === undefined ? null : callback.arg);
        }
      }
    }

  function demangle(func) {
      warnOnce('warning: build with  -s DEMANGLE_SUPPORT=1  to link in libcxxabi demangling');
      return func;
    }

  function demangleAll(text) {
      var regex =
        /\b_Z[\w\d_]+/g;
      return text.replace(regex,
        function(x) {
          var y = demangle(x);
          return x === y ? x : (y + ' [' + x + ']');
        });
    }

  function jsStackTrace() {
      var error = new Error();
      if (!error.stack) {
        // IE10+ special cases: It does have callstack info, but it is only populated if an Error object is thrown,
        // so try that as a special-case.
        try {
          throw new Error();
        } catch(e) {
          error = e;
        }
        if (!error.stack) {
          return '(no stack trace available)';
        }
      }
      return error.stack.toString();
    }

  var runtimeKeepaliveCounter=0;
  function keepRuntimeAlive() {
      return noExitRuntime || runtimeKeepaliveCounter > 0;
    }

  function stackTrace() {
      var js = jsStackTrace();
      if (Module['extraStackTrace']) js += '\n' + Module['extraStackTrace']();
      return demangleAll(js);
    }

  function ___assert_fail(condition, filename, line, func) {
      abort('Assertion failed: ' + UTF8ToString(condition) + ', at: ' + [filename ? UTF8ToString(filename) : 'unknown filename', line, func ? UTF8ToString(func) : 'unknown function']);
    }

  function _atexit(func, arg) {
    }
  function ___cxa_atexit(a0,a1
  ) {
  return _atexit(a0,a1);
  }

  function setErrNo(value) {
      HEAP32[((___errno_location())>>2)] = value;
      return value;
    }
  
  var PATH={splitPath:function(filename) {
        var splitPathRe = /^(\/?|)([\s\S]*?)((?:\.{1,2}|[^\/]+?|)(\.[^.\/]*|))(?:[\/]*)$/;
        return splitPathRe.exec(filename).slice(1);
      },normalizeArray:function(parts, allowAboveRoot) {
        // if the path tries to go above the root, `up` ends up > 0
        var up = 0;
        for (var i = parts.length - 1; i >= 0; i--) {
          var last = parts[i];
          if (last === '.') {
            parts.splice(i, 1);
          } else if (last === '..') {
            parts.splice(i, 1);
            up++;
          } else if (up) {
            parts.splice(i, 1);
            up--;
          }
        }
        // if the path is allowed to go above the root, restore leading ..s
        if (allowAboveRoot) {
          for (; up; up--) {
            parts.unshift('..');
          }
        }
        return parts;
      },normalize:function(path) {
        var isAbsolute = path.charAt(0) === '/',
            trailingSlash = path.substr(-1) === '/';
        // Normalize the path
        path = PATH.normalizeArray(path.split('/').filter(function(p) {
          return !!p;
        }), !isAbsolute).join('/');
        if (!path && !isAbsolute) {
          path = '.';
        }
        if (path && trailingSlash) {
          path += '/';
        }
        return (isAbsolute ? '/' : '') + path;
      },dirname:function(path) {
        var result = PATH.splitPath(path),
            root = result[0],
            dir = result[1];
        if (!root && !dir) {
          // No dirname whatsoever
          return '.';
        }
        if (dir) {
          // It has a dirname, strip trailing slash
          dir = dir.substr(0, dir.length - 1);
        }
        return root + dir;
      },basename:function(path) {
        // EMSCRIPTEN return '/'' for '/', not an empty string
        if (path === '/') return '/';
        path = PATH.normalize(path);
        path = path.replace(/\/$/, "");
        var lastSlash = path.lastIndexOf('/');
        if (lastSlash === -1) return path;
        return path.substr(lastSlash+1);
      },extname:function(path) {
        return PATH.splitPath(path)[3];
      },join:function() {
        var paths = Array.prototype.slice.call(arguments, 0);
        return PATH.normalize(paths.join('/'));
      },join2:function(l, r) {
        return PATH.normalize(l + '/' + r);
      }};
  
  function getRandomDevice() {
      if (typeof crypto === 'object' && typeof crypto['getRandomValues'] === 'function') {
        // for modern web browsers
        var randomBuffer = new Uint8Array(1);
        return function() { crypto.getRandomValues(randomBuffer); return randomBuffer[0]; };
      } else
      if (ENVIRONMENT_IS_NODE) {
        // for nodejs with or without crypto support included
        try {
          var crypto_module = require('crypto');
          // nodejs has crypto support
          return function() { return crypto_module['randomBytes'](1)[0]; };
        } catch (e) {
          // nodejs doesn't have crypto support
        }
      }
      // we couldn't find a proper implementation, as Math.random() is not suitable for /dev/random, see emscripten-core/emscripten/pull/7096
      return function() { abort("no cryptographic support found for randomDevice. consider polyfilling it if you want to use something insecure like Math.random(), e.g. put this in a --pre-js: var crypto = { getRandomValues: function(array) { for (var i = 0; i < array.length; i++) array[i] = (Math.random()*256)|0 } };"); };
    }
  
  var PATH_FS={resolve:function() {
        var resolvedPath = '',
          resolvedAbsolute = false;
        for (var i = arguments.length - 1; i >= -1 && !resolvedAbsolute; i--) {
          var path = (i >= 0) ? arguments[i] : FS.cwd();
          // Skip empty and invalid entries
          if (typeof path !== 'string') {
            throw new TypeError('Arguments to path.resolve must be strings');
          } else if (!path) {
            return ''; // an invalid portion invalidates the whole thing
          }
          resolvedPath = path + '/' + resolvedPath;
          resolvedAbsolute = path.charAt(0) === '/';
        }
        // At this point the path should be resolved to a full absolute path, but
        // handle relative paths to be safe (might happen when process.cwd() fails)
        resolvedPath = PATH.normalizeArray(resolvedPath.split('/').filter(function(p) {
          return !!p;
        }), !resolvedAbsolute).join('/');
        return ((resolvedAbsolute ? '/' : '') + resolvedPath) || '.';
      },relative:function(from, to) {
        from = PATH_FS.resolve(from).substr(1);
        to = PATH_FS.resolve(to).substr(1);
        function trim(arr) {
          var start = 0;
          for (; start < arr.length; start++) {
            if (arr[start] !== '') break;
          }
          var end = arr.length - 1;
          for (; end >= 0; end--) {
            if (arr[end] !== '') break;
          }
          if (start > end) return [];
          return arr.slice(start, end - start + 1);
        }
        var fromParts = trim(from.split('/'));
        var toParts = trim(to.split('/'));
        var length = Math.min(fromParts.length, toParts.length);
        var samePartsLength = length;
        for (var i = 0; i < length; i++) {
          if (fromParts[i] !== toParts[i]) {
            samePartsLength = i;
            break;
          }
        }
        var outputParts = [];
        for (var i = samePartsLength; i < fromParts.length; i++) {
          outputParts.push('..');
        }
        outputParts = outputParts.concat(toParts.slice(samePartsLength));
        return outputParts.join('/');
      }};
  
  var TTY={ttys:[],init:function () {
        // https://github.com/emscripten-core/emscripten/pull/1555
        // if (ENVIRONMENT_IS_NODE) {
        //   // currently, FS.init does not distinguish if process.stdin is a file or TTY
        //   // device, it always assumes it's a TTY device. because of this, we're forcing
        //   // process.stdin to UTF8 encoding to at least make stdin reading compatible
        //   // with text files until FS.init can be refactored.
        //   process['stdin']['setEncoding']('utf8');
        // }
      },shutdown:function() {
        // https://github.com/emscripten-core/emscripten/pull/1555
        // if (ENVIRONMENT_IS_NODE) {
        //   // inolen: any idea as to why node -e 'process.stdin.read()' wouldn't exit immediately (with process.stdin being a tty)?
        //   // isaacs: because now it's reading from the stream, you've expressed interest in it, so that read() kicks off a _read() which creates a ReadReq operation
        //   // inolen: I thought read() in that case was a synchronous operation that just grabbed some amount of buffered data if it exists?
        //   // isaacs: it is. but it also triggers a _read() call, which calls readStart() on the handle
        //   // isaacs: do process.stdin.pause() and i'd think it'd probably close the pending call
        //   process['stdin']['pause']();
        // }
      },register:function(dev, ops) {
        TTY.ttys[dev] = { input: [], output: [], ops: ops };
        FS.registerDevice(dev, TTY.stream_ops);
      },stream_ops:{open:function(stream) {
          var tty = TTY.ttys[stream.node.rdev];
          if (!tty) {
            throw new FS.ErrnoError(43);
          }
          stream.tty = tty;
          stream.seekable = false;
        },close:function(stream) {
          // flush any pending line data
          stream.tty.ops.flush(stream.tty);
        },flush:function(stream) {
          stream.tty.ops.flush(stream.tty);
        },read:function(stream, buffer, offset, length, pos /* ignored */) {
          if (!stream.tty || !stream.tty.ops.get_char) {
            throw new FS.ErrnoError(60);
          }
          var bytesRead = 0;
          for (var i = 0; i < length; i++) {
            var result;
            try {
              result = stream.tty.ops.get_char(stream.tty);
            } catch (e) {
              throw new FS.ErrnoError(29);
            }
            if (result === undefined && bytesRead === 0) {
              throw new FS.ErrnoError(6);
            }
            if (result === null || result === undefined) break;
            bytesRead++;
            buffer[offset+i] = result;
          }
          if (bytesRead) {
            stream.node.timestamp = Date.now();
          }
          return bytesRead;
        },write:function(stream, buffer, offset, length, pos) {
          if (!stream.tty || !stream.tty.ops.put_char) {
            throw new FS.ErrnoError(60);
          }
          try {
            for (var i = 0; i < length; i++) {
              stream.tty.ops.put_char(stream.tty, buffer[offset+i]);
            }
          } catch (e) {
            throw new FS.ErrnoError(29);
          }
          if (length) {
            stream.node.timestamp = Date.now();
          }
          return i;
        }},default_tty_ops:{get_char:function(tty) {
          if (!tty.input.length) {
            var result = null;
            if (ENVIRONMENT_IS_NODE) {
              // we will read data by chunks of BUFSIZE
              var BUFSIZE = 256;
              var buf = Buffer.alloc ? Buffer.alloc(BUFSIZE) : new Buffer(BUFSIZE);
              var bytesRead = 0;
  
              try {
                bytesRead = nodeFS.readSync(process.stdin.fd, buf, 0, BUFSIZE, null);
              } catch(e) {
                // Cross-platform differences: on Windows, reading EOF throws an exception, but on other OSes,
                // reading EOF returns 0. Uniformize behavior by treating the EOF exception to return 0.
                if (e.toString().includes('EOF')) bytesRead = 0;
                else throw e;
              }
  
              if (bytesRead > 0) {
                result = buf.slice(0, bytesRead).toString('utf-8');
              } else {
                result = null;
              }
            } else
            if (typeof window != 'undefined' &&
              typeof window.prompt == 'function') {
              // Browser.
              result = window.prompt('Input: ');  // returns null on cancel
              if (result !== null) {
                result += '\n';
              }
            } else if (typeof readline == 'function') {
              // Command line.
              result = readline();
              if (result !== null) {
                result += '\n';
              }
            }
            if (!result) {
              return null;
            }
            tty.input = intArrayFromString(result, true);
          }
          return tty.input.shift();
        },put_char:function(tty, val) {
          if (val === null || val === 10) {
            out(UTF8ArrayToString(tty.output, 0));
            tty.output = [];
          } else {
            if (val != 0) tty.output.push(val); // val == 0 would cut text output off in the middle.
          }
        },flush:function(tty) {
          if (tty.output && tty.output.length > 0) {
            out(UTF8ArrayToString(tty.output, 0));
            tty.output = [];
          }
        }},default_tty1_ops:{put_char:function(tty, val) {
          if (val === null || val === 10) {
            err(UTF8ArrayToString(tty.output, 0));
            tty.output = [];
          } else {
            if (val != 0) tty.output.push(val);
          }
        },flush:function(tty) {
          if (tty.output && tty.output.length > 0) {
            err(UTF8ArrayToString(tty.output, 0));
            tty.output = [];
          }
        }}};
  
  function mmapAlloc(size) {
      var alignedSize = alignMemory(size, 16384);
      var ptr = _malloc(alignedSize);
      while (size < alignedSize) HEAP8[ptr + size++] = 0;
      return ptr;
    }
  var MEMFS={ops_table:null,mount:function(mount) {
        return MEMFS.createNode(null, '/', 16384 | 511 /* 0777 */, 0);
      },createNode:function(parent, name, mode, dev) {
        if (FS.isBlkdev(mode) || FS.isFIFO(mode)) {
          // no supported
          throw new FS.ErrnoError(63);
        }
        if (!MEMFS.ops_table) {
          MEMFS.ops_table = {
            dir: {
              node: {
                getattr: MEMFS.node_ops.getattr,
                setattr: MEMFS.node_ops.setattr,
                lookup: MEMFS.node_ops.lookup,
                mknod: MEMFS.node_ops.mknod,
                rename: MEMFS.node_ops.rename,
                unlink: MEMFS.node_ops.unlink,
                rmdir: MEMFS.node_ops.rmdir,
                readdir: MEMFS.node_ops.readdir,
                symlink: MEMFS.node_ops.symlink
              },
              stream: {
                llseek: MEMFS.stream_ops.llseek
              }
            },
            file: {
              node: {
                getattr: MEMFS.node_ops.getattr,
                setattr: MEMFS.node_ops.setattr
              },
              stream: {
                llseek: MEMFS.stream_ops.llseek,
                read: MEMFS.stream_ops.read,
                write: MEMFS.stream_ops.write,
                allocate: MEMFS.stream_ops.allocate,
                mmap: MEMFS.stream_ops.mmap,
                msync: MEMFS.stream_ops.msync
              }
            },
            link: {
              node: {
                getattr: MEMFS.node_ops.getattr,
                setattr: MEMFS.node_ops.setattr,
                readlink: MEMFS.node_ops.readlink
              },
              stream: {}
            },
            chrdev: {
              node: {
                getattr: MEMFS.node_ops.getattr,
                setattr: MEMFS.node_ops.setattr
              },
              stream: FS.chrdev_stream_ops
            }
          };
        }
        var node = FS.createNode(parent, name, mode, dev);
        if (FS.isDir(node.mode)) {
          node.node_ops = MEMFS.ops_table.dir.node;
          node.stream_ops = MEMFS.ops_table.dir.stream;
          node.contents = {};
        } else if (FS.isFile(node.mode)) {
          node.node_ops = MEMFS.ops_table.file.node;
          node.stream_ops = MEMFS.ops_table.file.stream;
          node.usedBytes = 0; // The actual number of bytes used in the typed array, as opposed to contents.length which gives the whole capacity.
          // When the byte data of the file is populated, this will point to either a typed array, or a normal JS array. Typed arrays are preferred
          // for performance, and used by default. However, typed arrays are not resizable like normal JS arrays are, so there is a small disk size
          // penalty involved for appending file writes that continuously grow a file similar to std::vector capacity vs used -scheme.
          node.contents = null; 
        } else if (FS.isLink(node.mode)) {
          node.node_ops = MEMFS.ops_table.link.node;
          node.stream_ops = MEMFS.ops_table.link.stream;
        } else if (FS.isChrdev(node.mode)) {
          node.node_ops = MEMFS.ops_table.chrdev.node;
          node.stream_ops = MEMFS.ops_table.chrdev.stream;
        }
        node.timestamp = Date.now();
        // add the new node to the parent
        if (parent) {
          parent.contents[name] = node;
          parent.timestamp = node.timestamp;
        }
        return node;
      },getFileDataAsTypedArray:function(node) {
        if (!node.contents) return new Uint8Array(0);
        if (node.contents.subarray) return node.contents.subarray(0, node.usedBytes); // Make sure to not return excess unused bytes.
        return new Uint8Array(node.contents);
      },expandFileStorage:function(node, newCapacity) {
        var prevCapacity = node.contents ? node.contents.length : 0;
        if (prevCapacity >= newCapacity) return; // No need to expand, the storage was already large enough.
        // Don't expand strictly to the given requested limit if it's only a very small increase, but instead geometrically grow capacity.
        // For small filesizes (<1MB), perform size*2 geometric increase, but for large sizes, do a much more conservative size*1.125 increase to
        // avoid overshooting the allocation cap by a very large margin.
        var CAPACITY_DOUBLING_MAX = 1024 * 1024;
        newCapacity = Math.max(newCapacity, (prevCapacity * (prevCapacity < CAPACITY_DOUBLING_MAX ? 2.0 : 1.125)) >>> 0);
        if (prevCapacity != 0) newCapacity = Math.max(newCapacity, 256); // At minimum allocate 256b for each file when expanding.
        var oldContents = node.contents;
        node.contents = new Uint8Array(newCapacity); // Allocate new storage.
        if (node.usedBytes > 0) node.contents.set(oldContents.subarray(0, node.usedBytes), 0); // Copy old data over to the new storage.
      },resizeFileStorage:function(node, newSize) {
        if (node.usedBytes == newSize) return;
        if (newSize == 0) {
          node.contents = null; // Fully decommit when requesting a resize to zero.
          node.usedBytes = 0;
        } else {
          var oldContents = node.contents;
          node.contents = new Uint8Array(newSize); // Allocate new storage.
          if (oldContents) {
            node.contents.set(oldContents.subarray(0, Math.min(newSize, node.usedBytes))); // Copy old data over to the new storage.
          }
          node.usedBytes = newSize;
        }
      },node_ops:{getattr:function(node) {
          var attr = {};
          // device numbers reuse inode numbers.
          attr.dev = FS.isChrdev(node.mode) ? node.id : 1;
          attr.ino = node.id;
          attr.mode = node.mode;
          attr.nlink = 1;
          attr.uid = 0;
          attr.gid = 0;
          attr.rdev = node.rdev;
          if (FS.isDir(node.mode)) {
            attr.size = 4096;
          } else if (FS.isFile(node.mode)) {
            attr.size = node.usedBytes;
          } else if (FS.isLink(node.mode)) {
            attr.size = node.link.length;
          } else {
            attr.size = 0;
          }
          attr.atime = new Date(node.timestamp);
          attr.mtime = new Date(node.timestamp);
          attr.ctime = new Date(node.timestamp);
          // NOTE: In our implementation, st_blocks = Math.ceil(st_size/st_blksize),
          //       but this is not required by the standard.
          attr.blksize = 4096;
          attr.blocks = Math.ceil(attr.size / attr.blksize);
          return attr;
        },setattr:function(node, attr) {
          if (attr.mode !== undefined) {
            node.mode = attr.mode;
          }
          if (attr.timestamp !== undefined) {
            node.timestamp = attr.timestamp;
          }
          if (attr.size !== undefined) {
            MEMFS.resizeFileStorage(node, attr.size);
          }
        },lookup:function(parent, name) {
          throw FS.genericErrors[44];
        },mknod:function(parent, name, mode, dev) {
          return MEMFS.createNode(parent, name, mode, dev);
        },rename:function(old_node, new_dir, new_name) {
          // if we're overwriting a directory at new_name, make sure it's empty.
          if (FS.isDir(old_node.mode)) {
            var new_node;
            try {
              new_node = FS.lookupNode(new_dir, new_name);
            } catch (e) {
            }
            if (new_node) {
              for (var i in new_node.contents) {
                throw new FS.ErrnoError(55);
              }
            }
          }
          // do the internal rewiring
          delete old_node.parent.contents[old_node.name];
          old_node.parent.timestamp = Date.now()
          old_node.name = new_name;
          new_dir.contents[new_name] = old_node;
          new_dir.timestamp = old_node.parent.timestamp;
          old_node.parent = new_dir;
        },unlink:function(parent, name) {
          delete parent.contents[name];
          parent.timestamp = Date.now();
        },rmdir:function(parent, name) {
          var node = FS.lookupNode(parent, name);
          for (var i in node.contents) {
            throw new FS.ErrnoError(55);
          }
          delete parent.contents[name];
          parent.timestamp = Date.now();
        },readdir:function(node) {
          var entries = ['.', '..'];
          for (var key in node.contents) {
            if (!node.contents.hasOwnProperty(key)) {
              continue;
            }
            entries.push(key);
          }
          return entries;
        },symlink:function(parent, newname, oldpath) {
          var node = MEMFS.createNode(parent, newname, 511 /* 0777 */ | 40960, 0);
          node.link = oldpath;
          return node;
        },readlink:function(node) {
          if (!FS.isLink(node.mode)) {
            throw new FS.ErrnoError(28);
          }
          return node.link;
        }},stream_ops:{read:function(stream, buffer, offset, length, position) {
          var contents = stream.node.contents;
          if (position >= stream.node.usedBytes) return 0;
          var size = Math.min(stream.node.usedBytes - position, length);
          assert(size >= 0);
          if (size > 8 && contents.subarray) { // non-trivial, and typed array
            buffer.set(contents.subarray(position, position + size), offset);
          } else {
            for (var i = 0; i < size; i++) buffer[offset + i] = contents[position + i];
          }
          return size;
        },write:function(stream, buffer, offset, length, position, canOwn) {
          // The data buffer should be a typed array view
          assert(!(buffer instanceof ArrayBuffer));
          // If the buffer is located in main memory (HEAP), and if
          // memory can grow, we can't hold on to references of the
          // memory buffer, as they may get invalidated. That means we
          // need to do copy its contents.
          if (buffer.buffer === HEAP8.buffer) {
            canOwn = false;
          }
  
          if (!length) return 0;
          var node = stream.node;
          node.timestamp = Date.now();
  
          if (buffer.subarray && (!node.contents || node.contents.subarray)) { // This write is from a typed array to a typed array?
            if (canOwn) {
              assert(position === 0, 'canOwn must imply no weird position inside the file');
              node.contents = buffer.subarray(offset, offset + length);
              node.usedBytes = length;
              return length;
            } else if (node.usedBytes === 0 && position === 0) { // If this is a simple first write to an empty file, do a fast set since we don't need to care about old data.
              node.contents = buffer.slice(offset, offset + length);
              node.usedBytes = length;
              return length;
            } else if (position + length <= node.usedBytes) { // Writing to an already allocated and used subrange of the file?
              node.contents.set(buffer.subarray(offset, offset + length), position);
              return length;
            }
          }
  
          // Appending to an existing file and we need to reallocate, or source data did not come as a typed array.
          MEMFS.expandFileStorage(node, position+length);
          if (node.contents.subarray && buffer.subarray) {
            // Use typed array write which is available.
            node.contents.set(buffer.subarray(offset, offset + length), position);
          } else {
            for (var i = 0; i < length; i++) {
             node.contents[position + i] = buffer[offset + i]; // Or fall back to manual write if not.
            }
          }
          node.usedBytes = Math.max(node.usedBytes, position + length);
          return length;
        },llseek:function(stream, offset, whence) {
          var position = offset;
          if (whence === 1) {
            position += stream.position;
          } else if (whence === 2) {
            if (FS.isFile(stream.node.mode)) {
              position += stream.node.usedBytes;
            }
          }
          if (position < 0) {
            throw new FS.ErrnoError(28);
          }
          return position;
        },allocate:function(stream, offset, length) {
          MEMFS.expandFileStorage(stream.node, offset + length);
          stream.node.usedBytes = Math.max(stream.node.usedBytes, offset + length);
        },mmap:function(stream, address, length, position, prot, flags) {
          if (address !== 0) {
            // We don't currently support location hints for the address of the mapping
            throw new FS.ErrnoError(28);
          }
          if (!FS.isFile(stream.node.mode)) {
            throw new FS.ErrnoError(43);
          }
          var ptr;
          var allocated;
          var contents = stream.node.contents;
          // Only make a new copy when MAP_PRIVATE is specified.
          if (!(flags & 2) && contents.buffer === buffer) {
            // We can't emulate MAP_SHARED when the file is not backed by the buffer
            // we're mapping to (e.g. the HEAP buffer).
            allocated = false;
            ptr = contents.byteOffset;
          } else {
            // Try to avoid unnecessary slices.
            if (position > 0 || position + length < contents.length) {
              if (contents.subarray) {
                contents = contents.subarray(position, position + length);
              } else {
                contents = Array.prototype.slice.call(contents, position, position + length);
              }
            }
            allocated = true;
            ptr = mmapAlloc(length);
            if (!ptr) {
              throw new FS.ErrnoError(48);
            }
            HEAP8.set(contents, ptr);
          }
          return { ptr: ptr, allocated: allocated };
        },msync:function(stream, buffer, offset, length, mmapFlags) {
          if (!FS.isFile(stream.node.mode)) {
            throw new FS.ErrnoError(43);
          }
          if (mmapFlags & 2) {
            // MAP_PRIVATE calls need not to be synced back to underlying fs
            return 0;
          }
  
          var bytesWritten = MEMFS.stream_ops.write(stream, buffer, 0, length, offset, false);
          // should we check if bytesWritten and length are the same?
          return 0;
        }}};
  
  var ERRNO_MESSAGES={0:"Success",1:"Arg list too long",2:"Permission denied",3:"Address already in use",4:"Address not available",5:"Address family not supported by protocol family",6:"No more processes",7:"Socket already connected",8:"Bad file number",9:"Trying to read unreadable message",10:"Mount device busy",11:"Operation canceled",12:"No children",13:"Connection aborted",14:"Connection refused",15:"Connection reset by peer",16:"File locking deadlock error",17:"Destination address required",18:"Math arg out of domain of func",19:"Quota exceeded",20:"File exists",21:"Bad address",22:"File too large",23:"Host is unreachable",24:"Identifier removed",25:"Illegal byte sequence",26:"Connection already in progress",27:"Interrupted system call",28:"Invalid argument",29:"I/O error",30:"Socket is already connected",31:"Is a directory",32:"Too many symbolic links",33:"Too many open files",34:"Too many links",35:"Message too long",36:"Multihop attempted",37:"File or path name too long",38:"Network interface is not configured",39:"Connection reset by network",40:"Network is unreachable",41:"Too many open files in system",42:"No buffer space available",43:"No such device",44:"No such file or directory",45:"Exec format error",46:"No record locks available",47:"The link has been severed",48:"Not enough core",49:"No message of desired type",50:"Protocol not available",51:"No space left on device",52:"Function not implemented",53:"Socket is not connected",54:"Not a directory",55:"Directory not empty",56:"State not recoverable",57:"Socket operation on non-socket",59:"Not a typewriter",60:"No such device or address",61:"Value too large for defined data type",62:"Previous owner died",63:"Not super-user",64:"Broken pipe",65:"Protocol error",66:"Unknown protocol",67:"Protocol wrong type for socket",68:"Math result not representable",69:"Read only file system",70:"Illegal seek",71:"No such process",72:"Stale file handle",73:"Connection timed out",74:"Text file busy",75:"Cross-device link",100:"Device not a stream",101:"Bad font file fmt",102:"Invalid slot",103:"Invalid request code",104:"No anode",105:"Block device required",106:"Channel number out of range",107:"Level 3 halted",108:"Level 3 reset",109:"Link number out of range",110:"Protocol driver not attached",111:"No CSI structure available",112:"Level 2 halted",113:"Invalid exchange",114:"Invalid request descriptor",115:"Exchange full",116:"No data (for no delay io)",117:"Timer expired",118:"Out of streams resources",119:"Machine is not on the network",120:"Package not installed",121:"The object is remote",122:"Advertise error",123:"Srmount error",124:"Communication error on send",125:"Cross mount point (not really error)",126:"Given log. name not unique",127:"f.d. invalid for this operation",128:"Remote address changed",129:"Can   access a needed shared lib",130:"Accessing a corrupted shared lib",131:".lib section in a.out corrupted",132:"Attempting to link in too many libs",133:"Attempting to exec a shared library",135:"Streams pipe error",136:"Too many users",137:"Socket type not supported",138:"Not supported",139:"Protocol family not supported",140:"Can't send after socket shutdown",141:"Too many references",142:"Host is down",148:"No medium (in tape drive)",156:"Level 2 not synchronized"};
  
  var ERRNO_CODES={EPERM:63,ENOENT:44,ESRCH:71,EINTR:27,EIO:29,ENXIO:60,E2BIG:1,ENOEXEC:45,EBADF:8,ECHILD:12,EAGAIN:6,EWOULDBLOCK:6,ENOMEM:48,EACCES:2,EFAULT:21,ENOTBLK:105,EBUSY:10,EEXIST:20,EXDEV:75,ENODEV:43,ENOTDIR:54,EISDIR:31,EINVAL:28,ENFILE:41,EMFILE:33,ENOTTY:59,ETXTBSY:74,EFBIG:22,ENOSPC:51,ESPIPE:70,EROFS:69,EMLINK:34,EPIPE:64,EDOM:18,ERANGE:68,ENOMSG:49,EIDRM:24,ECHRNG:106,EL2NSYNC:156,EL3HLT:107,EL3RST:108,ELNRNG:109,EUNATCH:110,ENOCSI:111,EL2HLT:112,EDEADLK:16,ENOLCK:46,EBADE:113,EBADR:114,EXFULL:115,ENOANO:104,EBADRQC:103,EBADSLT:102,EDEADLOCK:16,EBFONT:101,ENOSTR:100,ENODATA:116,ETIME:117,ENOSR:118,ENONET:119,ENOPKG:120,EREMOTE:121,ENOLINK:47,EADV:122,ESRMNT:123,ECOMM:124,EPROTO:65,EMULTIHOP:36,EDOTDOT:125,EBADMSG:9,ENOTUNIQ:126,EBADFD:127,EREMCHG:128,ELIBACC:129,ELIBBAD:130,ELIBSCN:131,ELIBMAX:132,ELIBEXEC:133,ENOSYS:52,ENOTEMPTY:55,ENAMETOOLONG:37,ELOOP:32,EOPNOTSUPP:138,EPFNOSUPPORT:139,ECONNRESET:15,ENOBUFS:42,EAFNOSUPPORT:5,EPROTOTYPE:67,ENOTSOCK:57,ENOPROTOOPT:50,ESHUTDOWN:140,ECONNREFUSED:14,EADDRINUSE:3,ECONNABORTED:13,ENETUNREACH:40,ENETDOWN:38,ETIMEDOUT:73,EHOSTDOWN:142,EHOSTUNREACH:23,EINPROGRESS:26,EALREADY:7,EDESTADDRREQ:17,EMSGSIZE:35,EPROTONOSUPPORT:66,ESOCKTNOSUPPORT:137,EADDRNOTAVAIL:4,ENETRESET:39,EISCONN:30,ENOTCONN:53,ETOOMANYREFS:141,EUSERS:136,EDQUOT:19,ESTALE:72,ENOTSUP:138,ENOMEDIUM:148,EILSEQ:25,EOVERFLOW:61,ECANCELED:11,ENOTRECOVERABLE:56,EOWNERDEAD:62,ESTRPIPE:135};
  var FS={root:null,mounts:[],devices:{},streams:[],nextInode:1,nameTable:null,currentPath:"/",initialized:false,ignorePermissions:true,trackingDelegate:{},tracking:{openFlags:{READ:1,WRITE:2}},ErrnoError:null,genericErrors:{},filesystems:null,syncFSRequests:0,lookupPath:function(path, opts) {
        path = PATH_FS.resolve(FS.cwd(), path);
        opts = opts || {};
  
        if (!path) return { path: '', node: null };
  
        var defaults = {
          follow_mount: true,
          recurse_count: 0
        };
        for (var key in defaults) {
          if (opts[key] === undefined) {
            opts[key] = defaults[key];
          }
        }
  
        if (opts.recurse_count > 8) {  // max recursive lookup of 8
          throw new FS.ErrnoError(32);
        }
  
        // split the path
        var parts = PATH.normalizeArray(path.split('/').filter(function(p) {
          return !!p;
        }), false);
  
        // start at the root
        var current = FS.root;
        var current_path = '/';
  
        for (var i = 0; i < parts.length; i++) {
          var islast = (i === parts.length-1);
          if (islast && opts.parent) {
            // stop resolving
            break;
          }
  
          current = FS.lookupNode(current, parts[i]);
          current_path = PATH.join2(current_path, parts[i]);
  
          // jump to the mount's root node if this is a mountpoint
          if (FS.isMountpoint(current)) {
            if (!islast || (islast && opts.follow_mount)) {
              current = current.mounted.root;
            }
          }
  
          // by default, lookupPath will not follow a symlink if it is the final path component.
          // setting opts.follow = true will override this behavior.
          if (!islast || opts.follow) {
            var count = 0;
            while (FS.isLink(current.mode)) {
              var link = FS.readlink(current_path);
              current_path = PATH_FS.resolve(PATH.dirname(current_path), link);
  
              var lookup = FS.lookupPath(current_path, { recurse_count: opts.recurse_count });
              current = lookup.node;
  
              if (count++ > 40) {  // limit max consecutive symlinks to 40 (SYMLOOP_MAX).
                throw new FS.ErrnoError(32);
              }
            }
          }
        }
  
        return { path: current_path, node: current };
      },getPath:function(node) {
        var path;
        while (true) {
          if (FS.isRoot(node)) {
            var mount = node.mount.mountpoint;
            if (!path) return mount;
            return mount[mount.length-1] !== '/' ? mount + '/' + path : mount + path;
          }
          path = path ? node.name + '/' + path : node.name;
          node = node.parent;
        }
      },hashName:function(parentid, name) {
        var hash = 0;
  
        for (var i = 0; i < name.length; i++) {
          hash = ((hash << 5) - hash + name.charCodeAt(i)) | 0;
        }
        return ((parentid + hash) >>> 0) % FS.nameTable.length;
      },hashAddNode:function(node) {
        var hash = FS.hashName(node.parent.id, node.name);
        node.name_next = FS.nameTable[hash];
        FS.nameTable[hash] = node;
      },hashRemoveNode:function(node) {
        var hash = FS.hashName(node.parent.id, node.name);
        if (FS.nameTable[hash] === node) {
          FS.nameTable[hash] = node.name_next;
        } else {
          var current = FS.nameTable[hash];
          while (current) {
            if (current.name_next === node) {
              current.name_next = node.name_next;
              break;
            }
            current = current.name_next;
          }
        }
      },lookupNode:function(parent, name) {
        var errCode = FS.mayLookup(parent);
        if (errCode) {
          throw new FS.ErrnoError(errCode, parent);
        }
        var hash = FS.hashName(parent.id, name);
        for (var node = FS.nameTable[hash]; node; node = node.name_next) {
          var nodeName = node.name;
          if (node.parent.id === parent.id && nodeName === name) {
            return node;
          }
        }
        // if we failed to find it in the cache, call into the VFS
        return FS.lookup(parent, name);
      },createNode:function(parent, name, mode, rdev) {
        assert(typeof parent === 'object')
        var node = new FS.FSNode(parent, name, mode, rdev);
  
        FS.hashAddNode(node);
  
        return node;
      },destroyNode:function(node) {
        FS.hashRemoveNode(node);
      },isRoot:function(node) {
        return node === node.parent;
      },isMountpoint:function(node) {
        return !!node.mounted;
      },isFile:function(mode) {
        return (mode & 61440) === 32768;
      },isDir:function(mode) {
        return (mode & 61440) === 16384;
      },isLink:function(mode) {
        return (mode & 61440) === 40960;
      },isChrdev:function(mode) {
        return (mode & 61440) === 8192;
      },isBlkdev:function(mode) {
        return (mode & 61440) === 24576;
      },isFIFO:function(mode) {
        return (mode & 61440) === 4096;
      },isSocket:function(mode) {
        return (mode & 49152) === 49152;
      },flagModes:{"r":0,"r+":2,"w":577,"w+":578,"a":1089,"a+":1090},modeStringToFlags:function(str) {
        var flags = FS.flagModes[str];
        if (typeof flags === 'undefined') {
          throw new Error('Unknown file open mode: ' + str);
        }
        return flags;
      },flagsToPermissionString:function(flag) {
        var perms = ['r', 'w', 'rw'][flag & 3];
        if ((flag & 512)) {
          perms += 'w';
        }
        return perms;
      },nodePermissions:function(node, perms) {
        if (FS.ignorePermissions) {
          return 0;
        }
        // return 0 if any user, group or owner bits are set.
        if (perms.includes('r') && !(node.mode & 292)) {
          return 2;
        } else if (perms.includes('w') && !(node.mode & 146)) {
          return 2;
        } else if (perms.includes('x') && !(node.mode & 73)) {
          return 2;
        }
        return 0;
      },mayLookup:function(dir) {
        var errCode = FS.nodePermissions(dir, 'x');
        if (errCode) return errCode;
        if (!dir.node_ops.lookup) return 2;
        return 0;
      },mayCreate:function(dir, name) {
        try {
          var node = FS.lookupNode(dir, name);
          return 20;
        } catch (e) {
        }
        return FS.nodePermissions(dir, 'wx');
      },mayDelete:function(dir, name, isdir) {
        var node;
        try {
          node = FS.lookupNode(dir, name);
        } catch (e) {
          return e.errno;
        }
        var errCode = FS.nodePermissions(dir, 'wx');
        if (errCode) {
          return errCode;
        }
        if (isdir) {
          if (!FS.isDir(node.mode)) {
            return 54;
          }
          if (FS.isRoot(node) || FS.getPath(node) === FS.cwd()) {
            return 10;
          }
        } else {
          if (FS.isDir(node.mode)) {
            return 31;
          }
        }
        return 0;
      },mayOpen:function(node, flags) {
        if (!node) {
          return 44;
        }
        if (FS.isLink(node.mode)) {
          return 32;
        } else if (FS.isDir(node.mode)) {
          if (FS.flagsToPermissionString(flags) !== 'r' || // opening for write
              (flags & 512)) { // TODO: check for O_SEARCH? (== search for dir only)
            return 31;
          }
        }
        return FS.nodePermissions(node, FS.flagsToPermissionString(flags));
      },MAX_OPEN_FDS:4096,nextfd:function(fd_start, fd_end) {
        fd_start = fd_start || 0;
        fd_end = fd_end || FS.MAX_OPEN_FDS;
        for (var fd = fd_start; fd <= fd_end; fd++) {
          if (!FS.streams[fd]) {
            return fd;
          }
        }
        throw new FS.ErrnoError(33);
      },getStream:function(fd) {
        return FS.streams[fd];
      },createStream:function(stream, fd_start, fd_end) {
        if (!FS.FSStream) {
          FS.FSStream = /** @constructor */ function(){};
          FS.FSStream.prototype = {
            object: {
              get: function() { return this.node; },
              set: function(val) { this.node = val; }
            },
            isRead: {
              get: function() { return (this.flags & 2097155) !== 1; }
            },
            isWrite: {
              get: function() { return (this.flags & 2097155) !== 0; }
            },
            isAppend: {
              get: function() { return (this.flags & 1024); }
            }
          };
        }
        // clone it, so we can return an instance of FSStream
        var newStream = new FS.FSStream();
        for (var p in stream) {
          newStream[p] = stream[p];
        }
        stream = newStream;
        var fd = FS.nextfd(fd_start, fd_end);
        stream.fd = fd;
        FS.streams[fd] = stream;
        return stream;
      },closeStream:function(fd) {
        FS.streams[fd] = null;
      },chrdev_stream_ops:{open:function(stream) {
          var device = FS.getDevice(stream.node.rdev);
          // override node's stream ops with the device's
          stream.stream_ops = device.stream_ops;
          // forward the open call
          if (stream.stream_ops.open) {
            stream.stream_ops.open(stream);
          }
        },llseek:function() {
          throw new FS.ErrnoError(70);
        }},major:function(dev) {
        return ((dev) >> 8);
      },minor:function(dev) {
        return ((dev) & 0xff);
      },makedev:function(ma, mi) {
        return ((ma) << 8 | (mi));
      },registerDevice:function(dev, ops) {
        FS.devices[dev] = { stream_ops: ops };
      },getDevice:function(dev) {
        return FS.devices[dev];
      },getMounts:function(mount) {
        var mounts = [];
        var check = [mount];
  
        while (check.length) {
          var m = check.pop();
  
          mounts.push(m);
  
          check.push.apply(check, m.mounts);
        }
  
        return mounts;
      },syncfs:function(populate, callback) {
        if (typeof(populate) === 'function') {
          callback = populate;
          populate = false;
        }
  
        FS.syncFSRequests++;
  
        if (FS.syncFSRequests > 1) {
          err('warning: ' + FS.syncFSRequests + ' FS.syncfs operations in flight at once, probably just doing extra work');
        }
  
        var mounts = FS.getMounts(FS.root.mount);
        var completed = 0;
  
        function doCallback(errCode) {
          assert(FS.syncFSRequests > 0);
          FS.syncFSRequests--;
          return callback(errCode);
        }
  
        function done(errCode) {
          if (errCode) {
            if (!done.errored) {
              done.errored = true;
              return doCallback(errCode);
            }
            return;
          }
          if (++completed >= mounts.length) {
            doCallback(null);
          }
        };
  
        // sync all mounts
        mounts.forEach(function (mount) {
          if (!mount.type.syncfs) {
            return done(null);
          }
          mount.type.syncfs(mount, populate, done);
        });
      },mount:function(type, opts, mountpoint) {
        if (typeof type === 'string') {
          // The filesystem was not included, and instead we have an error
          // message stored in the variable.
          throw type;
        }
        var root = mountpoint === '/';
        var pseudo = !mountpoint;
        var node;
  
        if (root && FS.root) {
          throw new FS.ErrnoError(10);
        } else if (!root && !pseudo) {
          var lookup = FS.lookupPath(mountpoint, { follow_mount: false });
  
          mountpoint = lookup.path;  // use the absolute path
          node = lookup.node;
  
          if (FS.isMountpoint(node)) {
            throw new FS.ErrnoError(10);
          }
  
          if (!FS.isDir(node.mode)) {
            throw new FS.ErrnoError(54);
          }
        }
  
        var mount = {
          type: type,
          opts: opts,
          mountpoint: mountpoint,
          mounts: []
        };
  
        // create a root node for the fs
        var mountRoot = type.mount(mount);
        mountRoot.mount = mount;
        mount.root = mountRoot;
  
        if (root) {
          FS.root = mountRoot;
        } else if (node) {
          // set as a mountpoint
          node.mounted = mount;
  
          // add the new mount to the current mount's children
          if (node.mount) {
            node.mount.mounts.push(mount);
          }
        }
  
        return mountRoot;
      },unmount:function (mountpoint) {
        var lookup = FS.lookupPath(mountpoint, { follow_mount: false });
  
        if (!FS.isMountpoint(lookup.node)) {
          throw new FS.ErrnoError(28);
        }
  
        // destroy the nodes for this mount, and all its child mounts
        var node = lookup.node;
        var mount = node.mounted;
        var mounts = FS.getMounts(mount);
  
        Object.keys(FS.nameTable).forEach(function (hash) {
          var current = FS.nameTable[hash];
  
          while (current) {
            var next = current.name_next;
  
            if (mounts.includes(current.mount)) {
              FS.destroyNode(current);
            }
  
            current = next;
          }
        });
  
        // no longer a mountpoint
        node.mounted = null;
  
        // remove this mount from the child mounts
        var idx = node.mount.mounts.indexOf(mount);
        assert(idx !== -1);
        node.mount.mounts.splice(idx, 1);
      },lookup:function(parent, name) {
        return parent.node_ops.lookup(parent, name);
      },mknod:function(path, mode, dev) {
        var lookup = FS.lookupPath(path, { parent: true });
        var parent = lookup.node;
        var name = PATH.basename(path);
        if (!name || name === '.' || name === '..') {
          throw new FS.ErrnoError(28);
        }
        var errCode = FS.mayCreate(parent, name);
        if (errCode) {
          throw new FS.ErrnoError(errCode);
        }
        if (!parent.node_ops.mknod) {
          throw new FS.ErrnoError(63);
        }
        return parent.node_ops.mknod(parent, name, mode, dev);
      },create:function(path, mode) {
        mode = mode !== undefined ? mode : 438 /* 0666 */;
        mode &= 4095;
        mode |= 32768;
        return FS.mknod(path, mode, 0);
      },mkdir:function(path, mode) {
        mode = mode !== undefined ? mode : 511 /* 0777 */;
        mode &= 511 | 512;
        mode |= 16384;
        return FS.mknod(path, mode, 0);
      },mkdirTree:function(path, mode) {
        var dirs = path.split('/');
        var d = '';
        for (var i = 0; i < dirs.length; ++i) {
          if (!dirs[i]) continue;
          d += '/' + dirs[i];
          try {
            FS.mkdir(d, mode);
          } catch(e) {
            if (e.errno != 20) throw e;
          }
        }
      },mkdev:function(path, mode, dev) {
        if (typeof(dev) === 'undefined') {
          dev = mode;
          mode = 438 /* 0666 */;
        }
        mode |= 8192;
        return FS.mknod(path, mode, dev);
      },symlink:function(oldpath, newpath) {
        if (!PATH_FS.resolve(oldpath)) {
          throw new FS.ErrnoError(44);
        }
        var lookup = FS.lookupPath(newpath, { parent: true });
        var parent = lookup.node;
        if (!parent) {
          throw new FS.ErrnoError(44);
        }
        var newname = PATH.basename(newpath);
        var errCode = FS.mayCreate(parent, newname);
        if (errCode) {
          throw new FS.ErrnoError(errCode);
        }
        if (!parent.node_ops.symlink) {
          throw new FS.ErrnoError(63);
        }
        return parent.node_ops.symlink(parent, newname, oldpath);
      },rename:function(old_path, new_path) {
        var old_dirname = PATH.dirname(old_path);
        var new_dirname = PATH.dirname(new_path);
        var old_name = PATH.basename(old_path);
        var new_name = PATH.basename(new_path);
        // parents must exist
        var lookup, old_dir, new_dir;
  
        // let the errors from non existant directories percolate up
        lookup = FS.lookupPath(old_path, { parent: true });
        old_dir = lookup.node;
        lookup = FS.lookupPath(new_path, { parent: true });
        new_dir = lookup.node;
  
        if (!old_dir || !new_dir) throw new FS.ErrnoError(44);
        // need to be part of the same mount
        if (old_dir.mount !== new_dir.mount) {
          throw new FS.ErrnoError(75);
        }
        // source must exist
        var old_node = FS.lookupNode(old_dir, old_name);
        // old path should not be an ancestor of the new path
        var relative = PATH_FS.relative(old_path, new_dirname);
        if (relative.charAt(0) !== '.') {
          throw new FS.ErrnoError(28);
        }
        // new path should not be an ancestor of the old path
        relative = PATH_FS.relative(new_path, old_dirname);
        if (relative.charAt(0) !== '.') {
          throw new FS.ErrnoError(55);
        }
        // see if the new path already exists
        var new_node;
        try {
          new_node = FS.lookupNode(new_dir, new_name);
        } catch (e) {
          // not fatal
        }
        // early out if nothing needs to change
        if (old_node === new_node) {
          return;
        }
        // we'll need to delete the old entry
        var isdir = FS.isDir(old_node.mode);
        var errCode = FS.mayDelete(old_dir, old_name, isdir);
        if (errCode) {
          throw new FS.ErrnoError(errCode);
        }
        // need delete permissions if we'll be overwriting.
        // need create permissions if new doesn't already exist.
        errCode = new_node ?
          FS.mayDelete(new_dir, new_name, isdir) :
          FS.mayCreate(new_dir, new_name);
        if (errCode) {
          throw new FS.ErrnoError(errCode);
        }
        if (!old_dir.node_ops.rename) {
          throw new FS.ErrnoError(63);
        }
        if (FS.isMountpoint(old_node) || (new_node && FS.isMountpoint(new_node))) {
          throw new FS.ErrnoError(10);
        }
        // if we are going to change the parent, check write permissions
        if (new_dir !== old_dir) {
          errCode = FS.nodePermissions(old_dir, 'w');
          if (errCode) {
            throw new FS.ErrnoError(errCode);
          }
        }
        try {
          if (FS.trackingDelegate['willMovePath']) {
            FS.trackingDelegate['willMovePath'](old_path, new_path);
          }
        } catch(e) {
          err("FS.trackingDelegate['willMovePath']('"+old_path+"', '"+new_path+"') threw an exception: " + e.message);
        }
        // remove the node from the lookup hash
        FS.hashRemoveNode(old_node);
        // do the underlying fs rename
        try {
          old_dir.node_ops.rename(old_node, new_dir, new_name);
        } catch (e) {
          throw e;
        } finally {
          // add the node back to the hash (in case node_ops.rename
          // changed its name)
          FS.hashAddNode(old_node);
        }
        try {
          if (FS.trackingDelegate['onMovePath']) FS.trackingDelegate['onMovePath'](old_path, new_path);
        } catch(e) {
          err("FS.trackingDelegate['onMovePath']('"+old_path+"', '"+new_path+"') threw an exception: " + e.message);
        }
      },rmdir:function(path) {
        var lookup = FS.lookupPath(path, { parent: true });
        var parent = lookup.node;
        var name = PATH.basename(path);
        var node = FS.lookupNode(parent, name);
        var errCode = FS.mayDelete(parent, name, true);
        if (errCode) {
          throw new FS.ErrnoError(errCode);
        }
        if (!parent.node_ops.rmdir) {
          throw new FS.ErrnoError(63);
        }
        if (FS.isMountpoint(node)) {
          throw new FS.ErrnoError(10);
        }
        try {
          if (FS.trackingDelegate['willDeletePath']) {
            FS.trackingDelegate['willDeletePath'](path);
          }
        } catch(e) {
          err("FS.trackingDelegate['willDeletePath']('"+path+"') threw an exception: " + e.message);
        }
        parent.node_ops.rmdir(parent, name);
        FS.destroyNode(node);
        try {
          if (FS.trackingDelegate['onDeletePath']) FS.trackingDelegate['onDeletePath'](path);
        } catch(e) {
          err("FS.trackingDelegate['onDeletePath']('"+path+"') threw an exception: " + e.message);
        }
      },readdir:function(path) {
        var lookup = FS.lookupPath(path, { follow: true });
        var node = lookup.node;
        if (!node.node_ops.readdir) {
          throw new FS.ErrnoError(54);
        }
        return node.node_ops.readdir(node);
      },unlink:function(path) {
        var lookup = FS.lookupPath(path, { parent: true });
        var parent = lookup.node;
        var name = PATH.basename(path);
        var node = FS.lookupNode(parent, name);
        var errCode = FS.mayDelete(parent, name, false);
        if (errCode) {
          // According to POSIX, we should map EISDIR to EPERM, but
          // we instead do what Linux does (and we must, as we use
          // the musl linux libc).
          throw new FS.ErrnoError(errCode);
        }
        if (!parent.node_ops.unlink) {
          throw new FS.ErrnoError(63);
        }
        if (FS.isMountpoint(node)) {
          throw new FS.ErrnoError(10);
        }
        try {
          if (FS.trackingDelegate['willDeletePath']) {
            FS.trackingDelegate['willDeletePath'](path);
          }
        } catch(e) {
          err("FS.trackingDelegate['willDeletePath']('"+path+"') threw an exception: " + e.message);
        }
        parent.node_ops.unlink(parent, name);
        FS.destroyNode(node);
        try {
          if (FS.trackingDelegate['onDeletePath']) FS.trackingDelegate['onDeletePath'](path);
        } catch(e) {
          err("FS.trackingDelegate['onDeletePath']('"+path+"') threw an exception: " + e.message);
        }
      },readlink:function(path) {
        var lookup = FS.lookupPath(path);
        var link = lookup.node;
        if (!link) {
          throw new FS.ErrnoError(44);
        }
        if (!link.node_ops.readlink) {
          throw new FS.ErrnoError(28);
        }
        return PATH_FS.resolve(FS.getPath(link.parent), link.node_ops.readlink(link));
      },stat:function(path, dontFollow) {
        var lookup = FS.lookupPath(path, { follow: !dontFollow });
        var node = lookup.node;
        if (!node) {
          throw new FS.ErrnoError(44);
        }
        if (!node.node_ops.getattr) {
          throw new FS.ErrnoError(63);
        }
        return node.node_ops.getattr(node);
      },lstat:function(path) {
        return FS.stat(path, true);
      },chmod:function(path, mode, dontFollow) {
        var node;
        if (typeof path === 'string') {
          var lookup = FS.lookupPath(path, { follow: !dontFollow });
          node = lookup.node;
        } else {
          node = path;
        }
        if (!node.node_ops.setattr) {
          throw new FS.ErrnoError(63);
        }
        node.node_ops.setattr(node, {
          mode: (mode & 4095) | (node.mode & ~4095),
          timestamp: Date.now()
        });
      },lchmod:function(path, mode) {
        FS.chmod(path, mode, true);
      },fchmod:function(fd, mode) {
        var stream = FS.getStream(fd);
        if (!stream) {
          throw new FS.ErrnoError(8);
        }
        FS.chmod(stream.node, mode);
      },chown:function(path, uid, gid, dontFollow) {
        var node;
        if (typeof path === 'string') {
          var lookup = FS.lookupPath(path, { follow: !dontFollow });
          node = lookup.node;
        } else {
          node = path;
        }
        if (!node.node_ops.setattr) {
          throw new FS.ErrnoError(63);
        }
        node.node_ops.setattr(node, {
          timestamp: Date.now()
          // we ignore the uid / gid for now
        });
      },lchown:function(path, uid, gid) {
        FS.chown(path, uid, gid, true);
      },fchown:function(fd, uid, gid) {
        var stream = FS.getStream(fd);
        if (!stream) {
          throw new FS.ErrnoError(8);
        }
        FS.chown(stream.node, uid, gid);
      },truncate:function(path, len) {
        if (len < 0) {
          throw new FS.ErrnoError(28);
        }
        var node;
        if (typeof path === 'string') {
          var lookup = FS.lookupPath(path, { follow: true });
          node = lookup.node;
        } else {
          node = path;
        }
        if (!node.node_ops.setattr) {
          throw new FS.ErrnoError(63);
        }
        if (FS.isDir(node.mode)) {
          throw new FS.ErrnoError(31);
        }
        if (!FS.isFile(node.mode)) {
          throw new FS.ErrnoError(28);
        }
        var errCode = FS.nodePermissions(node, 'w');
        if (errCode) {
          throw new FS.ErrnoError(errCode);
        }
        node.node_ops.setattr(node, {
          size: len,
          timestamp: Date.now()
        });
      },ftruncate:function(fd, len) {
        var stream = FS.getStream(fd);
        if (!stream) {
          throw new FS.ErrnoError(8);
        }
        if ((stream.flags & 2097155) === 0) {
          throw new FS.ErrnoError(28);
        }
        FS.truncate(stream.node, len);
      },utime:function(path, atime, mtime) {
        var lookup = FS.lookupPath(path, { follow: true });
        var node = lookup.node;
        node.node_ops.setattr(node, {
          timestamp: Math.max(atime, mtime)
        });
      },open:function(path, flags, mode, fd_start, fd_end) {
        if (path === "") {
          throw new FS.ErrnoError(44);
        }
        flags = typeof flags === 'string' ? FS.modeStringToFlags(flags) : flags;
        mode = typeof mode === 'undefined' ? 438 /* 0666 */ : mode;
        if ((flags & 64)) {
          mode = (mode & 4095) | 32768;
        } else {
          mode = 0;
        }
        var node;
        if (typeof path === 'object') {
          node = path;
        } else {
          path = PATH.normalize(path);
          try {
            var lookup = FS.lookupPath(path, {
              follow: !(flags & 131072)
            });
            node = lookup.node;
          } catch (e) {
            // ignore
          }
        }
        // perhaps we need to create the node
        var created = false;
        if ((flags & 64)) {
          if (node) {
            // if O_CREAT and O_EXCL are set, error out if the node already exists
            if ((flags & 128)) {
              throw new FS.ErrnoError(20);
            }
          } else {
            // node doesn't exist, try to create it
            node = FS.mknod(path, mode, 0);
            created = true;
          }
        }
        if (!node) {
          throw new FS.ErrnoError(44);
        }
        // can't truncate a device
        if (FS.isChrdev(node.mode)) {
          flags &= ~512;
        }
        // if asked only for a directory, then this must be one
        if ((flags & 65536) && !FS.isDir(node.mode)) {
          throw new FS.ErrnoError(54);
        }
        // check permissions, if this is not a file we just created now (it is ok to
        // create and write to a file with read-only permissions; it is read-only
        // for later use)
        if (!created) {
          var errCode = FS.mayOpen(node, flags);
          if (errCode) {
            throw new FS.ErrnoError(errCode);
          }
        }
        // do truncation if necessary
        if ((flags & 512)) {
          FS.truncate(node, 0);
        }
        // we've already handled these, don't pass down to the underlying vfs
        flags &= ~(128 | 512 | 131072);
  
        // register the stream with the filesystem
        var stream = FS.createStream({
          node: node,
          path: FS.getPath(node),  // we want the absolute path to the node
          flags: flags,
          seekable: true,
          position: 0,
          stream_ops: node.stream_ops,
          // used by the file family libc calls (fopen, fwrite, ferror, etc.)
          ungotten: [],
          error: false
        }, fd_start, fd_end);
        // call the new stream's open function
        if (stream.stream_ops.open) {
          stream.stream_ops.open(stream);
        }
        if (Module['logReadFiles'] && !(flags & 1)) {
          if (!FS.readFiles) FS.readFiles = {};
          if (!(path in FS.readFiles)) {
            FS.readFiles[path] = 1;
            err("FS.trackingDelegate error on read file: " + path);
          }
        }
        try {
          if (FS.trackingDelegate['onOpenFile']) {
            var trackingFlags = 0;
            if ((flags & 2097155) !== 1) {
              trackingFlags |= FS.tracking.openFlags.READ;
            }
            if ((flags & 2097155) !== 0) {
              trackingFlags |= FS.tracking.openFlags.WRITE;
            }
            FS.trackingDelegate['onOpenFile'](path, trackingFlags);
          }
        } catch(e) {
          err("FS.trackingDelegate['onOpenFile']('"+path+"', flags) threw an exception: " + e.message);
        }
        return stream;
      },close:function(stream) {
        if (FS.isClosed(stream)) {
          throw new FS.ErrnoError(8);
        }
        if (stream.getdents) stream.getdents = null; // free readdir state
        try {
          if (stream.stream_ops.close) {
            stream.stream_ops.close(stream);
          }
        } catch (e) {
          throw e;
        } finally {
          FS.closeStream(stream.fd);
        }
        stream.fd = null;
      },isClosed:function(stream) {
        return stream.fd === null;
      },llseek:function(stream, offset, whence) {
        if (FS.isClosed(stream)) {
          throw new FS.ErrnoError(8);
        }
        if (!stream.seekable || !stream.stream_ops.llseek) {
          throw new FS.ErrnoError(70);
        }
        if (whence != 0 && whence != 1 && whence != 2) {
          throw new FS.ErrnoError(28);
        }
        stream.position = stream.stream_ops.llseek(stream, offset, whence);
        stream.ungotten = [];
        return stream.position;
      },read:function(stream, buffer, offset, length, position) {
        if (length < 0 || position < 0) {
          throw new FS.ErrnoError(28);
        }
        if (FS.isClosed(stream)) {
          throw new FS.ErrnoError(8);
        }
        if ((stream.flags & 2097155) === 1) {
          throw new FS.ErrnoError(8);
        }
        if (FS.isDir(stream.node.mode)) {
          throw new FS.ErrnoError(31);
        }
        if (!stream.stream_ops.read) {
          throw new FS.ErrnoError(28);
        }
        var seeking = typeof position !== 'undefined';
        if (!seeking) {
          position = stream.position;
        } else if (!stream.seekable) {
          throw new FS.ErrnoError(70);
        }
        var bytesRead = stream.stream_ops.read(stream, buffer, offset, length, position);
        if (!seeking) stream.position += bytesRead;
        return bytesRead;
      },write:function(stream, buffer, offset, length, position, canOwn) {
        if (length < 0 || position < 0) {
          throw new FS.ErrnoError(28);
        }
        if (FS.isClosed(stream)) {
          throw new FS.ErrnoError(8);
        }
        if ((stream.flags & 2097155) === 0) {
          throw new FS.ErrnoError(8);
        }
        if (FS.isDir(stream.node.mode)) {
          throw new FS.ErrnoError(31);
        }
        if (!stream.stream_ops.write) {
          throw new FS.ErrnoError(28);
        }
        if (stream.seekable && stream.flags & 1024) {
          // seek to the end before writing in append mode
          FS.llseek(stream, 0, 2);
        }
        var seeking = typeof position !== 'undefined';
        if (!seeking) {
          position = stream.position;
        } else if (!stream.seekable) {
          throw new FS.ErrnoError(70);
        }
        var bytesWritten = stream.stream_ops.write(stream, buffer, offset, length, position, canOwn);
        if (!seeking) stream.position += bytesWritten;
        try {
          if (stream.path && FS.trackingDelegate['onWriteToFile']) FS.trackingDelegate['onWriteToFile'](stream.path);
        } catch(e) {
          err("FS.trackingDelegate['onWriteToFile']('"+stream.path+"') threw an exception: " + e.message);
        }
        return bytesWritten;
      },allocate:function(stream, offset, length) {
        if (FS.isClosed(stream)) {
          throw new FS.ErrnoError(8);
        }
        if (offset < 0 || length <= 0) {
          throw new FS.ErrnoError(28);
        }
        if ((stream.flags & 2097155) === 0) {
          throw new FS.ErrnoError(8);
        }
        if (!FS.isFile(stream.node.mode) && !FS.isDir(stream.node.mode)) {
          throw new FS.ErrnoError(43);
        }
        if (!stream.stream_ops.allocate) {
          throw new FS.ErrnoError(138);
        }
        stream.stream_ops.allocate(stream, offset, length);
      },mmap:function(stream, address, length, position, prot, flags) {
        // User requests writing to file (prot & PROT_WRITE != 0).
        // Checking if we have permissions to write to the file unless
        // MAP_PRIVATE flag is set. According to POSIX spec it is possible
        // to write to file opened in read-only mode with MAP_PRIVATE flag,
        // as all modifications will be visible only in the memory of
        // the current process.
        if ((prot & 2) !== 0
            && (flags & 2) === 0
            && (stream.flags & 2097155) !== 2) {
          throw new FS.ErrnoError(2);
        }
        if ((stream.flags & 2097155) === 1) {
          throw new FS.ErrnoError(2);
        }
        if (!stream.stream_ops.mmap) {
          throw new FS.ErrnoError(43);
        }
        return stream.stream_ops.mmap(stream, address, length, position, prot, flags);
      },msync:function(stream, buffer, offset, length, mmapFlags) {
        if (!stream || !stream.stream_ops.msync) {
          return 0;
        }
        return stream.stream_ops.msync(stream, buffer, offset, length, mmapFlags);
      },munmap:function(stream) {
        return 0;
      },ioctl:function(stream, cmd, arg) {
        if (!stream.stream_ops.ioctl) {
          throw new FS.ErrnoError(59);
        }
        return stream.stream_ops.ioctl(stream, cmd, arg);
      },readFile:function(path, opts) {
        opts = opts || {};
        opts.flags = opts.flags || 0;
        opts.encoding = opts.encoding || 'binary';
        if (opts.encoding !== 'utf8' && opts.encoding !== 'binary') {
          throw new Error('Invalid encoding type "' + opts.encoding + '"');
        }
        var ret;
        var stream = FS.open(path, opts.flags);
        var stat = FS.stat(path);
        var length = stat.size;
        var buf = new Uint8Array(length);
        FS.read(stream, buf, 0, length, 0);
        if (opts.encoding === 'utf8') {
          ret = UTF8ArrayToString(buf, 0);
        } else if (opts.encoding === 'binary') {
          ret = buf;
        }
        FS.close(stream);
        return ret;
      },writeFile:function(path, data, opts) {
        opts = opts || {};
        opts.flags = opts.flags || 577;
        var stream = FS.open(path, opts.flags, opts.mode);
        if (typeof data === 'string') {
          var buf = new Uint8Array(lengthBytesUTF8(data)+1);
          var actualNumBytes = stringToUTF8Array(data, buf, 0, buf.length);
          FS.write(stream, buf, 0, actualNumBytes, undefined, opts.canOwn);
        } else if (ArrayBuffer.isView(data)) {
          FS.write(stream, data, 0, data.byteLength, undefined, opts.canOwn);
        } else {
          throw new Error('Unsupported data type');
        }
        FS.close(stream);
      },cwd:function() {
        return FS.currentPath;
      },chdir:function(path) {
        var lookup = FS.lookupPath(path, { follow: true });
        if (lookup.node === null) {
          throw new FS.ErrnoError(44);
        }
        if (!FS.isDir(lookup.node.mode)) {
          throw new FS.ErrnoError(54);
        }
        var errCode = FS.nodePermissions(lookup.node, 'x');
        if (errCode) {
          throw new FS.ErrnoError(errCode);
        }
        FS.currentPath = lookup.path;
      },createDefaultDirectories:function() {
        FS.mkdir('/tmp');
        FS.mkdir('/home');
        FS.mkdir('/home/web_user');
      },createDefaultDevices:function() {
        // create /dev
        FS.mkdir('/dev');
        // setup /dev/null
        FS.registerDevice(FS.makedev(1, 3), {
          read: function() { return 0; },
          write: function(stream, buffer, offset, length, pos) { return length; }
        });
        FS.mkdev('/dev/null', FS.makedev(1, 3));
        // setup /dev/tty and /dev/tty1
        // stderr needs to print output using err() rather than out()
        // so we register a second tty just for it.
        TTY.register(FS.makedev(5, 0), TTY.default_tty_ops);
        TTY.register(FS.makedev(6, 0), TTY.default_tty1_ops);
        FS.mkdev('/dev/tty', FS.makedev(5, 0));
        FS.mkdev('/dev/tty1', FS.makedev(6, 0));
        // setup /dev/[u]random
        var random_device = getRandomDevice();
        FS.createDevice('/dev', 'random', random_device);
        FS.createDevice('/dev', 'urandom', random_device);
        // we're not going to emulate the actual shm device,
        // just create the tmp dirs that reside in it commonly
        FS.mkdir('/dev/shm');
        FS.mkdir('/dev/shm/tmp');
      },createSpecialDirectories:function() {
        // create /proc/self/fd which allows /proc/self/fd/6 => readlink gives the
        // name of the stream for fd 6 (see test_unistd_ttyname)
        FS.mkdir('/proc');
        var proc_self = FS.mkdir('/proc/self');
        FS.mkdir('/proc/self/fd');
        FS.mount({
          mount: function() {
            var node = FS.createNode(proc_self, 'fd', 16384 | 511 /* 0777 */, 73);
            node.node_ops = {
              lookup: function(parent, name) {
                var fd = +name;
                var stream = FS.getStream(fd);
                if (!stream) throw new FS.ErrnoError(8);
                var ret = {
                  parent: null,
                  mount: { mountpoint: 'fake' },
                  node_ops: { readlink: function() { return stream.path } }
                };
                ret.parent = ret; // make it look like a simple root node
                return ret;
              }
            };
            return node;
          }
        }, {}, '/proc/self/fd');
      },createStandardStreams:function() {
        // TODO deprecate the old functionality of a single
        // input / output callback and that utilizes FS.createDevice
        // and instead require a unique set of stream ops
  
        // by default, we symlink the standard streams to the
        // default tty devices. however, if the standard streams
        // have been overwritten we create a unique device for
        // them instead.
        if (Module['stdin']) {
          FS.createDevice('/dev', 'stdin', Module['stdin']);
        } else {
          FS.symlink('/dev/tty', '/dev/stdin');
        }
        if (Module['stdout']) {
          FS.createDevice('/dev', 'stdout', null, Module['stdout']);
        } else {
          FS.symlink('/dev/tty', '/dev/stdout');
        }
        if (Module['stderr']) {
          FS.createDevice('/dev', 'stderr', null, Module['stderr']);
        } else {
          FS.symlink('/dev/tty1', '/dev/stderr');
        }
  
        // open default streams for the stdin, stdout and stderr devices
        var stdin = FS.open('/dev/stdin', 0);
        var stdout = FS.open('/dev/stdout', 1);
        var stderr = FS.open('/dev/stderr', 1);
        assert(stdin.fd === 0, 'invalid handle for stdin (' + stdin.fd + ')');
        assert(stdout.fd === 1, 'invalid handle for stdout (' + stdout.fd + ')');
        assert(stderr.fd === 2, 'invalid handle for stderr (' + stderr.fd + ')');
      },ensureErrnoError:function() {
        if (FS.ErrnoError) return;
        FS.ErrnoError = /** @this{Object} */ function ErrnoError(errno, node) {
          this.node = node;
          this.setErrno = /** @this{Object} */ function(errno) {
            this.errno = errno;
            for (var key in ERRNO_CODES) {
              if (ERRNO_CODES[key] === errno) {
                this.code = key;
                break;
              }
            }
          };
          this.setErrno(errno);
          this.message = ERRNO_MESSAGES[errno];
  
          // Try to get a maximally helpful stack trace. On Node.js, getting Error.stack
          // now ensures it shows what we want.
          if (this.stack) {
            // Define the stack property for Node.js 4, which otherwise errors on the next line.
            Object.defineProperty(this, "stack", { value: (new Error).stack, writable: true });
            this.stack = demangleAll(this.stack);
          }
        };
        FS.ErrnoError.prototype = new Error();
        FS.ErrnoError.prototype.constructor = FS.ErrnoError;
        // Some errors may happen quite a bit, to avoid overhead we reuse them (and suffer a lack of stack info)
        [44].forEach(function(code) {
          FS.genericErrors[code] = new FS.ErrnoError(code);
          FS.genericErrors[code].stack = '<generic error, no stack>';
        });
      },staticInit:function() {
        FS.ensureErrnoError();
  
        FS.nameTable = new Array(4096);
  
        FS.mount(MEMFS, {}, '/');
  
        FS.createDefaultDirectories();
        FS.createDefaultDevices();
        FS.createSpecialDirectories();
  
        FS.filesystems = {
          'MEMFS': MEMFS,
        };
      },init:function(input, output, error) {
        assert(!FS.init.initialized, 'FS.init was previously called. If you want to initialize later with custom parameters, remove any earlier calls (note that one is automatically added to the generated code)');
        FS.init.initialized = true;
  
        FS.ensureErrnoError();
  
        // Allow Module.stdin etc. to provide defaults, if none explicitly passed to us here
        Module['stdin'] = input || Module['stdin'];
        Module['stdout'] = output || Module['stdout'];
        Module['stderr'] = error || Module['stderr'];
  
        FS.createStandardStreams();
      },quit:function() {
        FS.init.initialized = false;
        // force-flush all streams, so we get musl std streams printed out
        var fflush = Module['_fflush'];
        if (fflush) fflush(0);
        // close all of our streams
        for (var i = 0; i < FS.streams.length; i++) {
          var stream = FS.streams[i];
          if (!stream) {
            continue;
          }
          FS.close(stream);
        }
      },getMode:function(canRead, canWrite) {
        var mode = 0;
        if (canRead) mode |= 292 | 73;
        if (canWrite) mode |= 146;
        return mode;
      },findObject:function(path, dontResolveLastLink) {
        var ret = FS.analyzePath(path, dontResolveLastLink);
        if (ret.exists) {
          return ret.object;
        } else {
          return null;
        }
      },analyzePath:function(path, dontResolveLastLink) {
        // operate from within the context of the symlink's target
        try {
          var lookup = FS.lookupPath(path, { follow: !dontResolveLastLink });
          path = lookup.path;
        } catch (e) {
        }
        var ret = {
          isRoot: false, exists: false, error: 0, name: null, path: null, object: null,
          parentExists: false, parentPath: null, parentObject: null
        };
        try {
          var lookup = FS.lookupPath(path, { parent: true });
          ret.parentExists = true;
          ret.parentPath = lookup.path;
          ret.parentObject = lookup.node;
          ret.name = PATH.basename(path);
          lookup = FS.lookupPath(path, { follow: !dontResolveLastLink });
          ret.exists = true;
          ret.path = lookup.path;
          ret.object = lookup.node;
          ret.name = lookup.node.name;
          ret.isRoot = lookup.path === '/';
        } catch (e) {
          ret.error = e.errno;
        };
        return ret;
      },createPath:function(parent, path, canRead, canWrite) {
        parent = typeof parent === 'string' ? parent : FS.getPath(parent);
        var parts = path.split('/').reverse();
        while (parts.length) {
          var part = parts.pop();
          if (!part) continue;
          var current = PATH.join2(parent, part);
          try {
            FS.mkdir(current);
          } catch (e) {
            // ignore EEXIST
          }
          parent = current;
        }
        return current;
      },createFile:function(parent, name, properties, canRead, canWrite) {
        var path = PATH.join2(typeof parent === 'string' ? parent : FS.getPath(parent), name);
        var mode = FS.getMode(canRead, canWrite);
        return FS.create(path, mode);
      },createDataFile:function(parent, name, data, canRead, canWrite, canOwn) {
        var path = name ? PATH.join2(typeof parent === 'string' ? parent : FS.getPath(parent), name) : parent;
        var mode = FS.getMode(canRead, canWrite);
        var node = FS.create(path, mode);
        if (data) {
          if (typeof data === 'string') {
            var arr = new Array(data.length);
            for (var i = 0, len = data.length; i < len; ++i) arr[i] = data.charCodeAt(i);
            data = arr;
          }
          // make sure we can write to the file
          FS.chmod(node, mode | 146);
          var stream = FS.open(node, 577);
          FS.write(stream, data, 0, data.length, 0, canOwn);
          FS.close(stream);
          FS.chmod(node, mode);
        }
        return node;
      },createDevice:function(parent, name, input, output) {
        var path = PATH.join2(typeof parent === 'string' ? parent : FS.getPath(parent), name);
        var mode = FS.getMode(!!input, !!output);
        if (!FS.createDevice.major) FS.createDevice.major = 64;
        var dev = FS.makedev(FS.createDevice.major++, 0);
        // Create a fake device that a set of stream ops to emulate
        // the old behavior.
        FS.registerDevice(dev, {
          open: function(stream) {
            stream.seekable = false;
          },
          close: function(stream) {
            // flush any pending line data
            if (output && output.buffer && output.buffer.length) {
              output(10);
            }
          },
          read: function(stream, buffer, offset, length, pos /* ignored */) {
            var bytesRead = 0;
            for (var i = 0; i < length; i++) {
              var result;
              try {
                result = input();
              } catch (e) {
                throw new FS.ErrnoError(29);
              }
              if (result === undefined && bytesRead === 0) {
                throw new FS.ErrnoError(6);
              }
              if (result === null || result === undefined) break;
              bytesRead++;
              buffer[offset+i] = result;
            }
            if (bytesRead) {
              stream.node.timestamp = Date.now();
            }
            return bytesRead;
          },
          write: function(stream, buffer, offset, length, pos) {
            for (var i = 0; i < length; i++) {
              try {
                output(buffer[offset+i]);
              } catch (e) {
                throw new FS.ErrnoError(29);
              }
            }
            if (length) {
              stream.node.timestamp = Date.now();
            }
            return i;
          }
        });
        return FS.mkdev(path, mode, dev);
      },forceLoadFile:function(obj) {
        if (obj.isDevice || obj.isFolder || obj.link || obj.contents) return true;
        if (typeof XMLHttpRequest !== 'undefined') {
          throw new Error("Lazy loading should have been performed (contents set) in createLazyFile, but it was not. Lazy loading only works in web workers. Use --embed-file or --preload-file in emcc on the main thread.");
        } else if (read_) {
          // Command-line.
          try {
            // WARNING: Can't read binary files in V8's d8 or tracemonkey's js, as
            //          read() will try to parse UTF8.
            obj.contents = intArrayFromString(read_(obj.url), true);
            obj.usedBytes = obj.contents.length;
          } catch (e) {
            throw new FS.ErrnoError(29);
          }
        } else {
          throw new Error('Cannot load without read() or XMLHttpRequest.');
        }
      },createLazyFile:function(parent, name, url, canRead, canWrite) {
        // Lazy chunked Uint8Array (implements get and length from Uint8Array). Actual getting is abstracted away for eventual reuse.
        /** @constructor */
        function LazyUint8Array() {
          this.lengthKnown = false;
          this.chunks = []; // Loaded chunks. Index is the chunk number
        }
        LazyUint8Array.prototype.get = /** @this{Object} */ function LazyUint8Array_get(idx) {
          if (idx > this.length-1 || idx < 0) {
            return undefined;
          }
          var chunkOffset = idx % this.chunkSize;
          var chunkNum = (idx / this.chunkSize)|0;
          return this.getter(chunkNum)[chunkOffset];
        };
        LazyUint8Array.prototype.setDataGetter = function LazyUint8Array_setDataGetter(getter) {
          this.getter = getter;
        };
        LazyUint8Array.prototype.cacheLength = function LazyUint8Array_cacheLength() {
          // Find length
          var xhr = new XMLHttpRequest();
          xhr.open('HEAD', url, false);
          xhr.send(null);
          if (!(xhr.status >= 200 && xhr.status < 300 || xhr.status === 304)) throw new Error("Couldn't load " + url + ". Status: " + xhr.status);
          var datalength = Number(xhr.getResponseHeader("Content-length"));
          var header;
          var hasByteServing = (header = xhr.getResponseHeader("Accept-Ranges")) && header === "bytes";
          var usesGzip = (header = xhr.getResponseHeader("Content-Encoding")) && header === "gzip";
  
          var chunkSize = 1024*1024; // Chunk size in bytes
  
          if (!hasByteServing) chunkSize = datalength;
  
          // Function to get a range from the remote URL.
          var doXHR = (function(from, to) {
            if (from > to) throw new Error("invalid range (" + from + ", " + to + ") or no bytes requested!");
            if (to > datalength-1) throw new Error("only " + datalength + " bytes available! programmer error!");
  
            // TODO: Use mozResponseArrayBuffer, responseStream, etc. if available.
            var xhr = new XMLHttpRequest();
            xhr.open('GET', url, false);
            if (datalength !== chunkSize) xhr.setRequestHeader("Range", "bytes=" + from + "-" + to);
  
            // Some hints to the browser that we want binary data.
            if (typeof Uint8Array != 'undefined') xhr.responseType = 'arraybuffer';
            if (xhr.overrideMimeType) {
              xhr.overrideMimeType('text/plain; charset=x-user-defined');
            }
  
            xhr.send(null);
            if (!(xhr.status >= 200 && xhr.status < 300 || xhr.status === 304)) throw new Error("Couldn't load " + url + ". Status: " + xhr.status);
            if (xhr.response !== undefined) {
              return new Uint8Array(/** @type{Array<number>} */(xhr.response || []));
            } else {
              return intArrayFromString(xhr.responseText || '', true);
            }
          });
          var lazyArray = this;
          lazyArray.setDataGetter(function(chunkNum) {
            var start = chunkNum * chunkSize;
            var end = (chunkNum+1) * chunkSize - 1; // including this byte
            end = Math.min(end, datalength-1); // if datalength-1 is selected, this is the last block
            if (typeof(lazyArray.chunks[chunkNum]) === "undefined") {
              lazyArray.chunks[chunkNum] = doXHR(start, end);
            }
            if (typeof(lazyArray.chunks[chunkNum]) === "undefined") throw new Error("doXHR failed!");
            return lazyArray.chunks[chunkNum];
          });
  
          if (usesGzip || !datalength) {
            // if the server uses gzip or doesn't supply the length, we have to download the whole file to get the (uncompressed) length
            chunkSize = datalength = 1; // this will force getter(0)/doXHR do download the whole file
            datalength = this.getter(0).length;
            chunkSize = datalength;
            out("LazyFiles on gzip forces download of the whole file when length is accessed");
          }
  
          this._length = datalength;
          this._chunkSize = chunkSize;
          this.lengthKnown = true;
        };
        if (typeof XMLHttpRequest !== 'undefined') {
          if (!ENVIRONMENT_IS_WORKER) throw 'Cannot do synchronous binary XHRs outside webworkers in modern browsers. Use --embed-file or --preload-file in emcc';
          var lazyArray = new LazyUint8Array();
          Object.defineProperties(lazyArray, {
            length: {
              get: /** @this{Object} */ function() {
                if (!this.lengthKnown) {
                  this.cacheLength();
                }
                return this._length;
              }
            },
            chunkSize: {
              get: /** @this{Object} */ function() {
                if (!this.lengthKnown) {
                  this.cacheLength();
                }
                return this._chunkSize;
              }
            }
          });
  
          var properties = { isDevice: false, contents: lazyArray };
        } else {
          var properties = { isDevice: false, url: url };
        }
  
        var node = FS.createFile(parent, name, properties, canRead, canWrite);
        // This is a total hack, but I want to get this lazy file code out of the
        // core of MEMFS. If we want to keep this lazy file concept I feel it should
        // be its own thin LAZYFS proxying calls to MEMFS.
        if (properties.contents) {
          node.contents = properties.contents;
        } else if (properties.url) {
          node.contents = null;
          node.url = properties.url;
        }
        // Add a function that defers querying the file size until it is asked the first time.
        Object.defineProperties(node, {
          usedBytes: {
            get: /** @this {FSNode} */ function() { return this.contents.length; }
          }
        });
        // override each stream op with one that tries to force load the lazy file first
        var stream_ops = {};
        var keys = Object.keys(node.stream_ops);
        keys.forEach(function(key) {
          var fn = node.stream_ops[key];
          stream_ops[key] = function forceLoadLazyFile() {
            FS.forceLoadFile(node);
            return fn.apply(null, arguments);
          };
        });
        // use a custom read function
        stream_ops.read = function stream_ops_read(stream, buffer, offset, length, position) {
          FS.forceLoadFile(node);
          var contents = stream.node.contents;
          if (position >= contents.length)
            return 0;
          var size = Math.min(contents.length - position, length);
          assert(size >= 0);
          if (contents.slice) { // normal array
            for (var i = 0; i < size; i++) {
              buffer[offset + i] = contents[position + i];
            }
          } else {
            for (var i = 0; i < size; i++) { // LazyUint8Array from sync binary XHR
              buffer[offset + i] = contents.get(position + i);
            }
          }
          return size;
        };
        node.stream_ops = stream_ops;
        return node;
      },createPreloadedFile:function(parent, name, url, canRead, canWrite, onload, onerror, dontCreateFile, canOwn, preFinish) {
        Browser.init(); // XXX perhaps this method should move onto Browser?
        // TODO we should allow people to just pass in a complete filename instead
        // of parent and name being that we just join them anyways
        var fullname = name ? PATH_FS.resolve(PATH.join2(parent, name)) : parent;
        var dep = getUniqueRunDependency('cp ' + fullname); // might have several active requests for the same fullname
        function processData(byteArray) {
          function finish(byteArray) {
            if (preFinish) preFinish();
            if (!dontCreateFile) {
              FS.createDataFile(parent, name, byteArray, canRead, canWrite, canOwn);
            }
            if (onload) onload();
            removeRunDependency(dep);
          }
          var handled = false;
          Module['preloadPlugins'].forEach(function(plugin) {
            if (handled) return;
            if (plugin['canHandle'](fullname)) {
              plugin['handle'](byteArray, fullname, finish, function() {
                if (onerror) onerror();
                removeRunDependency(dep);
              });
              handled = true;
            }
          });
          if (!handled) finish(byteArray);
        }
        addRunDependency(dep);
        if (typeof url == 'string') {
          Browser.asyncLoad(url, function(byteArray) {
            processData(byteArray);
          }, onerror);
        } else {
          processData(url);
        }
      },indexedDB:function() {
        return window.indexedDB || window.mozIndexedDB || window.webkitIndexedDB || window.msIndexedDB;
      },DB_NAME:function() {
        return 'EM_FS_' + window.location.pathname;
      },DB_VERSION:20,DB_STORE_NAME:"FILE_DATA",saveFilesToDB:function(paths, onload, onerror) {
        onload = onload || function(){};
        onerror = onerror || function(){};
        var indexedDB = FS.indexedDB();
        try {
          var openRequest = indexedDB.open(FS.DB_NAME(), FS.DB_VERSION);
        } catch (e) {
          return onerror(e);
        }
        openRequest.onupgradeneeded = function openRequest_onupgradeneeded() {
          out('creating db');
          var db = openRequest.result;
          db.createObjectStore(FS.DB_STORE_NAME);
        };
        openRequest.onsuccess = function openRequest_onsuccess() {
          var db = openRequest.result;
          var transaction = db.transaction([FS.DB_STORE_NAME], 'readwrite');
          var files = transaction.objectStore(FS.DB_STORE_NAME);
          var ok = 0, fail = 0, total = paths.length;
          function finish() {
            if (fail == 0) onload(); else onerror();
          }
          paths.forEach(function(path) {
            var putRequest = files.put(FS.analyzePath(path).object.contents, path);
            putRequest.onsuccess = function putRequest_onsuccess() { ok++; if (ok + fail == total) finish() };
            putRequest.onerror = function putRequest_onerror() { fail++; if (ok + fail == total) finish() };
          });
          transaction.onerror = onerror;
        };
        openRequest.onerror = onerror;
      },loadFilesFromDB:function(paths, onload, onerror) {
        onload = onload || function(){};
        onerror = onerror || function(){};
        var indexedDB = FS.indexedDB();
        try {
          var openRequest = indexedDB.open(FS.DB_NAME(), FS.DB_VERSION);
        } catch (e) {
          return onerror(e);
        }
        openRequest.onupgradeneeded = onerror; // no database to load from
        openRequest.onsuccess = function openRequest_onsuccess() {
          var db = openRequest.result;
          try {
            var transaction = db.transaction([FS.DB_STORE_NAME], 'readonly');
          } catch(e) {
            onerror(e);
            return;
          }
          var files = transaction.objectStore(FS.DB_STORE_NAME);
          var ok = 0, fail = 0, total = paths.length;
          function finish() {
            if (fail == 0) onload(); else onerror();
          }
          paths.forEach(function(path) {
            var getRequest = files.get(path);
            getRequest.onsuccess = function getRequest_onsuccess() {
              if (FS.analyzePath(path).exists) {
                FS.unlink(path);
              }
              FS.createDataFile(PATH.dirname(path), PATH.basename(path), getRequest.result, true, true, true);
              ok++;
              if (ok + fail == total) finish();
            };
            getRequest.onerror = function getRequest_onerror() { fail++; if (ok + fail == total) finish() };
          });
          transaction.onerror = onerror;
        };
        openRequest.onerror = onerror;
      },absolutePath:function() {
        abort('FS.absolutePath has been removed; use PATH_FS.resolve instead');
      },createFolder:function() {
        abort('FS.createFolder has been removed; use FS.mkdir instead');
      },createLink:function() {
        abort('FS.createLink has been removed; use FS.symlink instead');
      },joinPath:function() {
        abort('FS.joinPath has been removed; use PATH.join instead');
      },mmapAlloc:function() {
        abort('FS.mmapAlloc has been replaced by the top level function mmapAlloc');
      },standardizePath:function() {
        abort('FS.standardizePath has been removed; use PATH.normalize instead');
      }};
  var SYSCALLS={mappings:{},DEFAULT_POLLMASK:5,umask:511,calculateAt:function(dirfd, path, allowEmpty) {
        if (path[0] === '/') {
          return path;
        }
        // relative path
        var dir;
        if (dirfd === -100) {
          dir = FS.cwd();
        } else {
          var dirstream = FS.getStream(dirfd);
          if (!dirstream) throw new FS.ErrnoError(8);
          dir = dirstream.path;
        }
        if (path.length == 0) {
          if (!allowEmpty) {
            throw new FS.ErrnoError(44);;
          }
          return dir;
        }
        return PATH.join2(dir, path);
      },doStat:function(func, path, buf) {
        try {
          var stat = func(path);
        } catch (e) {
          if (e && e.node && PATH.normalize(path) !== PATH.normalize(FS.getPath(e.node))) {
            // an error occurred while trying to look up the path; we should just report ENOTDIR
            return -54;
          }
          throw e;
        }
        HEAP32[((buf)>>2)] = stat.dev;
        HEAP32[(((buf)+(4))>>2)] = 0;
        HEAP32[(((buf)+(8))>>2)] = stat.ino;
        HEAP32[(((buf)+(12))>>2)] = stat.mode;
        HEAP32[(((buf)+(16))>>2)] = stat.nlink;
        HEAP32[(((buf)+(20))>>2)] = stat.uid;
        HEAP32[(((buf)+(24))>>2)] = stat.gid;
        HEAP32[(((buf)+(28))>>2)] = stat.rdev;
        HEAP32[(((buf)+(32))>>2)] = 0;
        (tempI64 = [stat.size>>>0,(tempDouble=stat.size,(+(Math.abs(tempDouble))) >= 1.0 ? (tempDouble > 0.0 ? ((Math.min((+(Math.floor((tempDouble)/4294967296.0))), 4294967295.0))|0)>>>0 : (~~((+(Math.ceil((tempDouble - +(((~~(tempDouble)))>>>0))/4294967296.0)))))>>>0) : 0)],HEAP32[(((buf)+(40))>>2)] = tempI64[0],HEAP32[(((buf)+(44))>>2)] = tempI64[1]);
        HEAP32[(((buf)+(48))>>2)] = 4096;
        HEAP32[(((buf)+(52))>>2)] = stat.blocks;
        HEAP32[(((buf)+(56))>>2)] = (stat.atime.getTime() / 1000)|0;
        HEAP32[(((buf)+(60))>>2)] = 0;
        HEAP32[(((buf)+(64))>>2)] = (stat.mtime.getTime() / 1000)|0;
        HEAP32[(((buf)+(68))>>2)] = 0;
        HEAP32[(((buf)+(72))>>2)] = (stat.ctime.getTime() / 1000)|0;
        HEAP32[(((buf)+(76))>>2)] = 0;
        (tempI64 = [stat.ino>>>0,(tempDouble=stat.ino,(+(Math.abs(tempDouble))) >= 1.0 ? (tempDouble > 0.0 ? ((Math.min((+(Math.floor((tempDouble)/4294967296.0))), 4294967295.0))|0)>>>0 : (~~((+(Math.ceil((tempDouble - +(((~~(tempDouble)))>>>0))/4294967296.0)))))>>>0) : 0)],HEAP32[(((buf)+(80))>>2)] = tempI64[0],HEAP32[(((buf)+(84))>>2)] = tempI64[1]);
        return 0;
      },doMsync:function(addr, stream, len, flags, offset) {
        var buffer = HEAPU8.slice(addr, addr + len);
        FS.msync(stream, buffer, offset, len, flags);
      },doMkdir:function(path, mode) {
        // remove a trailing slash, if one - /a/b/ has basename of '', but
        // we want to create b in the context of this function
        path = PATH.normalize(path);
        if (path[path.length-1] === '/') path = path.substr(0, path.length-1);
        FS.mkdir(path, mode, 0);
        return 0;
      },doMknod:function(path, mode, dev) {
        // we don't want this in the JS API as it uses mknod to create all nodes.
        switch (mode & 61440) {
          case 32768:
          case 8192:
          case 24576:
          case 4096:
          case 49152:
            break;
          default: return -28;
        }
        FS.mknod(path, mode, dev);
        return 0;
      },doReadlink:function(path, buf, bufsize) {
        if (bufsize <= 0) return -28;
        var ret = FS.readlink(path);
  
        var len = Math.min(bufsize, lengthBytesUTF8(ret));
        var endChar = HEAP8[buf+len];
        stringToUTF8(ret, buf, bufsize+1);
        // readlink is one of the rare functions that write out a C string, but does never append a null to the output buffer(!)
        // stringToUTF8() always appends a null byte, so restore the character under the null byte after the write.
        HEAP8[buf+len] = endChar;
  
        return len;
      },doAccess:function(path, amode) {
        if (amode & ~7) {
          // need a valid mode
          return -28;
        }
        var node;
        var lookup = FS.lookupPath(path, { follow: true });
        node = lookup.node;
        if (!node) {
          return -44;
        }
        var perms = '';
        if (amode & 4) perms += 'r';
        if (amode & 2) perms += 'w';
        if (amode & 1) perms += 'x';
        if (perms /* otherwise, they've just passed F_OK */ && FS.nodePermissions(node, perms)) {
          return -2;
        }
        return 0;
      },doDup:function(path, flags, suggestFD) {
        var suggest = FS.getStream(suggestFD);
        if (suggest) FS.close(suggest);
        return FS.open(path, flags, 0, suggestFD, suggestFD).fd;
      },doReadv:function(stream, iov, iovcnt, offset) {
        var ret = 0;
        for (var i = 0; i < iovcnt; i++) {
          var ptr = HEAP32[(((iov)+(i*8))>>2)];
          var len = HEAP32[(((iov)+(i*8 + 4))>>2)];
          var curr = FS.read(stream, HEAP8,ptr, len, offset);
          if (curr < 0) return -1;
          ret += curr;
          if (curr < len) break; // nothing more to read
        }
        return ret;
      },doWritev:function(stream, iov, iovcnt, offset) {
        var ret = 0;
        for (var i = 0; i < iovcnt; i++) {
          var ptr = HEAP32[(((iov)+(i*8))>>2)];
          var len = HEAP32[(((iov)+(i*8 + 4))>>2)];
          var curr = FS.write(stream, HEAP8,ptr, len, offset);
          if (curr < 0) return -1;
          ret += curr;
        }
        return ret;
      },varargs:undefined,get:function() {
        assert(SYSCALLS.varargs != undefined);
        SYSCALLS.varargs += 4;
        var ret = HEAP32[(((SYSCALLS.varargs)-(4))>>2)];
        return ret;
      },getStr:function(ptr) {
        var ret = UTF8ToString(ptr);
        return ret;
      },getStreamFromFD:function(fd) {
        var stream = FS.getStream(fd);
        if (!stream) throw new FS.ErrnoError(8);
        return stream;
      },get64:function(low, high) {
        if (low >= 0) assert(high === 0);
        else assert(high === -1);
        return low;
      }};
  function ___sys_fcntl64(fd, cmd, varargs) {SYSCALLS.varargs = varargs;
  try {
  
      var stream = SYSCALLS.getStreamFromFD(fd);
      switch (cmd) {
        case 0: {
          var arg = SYSCALLS.get();
          if (arg < 0) {
            return -28;
          }
          var newStream;
          newStream = FS.open(stream.path, stream.flags, 0, arg);
          return newStream.fd;
        }
        case 1:
        case 2:
          return 0;  // FD_CLOEXEC makes no sense for a single process.
        case 3:
          return stream.flags;
        case 4: {
          var arg = SYSCALLS.get();
          stream.flags |= arg;
          return 0;
        }
        case 12:
        /* case 12: Currently in musl F_GETLK64 has same value as F_GETLK, so omitted to avoid duplicate case blocks. If that changes, uncomment this */ {
          
          var arg = SYSCALLS.get();
          var offset = 0;
          // We're always unlocked.
          HEAP16[(((arg)+(offset))>>1)] = 2;
          return 0;
        }
        case 13:
        case 14:
        /* case 13: Currently in musl F_SETLK64 has same value as F_SETLK, so omitted to avoid duplicate case blocks. If that changes, uncomment this */
        /* case 14: Currently in musl F_SETLKW64 has same value as F_SETLKW, so omitted to avoid duplicate case blocks. If that changes, uncomment this */
          
          
          return 0; // Pretend that the locking is successful.
        case 16:
        case 8:
          return -28; // These are for sockets. We don't have them fully implemented yet.
        case 9:
          // musl trusts getown return values, due to a bug where they must be, as they overlap with errors. just return -1 here, so fnctl() returns that, and we set errno ourselves.
          setErrNo(28);
          return -1;
        default: {
          return -28;
        }
      }
    } catch (e) {
    if (typeof FS === 'undefined' || !(e instanceof FS.ErrnoError)) abort(e);
    return -e.errno;
  }
  }

  function ___sys_ioctl(fd, op, varargs) {SYSCALLS.varargs = varargs;
  try {
  
      var stream = SYSCALLS.getStreamFromFD(fd);
      switch (op) {
        case 21509:
        case 21505: {
          if (!stream.tty) return -59;
          return 0;
        }
        case 21510:
        case 21511:
        case 21512:
        case 21506:
        case 21507:
        case 21508: {
          if (!stream.tty) return -59;
          return 0; // no-op, not actually adjusting terminal settings
        }
        case 21519: {
          if (!stream.tty) return -59;
          var argp = SYSCALLS.get();
          HEAP32[((argp)>>2)] = 0;
          return 0;
        }
        case 21520: {
          if (!stream.tty) return -59;
          return -28; // not supported
        }
        case 21531: {
          var argp = SYSCALLS.get();
          return FS.ioctl(stream, op, argp);
        }
        case 21523: {
          // TODO: in theory we should write to the winsize struct that gets
          // passed in, but for now musl doesn't read anything on it
          if (!stream.tty) return -59;
          return 0;
        }
        case 21524: {
          // TODO: technically, this ioctl call should change the window size.
          // but, since emscripten doesn't have any concept of a terminal window
          // yet, we'll just silently throw it away as we do TIOCGWINSZ
          if (!stream.tty) return -59;
          return 0;
        }
        default: abort('bad ioctl syscall ' + op);
      }
    } catch (e) {
    if (typeof FS === 'undefined' || !(e instanceof FS.ErrnoError)) abort(e);
    return -e.errno;
  }
  }

  function ___sys_open(path, flags, varargs) {SYSCALLS.varargs = varargs;
  try {
  
      var pathname = SYSCALLS.getStr(path);
      var mode = varargs ? SYSCALLS.get() : 0;
      var stream = FS.open(pathname, flags, mode);
      return stream.fd;
    } catch (e) {
    if (typeof FS === 'undefined' || !(e instanceof FS.ErrnoError)) abort(e);
    return -e.errno;
  }
  }

  function _abort() {
      abort();
    }

  var readAsmConstArgsArray=[];
  function readAsmConstArgs(sigPtr, buf) {
      // Nobody should have mutated _readAsmConstArgsArray underneath us to be something else than an array.
      assert(Array.isArray(readAsmConstArgsArray));
      // The input buffer is allocated on the stack, so it must be stack-aligned.
      assert(buf % 16 == 0);
      readAsmConstArgsArray.length = 0;
      var ch;
      // Most arguments are i32s, so shift the buffer pointer so it is a plain
      // index into HEAP32.
      buf >>= 2;
      while (ch = HEAPU8[sigPtr++]) {
        assert(ch === 100/*'d'*/ || ch === 102/*'f'*/ || ch === 105 /*'i'*/);
        // A double takes two 32-bit slots, and must also be aligned - the backend
        // will emit padding to avoid that.
        var double = ch < 105;
        if (double && (buf & 1)) buf++;
        readAsmConstArgsArray.push(double ? HEAPF64[buf++ >> 1] : HEAP32[buf]);
        ++buf;
      }
      return readAsmConstArgsArray;
    }
  function _emscripten_asm_const_int(code, sigPtr, argbuf) {
      var args = readAsmConstArgs(sigPtr, argbuf);
      if (!ASM_CONSTS.hasOwnProperty(code)) abort('No EM_ASM constant found at address ' + code);
      return ASM_CONSTS[code].apply(null, args);
    }

  var _emscripten_get_now;if (ENVIRONMENT_IS_NODE) {
    _emscripten_get_now = function() {
      var t = process['hrtime']();
      return t[0] * 1e3 + t[1] / 1e6;
    };
  } else if (typeof dateNow !== 'undefined') {
    _emscripten_get_now = dateNow;
  } else _emscripten_get_now = function() { return performance.now(); }
  ;

  function reallyNegative(x) {
      return x < 0 || (x === 0 && (1/x) === -Infinity);
    }
  
  function convertI32PairToI53(lo, hi) {
      // This function should not be getting called with too large unsigned numbers
      // in high part (if hi >= 0x7FFFFFFFF, one should have been calling
      // convertU32PairToI53())
      assert(hi === (hi|0));
      return (lo >>> 0) + hi * 4294967296;
    }
  
  function convertU32PairToI53(lo, hi) {
      return (lo >>> 0) + (hi >>> 0) * 4294967296;
    }
  
  function reSign(value, bits) {
      if (value <= 0) {
        return value;
      }
      var half = bits <= 32 ? Math.abs(1 << (bits-1)) // abs is needed if bits == 32
                            : Math.pow(2, bits-1);
      // for huge values, we can hit the precision limit and always get true here.
      // so don't do that but, in general there is no perfect solution here. With
      // 64-bit ints, we get rounding and errors
      // TODO: In i64 mode 1, resign the two parts separately and safely
      if (value >= half && (bits <= 32 || value > half)) {
        // Cannot bitshift half, as it may be at the limit of the bits JS uses in
        // bitshifts
        value = -2*half + value;
      }
      return value;
    }
  
  function unSign(value, bits) {
      if (value >= 0) {
        return value;
      }
      // Need some trickery, since if bits == 32, we are right at the limit of the
      // bits JS uses in bitshifts
      return bits <= 32 ? 2*Math.abs(1 << (bits-1)) + value
                        : Math.pow(2, bits)         + value;
    }
  
  function _strlen(ptr) {
      var end = ptr;
      while (HEAPU8[end]) ++end;
      return end - ptr;
    }
  function formatString(format, varargs) {
      assert((varargs & 3) === 0);
      var textIndex = format;
      var argIndex = varargs;
      // This must be called before reading a double or i64 vararg. It will bump the pointer properly.
      // It also does an assert on i32 values, so it's nice to call it before all varargs calls.
      function prepVararg(ptr, type) {
        if (type === 'double' || type === 'i64') {
          // move so the load is aligned
          if (ptr & 7) {
            assert((ptr & 7) === 4);
            ptr += 4;
          }
        } else {
          assert((ptr & 3) === 0);
        }
        return ptr;
      }
      function getNextArg(type) {
        // NOTE: Explicitly ignoring type safety. Otherwise this fails:
        //       int x = 4; printf("%c\n", (char)x);
        var ret;
        argIndex = prepVararg(argIndex, type);
        if (type === 'double') {
          ret = HEAPF64[((argIndex)>>3)];
          argIndex += 8;
        } else if (type == 'i64') {
          ret = [HEAP32[((argIndex)>>2)],
                 HEAP32[(((argIndex)+(4))>>2)]];
          argIndex += 8;
        } else {
          assert((argIndex & 3) === 0);
          type = 'i32'; // varargs are always i32, i64, or double
          ret = HEAP32[((argIndex)>>2)];
          argIndex += 4;
        }
        return ret;
      }
  
      var ret = [];
      var curr, next, currArg;
      while (1) {
        var startTextIndex = textIndex;
        curr = HEAP8[((textIndex)>>0)];
        if (curr === 0) break;
        next = HEAP8[((textIndex+1)>>0)];
        if (curr == 37) {
          // Handle flags.
          var flagAlwaysSigned = false;
          var flagLeftAlign = false;
          var flagAlternative = false;
          var flagZeroPad = false;
          var flagPadSign = false;
          flagsLoop: while (1) {
            switch (next) {
              case 43:
                flagAlwaysSigned = true;
                break;
              case 45:
                flagLeftAlign = true;
                break;
              case 35:
                flagAlternative = true;
                break;
              case 48:
                if (flagZeroPad) {
                  break flagsLoop;
                } else {
                  flagZeroPad = true;
                  break;
                }
              case 32:
                flagPadSign = true;
                break;
              default:
                break flagsLoop;
            }
            textIndex++;
            next = HEAP8[((textIndex+1)>>0)];
          }
  
          // Handle width.
          var width = 0;
          if (next == 42) {
            width = getNextArg('i32');
            textIndex++;
            next = HEAP8[((textIndex+1)>>0)];
          } else {
            while (next >= 48 && next <= 57) {
              width = width * 10 + (next - 48);
              textIndex++;
              next = HEAP8[((textIndex+1)>>0)];
            }
          }
  
          // Handle precision.
          var precisionSet = false, precision = -1;
          if (next == 46) {
            precision = 0;
            precisionSet = true;
            textIndex++;
            next = HEAP8[((textIndex+1)>>0)];
            if (next == 42) {
              precision = getNextArg('i32');
              textIndex++;
            } else {
              while (1) {
                var precisionChr = HEAP8[((textIndex+1)>>0)];
                if (precisionChr < 48 ||
                    precisionChr > 57) break;
                precision = precision * 10 + (precisionChr - 48);
                textIndex++;
              }
            }
            next = HEAP8[((textIndex+1)>>0)];
          }
          if (precision < 0) {
            precision = 6; // Standard default.
            precisionSet = false;
          }
  
          // Handle integer sizes. WARNING: These assume a 32-bit architecture!
          var argSize;
          switch (String.fromCharCode(next)) {
            case 'h':
              var nextNext = HEAP8[((textIndex+2)>>0)];
              if (nextNext == 104) {
                textIndex++;
                argSize = 1; // char (actually i32 in varargs)
              } else {
                argSize = 2; // short (actually i32 in varargs)
              }
              break;
            case 'l':
              var nextNext = HEAP8[((textIndex+2)>>0)];
              if (nextNext == 108) {
                textIndex++;
                argSize = 8; // long long
              } else {
                argSize = 4; // long
              }
              break;
            case 'L': // long long
            case 'q': // int64_t
            case 'j': // intmax_t
              argSize = 8;
              break;
            case 'z': // size_t
            case 't': // ptrdiff_t
            case 'I': // signed ptrdiff_t or unsigned size_t
              argSize = 4;
              break;
            default:
              argSize = null;
          }
          if (argSize) textIndex++;
          next = HEAP8[((textIndex+1)>>0)];
  
          // Handle type specifier.
          switch (String.fromCharCode(next)) {
            case 'd': case 'i': case 'u': case 'o': case 'x': case 'X': case 'p': {
              // Integer.
              var signed = next == 100 || next == 105;
              argSize = argSize || 4;
              currArg = getNextArg('i' + (argSize * 8));
              var argText;
              // Flatten i64-1 [low, high] into a (slightly rounded) double
              if (argSize == 8) {
                currArg = next == 117 ? convertU32PairToI53(currArg[0], currArg[1]) : convertI32PairToI53(currArg[0], currArg[1]);
              }
              // Truncate to requested size.
              if (argSize <= 4) {
                var limit = Math.pow(256, argSize) - 1;
                currArg = (signed ? reSign : unSign)(currArg & limit, argSize * 8);
              }
              // Format the number.
              var currAbsArg = Math.abs(currArg);
              var prefix = '';
              if (next == 100 || next == 105) {
                argText = reSign(currArg, 8 * argSize, 1).toString(10);
              } else if (next == 117) {
                argText = unSign(currArg, 8 * argSize, 1).toString(10);
                currArg = Math.abs(currArg);
              } else if (next == 111) {
                argText = (flagAlternative ? '0' : '') + currAbsArg.toString(8);
              } else if (next == 120 || next == 88) {
                prefix = (flagAlternative && currArg != 0) ? '0x' : '';
                if (currArg < 0) {
                  // Represent negative numbers in hex as 2's complement.
                  currArg = -currArg;
                  argText = (currAbsArg - 1).toString(16);
                  var buffer = [];
                  for (var i = 0; i < argText.length; i++) {
                    buffer.push((0xF - parseInt(argText[i], 16)).toString(16));
                  }
                  argText = buffer.join('');
                  while (argText.length < argSize * 2) argText = 'f' + argText;
                } else {
                  argText = currAbsArg.toString(16);
                }
                if (next == 88) {
                  prefix = prefix.toUpperCase();
                  argText = argText.toUpperCase();
                }
              } else if (next == 112) {
                if (currAbsArg === 0) {
                  argText = '(nil)';
                } else {
                  prefix = '0x';
                  argText = currAbsArg.toString(16);
                }
              }
              if (precisionSet) {
                while (argText.length < precision) {
                  argText = '0' + argText;
                }
              }
  
              // Add sign if needed
              if (currArg >= 0) {
                if (flagAlwaysSigned) {
                  prefix = '+' + prefix;
                } else if (flagPadSign) {
                  prefix = ' ' + prefix;
                }
              }
  
              // Move sign to prefix so we zero-pad after the sign
              if (argText.charAt(0) == '-') {
                prefix = '-' + prefix;
                argText = argText.substr(1);
              }
  
              // Add padding.
              while (prefix.length + argText.length < width) {
                if (flagLeftAlign) {
                  argText += ' ';
                } else {
                  if (flagZeroPad) {
                    argText = '0' + argText;
                  } else {
                    prefix = ' ' + prefix;
                  }
                }
              }
  
              // Insert the result into the buffer.
              argText = prefix + argText;
              argText.split('').forEach(function(chr) {
                ret.push(chr.charCodeAt(0));
              });
              break;
            }
            case 'f': case 'F': case 'e': case 'E': case 'g': case 'G': {
              // Float.
              currArg = getNextArg('double');
              var argText;
              if (isNaN(currArg)) {
                argText = 'nan';
                flagZeroPad = false;
              } else if (!isFinite(currArg)) {
                argText = (currArg < 0 ? '-' : '') + 'inf';
                flagZeroPad = false;
              } else {
                var isGeneral = false;
                var effectivePrecision = Math.min(precision, 20);
  
                // Convert g/G to f/F or e/E, as per:
                // http://pubs.opengroup.org/onlinepubs/9699919799/functions/printf.html
                if (next == 103 || next == 71) {
                  isGeneral = true;
                  precision = precision || 1;
                  var exponent = parseInt(currArg.toExponential(effectivePrecision).split('e')[1], 10);
                  if (precision > exponent && exponent >= -4) {
                    next = ((next == 103) ? 'f' : 'F').charCodeAt(0);
                    precision -= exponent + 1;
                  } else {
                    next = ((next == 103) ? 'e' : 'E').charCodeAt(0);
                    precision--;
                  }
                  effectivePrecision = Math.min(precision, 20);
                }
  
                if (next == 101 || next == 69) {
                  argText = currArg.toExponential(effectivePrecision);
                  // Make sure the exponent has at least 2 digits.
                  if (/[eE][-+]\d$/.test(argText)) {
                    argText = argText.slice(0, -1) + '0' + argText.slice(-1);
                  }
                } else if (next == 102 || next == 70) {
                  argText = currArg.toFixed(effectivePrecision);
                  if (currArg === 0 && reallyNegative(currArg)) {
                    argText = '-' + argText;
                  }
                }
  
                var parts = argText.split('e');
                if (isGeneral && !flagAlternative) {
                  // Discard trailing zeros and periods.
                  while (parts[0].length > 1 && parts[0].includes('.') &&
                         (parts[0].slice(-1) == '0' || parts[0].slice(-1) == '.')) {
                    parts[0] = parts[0].slice(0, -1);
                  }
                } else {
                  // Make sure we have a period in alternative mode.
                  if (flagAlternative && argText.indexOf('.') == -1) parts[0] += '.';
                  // Zero pad until required precision.
                  while (precision > effectivePrecision++) parts[0] += '0';
                }
                argText = parts[0] + (parts.length > 1 ? 'e' + parts[1] : '');
  
                // Capitalize 'E' if needed.
                if (next == 69) argText = argText.toUpperCase();
  
                // Add sign.
                if (currArg >= 0) {
                  if (flagAlwaysSigned) {
                    argText = '+' + argText;
                  } else if (flagPadSign) {
                    argText = ' ' + argText;
                  }
                }
              }
  
              // Add padding.
              while (argText.length < width) {
                if (flagLeftAlign) {
                  argText += ' ';
                } else {
                  if (flagZeroPad && (argText[0] == '-' || argText[0] == '+')) {
                    argText = argText[0] + '0' + argText.slice(1);
                  } else {
                    argText = (flagZeroPad ? '0' : ' ') + argText;
                  }
                }
              }
  
              // Adjust case.
              if (next < 97) argText = argText.toUpperCase();
  
              // Insert the result into the buffer.
              argText.split('').forEach(function(chr) {
                ret.push(chr.charCodeAt(0));
              });
              break;
            }
            case 's': {
              // String.
              var arg = getNextArg('i8*');
              var argLength = arg ? _strlen(arg) : '(null)'.length;
              if (precisionSet) argLength = Math.min(argLength, precision);
              if (!flagLeftAlign) {
                while (argLength < width--) {
                  ret.push(32);
                }
              }
              if (arg) {
                for (var i = 0; i < argLength; i++) {
                  ret.push(HEAPU8[((arg++)>>0)]);
                }
              } else {
                ret = ret.concat(intArrayFromString('(null)'.substr(0, argLength), true));
              }
              if (flagLeftAlign) {
                while (argLength < width--) {
                  ret.push(32);
                }
              }
              break;
            }
            case 'c': {
              // Character.
              if (flagLeftAlign) ret.push(getNextArg('i8'));
              while (--width > 0) {
                ret.push(32);
              }
              if (!flagLeftAlign) ret.push(getNextArg('i8'));
              break;
            }
            case 'n': {
              // Write the length written so far to the next parameter.
              var ptr = getNextArg('i32*');
              HEAP32[((ptr)>>2)] = ret.length;
              break;
            }
            case '%': {
              // Literal percent sign.
              ret.push(curr);
              break;
            }
            default: {
              // Unknown specifiers remain untouched.
              for (var i = startTextIndex; i < textIndex + 2; i++) {
                ret.push(HEAP8[((i)>>0)]);
              }
            }
          }
          textIndex += 2;
          // TODO: Support a/A (hex float) and m (last error) specifiers.
          // TODO: Support %1${specifier} for arg selection.
        } else {
          ret.push(curr);
          textIndex += 1;
        }
      }
      return ret;
    }
  
  function traverseStack(args) {
      if (!args || !args.callee || !args.callee.name) {
        return [null, '', ''];
      }
  
      var funstr = args.callee.toString();
      var funcname = args.callee.name;
      var str = '(';
      var first = true;
      for (var i in args) {
        var a = args[i];
        if (!first) {
          str += ", ";
        }
        first = false;
        if (typeof a === 'number' || typeof a === 'string') {
          str += a;
        } else {
          str += '(' + typeof a + ')';
        }
      }
      str += ')';
      var caller = args.callee.caller;
      args = caller ? caller.arguments : [];
      if (first)
        str = '';
      return [args, funcname, str];
    }
  /** @param {number=} flags */
  function _emscripten_get_callstack_js(flags) {
      var callstack = jsStackTrace();
  
      // Find the symbols in the callstack that corresponds to the functions that report callstack information, and remove everything up to these from the output.
      var iThisFunc = callstack.lastIndexOf('_emscripten_log');
      var iThisFunc2 = callstack.lastIndexOf('_emscripten_get_callstack');
      var iNextLine = callstack.indexOf('\n', Math.max(iThisFunc, iThisFunc2))+1;
      callstack = callstack.slice(iNextLine);
  
      if (flags & 32/*EM_LOG_DEMANGLE*/) {
        warnOnce('EM_LOG_DEMANGLE is deprecated; ignoring');
      }
  
      // If user requested to see the original source stack, but no source map information is available, just fall back to showing the JS stack.
      if (flags & 8/*EM_LOG_C_STACK*/ && typeof emscripten_source_map === 'undefined') {
        warnOnce('Source map information is not available, emscripten_log with EM_LOG_C_STACK will be ignored. Build with "--pre-js $EMSCRIPTEN/src/emscripten-source-map.min.js" linker flag to add source map loading to code.');
        flags ^= 8/*EM_LOG_C_STACK*/;
        flags |= 16/*EM_LOG_JS_STACK*/;
      }
  
      var stack_args = null;
      if (flags & 128 /*EM_LOG_FUNC_PARAMS*/) {
        // To get the actual parameters to the functions, traverse the stack via the unfortunately deprecated 'arguments.callee' method, if it works:
        stack_args = traverseStack(arguments);
        while (stack_args[1].includes('_emscripten_'))
          stack_args = traverseStack(stack_args[0]);
      }
  
      // Process all lines:
      var lines = callstack.split('\n');
      callstack = '';
      var newFirefoxRe = new RegExp('\\s*(.*?)@(.*?):([0-9]+):([0-9]+)'); // New FF30 with column info: extract components of form '       Object._main@http://server.com:4324:12'
      var firefoxRe = new RegExp('\\s*(.*?)@(.*):(.*)(:(.*))?'); // Old FF without column info: extract components of form '       Object._main@http://server.com:4324'
      var chromeRe = new RegExp('\\s*at (.*?) \\\((.*):(.*):(.*)\\\)'); // Extract components of form '    at Object._main (http://server.com/file.html:4324:12)'
  
      for (var l in lines) {
        var line = lines[l];
  
        var symbolName = '';
        var file = '';
        var lineno = 0;
        var column = 0;
  
        var parts = chromeRe.exec(line);
        if (parts && parts.length == 5) {
          symbolName = parts[1];
          file = parts[2];
          lineno = parts[3];
          column = parts[4];
        } else {
          parts = newFirefoxRe.exec(line);
          if (!parts) parts = firefoxRe.exec(line);
          if (parts && parts.length >= 4) {
            symbolName = parts[1];
            file = parts[2];
            lineno = parts[3];
            column = parts[4]|0; // Old Firefox doesn't carry column information, but in new FF30, it is present. See https://bugzilla.mozilla.org/show_bug.cgi?id=762556
          } else {
            // Was not able to extract this line for demangling/sourcemapping purposes. Output it as-is.
            callstack += line + '\n';
            continue;
          }
        }
  
        var haveSourceMap = false;
  
        if (flags & 8/*EM_LOG_C_STACK*/) {
          var orig = emscripten_source_map.originalPositionFor({line: lineno, column: column});
          haveSourceMap = (orig && orig.source);
          if (haveSourceMap) {
            if (flags & 64/*EM_LOG_NO_PATHS*/) {
              orig.source = orig.source.substring(orig.source.replace(/\\/g, "/").lastIndexOf('/')+1);
            }
            callstack += '    at ' + symbolName + ' (' + orig.source + ':' + orig.line + ':' + orig.column + ')\n';
          }
        }
        if ((flags & 16/*EM_LOG_JS_STACK*/) || !haveSourceMap) {
          if (flags & 64/*EM_LOG_NO_PATHS*/) {
            file = file.substring(file.replace(/\\/g, "/").lastIndexOf('/')+1);
          }
          callstack += (haveSourceMap ? ('     = ' + symbolName) : ('    at '+ symbolName)) + ' (' + file + ':' + lineno + ':' + column + ')\n';
        }
  
        // If we are still keeping track with the callstack by traversing via 'arguments.callee', print the function parameters as well.
        if (flags & 128 /*EM_LOG_FUNC_PARAMS*/ && stack_args[0]) {
          if (stack_args[1] == symbolName && stack_args[2].length > 0) {
            callstack = callstack.replace(/\s+$/, '');
            callstack += ' with values: ' + stack_args[1] + stack_args[2] + '\n';
          }
          stack_args = traverseStack(stack_args[0]);
        }
      }
      // Trim extra whitespace at the end of the output.
      callstack = callstack.replace(/\s+$/, '');
      return callstack;
    }
  function _emscripten_log_js(flags, str) {
      if (flags & 24/*EM_LOG_C_STACK | EM_LOG_JS_STACK*/) {
        str = str.replace(/\s+$/, ''); // Ensure the message and the callstack are joined cleanly with exactly one newline.
        str += (str.length > 0 ? '\n' : '') + _emscripten_get_callstack_js(flags);
      }
  
      if (flags & 1 /*EM_LOG_CONSOLE*/) {
        if (flags & 4 /*EM_LOG_ERROR*/) {
          console.error(str);
        } else if (flags & 2 /*EM_LOG_WARN*/) {
          console.warn(str);
        } else if (flags & 512 /*EM_LOG_INFO*/) {
          console.info(str);
        } else if (flags & 256 /*EM_LOG_DEBUG*/) {
          console.debug(str);
        } else {
          console.log(str);
        }
      } else if (flags & 6 /*EM_LOG_ERROR|EM_LOG_WARN*/) {
        err(str);
      } else {
        out(str);
      }
    }
  function _emscripten_log(flags, format, varargs) {
      var result = formatString(format, varargs);
      var str = UTF8ArrayToString(result, 0);
      _emscripten_log_js(flags, str);
    }

  function _emscripten_memcpy_big(dest, src, num) {
      HEAPU8.copyWithin(dest, src, src + num);
    }

  var JSEvents={inEventHandler:0,removeAllEventListeners:function() {
        for (var i = JSEvents.eventHandlers.length-1; i >= 0; --i) {
          JSEvents._removeHandler(i);
        }
        JSEvents.eventHandlers = [];
        JSEvents.deferredCalls = [];
      },registerRemoveEventListeners:function() {
        if (!JSEvents.removeEventListenersRegistered) {
          __ATEXIT__.push(JSEvents.removeAllEventListeners);
          JSEvents.removeEventListenersRegistered = true;
        }
      },deferredCalls:[],deferCall:function(targetFunction, precedence, argsList) {
        function arraysHaveEqualContent(arrA, arrB) {
          if (arrA.length != arrB.length) return false;
  
          for (var i in arrA) {
            if (arrA[i] != arrB[i]) return false;
          }
          return true;
        }
        // Test if the given call was already queued, and if so, don't add it again.
        for (var i in JSEvents.deferredCalls) {
          var call = JSEvents.deferredCalls[i];
          if (call.targetFunction == targetFunction && arraysHaveEqualContent(call.argsList, argsList)) {
            return;
          }
        }
        JSEvents.deferredCalls.push({
          targetFunction: targetFunction,
          precedence: precedence,
          argsList: argsList
        });
  
        JSEvents.deferredCalls.sort(function(x,y) { return x.precedence < y.precedence; });
      },removeDeferredCalls:function(targetFunction) {
        for (var i = 0; i < JSEvents.deferredCalls.length; ++i) {
          if (JSEvents.deferredCalls[i].targetFunction == targetFunction) {
            JSEvents.deferredCalls.splice(i, 1);
            --i;
          }
        }
      },canPerformEventHandlerRequests:function() {
        return JSEvents.inEventHandler && JSEvents.currentEventHandler.allowsDeferredCalls;
      },runDeferredCalls:function() {
        if (!JSEvents.canPerformEventHandlerRequests()) {
          return;
        }
        for (var i = 0; i < JSEvents.deferredCalls.length; ++i) {
          var call = JSEvents.deferredCalls[i];
          JSEvents.deferredCalls.splice(i, 1);
          --i;
          call.targetFunction.apply(null, call.argsList);
        }
      },eventHandlers:[],removeAllHandlersOnTarget:function(target, eventTypeString) {
        for (var i = 0; i < JSEvents.eventHandlers.length; ++i) {
          if (JSEvents.eventHandlers[i].target == target && 
            (!eventTypeString || eventTypeString == JSEvents.eventHandlers[i].eventTypeString)) {
             JSEvents._removeHandler(i--);
           }
        }
      },_removeHandler:function(i) {
        var h = JSEvents.eventHandlers[i];
        h.target.removeEventListener(h.eventTypeString, h.eventListenerFunc, h.useCapture);
        JSEvents.eventHandlers.splice(i, 1);
      },registerOrRemoveHandler:function(eventHandler) {
        var jsEventHandler = function jsEventHandler(event) {
          // Increment nesting count for the event handler.
          ++JSEvents.inEventHandler;
          JSEvents.currentEventHandler = eventHandler;
          // Process any old deferred calls the user has placed.
          JSEvents.runDeferredCalls();
          // Process the actual event, calls back to user C code handler.
          eventHandler.handlerFunc(event);
          // Process any new deferred calls that were placed right now from this event handler.
          JSEvents.runDeferredCalls();
          // Out of event handler - restore nesting count.
          --JSEvents.inEventHandler;
        };
        
        if (eventHandler.callbackfunc) {
          eventHandler.eventListenerFunc = jsEventHandler;
          eventHandler.target.addEventListener(eventHandler.eventTypeString, jsEventHandler, eventHandler.useCapture);
          JSEvents.eventHandlers.push(eventHandler);
          JSEvents.registerRemoveEventListeners();
        } else {
          for (var i = 0; i < JSEvents.eventHandlers.length; ++i) {
            if (JSEvents.eventHandlers[i].target == eventHandler.target
             && JSEvents.eventHandlers[i].eventTypeString == eventHandler.eventTypeString) {
               JSEvents._removeHandler(i--);
             }
          }
        }
      },getNodeNameForTarget:function(target) {
        if (!target) return '';
        if (target == window) return '#window';
        if (target == screen) return '#screen';
        return (target && target.nodeName) ? target.nodeName : '';
      },fullscreenEnabled:function() {
        return document.fullscreenEnabled
        // Safari 13.0.3 on macOS Catalina 10.15.1 still ships with prefixed webkitFullscreenEnabled.
        // TODO: If Safari at some point ships with unprefixed version, update the version check above.
        || document.webkitFullscreenEnabled
         ;
      }};
  
  function setLetterbox(element, topBottom, leftRight) {
        // Cannot use margin to specify letterboxes in FF or Chrome, since those ignore margins in fullscreen mode.
        element.style.paddingLeft = element.style.paddingRight = leftRight + 'px';
        element.style.paddingTop = element.style.paddingBottom = topBottom + 'px';
    }
  
  function maybeCStringToJsString(cString) {
      // "cString > 2" checks if the input is a number, and isn't of the special
      // values we accept here, EMSCRIPTEN_EVENT_TARGET_* (which map to 0, 1, 2).
      // In other words, if cString > 2 then it's a pointer to a valid place in
      // memory, and points to a C string.
      return cString > 2 ? UTF8ToString(cString) : cString;
    }
  
  var specialHTMLTargets=[0, typeof document !== 'undefined' ? document : 0, typeof window !== 'undefined' ? window : 0];
  function findEventTarget(target) {
      target = maybeCStringToJsString(target);
      var domElement = specialHTMLTargets[target] || (typeof document !== 'undefined' ? document.querySelector(target) : undefined);
      return domElement;
    }
  function findCanvasEventTarget(target) { return findEventTarget(target); }
  function _emscripten_set_canvas_element_size(target, width, height) {
      var canvas = findCanvasEventTarget(target);
      if (!canvas) return -4;
      canvas.width = width;
      canvas.height = height;
      return 0;
    }
  
  function _emscripten_get_canvas_element_size(target, width, height) {
      var canvas = findCanvasEventTarget(target);
      if (!canvas) return -4;
      HEAP32[((width)>>2)] = canvas.width;
      HEAP32[((height)>>2)] = canvas.height;
    }
  
  function getCanvasElementSize(target) {
      var stackTop = stackSave();
      var w = stackAlloc(8);
      var h = w + 4;
  
      var targetInt = stackAlloc(target.id.length+1);
      stringToUTF8(target.id, targetInt, target.id.length+1);
      var ret = _emscripten_get_canvas_element_size(targetInt, w, h);
      var size = [HEAP32[((w)>>2)], HEAP32[((h)>>2)]];
      stackRestore(stackTop);
      return size;
    }
  
  function setCanvasElementSize(target, width, height) {
      if (!target.controlTransferredOffscreen) {
        target.width = width;
        target.height = height;
      } else {
        // This function is being called from high-level JavaScript code instead of asm.js/Wasm,
        // and it needs to synchronously proxy over to another thread, so marshal the string onto the heap to do the call.
        var stackTop = stackSave();
        var targetInt = stackAlloc(target.id.length+1);
        stringToUTF8(target.id, targetInt, target.id.length+1);
        _emscripten_set_canvas_element_size(targetInt, width, height);
        stackRestore(stackTop);
      }
    }
  
  function registerRestoreOldStyle(canvas) {
      var canvasSize = getCanvasElementSize(canvas);
      var oldWidth = canvasSize[0];
      var oldHeight = canvasSize[1];
      var oldCssWidth = canvas.style.width;
      var oldCssHeight = canvas.style.height;
      var oldBackgroundColor = canvas.style.backgroundColor; // Chrome reads color from here.
      var oldDocumentBackgroundColor = document.body.style.backgroundColor; // IE11 reads color from here.
      // Firefox always has black background color.
      var oldPaddingLeft = canvas.style.paddingLeft; // Chrome, FF, Safari
      var oldPaddingRight = canvas.style.paddingRight;
      var oldPaddingTop = canvas.style.paddingTop;
      var oldPaddingBottom = canvas.style.paddingBottom;
      var oldMarginLeft = canvas.style.marginLeft; // IE11
      var oldMarginRight = canvas.style.marginRight;
      var oldMarginTop = canvas.style.marginTop;
      var oldMarginBottom = canvas.style.marginBottom;
      var oldDocumentBodyMargin = document.body.style.margin;
      var oldDocumentOverflow = document.documentElement.style.overflow; // Chrome, Firefox
      var oldDocumentScroll = document.body.scroll; // IE
      var oldImageRendering = canvas.style.imageRendering;
  
      function restoreOldStyle() {
        var fullscreenElement = document.fullscreenElement
          || document.webkitFullscreenElement
          || document.msFullscreenElement
          ;
        if (!fullscreenElement) {
          document.removeEventListener('fullscreenchange', restoreOldStyle);
  
          // Unprefixed Fullscreen API shipped in Chromium 71 (https://bugs.chromium.org/p/chromium/issues/detail?id=383813)
          // As of Safari 13.0.3 on macOS Catalina 10.15.1 still ships with prefixed webkitfullscreenchange. TODO: revisit this check once Safari ships unprefixed version.
          document.removeEventListener('webkitfullscreenchange', restoreOldStyle);
  
          setCanvasElementSize(canvas, oldWidth, oldHeight);
  
          canvas.style.width = oldCssWidth;
          canvas.style.height = oldCssHeight;
          canvas.style.backgroundColor = oldBackgroundColor; // Chrome
          // IE11 hack: assigning 'undefined' or an empty string to document.body.style.backgroundColor has no effect, so first assign back the default color
          // before setting the undefined value. Setting undefined value is also important, or otherwise we would later treat that as something that the user
          // had explicitly set so subsequent fullscreen transitions would not set background color properly.
          if (!oldDocumentBackgroundColor) document.body.style.backgroundColor = 'white';
          document.body.style.backgroundColor = oldDocumentBackgroundColor; // IE11
          canvas.style.paddingLeft = oldPaddingLeft; // Chrome, FF, Safari
          canvas.style.paddingRight = oldPaddingRight;
          canvas.style.paddingTop = oldPaddingTop;
          canvas.style.paddingBottom = oldPaddingBottom;
          canvas.style.marginLeft = oldMarginLeft; // IE11
          canvas.style.marginRight = oldMarginRight;
          canvas.style.marginTop = oldMarginTop;
          canvas.style.marginBottom = oldMarginBottom;
          document.body.style.margin = oldDocumentBodyMargin;
          document.documentElement.style.overflow = oldDocumentOverflow; // Chrome, Firefox
          document.body.scroll = oldDocumentScroll; // IE
          canvas.style.imageRendering = oldImageRendering;
          if (canvas.GLctxObject) canvas.GLctxObject.GLctx.viewport(0, 0, oldWidth, oldHeight);
  
          if (currentFullscreenStrategy.canvasResizedCallback) {
            wasmTable.get(currentFullscreenStrategy.canvasResizedCallback)(37, 0, currentFullscreenStrategy.canvasResizedCallbackUserData);
          }
        }
      }
      document.addEventListener('fullscreenchange', restoreOldStyle);
      // Unprefixed Fullscreen API shipped in Chromium 71 (https://bugs.chromium.org/p/chromium/issues/detail?id=383813)
      // As of Safari 13.0.3 on macOS Catalina 10.15.1 still ships with prefixed webkitfullscreenchange. TODO: revisit this check once Safari ships unprefixed version.
      document.addEventListener('webkitfullscreenchange', restoreOldStyle);
      return restoreOldStyle;
    }
  
  function getBoundingClientRect(e) {
      return specialHTMLTargets.indexOf(e) < 0 ? e.getBoundingClientRect() : {'left':0,'top':0};
    }
  function _JSEvents_resizeCanvasForFullscreen(target, strategy) {
      var restoreOldStyle = registerRestoreOldStyle(target);
      var cssWidth = strategy.softFullscreen ? innerWidth : screen.width;
      var cssHeight = strategy.softFullscreen ? innerHeight : screen.height;
      var rect = getBoundingClientRect(target);
      var windowedCssWidth = rect.width;
      var windowedCssHeight = rect.height;
      var canvasSize = getCanvasElementSize(target);
      var windowedRttWidth = canvasSize[0];
      var windowedRttHeight = canvasSize[1];
  
      if (strategy.scaleMode == 3) {
        setLetterbox(target, (cssHeight - windowedCssHeight) / 2, (cssWidth - windowedCssWidth) / 2);
        cssWidth = windowedCssWidth;
        cssHeight = windowedCssHeight;
      } else if (strategy.scaleMode == 2) {
        if (cssWidth*windowedRttHeight < windowedRttWidth*cssHeight) {
          var desiredCssHeight = windowedRttHeight * cssWidth / windowedRttWidth;
          setLetterbox(target, (cssHeight - desiredCssHeight) / 2, 0);
          cssHeight = desiredCssHeight;
        } else {
          var desiredCssWidth = windowedRttWidth * cssHeight / windowedRttHeight;
          setLetterbox(target, 0, (cssWidth - desiredCssWidth) / 2);
          cssWidth = desiredCssWidth;
        }
      }
  
      // If we are adding padding, must choose a background color or otherwise Chrome will give the
      // padding a default white color. Do it only if user has not customized their own background color.
      if (!target.style.backgroundColor) target.style.backgroundColor = 'black';
      // IE11 does the same, but requires the color to be set in the document body.
      if (!document.body.style.backgroundColor) document.body.style.backgroundColor = 'black'; // IE11
      // Firefox always shows black letterboxes independent of style color.
  
      target.style.width = cssWidth + 'px';
      target.style.height = cssHeight + 'px';
  
      if (strategy.filteringMode == 1) {
        target.style.imageRendering = 'optimizeSpeed';
        target.style.imageRendering = '-moz-crisp-edges';
        target.style.imageRendering = '-o-crisp-edges';
        target.style.imageRendering = '-webkit-optimize-contrast';
        target.style.imageRendering = 'optimize-contrast';
        target.style.imageRendering = 'crisp-edges';
        target.style.imageRendering = 'pixelated';
      }
  
      var dpiScale = (strategy.canvasResolutionScaleMode == 2) ? devicePixelRatio : 1;
      if (strategy.canvasResolutionScaleMode != 0) {
        var newWidth = (cssWidth * dpiScale)|0;
        var newHeight = (cssHeight * dpiScale)|0;
        setCanvasElementSize(target, newWidth, newHeight);
        if (target.GLctxObject) target.GLctxObject.GLctx.viewport(0, 0, newWidth, newHeight);
      }
      return restoreOldStyle;
    }
  function _JSEvents_requestFullscreen(target, strategy) {
      // EMSCRIPTEN_FULLSCREEN_SCALE_DEFAULT + EMSCRIPTEN_FULLSCREEN_CANVAS_SCALE_NONE is a mode where no extra logic is performed to the DOM elements.
      if (strategy.scaleMode != 0 || strategy.canvasResolutionScaleMode != 0) {
        _JSEvents_resizeCanvasForFullscreen(target, strategy);
      }
  
      if (target.requestFullscreen) {
        target.requestFullscreen();
      } else if (target.webkitRequestFullscreen) {
        target.webkitRequestFullscreen(Element.ALLOW_KEYBOARD_INPUT);
      } else {
        return JSEvents.fullscreenEnabled() ? -3 : -1;
      }
  
      currentFullscreenStrategy = strategy;
  
      if (strategy.canvasResizedCallback) {
        wasmTable.get(strategy.canvasResizedCallback)(37, 0, strategy.canvasResizedCallbackUserData);
      }
  
      return 0;
    }
  function doRequestFullscreen(target, strategy) {
      if (!JSEvents.fullscreenEnabled()) return -1;
      target = findEventTarget(target);
      if (!target) return -4;
  
      if (!target.requestFullscreen
        && !target.webkitRequestFullscreen
        ) {
        return -3;
      }
  
      var canPerformRequests = JSEvents.canPerformEventHandlerRequests();
  
      // Queue this function call if we're not currently in an event handler and the user saw it appropriate to do so.
      if (!canPerformRequests) {
        if (strategy.deferUntilInEventHandler) {
          JSEvents.deferCall(_JSEvents_requestFullscreen, 1 /* priority over pointer lock */, [target, strategy]);
          return 1;
        } else {
          return -2;
        }
      }
  
      return _JSEvents_requestFullscreen(target, strategy);
    }
  
  var currentFullscreenStrategy={};
  function _emscripten_request_fullscreen_strategy(target, deferUntilInEventHandler, fullscreenStrategy) {
      var strategy = {
        scaleMode: HEAP32[((fullscreenStrategy)>>2)],
        canvasResolutionScaleMode: HEAP32[(((fullscreenStrategy)+(4))>>2)],
        filteringMode: HEAP32[(((fullscreenStrategy)+(8))>>2)],
        deferUntilInEventHandler: deferUntilInEventHandler,
        canvasResizedCallback: HEAP32[(((fullscreenStrategy)+(12))>>2)],
        canvasResizedCallbackUserData: HEAP32[(((fullscreenStrategy)+(16))>>2)]
      };
  
      return doRequestFullscreen(target, strategy);
    }

  function emscripten_realloc_buffer(size) {
      try {
        // round size grow request up to wasm page size (fixed 64KB per spec)
        wasmMemory.grow((size - buffer.byteLength + 65535) >>> 16); // .grow() takes a delta compared to the previous size
        updateGlobalBufferAndViews(wasmMemory.buffer);
        return 1 /*success*/;
      } catch(e) {
        console.error('emscripten_realloc_buffer: Attempted to grow heap from ' + buffer.byteLength  + ' bytes to ' + size + ' bytes, but got error: ' + e);
      }
      // implicit 0 return to save code size (caller will cast "undefined" into 0
      // anyhow)
    }
  function _emscripten_resize_heap(requestedSize) {
      var oldSize = HEAPU8.length;
      requestedSize = requestedSize >>> 0;
      // With pthreads, races can happen (another thread might increase the size in between), so return a failure, and let the caller retry.
      assert(requestedSize > oldSize);
  
      // Memory resize rules:
      // 1. Always increase heap size to at least the requested size, rounded up to next page multiple.
      // 2a. If MEMORY_GROWTH_LINEAR_STEP == -1, excessively resize the heap geometrically: increase the heap size according to 
      //                                         MEMORY_GROWTH_GEOMETRIC_STEP factor (default +20%),
      //                                         At most overreserve by MEMORY_GROWTH_GEOMETRIC_CAP bytes (default 96MB).
      // 2b. If MEMORY_GROWTH_LINEAR_STEP != -1, excessively resize the heap linearly: increase the heap size by at least MEMORY_GROWTH_LINEAR_STEP bytes.
      // 3. Max size for the heap is capped at 2048MB-WASM_PAGE_SIZE, or by MAXIMUM_MEMORY, or by ASAN limit, depending on which is smallest
      // 4. If we were unable to allocate as much memory, it may be due to over-eager decision to excessively reserve due to (3) above.
      //    Hence if an allocation fails, cut down on the amount of excess growth, in an attempt to succeed to perform a smaller allocation.
  
      // A limit was set for how much we can grow. We should not exceed that
      // (the wasm binary specifies it, so if we tried, we'd fail anyhow).
      // In CAN_ADDRESS_2GB mode, stay one Wasm page short of 4GB: while e.g. Chrome is able to allocate full 4GB Wasm memories, the size will wrap
      // back to 0 bytes in Wasm side for any code that deals with heap sizes, which would require special casing all heap size related code to treat
      // 0 specially.
      var maxHeapSize = 2147483648;
      if (requestedSize > maxHeapSize) {
        err('Cannot enlarge memory, asked to go up to ' + requestedSize + ' bytes, but the limit is ' + maxHeapSize + ' bytes!');
        return false;
      }
  
      // Loop through potential heap size increases. If we attempt a too eager reservation that fails, cut down on the
      // attempted size and reserve a smaller bump instead. (max 3 times, chosen somewhat arbitrarily)
      for (var cutDown = 1; cutDown <= 4; cutDown *= 2) {
        var overGrownHeapSize = oldSize * (1 + 0.2 / cutDown); // ensure geometric growth
        // but limit overreserving (default to capping at +96MB overgrowth at most)
        overGrownHeapSize = Math.min(overGrownHeapSize, requestedSize + 100663296 );
  
        var newSize = Math.min(maxHeapSize, alignUp(Math.max(requestedSize, overGrownHeapSize), 65536));
  
        var replacement = emscripten_realloc_buffer(newSize);
        if (replacement) {
  
          return true;
        }
      }
      err('Failed to grow the heap from ' + oldSize + ' bytes to ' + newSize + ' bytes, not enough memory!');
      return false;
    }

  function registerFocusEventCallback(target, userData, useCapture, callbackfunc, eventTypeId, eventTypeString, targetThread) {
      if (!JSEvents.focusEvent) JSEvents.focusEvent = _malloc( 256 );
  
      var focusEventHandlerFunc = function(ev) {
        var e = ev || event;
  
        var nodeName = JSEvents.getNodeNameForTarget(e.target);
        var id = e.target.id ? e.target.id : '';
  
        var focusEvent = JSEvents.focusEvent;
        stringToUTF8(nodeName, focusEvent + 0, 128);
        stringToUTF8(id, focusEvent + 128, 128);
  
        if (wasmTable.get(callbackfunc)(eventTypeId, focusEvent, userData)) e.preventDefault();
      };
  
      var eventHandler = {
        target: findEventTarget(target),
        eventTypeString: eventTypeString,
        callbackfunc: callbackfunc,
        handlerFunc: focusEventHandlerFunc,
        useCapture: useCapture
      };
      JSEvents.registerOrRemoveHandler(eventHandler);
    }
  function _emscripten_set_focus_callback_on_thread(target, userData, useCapture, callbackfunc, targetThread) {
      registerFocusEventCallback(target, userData, useCapture, callbackfunc, 13, "focus", targetThread);
      return 0;
    }

  function _emscripten_set_focusin_callback_on_thread(target, userData, useCapture, callbackfunc, targetThread) {
      registerFocusEventCallback(target, userData, useCapture, callbackfunc, 14, "focusin", targetThread);
      return 0;
    }

  function _emscripten_set_focusout_callback_on_thread(target, userData, useCapture, callbackfunc, targetThread) {
      registerFocusEventCallback(target, userData, useCapture, callbackfunc, 15, "focusout", targetThread);
      return 0;
    }

  function registerKeyEventCallback(target, userData, useCapture, callbackfunc, eventTypeId, eventTypeString, targetThread) {
      if (!JSEvents.keyEvent) JSEvents.keyEvent = _malloc( 164 );
  
      var keyEventHandlerFunc = function(e) {
        assert(e);
  
        var keyEventData = JSEvents.keyEvent;
        var idx = keyEventData >> 2;
  
        HEAP32[idx + 0] = e.location;
        HEAP32[idx + 1] = e.ctrlKey;
        HEAP32[idx + 2] = e.shiftKey;
        HEAP32[idx + 3] = e.altKey;
        HEAP32[idx + 4] = e.metaKey;
        HEAP32[idx + 5] = e.repeat;
        HEAP32[idx + 6] = e.charCode;
        HEAP32[idx + 7] = e.keyCode;
        HEAP32[idx + 8] = e.which;
        stringToUTF8(e.key || '', keyEventData + 36, 32);
        stringToUTF8(e.code || '', keyEventData + 68, 32);
        stringToUTF8(e.char || '', keyEventData + 100, 32);
        stringToUTF8(e.locale || '', keyEventData + 132, 32);
  
        if (wasmTable.get(callbackfunc)(eventTypeId, keyEventData, userData)) e.preventDefault();
      };
  
      var eventHandler = {
        target: findEventTarget(target),
        allowsDeferredCalls: true,
        eventTypeString: eventTypeString,
        callbackfunc: callbackfunc,
        handlerFunc: keyEventHandlerFunc,
        useCapture: useCapture
      };
      JSEvents.registerOrRemoveHandler(eventHandler);
    }
  function _emscripten_set_keydown_callback_on_thread(target, userData, useCapture, callbackfunc, targetThread) {
      registerKeyEventCallback(target, userData, useCapture, callbackfunc, 2, "keydown", targetThread);
      return 0;
    }

  function _emscripten_set_keypress_callback_on_thread(target, userData, useCapture, callbackfunc, targetThread) {
      registerKeyEventCallback(target, userData, useCapture, callbackfunc, 1, "keypress", targetThread);
      return 0;
    }

  function _emscripten_set_keyup_callback_on_thread(target, userData, useCapture, callbackfunc, targetThread) {
      registerKeyEventCallback(target, userData, useCapture, callbackfunc, 3, "keyup", targetThread);
      return 0;
    }

  function callUserCallback(func, synchronous) {
      if (ABORT) {
        err('user callback triggered after application aborted.  Ignoring.');
        return;
      }
      // For synchronous calls, let any exceptions propagate, and don't let the runtime exit.
      if (synchronous) {
        func();
        return;
      }
      try {
        func();
      } catch (e) {
        if (e instanceof ExitStatus) {
          return;
        } else if (e !== 'unwind') {
          // And actual unexpected user-exectpion occured
          if (e && typeof e === 'object' && e.stack) err('exception thrown: ' + [e, e.stack]);
          throw e;
        }
      }
    }
  
  function runtimeKeepalivePush() {
      runtimeKeepaliveCounter += 1;
    }
  
  function runtimeKeepalivePop() {
      assert(runtimeKeepaliveCounter > 0);
      runtimeKeepaliveCounter -= 1;
    }
  var Browser={mainLoop:{running:false,scheduler:null,method:"",currentlyRunningMainloop:0,func:null,arg:0,timingMode:0,timingValue:0,currentFrameNumber:0,queue:[],pause:function() {
          Browser.mainLoop.scheduler = null;
          // Incrementing this signals the previous main loop that it's now become old, and it must return.
          Browser.mainLoop.currentlyRunningMainloop++;
        },resume:function() {
          Browser.mainLoop.currentlyRunningMainloop++;
          var timingMode = Browser.mainLoop.timingMode;
          var timingValue = Browser.mainLoop.timingValue;
          var func = Browser.mainLoop.func;
          Browser.mainLoop.func = null;
          // do not set timing and call scheduler, we will do it on the next lines
          setMainLoop(func, 0, false, Browser.mainLoop.arg, true);
          _emscripten_set_main_loop_timing(timingMode, timingValue);
          Browser.mainLoop.scheduler();
        },updateStatus:function() {
          if (Module['setStatus']) {
            var message = Module['statusMessage'] || 'Please wait...';
            var remaining = Browser.mainLoop.remainingBlockers;
            var expected = Browser.mainLoop.expectedBlockers;
            if (remaining) {
              if (remaining < expected) {
                Module['setStatus'](message + ' (' + (expected - remaining) + '/' + expected + ')');
              } else {
                Module['setStatus'](message);
              }
            } else {
              Module['setStatus']('');
            }
          }
        },runIter:function(func) {
          if (ABORT) return;
          if (Module['preMainLoop']) {
            var preRet = Module['preMainLoop']();
            if (preRet === false) {
              return; // |return false| skips a frame
            }
          }
          callUserCallback(func);
          if (Module['postMainLoop']) Module['postMainLoop']();
        }},isFullscreen:false,pointerLock:false,moduleContextCreatedCallbacks:[],workers:[],init:function() {
        if (!Module["preloadPlugins"]) Module["preloadPlugins"] = []; // needs to exist even in workers
  
        if (Browser.initted) return;
        Browser.initted = true;
  
        try {
          new Blob();
          Browser.hasBlobConstructor = true;
        } catch(e) {
          Browser.hasBlobConstructor = false;
          console.log("warning: no blob constructor, cannot create blobs with mimetypes");
        }
        Browser.BlobBuilder = typeof MozBlobBuilder != "undefined" ? MozBlobBuilder : (typeof WebKitBlobBuilder != "undefined" ? WebKitBlobBuilder : (!Browser.hasBlobConstructor ? console.log("warning: no BlobBuilder") : null));
        Browser.URLObject = typeof window != "undefined" ? (window.URL ? window.URL : window.webkitURL) : undefined;
        if (!Module.noImageDecoding && typeof Browser.URLObject === 'undefined') {
          console.log("warning: Browser does not support creating object URLs. Built-in browser image decoding will not be available.");
          Module.noImageDecoding = true;
        }
  
        // Support for plugins that can process preloaded files. You can add more of these to
        // your app by creating and appending to Module.preloadPlugins.
        //
        // Each plugin is asked if it can handle a file based on the file's name. If it can,
        // it is given the file's raw data. When it is done, it calls a callback with the file's
        // (possibly modified) data. For example, a plugin might decompress a file, or it
        // might create some side data structure for use later (like an Image element, etc.).
  
        var imagePlugin = {};
        imagePlugin['canHandle'] = function imagePlugin_canHandle(name) {
          return !Module.noImageDecoding && /\.(jpg|jpeg|png|bmp)$/i.test(name);
        };
        imagePlugin['handle'] = function imagePlugin_handle(byteArray, name, onload, onerror) {
          var b = null;
          if (Browser.hasBlobConstructor) {
            try {
              b = new Blob([byteArray], { type: Browser.getMimetype(name) });
              if (b.size !== byteArray.length) { // Safari bug #118630
                // Safari's Blob can only take an ArrayBuffer
                b = new Blob([(new Uint8Array(byteArray)).buffer], { type: Browser.getMimetype(name) });
              }
            } catch(e) {
              warnOnce('Blob constructor present but fails: ' + e + '; falling back to blob builder');
            }
          }
          if (!b) {
            var bb = new Browser.BlobBuilder();
            bb.append((new Uint8Array(byteArray)).buffer); // we need to pass a buffer, and must copy the array to get the right data range
            b = bb.getBlob();
          }
          var url = Browser.URLObject.createObjectURL(b);
          assert(typeof url == 'string', 'createObjectURL must return a url as a string');
          var img = new Image();
          img.onload = function img_onload() {
            assert(img.complete, 'Image ' + name + ' could not be decoded');
            var canvas = document.createElement('canvas');
            canvas.width = img.width;
            canvas.height = img.height;
            var ctx = canvas.getContext('2d');
            ctx.drawImage(img, 0, 0);
            Module["preloadedImages"][name] = canvas;
            Browser.URLObject.revokeObjectURL(url);
            if (onload) onload(byteArray);
          };
          img.onerror = function img_onerror(event) {
            console.log('Image ' + url + ' could not be decoded');
            if (onerror) onerror();
          };
          img.src = url;
        };
        Module['preloadPlugins'].push(imagePlugin);
  
        var audioPlugin = {};
        audioPlugin['canHandle'] = function audioPlugin_canHandle(name) {
          return !Module.noAudioDecoding && name.substr(-4) in { '.ogg': 1, '.wav': 1, '.mp3': 1 };
        };
        audioPlugin['handle'] = function audioPlugin_handle(byteArray, name, onload, onerror) {
          var done = false;
          function finish(audio) {
            if (done) return;
            done = true;
            Module["preloadedAudios"][name] = audio;
            if (onload) onload(byteArray);
          }
          function fail() {
            if (done) return;
            done = true;
            Module["preloadedAudios"][name] = new Audio(); // empty shim
            if (onerror) onerror();
          }
          if (Browser.hasBlobConstructor) {
            try {
              var b = new Blob([byteArray], { type: Browser.getMimetype(name) });
            } catch(e) {
              return fail();
            }
            var url = Browser.URLObject.createObjectURL(b); // XXX we never revoke this!
            assert(typeof url == 'string', 'createObjectURL must return a url as a string');
            var audio = new Audio();
            audio.addEventListener('canplaythrough', function() { finish(audio) }, false); // use addEventListener due to chromium bug 124926
            audio.onerror = function audio_onerror(event) {
              if (done) return;
              console.log('warning: browser could not fully decode audio ' + name + ', trying slower base64 approach');
              function encode64(data) {
                var BASE = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/';
                var PAD = '=';
                var ret = '';
                var leftchar = 0;
                var leftbits = 0;
                for (var i = 0; i < data.length; i++) {
                  leftchar = (leftchar << 8) | data[i];
                  leftbits += 8;
                  while (leftbits >= 6) {
                    var curr = (leftchar >> (leftbits-6)) & 0x3f;
                    leftbits -= 6;
                    ret += BASE[curr];
                  }
                }
                if (leftbits == 2) {
                  ret += BASE[(leftchar&3) << 4];
                  ret += PAD + PAD;
                } else if (leftbits == 4) {
                  ret += BASE[(leftchar&0xf) << 2];
                  ret += PAD;
                }
                return ret;
              }
              audio.src = 'data:audio/x-' + name.substr(-3) + ';base64,' + encode64(byteArray);
              finish(audio); // we don't wait for confirmation this worked - but it's worth trying
            };
            audio.src = url;
            // workaround for chrome bug 124926 - we do not always get oncanplaythrough or onerror
            Browser.safeSetTimeout(function() {
              finish(audio); // try to use it even though it is not necessarily ready to play
            }, 10000);
          } else {
            return fail();
          }
        };
        Module['preloadPlugins'].push(audioPlugin);
  
        // Canvas event setup
  
        function pointerLockChange() {
          Browser.pointerLock = document['pointerLockElement'] === Module['canvas'] ||
                                document['mozPointerLockElement'] === Module['canvas'] ||
                                document['webkitPointerLockElement'] === Module['canvas'] ||
                                document['msPointerLockElement'] === Module['canvas'];
        }
        var canvas = Module['canvas'];
        if (canvas) {
          // forced aspect ratio can be enabled by defining 'forcedAspectRatio' on Module
          // Module['forcedAspectRatio'] = 4 / 3;
  
          canvas.requestPointerLock = canvas['requestPointerLock'] ||
                                      canvas['mozRequestPointerLock'] ||
                                      canvas['webkitRequestPointerLock'] ||
                                      canvas['msRequestPointerLock'] ||
                                      function(){};
          canvas.exitPointerLock = document['exitPointerLock'] ||
                                   document['mozExitPointerLock'] ||
                                   document['webkitExitPointerLock'] ||
                                   document['msExitPointerLock'] ||
                                   function(){}; // no-op if function does not exist
          canvas.exitPointerLock = canvas.exitPointerLock.bind(document);
  
          document.addEventListener('pointerlockchange', pointerLockChange, false);
          document.addEventListener('mozpointerlockchange', pointerLockChange, false);
          document.addEventListener('webkitpointerlockchange', pointerLockChange, false);
          document.addEventListener('mspointerlockchange', pointerLockChange, false);
  
          if (Module['elementPointerLock']) {
            canvas.addEventListener("click", function(ev) {
              if (!Browser.pointerLock && Module['canvas'].requestPointerLock) {
                Module['canvas'].requestPointerLock();
                ev.preventDefault();
              }
            }, false);
          }
        }
      },createContext:function(canvas, useWebGL, setInModule, webGLContextAttributes) {
        if (useWebGL && Module.ctx && canvas == Module.canvas) return Module.ctx; // no need to recreate GL context if it's already been created for this canvas.
  
        var ctx;
        var contextHandle;
        if (useWebGL) {
          // For GLES2/desktop GL compatibility, adjust a few defaults to be different to WebGL defaults, so that they align better with the desktop defaults.
          var contextAttributes = {
            antialias: false,
            alpha: false,
            majorVersion: (typeof WebGL2RenderingContext !== 'undefined') ? 2 : 1,
          };
  
          if (webGLContextAttributes) {
            for (var attribute in webGLContextAttributes) {
              contextAttributes[attribute] = webGLContextAttributes[attribute];
            }
          }
  
          // This check of existence of GL is here to satisfy Closure compiler, which yells if variable GL is referenced below but GL object is not
          // actually compiled in because application is not doing any GL operations. TODO: Ideally if GL is not being used, this function
          // Browser.createContext() should not even be emitted.
          if (typeof GL !== 'undefined') {
            contextHandle = GL.createContext(canvas, contextAttributes);
            if (contextHandle) {
              ctx = GL.getContext(contextHandle).GLctx;
            }
          }
        } else {
          ctx = canvas.getContext('2d');
        }
  
        if (!ctx) return null;
  
        if (setInModule) {
          if (!useWebGL) assert(typeof GLctx === 'undefined', 'cannot set in module if GLctx is used, but we are a non-GL context that would replace it');
  
          Module.ctx = ctx;
          if (useWebGL) GL.makeContextCurrent(contextHandle);
          Module.useWebGL = useWebGL;
          Browser.moduleContextCreatedCallbacks.forEach(function(callback) { callback() });
          Browser.init();
        }
        return ctx;
      },destroyContext:function(canvas, useWebGL, setInModule) {},fullscreenHandlersInstalled:false,lockPointer:undefined,resizeCanvas:undefined,requestFullscreen:function(lockPointer, resizeCanvas) {
        Browser.lockPointer = lockPointer;
        Browser.resizeCanvas = resizeCanvas;
        if (typeof Browser.lockPointer === 'undefined') Browser.lockPointer = true;
        if (typeof Browser.resizeCanvas === 'undefined') Browser.resizeCanvas = false;
  
        var canvas = Module['canvas'];
        function fullscreenChange() {
          Browser.isFullscreen = false;
          var canvasContainer = canvas.parentNode;
          if ((document['fullscreenElement'] || document['mozFullScreenElement'] ||
               document['msFullscreenElement'] || document['webkitFullscreenElement'] ||
               document['webkitCurrentFullScreenElement']) === canvasContainer) {
            canvas.exitFullscreen = Browser.exitFullscreen;
            if (Browser.lockPointer) canvas.requestPointerLock();
            Browser.isFullscreen = true;
            if (Browser.resizeCanvas) {
              Browser.setFullscreenCanvasSize();
            } else {
              Browser.updateCanvasDimensions(canvas);
            }
          } else {
            // remove the full screen specific parent of the canvas again to restore the HTML structure from before going full screen
            canvasContainer.parentNode.insertBefore(canvas, canvasContainer);
            canvasContainer.parentNode.removeChild(canvasContainer);
  
            if (Browser.resizeCanvas) {
              Browser.setWindowedCanvasSize();
            } else {
              Browser.updateCanvasDimensions(canvas);
            }
          }
          if (Module['onFullScreen']) Module['onFullScreen'](Browser.isFullscreen);
          if (Module['onFullscreen']) Module['onFullscreen'](Browser.isFullscreen);
        }
  
        if (!Browser.fullscreenHandlersInstalled) {
          Browser.fullscreenHandlersInstalled = true;
          document.addEventListener('fullscreenchange', fullscreenChange, false);
          document.addEventListener('mozfullscreenchange', fullscreenChange, false);
          document.addEventListener('webkitfullscreenchange', fullscreenChange, false);
          document.addEventListener('MSFullscreenChange', fullscreenChange, false);
        }
  
        // create a new parent to ensure the canvas has no siblings. this allows browsers to optimize full screen performance when its parent is the full screen root
        var canvasContainer = document.createElement("div");
        canvas.parentNode.insertBefore(canvasContainer, canvas);
        canvasContainer.appendChild(canvas);
  
        // use parent of canvas as full screen root to allow aspect ratio correction (Firefox stretches the root to screen size)
        canvasContainer.requestFullscreen = canvasContainer['requestFullscreen'] ||
                                            canvasContainer['mozRequestFullScreen'] ||
                                            canvasContainer['msRequestFullscreen'] ||
                                           (canvasContainer['webkitRequestFullscreen'] ? function() { canvasContainer['webkitRequestFullscreen'](Element['ALLOW_KEYBOARD_INPUT']) } : null) ||
                                           (canvasContainer['webkitRequestFullScreen'] ? function() { canvasContainer['webkitRequestFullScreen'](Element['ALLOW_KEYBOARD_INPUT']) } : null);
  
        canvasContainer.requestFullscreen();
      },requestFullScreen:function() {
        abort('Module.requestFullScreen has been replaced by Module.requestFullscreen (without a capital S)');
      },exitFullscreen:function() {
        // This is workaround for chrome. Trying to exit from fullscreen
        // not in fullscreen state will cause "TypeError: Document not active"
        // in chrome. See https://github.com/emscripten-core/emscripten/pull/8236
        if (!Browser.isFullscreen) {
          return false;
        }
  
        var CFS = document['exitFullscreen'] ||
                  document['cancelFullScreen'] ||
                  document['mozCancelFullScreen'] ||
                  document['msExitFullscreen'] ||
                  document['webkitCancelFullScreen'] ||
            (function() {});
        CFS.apply(document, []);
        return true;
      },nextRAF:0,fakeRequestAnimationFrame:function(func) {
        // try to keep 60fps between calls to here
        var now = Date.now();
        if (Browser.nextRAF === 0) {
          Browser.nextRAF = now + 1000/60;
        } else {
          while (now + 2 >= Browser.nextRAF) { // fudge a little, to avoid timer jitter causing us to do lots of delay:0
            Browser.nextRAF += 1000/60;
          }
        }
        var delay = Math.max(Browser.nextRAF - now, 0);
        setTimeout(func, delay);
      },requestAnimationFrame:function(func) {
        if (typeof requestAnimationFrame === 'function') {
          requestAnimationFrame(func);
          return;
        }
        var RAF = Browser.fakeRequestAnimationFrame;
        RAF(func);
      },safeRequestAnimationFrame:function(func) {
        
        return Browser.requestAnimationFrame(function() {
          
          callUserCallback(func);
        });
      },safeSetTimeout:function(func, timeout) {
        
        return setTimeout(function() {
          
          callUserCallback(func);
        }, timeout);
      },getMimetype:function(name) {
        return {
          'jpg': 'image/jpeg',
          'jpeg': 'image/jpeg',
          'png': 'image/png',
          'bmp': 'image/bmp',
          'ogg': 'audio/ogg',
          'wav': 'audio/wav',
          'mp3': 'audio/mpeg'
        }[name.substr(name.lastIndexOf('.')+1)];
      },getUserMedia:function(func) {
        if (!window.getUserMedia) {
          window.getUserMedia = navigator['getUserMedia'] ||
                                navigator['mozGetUserMedia'];
        }
        window.getUserMedia(func);
      },getMovementX:function(event) {
        return event['movementX'] ||
               event['mozMovementX'] ||
               event['webkitMovementX'] ||
               0;
      },getMovementY:function(event) {
        return event['movementY'] ||
               event['mozMovementY'] ||
               event['webkitMovementY'] ||
               0;
      },getMouseWheelDelta:function(event) {
        var delta = 0;
        switch (event.type) {
          case 'DOMMouseScroll':
            // 3 lines make up a step
            delta = event.detail / 3;
            break;
          case 'mousewheel':
            // 120 units make up a step
            delta = event.wheelDelta / 120;
            break;
          case 'wheel':
            delta = event.deltaY
            switch (event.deltaMode) {
              case 0:
                // DOM_DELTA_PIXEL: 100 pixels make up a step
                delta /= 100;
                break;
              case 1:
                // DOM_DELTA_LINE: 3 lines make up a step
                delta /= 3;
                break;
              case 2:
                // DOM_DELTA_PAGE: A page makes up 80 steps
                delta *= 80;
                break;
              default:
                throw 'unrecognized mouse wheel delta mode: ' + event.deltaMode;
            }
            break;
          default:
            throw 'unrecognized mouse wheel event: ' + event.type;
        }
        return delta;
      },mouseX:0,mouseY:0,mouseMovementX:0,mouseMovementY:0,touches:{},lastTouches:{},calculateMouseEvent:function(event) { // event should be mousemove, mousedown or mouseup
        if (Browser.pointerLock) {
          // When the pointer is locked, calculate the coordinates
          // based on the movement of the mouse.
          // Workaround for Firefox bug 764498
          if (event.type != 'mousemove' &&
              ('mozMovementX' in event)) {
            Browser.mouseMovementX = Browser.mouseMovementY = 0;
          } else {
            Browser.mouseMovementX = Browser.getMovementX(event);
            Browser.mouseMovementY = Browser.getMovementY(event);
          }
  
          // check if SDL is available
          if (typeof SDL != "undefined") {
            Browser.mouseX = SDL.mouseX + Browser.mouseMovementX;
            Browser.mouseY = SDL.mouseY + Browser.mouseMovementY;
          } else {
            // just add the mouse delta to the current absolut mouse position
            // FIXME: ideally this should be clamped against the canvas size and zero
            Browser.mouseX += Browser.mouseMovementX;
            Browser.mouseY += Browser.mouseMovementY;
          }
        } else {
          // Otherwise, calculate the movement based on the changes
          // in the coordinates.
          var rect = Module["canvas"].getBoundingClientRect();
          var cw = Module["canvas"].width;
          var ch = Module["canvas"].height;
  
          // Neither .scrollX or .pageXOffset are defined in a spec, but
          // we prefer .scrollX because it is currently in a spec draft.
          // (see: http://www.w3.org/TR/2013/WD-cssom-view-20131217/)
          var scrollX = ((typeof window.scrollX !== 'undefined') ? window.scrollX : window.pageXOffset);
          var scrollY = ((typeof window.scrollY !== 'undefined') ? window.scrollY : window.pageYOffset);
          // If this assert lands, it's likely because the browser doesn't support scrollX or pageXOffset
          // and we have no viable fallback.
          assert((typeof scrollX !== 'undefined') && (typeof scrollY !== 'undefined'), 'Unable to retrieve scroll position, mouse positions likely broken.');
  
          if (event.type === 'touchstart' || event.type === 'touchend' || event.type === 'touchmove') {
            var touch = event.touch;
            if (touch === undefined) {
              return; // the "touch" property is only defined in SDL
  
            }
            var adjustedX = touch.pageX - (scrollX + rect.left);
            var adjustedY = touch.pageY - (scrollY + rect.top);
  
            adjustedX = adjustedX * (cw / rect.width);
            adjustedY = adjustedY * (ch / rect.height);
  
            var coords = { x: adjustedX, y: adjustedY };
  
            if (event.type === 'touchstart') {
              Browser.lastTouches[touch.identifier] = coords;
              Browser.touches[touch.identifier] = coords;
            } else if (event.type === 'touchend' || event.type === 'touchmove') {
              var last = Browser.touches[touch.identifier];
              if (!last) last = coords;
              Browser.lastTouches[touch.identifier] = last;
              Browser.touches[touch.identifier] = coords;
            }
            return;
          }
  
          var x = event.pageX - (scrollX + rect.left);
          var y = event.pageY - (scrollY + rect.top);
  
          // the canvas might be CSS-scaled compared to its backbuffer;
          // SDL-using content will want mouse coordinates in terms
          // of backbuffer units.
          x = x * (cw / rect.width);
          y = y * (ch / rect.height);
  
          Browser.mouseMovementX = x - Browser.mouseX;
          Browser.mouseMovementY = y - Browser.mouseY;
          Browser.mouseX = x;
          Browser.mouseY = y;
        }
      },asyncLoad:function(url, onload, onerror, noRunDep) {
        var dep = !noRunDep ? getUniqueRunDependency('al ' + url) : '';
        readAsync(url, function(arrayBuffer) {
          assert(arrayBuffer, 'Loading data file "' + url + '" failed (no arrayBuffer).');
          onload(new Uint8Array(arrayBuffer));
          if (dep) removeRunDependency(dep);
        }, function(event) {
          if (onerror) {
            onerror();
          } else {
            throw 'Loading data file "' + url + '" failed.';
          }
        });
        if (dep) addRunDependency(dep);
      },resizeListeners:[],updateResizeListeners:function() {
        var canvas = Module['canvas'];
        Browser.resizeListeners.forEach(function(listener) {
          listener(canvas.width, canvas.height);
        });
      },setCanvasSize:function(width, height, noUpdates) {
        var canvas = Module['canvas'];
        Browser.updateCanvasDimensions(canvas, width, height);
        if (!noUpdates) Browser.updateResizeListeners();
      },windowedWidth:0,windowedHeight:0,setFullscreenCanvasSize:function() {
        // check if SDL is available
        if (typeof SDL != "undefined") {
          var flags = HEAPU32[((SDL.screen)>>2)];
          flags = flags | 0x00800000; // set SDL_FULLSCREEN flag
          HEAP32[((SDL.screen)>>2)] = flags
        }
        Browser.updateCanvasDimensions(Module['canvas']);
        Browser.updateResizeListeners();
      },setWindowedCanvasSize:function() {
        // check if SDL is available
        if (typeof SDL != "undefined") {
          var flags = HEAPU32[((SDL.screen)>>2)];
          flags = flags & ~0x00800000; // clear SDL_FULLSCREEN flag
          HEAP32[((SDL.screen)>>2)] = flags
        }
        Browser.updateCanvasDimensions(Module['canvas']);
        Browser.updateResizeListeners();
      },updateCanvasDimensions:function(canvas, wNative, hNative) {
        if (wNative && hNative) {
          canvas.widthNative = wNative;
          canvas.heightNative = hNative;
        } else {
          wNative = canvas.widthNative;
          hNative = canvas.heightNative;
        }
        var w = wNative;
        var h = hNative;
        if (Module['forcedAspectRatio'] && Module['forcedAspectRatio'] > 0) {
          if (w/h < Module['forcedAspectRatio']) {
            w = Math.round(h * Module['forcedAspectRatio']);
          } else {
            h = Math.round(w / Module['forcedAspectRatio']);
          }
        }
        if (((document['fullscreenElement'] || document['mozFullScreenElement'] ||
             document['msFullscreenElement'] || document['webkitFullscreenElement'] ||
             document['webkitCurrentFullScreenElement']) === canvas.parentNode) && (typeof screen != 'undefined')) {
           var factor = Math.min(screen.width / w, screen.height / h);
           w = Math.round(w * factor);
           h = Math.round(h * factor);
        }
        if (Browser.resizeCanvas) {
          if (canvas.width  != w) canvas.width  = w;
          if (canvas.height != h) canvas.height = h;
          if (typeof canvas.style != 'undefined') {
            canvas.style.removeProperty( "width");
            canvas.style.removeProperty("height");
          }
        } else {
          if (canvas.width  != wNative) canvas.width  = wNative;
          if (canvas.height != hNative) canvas.height = hNative;
          if (typeof canvas.style != 'undefined') {
            if (w != wNative || h != hNative) {
              canvas.style.setProperty( "width", w + "px", "important");
              canvas.style.setProperty("height", h + "px", "important");
            } else {
              canvas.style.removeProperty( "width");
              canvas.style.removeProperty("height");
            }
          }
        }
      },wgetRequests:{},nextWgetRequestHandle:0,getNextWgetRequestHandle:function() {
        var handle = Browser.nextWgetRequestHandle;
        Browser.nextWgetRequestHandle++;
        return handle;
      }};
  function _emscripten_set_main_loop_timing(mode, value) {
      Browser.mainLoop.timingMode = mode;
      Browser.mainLoop.timingValue = value;
  
      if (!Browser.mainLoop.func) {
        console.error('emscripten_set_main_loop_timing: Cannot set timing mode for main loop since a main loop does not exist! Call emscripten_set_main_loop first to set one up.');
        return 1; // Return non-zero on failure, can't set timing mode when there is no main loop.
      }
  
      if (!Browser.mainLoop.running) {
        
        Browser.mainLoop.running = true;
      }
      if (mode == 0 /*EM_TIMING_SETTIMEOUT*/) {
        Browser.mainLoop.scheduler = function Browser_mainLoop_scheduler_setTimeout() {
          var timeUntilNextTick = Math.max(0, Browser.mainLoop.tickStartTime + value - _emscripten_get_now())|0;
          setTimeout(Browser.mainLoop.runner, timeUntilNextTick); // doing this each time means that on exception, we stop
        };
        Browser.mainLoop.method = 'timeout';
      } else if (mode == 1 /*EM_TIMING_RAF*/) {
        Browser.mainLoop.scheduler = function Browser_mainLoop_scheduler_rAF() {
          Browser.requestAnimationFrame(Browser.mainLoop.runner);
        };
        Browser.mainLoop.method = 'rAF';
      } else if (mode == 2 /*EM_TIMING_SETIMMEDIATE*/) {
        if (typeof setImmediate === 'undefined') {
          // Emulate setImmediate. (note: not a complete polyfill, we don't emulate clearImmediate() to keep code size to minimum, since not needed)
          var setImmediates = [];
          var emscriptenMainLoopMessageId = 'setimmediate';
          var Browser_setImmediate_messageHandler = function(event) {
            // When called in current thread or Worker, the main loop ID is structured slightly different to accommodate for --proxy-to-worker runtime listening to Worker events,
            // so check for both cases.
            if (event.data === emscriptenMainLoopMessageId || event.data.target === emscriptenMainLoopMessageId) {
              event.stopPropagation();
              setImmediates.shift()();
            }
          }
          addEventListener("message", Browser_setImmediate_messageHandler, true);
          setImmediate = /** @type{function(function(): ?, ...?): number} */(function Browser_emulated_setImmediate(func) {
            setImmediates.push(func);
            if (ENVIRONMENT_IS_WORKER) {
              if (Module['setImmediates'] === undefined) Module['setImmediates'] = [];
              Module['setImmediates'].push(func);
              postMessage({target: emscriptenMainLoopMessageId}); // In --proxy-to-worker, route the message via proxyClient.js
            } else postMessage(emscriptenMainLoopMessageId, "*"); // On the main thread, can just send the message to itself.
          })
        }
        Browser.mainLoop.scheduler = function Browser_mainLoop_scheduler_setImmediate() {
          setImmediate(Browser.mainLoop.runner);
        };
        Browser.mainLoop.method = 'immediate';
      }
      return 0;
    }
  
  function _exit(status) {
      // void _exit(int status);
      // http://pubs.opengroup.org/onlinepubs/000095399/functions/exit.html
      exit(status);
    }
  function maybeExit() {
      if (!keepRuntimeAlive()) {
        try {
          _exit(EXITSTATUS);
        } catch (e) {
          if (e instanceof ExitStatus) {
            return;
          }
          throw e;
        }
      }
    }
  function setMainLoop(browserIterationFunc, fps, simulateInfiniteLoop, arg, noSetTiming) {
      assert(!Browser.mainLoop.func, 'emscripten_set_main_loop: there can only be one main loop function at once: call emscripten_cancel_main_loop to cancel the previous one before setting a new one with different parameters.');
  
      Browser.mainLoop.func = browserIterationFunc;
      Browser.mainLoop.arg = arg;
  
      var thisMainLoopId = Browser.mainLoop.currentlyRunningMainloop;
      function checkIsRunning() {
        if (thisMainLoopId < Browser.mainLoop.currentlyRunningMainloop) {
          
          maybeExit();
          return false;
        }
        return true;
      }
  
      // We create the loop runner here but it is not actually running until
      // _emscripten_set_main_loop_timing is called (which might happen a
      // later time).  This member signifies that the current runner has not
      // yet been started so that we can call runtimeKeepalivePush when it
      // gets it timing set for the first time.
      Browser.mainLoop.running = false;
      Browser.mainLoop.runner = function Browser_mainLoop_runner() {
        if (ABORT) return;
        if (Browser.mainLoop.queue.length > 0) {
          var start = Date.now();
          var blocker = Browser.mainLoop.queue.shift();
          blocker.func(blocker.arg);
          if (Browser.mainLoop.remainingBlockers) {
            var remaining = Browser.mainLoop.remainingBlockers;
            var next = remaining%1 == 0 ? remaining-1 : Math.floor(remaining);
            if (blocker.counted) {
              Browser.mainLoop.remainingBlockers = next;
            } else {
              // not counted, but move the progress along a tiny bit
              next = next + 0.5; // do not steal all the next one's progress
              Browser.mainLoop.remainingBlockers = (8*remaining + next)/9;
            }
          }
          console.log('main loop blocker "' + blocker.name + '" took ' + (Date.now() - start) + ' ms'); //, left: ' + Browser.mainLoop.remainingBlockers);
          Browser.mainLoop.updateStatus();
  
          // catches pause/resume main loop from blocker execution
          if (!checkIsRunning()) return;
  
          setTimeout(Browser.mainLoop.runner, 0);
          return;
        }
  
        // catch pauses from non-main loop sources
        if (!checkIsRunning()) return;
  
        // Implement very basic swap interval control
        Browser.mainLoop.currentFrameNumber = Browser.mainLoop.currentFrameNumber + 1 | 0;
        if (Browser.mainLoop.timingMode == 1/*EM_TIMING_RAF*/ && Browser.mainLoop.timingValue > 1 && Browser.mainLoop.currentFrameNumber % Browser.mainLoop.timingValue != 0) {
          // Not the scheduled time to render this frame - skip.
          Browser.mainLoop.scheduler();
          return;
        } else if (Browser.mainLoop.timingMode == 0/*EM_TIMING_SETTIMEOUT*/) {
          Browser.mainLoop.tickStartTime = _emscripten_get_now();
        }
  
        // Signal GL rendering layer that processing of a new frame is about to start. This helps it optimize
        // VBO double-buffering and reduce GPU stalls.
  
        if (Browser.mainLoop.method === 'timeout' && Module.ctx) {
          warnOnce('Looks like you are rendering without using requestAnimationFrame for the main loop. You should use 0 for the frame rate in emscripten_set_main_loop in order to use requestAnimationFrame, as that can greatly improve your frame rates!');
          Browser.mainLoop.method = ''; // just warn once per call to set main loop
        }
  
        Browser.mainLoop.runIter(browserIterationFunc);
  
        checkStackCookie();
  
        // catch pauses from the main loop itself
        if (!checkIsRunning()) return;
  
        // Queue new audio data. This is important to be right after the main loop invocation, so that we will immediately be able
        // to queue the newest produced audio samples.
        // TODO: Consider adding pre- and post- rAF callbacks so that GL.newRenderingFrameStarted() and SDL.audio.queueNewAudioData()
        //       do not need to be hardcoded into this function, but can be more generic.
        if (typeof SDL === 'object' && SDL.audio && SDL.audio.queueNewAudioData) SDL.audio.queueNewAudioData();
  
        Browser.mainLoop.scheduler();
      }
  
      if (!noSetTiming) {
        if (fps && fps > 0) _emscripten_set_main_loop_timing(0/*EM_TIMING_SETTIMEOUT*/, 1000.0 / fps);
        else _emscripten_set_main_loop_timing(1/*EM_TIMING_RAF*/, 1); // Do rAF by rendering each frame (no decimating)
  
        Browser.mainLoop.scheduler();
      }
  
      if (simulateInfiniteLoop) {
        throw 'unwind';
      }
    }
  function _emscripten_set_main_loop(func, fps, simulateInfiniteLoop) {
      var browserIterationFunc = wasmTable.get(func);
      setMainLoop(browserIterationFunc, fps, simulateInfiniteLoop);
    }

  function fillMouseEventData(eventStruct, e, target) {
      assert(eventStruct % 4 == 0);
      var idx = eventStruct >> 2;
      HEAP32[idx + 0] = e.screenX;
      HEAP32[idx + 1] = e.screenY;
      HEAP32[idx + 2] = e.clientX;
      HEAP32[idx + 3] = e.clientY;
      HEAP32[idx + 4] = e.ctrlKey;
      HEAP32[idx + 5] = e.shiftKey;
      HEAP32[idx + 6] = e.altKey;
      HEAP32[idx + 7] = e.metaKey;
      HEAP16[idx*2 + 16] = e.button;
      HEAP16[idx*2 + 17] = e.buttons;
  
      HEAP32[idx + 9] = e["movementX"]
        ;
  
      HEAP32[idx + 10] = e["movementY"]
        ;
  
      var rect = getBoundingClientRect(target);
      HEAP32[idx + 11] = e.clientX - rect.left;
      HEAP32[idx + 12] = e.clientY - rect.top;
  
    }
  function registerMouseEventCallback(target, userData, useCapture, callbackfunc, eventTypeId, eventTypeString, targetThread) {
      if (!JSEvents.mouseEvent) JSEvents.mouseEvent = _malloc( 64 );
      target = findEventTarget(target);
  
      var mouseEventHandlerFunc = function(ev) {
        var e = ev || event;
  
        // TODO: Make this access thread safe, or this could update live while app is reading it.
        fillMouseEventData(JSEvents.mouseEvent, e, target);
  
        if (wasmTable.get(callbackfunc)(eventTypeId, JSEvents.mouseEvent, userData)) e.preventDefault();
      };
  
      var eventHandler = {
        target: target,
        allowsDeferredCalls: eventTypeString != 'mousemove' && eventTypeString != 'mouseenter' && eventTypeString != 'mouseleave', // Mouse move events do not allow fullscreen/pointer lock requests to be handled in them!
        eventTypeString: eventTypeString,
        callbackfunc: callbackfunc,
        handlerFunc: mouseEventHandlerFunc,
        useCapture: useCapture
      };
      JSEvents.registerOrRemoveHandler(eventHandler);
    }
  function _emscripten_set_mousedown_callback_on_thread(target, userData, useCapture, callbackfunc, targetThread) {
      registerMouseEventCallback(target, userData, useCapture, callbackfunc, 5, "mousedown", targetThread);
      return 0;
    }

  function _emscripten_set_mousemove_callback_on_thread(target, userData, useCapture, callbackfunc, targetThread) {
      registerMouseEventCallback(target, userData, useCapture, callbackfunc, 8, "mousemove", targetThread);
      return 0;
    }

  function _emscripten_set_mouseup_callback_on_thread(target, userData, useCapture, callbackfunc, targetThread) {
      registerMouseEventCallback(target, userData, useCapture, callbackfunc, 6, "mouseup", targetThread);
      return 0;
    }

  function registerUiEventCallback(target, userData, useCapture, callbackfunc, eventTypeId, eventTypeString, targetThread) {
      if (!JSEvents.uiEvent) JSEvents.uiEvent = _malloc( 36 );
  
      target = findEventTarget(target);
  
      var uiEventHandlerFunc = function(ev) {
        var e = ev || event;
        if (e.target != target) {
          // Never take ui events such as scroll via a 'bubbled' route, but always from the direct element that
          // was targeted. Otherwise e.g. if app logs a message in response to a page scroll, the Emscripten log
          // message box could cause to scroll, generating a new (bubbled) scroll message, causing a new log print,
          // causing a new scroll, etc..
          return;
        }
        var b = document.body; // Take document.body to a variable, Closure compiler does not outline access to it on its own.
        if (!b) {
          // During a page unload 'body' can be null, with "Cannot read property 'clientWidth' of null" being thrown
          return;
        }
        var uiEvent = JSEvents.uiEvent;
        HEAP32[((uiEvent)>>2)] = e.detail;
        HEAP32[(((uiEvent)+(4))>>2)] = b.clientWidth;
        HEAP32[(((uiEvent)+(8))>>2)] = b.clientHeight;
        HEAP32[(((uiEvent)+(12))>>2)] = innerWidth;
        HEAP32[(((uiEvent)+(16))>>2)] = innerHeight;
        HEAP32[(((uiEvent)+(20))>>2)] = outerWidth;
        HEAP32[(((uiEvent)+(24))>>2)] = outerHeight;
        HEAP32[(((uiEvent)+(28))>>2)] = pageXOffset;
        HEAP32[(((uiEvent)+(32))>>2)] = pageYOffset;
        if (wasmTable.get(callbackfunc)(eventTypeId, uiEvent, userData)) e.preventDefault();
      };
  
      var eventHandler = {
        target: target,
        eventTypeString: eventTypeString,
        callbackfunc: callbackfunc,
        handlerFunc: uiEventHandlerFunc,
        useCapture: useCapture
      };
      JSEvents.registerOrRemoveHandler(eventHandler);
    }
  function _emscripten_set_resize_callback_on_thread(target, userData, useCapture, callbackfunc, targetThread) {
      registerUiEventCallback(target, userData, useCapture, callbackfunc, 10, "resize", targetThread);
      return 0;
    }

  function registerWheelEventCallback(target, userData, useCapture, callbackfunc, eventTypeId, eventTypeString, targetThread) {
      if (!JSEvents.wheelEvent) JSEvents.wheelEvent = _malloc( 96 );
  
      // The DOM Level 3 events spec event 'wheel'
      var wheelHandlerFunc = function(ev) {
        var e = ev || event;
        var wheelEvent = JSEvents.wheelEvent;
        fillMouseEventData(wheelEvent, e, target);
        HEAPF64[(((wheelEvent)+(64))>>3)] = e["deltaX"];
        HEAPF64[(((wheelEvent)+(72))>>3)] = e["deltaY"];
        HEAPF64[(((wheelEvent)+(80))>>3)] = e["deltaZ"];
        HEAP32[(((wheelEvent)+(88))>>2)] = e["deltaMode"];
        if (wasmTable.get(callbackfunc)(eventTypeId, wheelEvent, userData)) e.preventDefault();
      };
  
      var eventHandler = {
        target: target,
        allowsDeferredCalls: true,
        eventTypeString: eventTypeString,
        callbackfunc: callbackfunc,
        handlerFunc: wheelHandlerFunc,
        useCapture: useCapture
      };
      JSEvents.registerOrRemoveHandler(eventHandler);
    }
  function _emscripten_set_wheel_callback_on_thread(target, userData, useCapture, callbackfunc, targetThread) {
      target = findEventTarget(target);
      if (typeof target.onwheel !== 'undefined') {
        registerWheelEventCallback(target, userData, useCapture, callbackfunc, 9, "wheel", targetThread);
        return 0;
      } else {
        return -1;
      }
    }

  var WebGPU={initManagers:function() {
        if (this["mgrDevice"]) return;
  
        function makeManager() {
          return {
            objects: {},
            nextId: 1,
            create: function(object, wrapper /* = {} */) {
              wrapper = wrapper || {};
  
              var id = this.nextId++;
              assert(typeof this.objects[id] === 'undefined');
              wrapper.refcount = 1;
              wrapper.object = object;
              this.objects[id] = wrapper;
              return id;
            },
            get: function(id) {
              if (id === 0) return undefined;
              var o = this.objects[id];
              assert(typeof o !== "undefined");
              return o.object;
            },
            reference: function(id) {
              var o = this.objects[id];
              assert(typeof o !== "undefined");
              o.refcount++;
            },
            release: function(id) {
              var o = this.objects[id];
              assert(typeof o !== "undefined");
              assert(o.refcount > 0);
              o.refcount--;
              if (o.refcount <= 0) {
                delete this.objects[id];
              }
            },
          };
        }
  
        this.mgrSurface = this.mgrSurface || makeManager();
        this.mgrSwapChain = this.mgrSwapChain || makeManager();
  
        this["mgrDevice"] = this["mgrDevice"] || makeManager();
        this.mgrQueue = this.mgrQueue || makeManager();
  
        this.mgrCommandBuffer = this.mgrCommandBuffer || makeManager();
        this.mgrCommandEncoder = this.mgrCommandEncoder || makeManager();
        this.mgrRenderPassEncoder = this.mgrRenderPassEncoder || makeManager();
        this.mgrComputePassEncoder = this.mgrComputePassEncoder || makeManager();
  
        this.mgrBindGroup = this.mgrBindGroup || makeManager();
        this.mgrBuffer = this.mgrBuffer || makeManager();
        this.mgrSampler = this.mgrSampler || makeManager();
        this.mgrTexture = this.mgrTexture || makeManager();
        this.mgrTextureView = this.mgrTextureView || makeManager();
        this.mgrQuerySet = this.mgrQuerySet || makeManager();
  
        this.mgrBindGroupLayout = this.mgrBindGroupLayout || makeManager();
        this.mgrPipelineLayout = this.mgrPipelineLayout || makeManager();
        this.mgrRenderPipeline = this.mgrRenderPipeline || makeManager();
        this.mgrComputePipeline = this.mgrComputePipeline || makeManager();
        this.mgrShaderModule = this.mgrShaderModule || makeManager();
  
        this.mgrRenderBundleEncoder = this.mgrRenderBundleEncoder || makeManager();
        this.mgrRenderBundle = this.mgrRenderBundle || makeManager();
      },makeColor:function(ptr) {
        return {
          "r": HEAPF64[((ptr)>>3)],
          "g": HEAPF64[(((ptr)+(8))>>3)],
          "b": HEAPF64[(((ptr)+(16))>>3)],
          "a": HEAPF64[(((ptr)+(24))>>3)],
        };
      },makeExtent3D:function(ptr) {
        return {
          "width": HEAPU32[((ptr)>>2)],
          "height": HEAPU32[(((ptr)+(4))>>2)],
          "depthOrArrayLayers": HEAPU32[(((ptr)+(8))>>2)],
        };
      },makeOrigin3D:function(ptr) {
        return {
          "x": HEAPU32[((ptr)>>2)],
          "y": HEAPU32[(((ptr)+(4))>>2)],
          "z": HEAPU32[(((ptr)+(8))>>2)],
        };
      },makeImageCopyTexture:function(ptr) {
        assert(ptr);assert(HEAP32[((ptr)>>2)] === 0);
        return {
          "texture": this.mgrTexture.get(
            HEAP32[(((ptr)+(4))>>2)]),
          "mipLevel": HEAPU32[(((ptr)+(8))>>2)],
          "origin": WebGPU.makeOrigin3D(ptr + 12),
          "aspect": WebGPU.TextureAspect[HEAPU32[(((ptr)+(24))>>2)]],
        };
      },makeTextureDataLayout:function(ptr) {
        assert(ptr);assert(HEAP32[((ptr)>>2)] === 0);
        return {
          "offset": HEAPU32[((((ptr + 4))+(8))>>2)] * 0x100000000 + HEAPU32[(((ptr)+(8))>>2)],
          "bytesPerRow": HEAPU32[(((ptr)+(16))>>2)],
          "rowsPerImage": HEAPU32[(((ptr)+(20))>>2)],
        };
      },makeImageCopyBuffer:function(ptr) {
        assert(ptr);assert(HEAP32[((ptr)>>2)] === 0);
        var layoutPtr = ptr + 8;
        var bufferCopyView = this.makeTextureDataLayout(layoutPtr);
        bufferCopyView["buffer"] = this.mgrBuffer.get(
            HEAP32[(((ptr)+(32))>>2)]);
        return bufferCopyView;
      },makeProgrammableStageDescriptor:function(ptr) {
        if (ptr === 0) return undefined;
        assert(ptr);assert(HEAP32[((ptr)>>2)] === 0);
        return {
          "module": WebGPU.mgrShaderModule.get(
            HEAP32[(((ptr)+(4))>>2)]),
          "entryPoint": UTF8ToString(
            HEAP32[(((ptr)+(8))>>2)]),
        };
      },deviceQueues:{0:0},AddressMode:["repeat","mirror-repeat","clamp-to-edge"],BlendFactor:["zero","one","src","one-minus-src","src-alpha","one-minus-src-alpha","dst","one-minus-dst","dst-alpha","one-minus-dst-alpha","src-alpha-saturated","constant","one-minus-constant"],BlendOperation:["add","subtract","reverse-subtract","min","max"],BufferBindingType:[,"uniform","storage","read-only-storage"],BufferMapAsyncStatus:["success","error","unknown","device-lost","destroyed-before-callback","unmapped-before-callback"],CompareFunction:[,"never","less","less-equal","greater","greater-equal","equal","not-equal","always"],CullMode:["none","front","back"],ErrorFilter:["none","validation","out-of-memory"],ErrorType:["no-error","validation","out-of-memory","unknown","device-lost"],FilterMode:["nearest","linear"],FrontFace:["ccw","cw"],IndexFormat:[,"uint16","uint32"],InputStepMode:["vertex","instance"],LoadOp:["clear","load"],PipelineStatisticName:["vertex-shader-invocations","clipper-invocations","clipper-primitives-out","fragment-shader-invocations","compute-shader-invocations"],PrimitiveTopology:["point-list","line-list","line-strip","triangle-list","triangle-strip"],QueryType:["occlusion","pipeline-statistics","timestamp"],SamplerBindingType:[,"filtering","non-filtering","comparison"],StencilOperation:["keep","zero","replace","invert","increment-clamp","decrement-clamp","increment-wrap","decrement-wrap"],StorageTextureAccess:[,"readonly","writeonly"],StoreOp:["store","clear"],TextureAspect:["all","stencil-only","depth-only"],TextureDimension:["1d","2d","3d"],TextureFormat:[,"r8unorm","r8snorm","r8uint","r8sint","r16uint","r16sint","r16float","rg8unorm","rg8snorm","rg8uint","rg8sint","r32float","r32uint","r32sint","rg16uint","rg16sint","rg16float","rgba8unorm","rgba8unorm-srgb","rgba8snorm","rgba8uint","rgba8sint","bgra8unorm","bgra8unorm-srgb","rgb10a2unorm","rg11b10ufloat","rgb9e5ufloat","rg32float","rg32uint","rg32sint","rgba16uint","rgba16sint","rgba16float","rgba32float","rgba32uint","rgba32sint","depth32float","depth24plus","stencil8","depth24plus-stencil8","bc1rgba-unorm","bc1rgba-unorm-srgb","bc2rgba-unorm","bc2rgba-unorm-srgb","bc3rgba-unorm","bc3rgba-unorm-srgb","bc4r-unorm","bc4r-snorm","bc5rg-unorm","bc5rg-snorm","bc6h-rgb-ufloat","bc6h-rgb-float","bc7rgba-unorm","bc7rgba-unorm-srgb"],TextureSampleType:[,"float","unfilterable-float","depth","sint","uint"],TextureViewDimension:[,"1d","2d","2d-array","cube","cube-array","3d"],VertexFormat:[,"uint8x2","uint8x4","sint8x2","sint8x4","unorm8x2","unorm8x4","snorm8x2","snorm8x4","uint16x2","uint16x4","sint16x2","sint16x4","unorm16x2","unorm16x4","snorm16x2","snorm16x4","float16x2","float16x4","float32","float32x2","float32x3","float32x4","uint32","uint32x2","uint32x3","uint32x4","sint32","sint32x2","sint32x3","sint32x4"]};
  function _emscripten_webgpu_get_device() {
      assert(Module['preinitializedWebGPUDevice']);
      return WebGPU["mgrDevice"].create(Module['preinitializedWebGPUDevice']);
    }

  function _fd_close(fd) {try {
  
      var stream = SYSCALLS.getStreamFromFD(fd);
      FS.close(stream);
      return 0;
    } catch (e) {
    if (typeof FS === 'undefined' || !(e instanceof FS.ErrnoError)) abort(e);
    return e.errno;
  }
  }

  function _fd_read(fd, iov, iovcnt, pnum) {try {
  
      var stream = SYSCALLS.getStreamFromFD(fd);
      var num = SYSCALLS.doReadv(stream, iov, iovcnt);
      HEAP32[((pnum)>>2)] = num
      return 0;
    } catch (e) {
    if (typeof FS === 'undefined' || !(e instanceof FS.ErrnoError)) abort(e);
    return e.errno;
  }
  }

  function _fd_seek(fd, offset_low, offset_high, whence, newOffset) {try {
  
      
      var stream = SYSCALLS.getStreamFromFD(fd);
      var HIGH_OFFSET = 0x100000000; // 2^32
      // use an unsigned operator on low and shift high by 32-bits
      var offset = offset_high * HIGH_OFFSET + (offset_low >>> 0);
  
      var DOUBLE_LIMIT = 0x20000000000000; // 2^53
      // we also check for equality since DOUBLE_LIMIT + 1 == DOUBLE_LIMIT
      if (offset <= -DOUBLE_LIMIT || offset >= DOUBLE_LIMIT) {
        return -61;
      }
  
      FS.llseek(stream, offset, whence);
      (tempI64 = [stream.position>>>0,(tempDouble=stream.position,(+(Math.abs(tempDouble))) >= 1.0 ? (tempDouble > 0.0 ? ((Math.min((+(Math.floor((tempDouble)/4294967296.0))), 4294967295.0))|0)>>>0 : (~~((+(Math.ceil((tempDouble - +(((~~(tempDouble)))>>>0))/4294967296.0)))))>>>0) : 0)],HEAP32[((newOffset)>>2)] = tempI64[0],HEAP32[(((newOffset)+(4))>>2)] = tempI64[1]);
      if (stream.getdents && offset === 0 && whence === 0) stream.getdents = null; // reset readdir state
      return 0;
    } catch (e) {
    if (typeof FS === 'undefined' || !(e instanceof FS.ErrnoError)) abort(e);
    return e.errno;
  }
  }

  function _fd_write(fd, iov, iovcnt, pnum) {try {
  
      var stream = SYSCALLS.getStreamFromFD(fd);
      var num = SYSCALLS.doWritev(stream, iov, iovcnt);
      HEAP32[((pnum)>>2)] = num
      return 0;
    } catch (e) {
    if (typeof FS === 'undefined' || !(e instanceof FS.ErrnoError)) abort(e);
    return e.errno;
  }
  }

  function _setTempRet0(val) {
      setTempRet0(val);
    }

  function _system(command) {
      if (ENVIRONMENT_IS_NODE) {
        if (!command) return 1; // shell is available
  
        var cmdstr = UTF8ToString(command);
        if (!cmdstr.length) return 0; // this is what glibc seems to do (shell works test?)
  
        var cp = require('child_process');
        var ret = cp.spawnSync(cmdstr, [], {shell:true, stdio:'inherit'});
  
        var _W_EXITCODE = function(ret, sig) {
          return ((ret) << 8 | (sig));
        }
  
        // this really only can happen if process is killed by signal
        if (ret.status === null) {
          // sadly node doesn't expose such function
          var signalToNumber = function(sig) {
            // implement only the most common ones, and fallback to SIGINT
            switch (sig) {
              case 'SIGHUP': return 1;
              case 'SIGINT': return 2;
              case 'SIGQUIT': return 3;
              case 'SIGFPE': return 8;
              case 'SIGKILL': return 9;
              case 'SIGALRM': return 14;
              case 'SIGTERM': return 15;
            }
            return 2; // SIGINT
          }
          return _W_EXITCODE(0, signalToNumber(ret.signal));
        }
  
        return _W_EXITCODE(ret.status, 0);
      }
      // int system(const char *command);
      // http://pubs.opengroup.org/onlinepubs/000095399/functions/system.html
      // Can't call external programs.
      if (!command) return 0; // no shell available
      setErrNo(6);
      return -1;
    }

  function _time(ptr) {
      var ret = (Date.now()/1000)|0;
      if (ptr) {
        HEAP32[((ptr)>>2)] = ret;
      }
      return ret;
    }

  function _wgpuBindGroupLayoutReference(id) {
    WebGPU.mgrBindGroupLayout.reference(id);
  }

  function _wgpuBindGroupLayoutRelease(id) {
    WebGPU.mgrBindGroupLayout.release(id);
  }

  function _wgpuBindGroupRelease(id) {
    WebGPU.mgrBindGroup.release(id);
  }

  function _wgpuBufferDestroy(bufferId) { WebGPU.mgrBuffer.get(bufferId)["destroy"](); }

  function _wgpuBufferGetConstMappedRange(bufferId, offset, size) {
      var bufferWrapper = WebGPU.mgrBuffer.objects[bufferId];
  
      // TODO: if the sentinel value becomes WGPU_WHOLE_SIZE instead of 0, update this.
      if (size === 0) size = undefined;
  
      var mapped;
      try {
        mapped = bufferWrapper.object["getMappedRange"](offset, size);
      } catch (ex) {
        err("wgpuBufferGetConstMappedRange(" + offset + ", " + size + ") failed: " + ex);
        // TODO(kainino0x): Somehow inject a validation error?
        return 0;
      }
  
      var data = _malloc(mapped.byteLength);
      HEAPU8.set(new Uint8Array(mapped), data);
      bufferWrapper.onUnmap.push(function() {
        _free(data);
      });
      return data;
    }

  function _wgpuBufferGetMappedRange(bufferId, offset, size) {
      var bufferWrapper = WebGPU.mgrBuffer.objects[bufferId];
  
      // TODO: if the sentinel value becomes WGPU_WHOLE_SIZE instead of 0, update this.
      if (size === 0) size = undefined;
  
      if (bufferWrapper.mapMode !== 2) {
        abort("GetMappedRange called, but buffer not mapped for writing");
        // TODO(kainino0x): Somehow inject a validation error?
        return 0;
      }
  
      var mapped;
      try {
        mapped = bufferWrapper.object["getMappedRange"](offset, size);
      } catch (ex) {
        err("wgpuBufferGetMappedRange(" + offset + ", " + size + ") failed: " + ex);
        // TODO(kainino0x): Somehow inject a validation error?
        return 0;
      }
  
      var data = _malloc(mapped.byteLength);
      HEAPU8.fill(0, data, mapped.byteLength);
      bufferWrapper.onUnmap.push(function() {
        new Uint8Array(mapped).set(HEAPU8.subarray(data, data + mapped.byteLength));
        _free(data);
      });
      return data;
    }

  function _wgpuBufferMapAsync(bufferId, mode, offset, size, callback, userdata) {
      var bufferWrapper = WebGPU.mgrBuffer.objects[bufferId];
      bufferWrapper.mapMode = mode;
      bufferWrapper.onUnmap = [];
      var buffer = bufferWrapper.object;
  
      // `callback` takes (WGPUBufferMapAsyncStatus status, void * userdata)
  
      buffer["mapAsync"](mode, offset, size).then(function() {
        wasmTable.get(callback)(0 /* WGPUBufferMapAsyncStatus_Success */, userdata);
      }, function() {
        // TODO(kainino0x): Figure out how to pick other error status values.
        wasmTable.get(callback)(1 /* WGPUBufferMapAsyncStatus_Error */, userdata);
      });
    }

  function _wgpuBufferReference(id) {
    WebGPU.mgrBuffer.reference(id);
  }

  function _wgpuBufferRelease(id) {
    WebGPU.mgrBuffer.release(id);
  }

  function _wgpuBufferUnmap(bufferId) {
      var bufferWrapper = WebGPU.mgrBuffer.objects[bufferId];
  
      if (!bufferWrapper.onUnmap) {
        // Already unmapped
        return;
      }
  
      for (var i = 0; i < bufferWrapper.onUnmap.length; ++i) {
        bufferWrapper.onUnmap[i]();
      }
      bufferWrapper.onUnmap = undefined;
  
      bufferWrapper.object["unmap"]();
    }

  function _wgpuCommandBufferRelease(id) {
    WebGPU.mgrCommandBuffer.release(id);
  }

  function _wgpuCommandEncoderBeginComputePass(encoderId, descriptor) {
      var desc;
      if (descriptor) {
        assert(descriptor);assert(HEAP32[((descriptor)>>2)] === 0);
        desc = {};
        var labelPtr = HEAP32[(((descriptor)+(4))>>2)];
        if (labelPtr) desc["label"] = UTF8ToString(labelPtr);
      }
      var commandEncoder = WebGPU.mgrCommandEncoder.get(encoderId);
      return WebGPU.mgrComputePassEncoder.create(commandEncoder["beginComputePass"](desc));
    }

  function _wgpuCommandEncoderBeginRenderPass(encoderId, descriptor) {
      assert(descriptor);
  
      function makeColorAttachment(caPtr) {
        var loadValue = WebGPU.LoadOp[
            HEAPU32[(((caPtr)+(8))>>2)]];
        if (loadValue === 'clear') {
          loadValue = WebGPU.makeColor(caPtr + 16);
        }
  
        return {
          "view": WebGPU.mgrTextureView.get(
            HEAPU32[((caPtr)>>2)]),
          "resolveTarget": WebGPU.mgrTextureView.get(
            HEAPU32[(((caPtr)+(4))>>2)]),
          "storeOp": WebGPU.StoreOp[
            HEAPU32[(((caPtr)+(12))>>2)]],
          "loadValue": loadValue,
        };
      }
  
      function makeColorAttachments(count, caPtr) {
        var attachments = [];
        for (var i = 0; i < count; ++i) {
          attachments.push(makeColorAttachment(caPtr + 48 * i));
        }
        return attachments;
      }
  
      function makeDepthStencilAttachment(dsaPtr) {
        if (dsaPtr === 0) return undefined;
  
        var depthLoadValue = WebGPU.LoadOp[
            HEAPU32[(((dsaPtr)+(4))>>2)]];
        if (depthLoadValue === 'clear') {
          depthLoadValue = HEAPF32[(((dsaPtr)+(12))>>2)];
        }
  
        var stencilLoadValue = WebGPU.LoadOp[
            HEAPU32[(((dsaPtr)+(20))>>2)]];
        if (stencilLoadValue === 'clear') {
          stencilLoadValue = HEAPU32[(((dsaPtr)+(28))>>2)];
        }
  
        return {
          "view": WebGPU.mgrTextureView.get(
            HEAPU32[((dsaPtr)>>2)]),
          "depthStoreOp": WebGPU.StoreOp[
            HEAPU32[(((dsaPtr)+(8))>>2)]],
          "depthLoadValue": depthLoadValue,
          "depthReadOnly": (HEAP8[(((dsaPtr)+(16))>>0)] !== 0),
          "stencilStoreOp": WebGPU.StoreOp[
            HEAPU32[(((dsaPtr)+(24))>>2)]],
          "stencilLoadValue": stencilLoadValue,
          "stencilReadOnly": (HEAP8[(((dsaPtr)+(32))>>0)] !== 0),
        };
      }
  
      function makeRenderPassDescriptor(descriptor) {
        assert(descriptor);assert(HEAP32[((descriptor)>>2)] === 0);
        var desc = {
          "label": undefined,
          "colorAttachments": makeColorAttachments(
            HEAPU32[(((descriptor)+(8))>>2)],
            HEAP32[(((descriptor)+(12))>>2)]),
          "depthStencilAttachment": makeDepthStencilAttachment(
            HEAP32[(((descriptor)+(16))>>2)]),
          "occlusionQuerySet": WebGPU.mgrQuerySet.get(
            HEAP32[(((descriptor)+(20))>>2)]),
        };
        var labelPtr = HEAP32[(((descriptor)+(4))>>2)];
        if (labelPtr) desc["label"] = UTF8ToString(labelPtr);
        return desc;
      }
  
      var desc = makeRenderPassDescriptor(descriptor);
  
      var commandEncoder = WebGPU.mgrCommandEncoder.get(encoderId);
      return WebGPU.mgrRenderPassEncoder.create(commandEncoder["beginRenderPass"](desc));
    }

  function _wgpuCommandEncoderCopyBufferToBuffer(encoderId, srcId, srcOffset_low, srcOffset_high, dstId, dstOffset_low, dstOffset_high, size_low, size_high) {
      
      
      
      var commandEncoder = WebGPU.mgrCommandEncoder.get(encoderId);
      var src = WebGPU.mgrBuffer.get(srcId);
      var dst = WebGPU.mgrBuffer.get(dstId);
      commandEncoder["copyBufferToBuffer"](
        src, (assert(srcOffset_high < 0x200000), srcOffset_high * 0x100000000 + srcOffset_low)
  ,
        dst, (assert(dstOffset_high < 0x200000), dstOffset_high * 0x100000000 + dstOffset_low)
  ,
        (assert(size_high < 0x200000), size_high * 0x100000000 + size_low)
  );
    }

  function _wgpuCommandEncoderCopyBufferToTexture(encoderId, srcPtr, dstPtr, copySizePtr) {
      var commandEncoder = WebGPU.mgrCommandEncoder.get(encoderId);
      var copySize = WebGPU.makeExtent3D(copySizePtr);
      commandEncoder["copyBufferToTexture"](
        WebGPU.makeImageCopyBuffer(srcPtr), WebGPU.makeImageCopyTexture(dstPtr), copySize);
    }

  function _wgpuCommandEncoderCopyTextureToBuffer(encoderId, srcPtr, dstPtr, copySizePtr) {
      var commandEncoder = WebGPU.mgrCommandEncoder.get(encoderId);
      var copySize = WebGPU.makeExtent3D(copySizePtr);
      commandEncoder["copyTextureToBuffer"](
        WebGPU.makeImageCopyTexture(srcPtr), WebGPU.makeImageCopyBuffer(dstPtr), copySize);
    }

  function _wgpuCommandEncoderCopyTextureToTexture(encoderId, srcPtr, dstPtr, copySizePtr) {
      var commandEncoder = WebGPU.mgrCommandEncoder.get(encoderId);
      var copySize = WebGPU.makeExtent3D(copySizePtr);
      commandEncoder["copyTextureToTexture"](
        WebGPU.makeImageCopyTexture(srcPtr), WebGPU.makeImageCopyTexture(dstPtr), copySize);
    }

  function _wgpuCommandEncoderFinish(encoderId) {
      var commandEncoder = WebGPU.mgrCommandEncoder.get(encoderId);
      return WebGPU.mgrCommandBuffer.create(commandEncoder["finish"]());
    }

  function _wgpuCommandEncoderReference(id) {
    WebGPU.mgrCommandEncoder.reference(id);
  }

  function _wgpuCommandEncoderRelease(id) {
    WebGPU.mgrCommandEncoder.release(id);
  }

  function _wgpuComputePassEncoderDispatch(passId, x, y, z) {
      var pass = WebGPU.mgrComputePassEncoder.get(passId);
      pass["dispatch"](x, y, z);
    }

  function _wgpuComputePassEncoderDispatchIndirect(passId, indirectBufferId, indirectOffset_low, indirectOffset_high) {
      
      var indirectBuffer = WebGPU.mgrBuffer.get(indirectBufferId);
      var indirectOffset = (assert(indirectOffset_high < 0x200000), indirectOffset_high * 0x100000000 + indirectOffset_low)
  ;
      var pass = WebGPU.mgrComputePassEncoder.get(passId);
      pass["dispatchIndirect"](indirectBuffer, indirectOffset);
    }

  function _wgpuComputePassEncoderEndPass(passId) {
      var pass = WebGPU.mgrComputePassEncoder.get(passId);
      pass["endPass"]();
    }

  function _wgpuComputePassEncoderRelease(id) {
    WebGPU.mgrComputePassEncoder.release(id);
  }

  function _wgpuComputePassEncoderSetBindGroup(passId, groupIndex, groupId, dynamicOffsetCount, dynamicOffsetsPtr) {
      var pass = WebGPU.mgrComputePassEncoder.get(passId);
      var group = WebGPU.mgrBindGroup.get(groupId);
      if (dynamicOffsetCount == 0) {
        pass["setBindGroup"](groupIndex, group);
      } else {
        var offsets = [];
        for (var i = 0; i < dynamicOffsetCount; i++, dynamicOffsetsPtr += 4) {
          offsets.push(HEAPU32[((dynamicOffsetsPtr)>>2)]);
        }
        pass["setBindGroup"](groupIndex, group, offsets);
      }
    }

  function _wgpuComputePassEncoderSetPipeline(passId, pipelineId) {
      var pass = WebGPU.mgrComputePassEncoder.get(passId);
      var pipeline = WebGPU.mgrComputePipeline.get(pipelineId);
      pass["setPipeline"](pipeline);
    }

  function _wgpuComputePipelineRelease(id) {
    WebGPU.mgrComputePipeline.release(id);
  }

  function _wgpuDeviceCreateBindGroup(deviceId, descriptor) {
      assert(descriptor);assert(HEAP32[((descriptor)>>2)] === 0);
  
      function makeEntry(entryPtr) {
        assert(entryPtr);
  
        var bufferId = HEAPU32[(((entryPtr)+(4))>>2)];
        var samplerId = HEAPU32[(((entryPtr)+(24))>>2)];
        var textureViewId = HEAPU32[(((entryPtr)+(28))>>2)];
        assert((bufferId != 0) + (samplerId != 0) + (textureViewId != 0) == 1);
  
        var binding = HEAPU32[((entryPtr)>>2)];
  
        if (bufferId != 0) {
          var size = undefined;
  
          // Handle WGPU_WHOLE_SIZE.
          var sizePart1 = HEAPU32[(((entryPtr)+(16))>>2)];
          var sizePart2 = HEAPU32[(((entryPtr)+(20))>>2)];
          if (sizePart1 != 0xFFFFFFFF || sizePart2 != 0xFFFFFFFF) {
            size = HEAPU32[((((entryPtr + 4))+(16))>>2)] * 0x100000000 + HEAPU32[(((entryPtr)+(16))>>2)];
          }
  
          return {
            "binding": binding,
            "resource": {
              "buffer": WebGPU.mgrBuffer.get(bufferId),
              "offset": HEAPU32[((((entryPtr + 4))+(8))>>2)] * 0x100000000 + HEAPU32[(((entryPtr)+(8))>>2)],
              "size": size,
            },
          };
        } else if (samplerId != 0) {
          return {
            "binding": binding,
            "resource": WebGPU.mgrSampler.get(samplerId),
          };
        } else {
          return {
            "binding": binding,
            "resource": WebGPU.mgrTextureView.get(textureViewId),
          };
        }
      }
  
      function makeEntries(count, entriesPtrs) {
        var entries = [];
        for (var i = 0; i < count; ++i) {
          entries.push(makeEntry(entriesPtrs +
              32 * i));
        }
        return entries;
      }
  
      var desc = {
        "label": undefined,
        "layout": WebGPU.mgrBindGroupLayout.get(
          HEAP32[(((descriptor)+(8))>>2)]),
        "entries": makeEntries(
          HEAPU32[(((descriptor)+(12))>>2)],
          HEAP32[(((descriptor)+(16))>>2)]
        ),
      };
      var labelPtr = HEAP32[(((descriptor)+(4))>>2)];
      if (labelPtr) desc["label"] = UTF8ToString(labelPtr);
  
      var device = WebGPU["mgrDevice"].get(deviceId);
      return WebGPU.mgrBindGroup.create(device["createBindGroup"](desc));
    }

  function _wgpuDeviceCreateBindGroupLayout(deviceId, descriptor) {
      assert(descriptor);assert(HEAP32[((descriptor)>>2)] === 0);
  
      function makeBufferEntry(entryPtr) {
        assert(entryPtr);
  
        var typeInt =
          HEAPU32[(((entryPtr)+(4))>>2)];
        if (typeInt === 0) return undefined;
  
        return {
          "type": WebGPU.BufferBindingType[typeInt],
          "hasDynamicOffset":
            (HEAP8[(((entryPtr)+(8))>>0)] !== 0),
          "minBindingSize":
            HEAPU32[((((entryPtr + 4))+(16))>>2)] * 0x100000000 + HEAPU32[(((entryPtr)+(16))>>2)],
        };
      }
  
      function makeSamplerEntry(entryPtr) {
        assert(entryPtr);
  
        var typeInt =
          HEAPU32[(((entryPtr)+(4))>>2)];
        if (typeInt === 0) return undefined;
  
        return {
          "type": WebGPU.SamplerBindingType[typeInt],
        };
      }
  
      function makeTextureEntry(entryPtr) {
        assert(entryPtr);
  
        var sampleTypeInt =
          HEAPU32[(((entryPtr)+(4))>>2)];
        if (sampleTypeInt === 0) return undefined;
  
        return {
          "sampleType": WebGPU.TextureSampleType[sampleTypeInt],
          "viewDimension": WebGPU.TextureViewDimension[
            HEAPU32[(((entryPtr)+(8))>>2)]],
          "multisampled":
            (HEAP8[(((entryPtr)+(12))>>0)] !== 0),
        };
      }
  
      function makeStorageTextureEntry(entryPtr) {
        assert(entryPtr);
  
        var accessInt =
          HEAPU32[(((entryPtr)+(4))>>2)]
        if (accessInt === 0) return undefined;
  
        return {
          "access": WebGPU.StorageTextureAccess[accessInt],
          "format": WebGPU.TextureFormat[
            HEAPU32[(((entryPtr)+(8))>>2)]],
          "viewDimension": WebGPU.TextureViewDimension[
            HEAPU32[(((entryPtr)+(12))>>2)]],
        };
      }
  
      function makeEntry(entryPtr) {
        assert(entryPtr);
  
        return {
          "binding":
            HEAPU32[(((entryPtr)+(4))>>2)],
          "visibility":
            HEAPU32[(((entryPtr)+(8))>>2)],
          "buffer": makeBufferEntry(entryPtr + 16),
          "sampler": makeSamplerEntry(entryPtr + 40),
          "texture": makeTextureEntry(entryPtr + 48),
          "storageTexture": makeStorageTextureEntry(entryPtr + 64),
        };
      }
  
      function makeEntries(count, entriesPtrs) {
        var entries = [];
        for (var i = 0; i < count; ++i) {
          entries.push(makeEntry(entriesPtrs +
              80 * i));
        }
        return entries;
      }
  
      var desc = {
        "entries": makeEntries(
          HEAPU32[(((descriptor)+(8))>>2)],
          HEAP32[(((descriptor)+(12))>>2)]
        ),
      };
      var labelPtr = HEAP32[(((descriptor)+(4))>>2)];
      if (labelPtr) desc["label"] = UTF8ToString(labelPtr);
  
      var device = WebGPU["mgrDevice"].get(deviceId);
      return WebGPU.mgrBindGroupLayout.create(device["createBindGroupLayout"](desc));
    }

  function _wgpuDeviceCreateBuffer(deviceId, descriptor) {
      assert(descriptor);assert(HEAP32[((descriptor)>>2)] === 0);
  
      var mappedAtCreation = (HEAP8[(((descriptor)+(24))>>0)] !== 0);
  
      var desc = {
        "label": undefined,
        "usage": HEAPU32[(((descriptor)+(8))>>2)],
        "size": HEAPU32[((((descriptor + 4))+(16))>>2)] * 0x100000000 + HEAPU32[(((descriptor)+(16))>>2)],
        "mappedAtCreation": mappedAtCreation,
      };
      var labelPtr = HEAP32[(((descriptor)+(4))>>2)];
      if (labelPtr) desc["label"] = UTF8ToString(labelPtr);
  
      var device = WebGPU["mgrDevice"].get(deviceId);
      var id = WebGPU.mgrBuffer.create(device["createBuffer"](desc));
      if (mappedAtCreation) {
        var bufferWrapper = WebGPU.mgrBuffer.objects[id];
        bufferWrapper.mapMode = 2;
        bufferWrapper.onUnmap = [];
      }
      return id;
    }

  function _wgpuDeviceCreateCommandEncoder(deviceId, descriptor) {
      var desc;
      if (descriptor) {
        assert(descriptor);assert(HEAP32[((descriptor)>>2)] === 0);
        desc = {
          "label": undefined,
        };
        var labelPtr = HEAP32[(((descriptor)+(4))>>2)];
        if (labelPtr) desc["label"] = UTF8ToString(labelPtr);
      }
      var device = WebGPU["mgrDevice"].get(deviceId);
      return WebGPU.mgrCommandEncoder.create(device["createCommandEncoder"](desc));
    }

  function _wgpuDeviceCreateComputePipeline(deviceId, descriptor) {
      assert(descriptor);assert(HEAP32[((descriptor)>>2)] === 0);
  
      var desc = {
        "label": undefined,
        "layout":  WebGPU.mgrPipelineLayout.get(
          HEAP32[(((descriptor)+(8))>>2)]),
        "computeStage": WebGPU.makeProgrammableStageDescriptor(
          descriptor + 12),
      };
      var labelPtr = HEAP32[(((descriptor)+(4))>>2)];
      if (labelPtr) desc["label"] = UTF8ToString(labelPtr);
  
      var device = WebGPU["mgrDevice"].get(deviceId);
      return WebGPU.mgrComputePipeline.create(device["createComputePipeline"](desc));
    }

  function _wgpuDeviceCreatePipelineLayout(deviceId, descriptor) {
      assert(descriptor);assert(HEAP32[((descriptor)>>2)] === 0);
      var bglCount = HEAPU32[(((descriptor)+(8))>>2)];
      var bglPtr = HEAP32[(((descriptor)+(12))>>2)];
      var bgls = [];
      for (var i = 0; i < bglCount; ++i) {
        bgls.push(WebGPU.mgrBindGroupLayout.get(
          HEAP32[(((bglPtr)+(4 * i))>>2)]));
      }
      var desc = {
        "label": undefined,
        "bindGroupLayouts": bgls,
      };
      var labelPtr = HEAP32[(((descriptor)+(4))>>2)];
      if (labelPtr) desc["label"] = UTF8ToString(labelPtr);
  
      var device = WebGPU["mgrDevice"].get(deviceId);
      return WebGPU.mgrPipelineLayout.create(device["createPipelineLayout"](desc));
    }

  function _wgpuDeviceCreateRenderPipeline2(deviceId, descriptor) {
      assert(descriptor);assert(HEAP32[((descriptor)>>2)] === 0);
  
      function makePrimitiveState(rsPtr) {
        if (rsPtr === 0) return undefined;
        assert(rsPtr);assert(HEAP32[((rsPtr)>>2)] === 0);
        return {
          "topology": WebGPU.PrimitiveTopology[
            HEAPU32[(((rsPtr)+(4))>>2)]],
          "stripIndexFormat": WebGPU.IndexFormat[
            HEAPU32[(((rsPtr)+(8))>>2)]],
          "frontFace": WebGPU.FrontFace[
            HEAPU32[(((rsPtr)+(12))>>2)]],
          "cullMode": WebGPU.CullMode[
            HEAPU32[(((rsPtr)+(16))>>2)]],
        };
      }
  
      function makeBlendComponent(bdPtr) {
        if (bdPtr === 0) return undefined;
        return {
          "operation": WebGPU.BlendOperation[
            HEAPU32[((bdPtr)>>2)]],
          "srcFactor": WebGPU.BlendFactor[
            HEAPU32[(((bdPtr)+(4))>>2)]],
          "dstFactor": WebGPU.BlendFactor[
            HEAPU32[(((bdPtr)+(8))>>2)]],
        };
      }
  
      function makeBlendState(bsPtr) {
        if (bsPtr === 0) return undefined;
        assert(bsPtr);assert(HEAP32[((bsPtr)>>2)] === 0);
        return {
          "alpha": makeBlendComponent(bsPtr + 12),
          "color": makeBlendComponent(bsPtr + 0),
        };
      }
  
      function makeColorState(csPtr) {
        assert(csPtr);assert(HEAP32[((csPtr)>>2)] === 0);
        return {
          "format": WebGPU.TextureFormat[
            HEAPU32[(((csPtr)+(4))>>2)]],
          "blend": makeBlendState(HEAP32[(((csPtr)+(8))>>2)]),
          "writeMask": HEAPU32[(((csPtr)+(12))>>2)],
        };
      }
  
      function makeColorStates(count, csArrayPtr) {
        if (count === 0) return undefined;
  
        var states = [];
        for (var i = 0; i < count; ++i) {
          states.push(makeColorState(csArrayPtr + 16 * i));
        }
        return states;
      }
  
      function makeStencilStateFace(ssfPtr) {
        assert(ssfPtr);
        return {
          "compare": WebGPU.CompareFunction[
            HEAPU32[((ssfPtr)>>2)]],
          "failOp": WebGPU.StencilOperation[
            HEAPU32[(((ssfPtr)+(4))>>2)]],
          "depthFailOp": WebGPU.StencilOperation[
            HEAPU32[(((ssfPtr)+(8))>>2)]],
          "passOp": WebGPU.StencilOperation[
            HEAPU32[(((ssfPtr)+(12))>>2)]],
        };
      }
  
      function makeDepthStencilState(dssPtr) {
        if (dssPtr === 0) return undefined;
  
        assert(dssPtr);
        return {
          "format": WebGPU.TextureFormat[
            HEAPU32[(((dssPtr)+(4))>>2)]],
          "depthWriteEnabled": (HEAP8[(((dssPtr)+(8))>>0)] !== 0),
          "depthCompare": WebGPU.CompareFunction[
            HEAPU32[(((dssPtr)+(12))>>2)]],
          "stencilFront": makeStencilStateFace(dssPtr + 16),
          "stencilBack": makeStencilStateFace(dssPtr + 32),
          "stencilReadMask": HEAPU32[(((dssPtr)+(48))>>2)],
          "stencilWriteMask": HEAPU32[(((dssPtr)+(52))>>2)],
        };
      }
  
      function makeVertexAttribute(vaPtr) {
        assert(vaPtr);
        return {
          "format": WebGPU.VertexFormat[
            HEAPU32[((vaPtr)>>2)]],
          "offset": HEAPU32[((((vaPtr + 4))+(8))>>2)] * 0x100000000 + HEAPU32[(((vaPtr)+(8))>>2)],
          "shaderLocation": HEAPU32[(((vaPtr)+(16))>>2)],
        };
      }
  
      function makeVertexAttributes(count, vaArrayPtr) {
        var vas = [];
        for (var i = 0; i < count; ++i) {
          vas.push(makeVertexAttribute(vaArrayPtr + i * 24));
        }
        return vas;
      }
  
      function makeVertexBuffer(vbPtr) {
        if (vbPtr === 0) return undefined;
  
        return {
          "arrayStride": HEAPU32[(((vbPtr + 4))>>2)] * 0x100000000 + HEAPU32[((vbPtr)>>2)],
          "stepMode": WebGPU.InputStepMode[
            HEAPU32[(((vbPtr)+(8))>>2)]],
          "attributes": makeVertexAttributes(
            HEAPU32[(((vbPtr)+(12))>>2)],
            HEAP32[(((vbPtr)+(16))>>2)]),
        };
      }
  
      function makeVertexBuffers(count, vbArrayPtr) {
        if (count === 0) return undefined;
  
        var vbs = [];
        for (var i = 0; i < count; ++i) {
          vbs.push(makeVertexBuffer(vbArrayPtr + i * 24));
        }
        return vbs;
      }
  
      function makeVertexState(viPtr) {
        if (viPtr === 0) return undefined;
        assert(viPtr);assert(HEAP32[((viPtr)>>2)] === 0);
        return {
          "module": WebGPU.mgrShaderModule.get(
            HEAP32[(((viPtr)+(4))>>2)]),
          "entryPoint": UTF8ToString(
            HEAP32[(((viPtr)+(8))>>2)]),
          "buffers": makeVertexBuffers(
            HEAPU32[(((viPtr)+(12))>>2)],
            HEAP32[(((viPtr)+(16))>>2)]),
        };
      }
  
      function makeMultisampleState(msPtr) {
        if (msPtr === 0) return undefined;
        assert(msPtr);assert(HEAP32[((msPtr)>>2)] === 0);
        return {
          "count": HEAPU32[(((msPtr)+(4))>>2)],
          "mask": HEAPU32[(((msPtr)+(8))>>2)],
          "alphaToCoverageEnabled": (HEAP8[(((msPtr)+(12))>>0)] !== 0),
        };
      }
  
      function makeFragmentState(fsPtr) {
        if (fsPtr === 0) return undefined;
        assert(fsPtr);assert(HEAP32[((fsPtr)>>2)] === 0);
        return {
          "module": WebGPU.mgrShaderModule.get(
            HEAP32[(((fsPtr)+(4))>>2)]),
          "entryPoint": UTF8ToString(
            HEAP32[(((fsPtr)+(8))>>2)]),
          "targets": makeColorStates(
            HEAPU32[(((fsPtr)+(12))>>2)],
            HEAP32[(((fsPtr)+(16))>>2)]),
        };
      }
  
      var desc = {
        "label": undefined,
        "layout": WebGPU.mgrPipelineLayout.get(
          HEAP32[(((descriptor)+(8))>>2)]),
        "vertex": makeVertexState(
          descriptor + 12),
        "primitive": makePrimitiveState(
          descriptor + 32),
        "depthStencil": makeDepthStencilState(
          HEAP32[(((descriptor)+(52))>>2)]),
        "multisample": makeMultisampleState(
          descriptor + 56),
        "fragment": makeFragmentState(
          HEAP32[(((descriptor)+(72))>>2)]),
      };
      var labelPtr = HEAP32[(((descriptor)+(4))>>2)];
      if (labelPtr) desc["label"] = UTF8ToString(labelPtr);
  
      var device = WebGPU["mgrDevice"].get(deviceId);
      return WebGPU.mgrRenderPipeline.create(device["createRenderPipeline"](desc));
    }

  function _wgpuDeviceCreateSampler(deviceId, descriptor) {
      assert(descriptor);assert(HEAP32[((descriptor)>>2)] === 0);
  
      var desc = {
        "label": undefined,
        "addressModeU": WebGPU.AddressMode[
            HEAPU32[(((descriptor)+(8))>>2)]],
        "addressModeV": WebGPU.AddressMode[
            HEAPU32[(((descriptor)+(12))>>2)]],
        "addressModeW": WebGPU.AddressMode[
            HEAPU32[(((descriptor)+(16))>>2)]],
        "magFilter": WebGPU.FilterMode[
            HEAPU32[(((descriptor)+(20))>>2)]],
        "minFilter": WebGPU.FilterMode[
            HEAPU32[(((descriptor)+(24))>>2)]],
        "mipmapFilter": WebGPU.FilterMode[
            HEAPU32[(((descriptor)+(28))>>2)]],
        "lodMinClamp": HEAPF32[(((descriptor)+(32))>>2)],
        "lodMaxClamp": HEAPF32[(((descriptor)+(36))>>2)],
        "compare": WebGPU.CompareFunction[
            HEAPU32[(((descriptor)+(40))>>2)]],
      };
      var labelPtr = HEAP32[(((descriptor)+(4))>>2)];
      if (labelPtr) desc["label"] = UTF8ToString(labelPtr);
  
      var device = WebGPU["mgrDevice"].get(deviceId);
      return WebGPU.mgrSampler.create(device["createSampler"](desc));
    }

  function _wgpuDeviceCreateShaderModule(deviceId, descriptor) {
      assert(descriptor);
      var nextInChainPtr = HEAP32[((descriptor)>>2)];
      assert(nextInChainPtr !== 0);
      var sType = HEAPU32[(((nextInChainPtr)+(4))>>2)];
      assert(sType === 5
          || sType === 6);
      var desc = {
        "label": undefined,
        "code": "",
      };
      var labelPtr = HEAP32[(((descriptor)+(4))>>2)];
      if (labelPtr) desc["label"] = UTF8ToString(labelPtr);
  
      if (sType === 5) {
        var count = HEAPU32[(((nextInChainPtr)+(8))>>2)];
        var start = HEAP32[(((nextInChainPtr)+(12))>>2)];
        desc["code"] = HEAPU32.subarray(start >> 2, (start >> 2) + count);
      } else if (sType === 6) {
        var sourcePtr = HEAP32[(((nextInChainPtr)+(8))>>2)];
        if (sourcePtr) {
          desc["code"] = UTF8ToString(sourcePtr);
        }
      }
  
      var device = WebGPU["mgrDevice"].get(deviceId);
      return WebGPU.mgrShaderModule.create(device["createShaderModule"](desc));
    }

  function _wgpuDeviceCreateSwapChain(deviceId, surfaceId, descriptor) {
      assert(descriptor);assert(HEAP32[((descriptor)>>2)] === 0);
      var device = WebGPU["mgrDevice"].get(deviceId);
      var canvas = WebGPU.mgrSurface.get(surfaceId);
  
      canvas.width = HEAPU32[(((descriptor)+(16))>>2)];
      canvas.height = HEAPU32[(((descriptor)+(20))>>2)];
  
      var ctx = canvas.getContext('gpupresent');
      assert(2 ===
        HEAPU32[(((descriptor)+(24))>>2)]);
  
      var desc = {
        "label": undefined,
        "device": device,
        "format": WebGPU.TextureFormat[
          HEAPU32[(((descriptor)+(12))>>2)]],
        "usage": HEAPU32[(((descriptor)+(8))>>2)],
      };
      var labelPtr = HEAP32[(((descriptor)+(4))>>2)];
      if (labelPtr) desc["label"] = UTF8ToString(labelPtr);
      var swapChain = ctx["configureSwapChain"](desc);
  
      return WebGPU.mgrSwapChain.create(swapChain);
    }

  function _wgpuDeviceCreateTexture(deviceId, descriptor) {
      assert(descriptor);assert(HEAP32[((descriptor)>>2)] === 0);
  
      var desc = {
        "label": undefined,
        "size": WebGPU.makeExtent3D(descriptor + 16),
        "mipLevelCount": HEAPU32[(((descriptor)+(32))>>2)],
        "sampleCount": HEAPU32[(((descriptor)+(36))>>2)],
        "dimension": WebGPU.TextureDimension[
          HEAPU32[(((descriptor)+(12))>>2)]],
        "format": WebGPU.TextureFormat[
          HEAPU32[(((descriptor)+(28))>>2)]],
        "usage": HEAPU32[(((descriptor)+(8))>>2)],
      };
      var labelPtr = HEAP32[(((descriptor)+(4))>>2)];
      if (labelPtr) desc["label"] = UTF8ToString(labelPtr);
  
      var device = WebGPU["mgrDevice"].get(deviceId);
      return WebGPU.mgrTexture.create(device["createTexture"](desc));
    }

  function _wgpuDeviceGetQueue(deviceId) {
      var queueId = WebGPU.deviceQueues[deviceId];
      assert(queueId != 0, 'got invalid queue');
      if (queueId === undefined) {
        var device = WebGPU["mgrDevice"].get(deviceId);
        WebGPU.deviceQueues[deviceId] = WebGPU.mgrQueue.create(device["queue"]);
        queueId = WebGPU.deviceQueues[deviceId];
      } else {
        WebGPU.mgrQueue.reference(queueId);
      }
      return queueId;
    }

  function _wgpuDeviceReference(id) {
    WebGPU.mgrDevice.reference(id);
  }

  function _wgpuDeviceRelease(id) {
    WebGPU.mgrDevice.release(id);
  }

  function _wgpuDeviceSetUncapturedErrorCallback(deviceId, callback, userdata) {
      var device = WebGPU["mgrDevice"].get(deviceId);
      device["onuncapturederror"] = function(ev) {
        // WGPUErrorType type, const char* message, void* userdata
        var Validation = 0x00000001;
        var OutOfMemory = 0x00000002;
        var type;
        assert(typeof GPUValidationError !== 'undefined');
        assert(typeof GPUOutOfMemoryError !== 'undefined');
        if (ev.error instanceof GPUValidationError) type = Validation;
        else if (ev.error instanceof GPUOutOfMemoryError) type = OutOfMemory;
        var messagePtr = allocateUTF8(ev.error.message);
        wasmTable.get(callback)(type, messagePtr, userdata);
        _free(messagePtr);
      };
    }

  function _wgpuInstanceCreateSurface(instanceId, descriptor) {
      assert(descriptor);
      assert(instanceId === 0, "WGPUInstance is ignored");
      var nextInChainPtr = HEAP32[((descriptor)>>2)];
      assert(nextInChainPtr !== 0);
      assert(4 ===
        HEAPU32[(((nextInChainPtr)+(4))>>2)]);
      var descriptorFromCanvasHTMLSelector = nextInChainPtr;
  
      assert(descriptorFromCanvasHTMLSelector);assert(HEAP32[((descriptorFromCanvasHTMLSelector)>>2)] === 0);
      var selectorPtr = HEAP32[(((descriptorFromCanvasHTMLSelector)+(8))>>2)];
      assert(selectorPtr);
      var canvas = findCanvasEventTarget(selectorPtr);
      assert(canvas instanceof HTMLCanvasElement);
  
      var labelPtr = HEAP32[(((descriptor)+(4))>>2)];
      if (labelPtr) canvas.surfaceLabelWebGPU = UTF8ToString(labelPtr);
  
      return WebGPU.mgrSurface.create(canvas);
    }

  function _wgpuInstanceRelease() {
      abort('No WGPUInstance object should exist (TODO).');
    }

  function _wgpuPipelineLayoutReference(id) {
    WebGPU.mgrPipelineLayout.reference(id);
  }

  function _wgpuPipelineLayoutRelease(id) {
    WebGPU.mgrPipelineLayout.release(id);
  }

  function _wgpuQuerySetRelease(id) {
    WebGPU.mgrQuerySet.release(id);
  }

  function _wgpuQueueReference(id) {
    WebGPU.mgrQueue.reference(id);
  }

  function _wgpuQueueRelease(id) {
    WebGPU.mgrQueue.release(id);
  }

  function _wgpuQueueSubmit(queueId, commandCount, commands) {
      assert(commands % 4 === 0);
      var queue = WebGPU.mgrQueue.get(queueId);
      var cmds = Array.from(HEAP32.subarray(commands >> 2, (commands >> 2) + commandCount),
        function(id) { return WebGPU.mgrCommandBuffer.get(id); });
      queue["submit"](cmds);
    }

  function _wgpuRenderPassEncoderDraw(passId, vertexCount, instanceCount, firstVertex, firstInstance) {
      var pass = WebGPU.mgrRenderPassEncoder.get(passId);
      pass["draw"](vertexCount, instanceCount, firstVertex, firstInstance);
    }

  function _wgpuRenderPassEncoderDrawIndexed(passId, indexCount, instanceCount, firstIndex, baseVertex, firstInstance) {
      var pass = WebGPU.mgrRenderPassEncoder.get(passId);
      pass["drawIndexed"](indexCount, instanceCount, firstIndex, baseVertex, firstInstance);
    }

  function _wgpuRenderPassEncoderDrawIndexedIndirect(passId, indirectBufferId, indirectOffset_low, indirectOffset_high) {
      
      var indirectBuffer = WebGPU.mgrBuffer.get(indirectBufferId);
      var indirectOffset = (assert(indirectOffset_high < 0x200000), indirectOffset_high * 0x100000000 + indirectOffset_low)
  ;
      var pass = WebGPU.mgrRenderPassEncoder.get(passId);
      pass["drawIndexedIndirect"](indirectBuffer, indirectOffset);
    }

  function _wgpuRenderPassEncoderDrawIndirect(passId, indirectBufferId, indirectOffset_low, indirectOffset_high) {
      
      var indirectBuffer = WebGPU.mgrBuffer.get(indirectBufferId);
      var indirectOffset = (assert(indirectOffset_high < 0x200000), indirectOffset_high * 0x100000000 + indirectOffset_low)
  ;
      var pass = WebGPU.mgrRenderPassEncoder.get(passId);
      pass["drawIndirect"](indirectBuffer, indirectOffset);
    }

  function _wgpuRenderPassEncoderEndPass(passId) {
      var pass = WebGPU.mgrRenderPassEncoder.get(passId);
      pass["endPass"]();
    }

  function _wgpuRenderPassEncoderReference(id) {
    WebGPU.mgrRenderPassEncoder.reference(id);
  }

  function _wgpuRenderPassEncoderRelease(id) {
    WebGPU.mgrRenderPassEncoder.release(id);
  }

  function _wgpuRenderPassEncoderSetBindGroup(passId, groupIndex, groupId, dynamicOffsetCount, dynamicOffsetsPtr) {
      var pass = WebGPU.mgrRenderPassEncoder.get(passId);
      var group = WebGPU.mgrBindGroup.get(groupId);
      if (dynamicOffsetCount == 0) {
        pass["setBindGroup"](groupIndex, group);
      } else {
        var offsets = [];
        for (var i = 0; i < dynamicOffsetCount; i++, dynamicOffsetsPtr += 4) {
          offsets.push(HEAPU32[((dynamicOffsetsPtr)>>2)]);
        }
        pass["setBindGroup"](groupIndex, group, offsets);
      }
    }

  function _wgpuRenderPassEncoderSetBlendConstant(passId, colorPtr) {
      var pass = WebGPU.mgrRenderPassEncoder.get(passId);
      var color = WebGPU.makeColor(colorPtr);
      pass["setBlendConstant"](color);
    }

  function _wgpuRenderPassEncoderSetIndexBuffer(passId, bufferId, format, offset_low, offset_high, size) {
      
      var offset = (assert(offset_high < 0x200000), offset_high * 0x100000000 + offset_low)
  ;
      var pass = WebGPU.mgrRenderPassEncoder.get(passId);
      var buffer = WebGPU.mgrBuffer.get(bufferId);
      pass["setIndexBuffer"](buffer, WebGPU.IndexFormat[format], offset, size);
    }

  function _wgpuRenderPassEncoderSetPipeline(passId, pipelineId) {
      var pass = WebGPU.mgrRenderPassEncoder.get(passId);
      var pipeline = WebGPU.mgrRenderPipeline.get(pipelineId);
      pass["setPipeline"](pipeline);
    }

  function _wgpuRenderPassEncoderSetScissorRect(passId, x, y, w, h) {
      var pass = WebGPU.mgrRenderPassEncoder.get(passId);
      pass["setScissorRect"](x, y, w, h);
    }

  function _wgpuRenderPassEncoderSetStencilReference(passId, reference) {
      var pass = WebGPU.mgrRenderPassEncoder.get(passId);
      pass["setStencilReference"](reference);
    }

  function _wgpuRenderPassEncoderSetVertexBuffer(passId, slot, bufferId, offset, size) {
      var pass = WebGPU.mgrRenderPassEncoder.get(passId);
      pass["setVertexBuffer"](slot, WebGPU.mgrBuffer.get(bufferId), offset, size);
    }

  function _wgpuRenderPassEncoderSetViewport(passId, x, y, w, h, minDepth, maxDepth) {
      var pass = WebGPU.mgrRenderPassEncoder.get(passId);
      pass["setViewport"](x, y, w, h, minDepth, maxDepth);
    }

  function _wgpuRenderPipelineRelease(id) {
    WebGPU.mgrRenderPipeline.release(id);
  }

  function _wgpuSamplerReference(id) {
    WebGPU.mgrSampler.reference(id);
  }

  function _wgpuSamplerRelease(id) {
    WebGPU.mgrSampler.release(id);
  }

  function _wgpuShaderModuleReference(id) {
    WebGPU.mgrShaderModule.reference(id);
  }

  function _wgpuShaderModuleRelease(id) {
    WebGPU.mgrShaderModule.release(id);
  }

  function _wgpuSurfaceRelease(id) {
    WebGPU.mgrSurface.release(id);
  }

  function _wgpuSwapChainGetCurrentTextureView(swapChainId) {
      var swapChain = WebGPU.mgrSwapChain.get(swapChainId);
      return WebGPU.mgrTextureView.create(swapChain["getCurrentTexture"]()["createView"]());
    }

  function _wgpuSwapChainRelease(id) {
    WebGPU.mgrSwapChain.release(id);
  }

  function _wgpuTextureCreateView(textureId, descriptor) {
      var desc;
      if (descriptor) {
        assert(descriptor);assert(HEAP32[((descriptor)>>2)] === 0);
        desc = {
          "format": WebGPU.TextureFormat[
            HEAPU32[(((descriptor)+(8))>>2)]],
          "dimension": WebGPU.TextureViewDimension[
            HEAPU32[(((descriptor)+(12))>>2)]],
          "baseMipLevel": HEAPU32[(((descriptor)+(16))>>2)],
          "mipLevelCount": HEAPU32[(((descriptor)+(20))>>2)],
          "baseArrayLayer": HEAPU32[(((descriptor)+(24))>>2)],
          "arrayLayerCount": HEAPU32[(((descriptor)+(28))>>2)],
          "aspect": WebGPU.TextureAspect[
            HEAPU32[(((descriptor)+(32))>>2)]],
        };
        var labelPtr = HEAP32[(((descriptor)+(4))>>2)];
        if (labelPtr) desc["label"] = UTF8ToString(labelPtr);
      }
  
      var texture = WebGPU.mgrTexture.get(textureId);
      return WebGPU.mgrTextureView.create(texture["createView"](desc));
    }

  function _wgpuTextureDestroy(textureId) { WebGPU.mgrTexture.get(textureId)["destroy"](); }

  function _wgpuTextureReference(id) {
    WebGPU.mgrTexture.reference(id);
  }

  function _wgpuTextureRelease(id) {
    WebGPU.mgrTexture.release(id);
  }

  function _wgpuTextureViewReference(id) {
    WebGPU.mgrTextureView.reference(id);
  }

  function _wgpuTextureViewRelease(id) {
    WebGPU.mgrTextureView.release(id);
  }
var FSNode = /** @constructor */ function(parent, name, mode, rdev) {
    if (!parent) {
      parent = this;  // root node sets parent to itself
    }
    this.parent = parent;
    this.mount = parent.mount;
    this.mounted = null;
    this.id = FS.nextInode++;
    this.name = name;
    this.mode = mode;
    this.node_ops = {};
    this.stream_ops = {};
    this.rdev = rdev;
  };
  var readMode = 292/*292*/ | 73/*73*/;
  var writeMode = 146/*146*/;
  Object.defineProperties(FSNode.prototype, {
   read: {
    get: /** @this{FSNode} */function() {
     return (this.mode & readMode) === readMode;
    },
    set: /** @this{FSNode} */function(val) {
     val ? this.mode |= readMode : this.mode &= ~readMode;
    }
   },
   write: {
    get: /** @this{FSNode} */function() {
     return (this.mode & writeMode) === writeMode;
    },
    set: /** @this{FSNode} */function(val) {
     val ? this.mode |= writeMode : this.mode &= ~writeMode;
    }
   },
   isFolder: {
    get: /** @this{FSNode} */function() {
     return FS.isDir(this.mode);
    }
   },
   isDevice: {
    get: /** @this{FSNode} */function() {
     return FS.isChrdev(this.mode);
    }
   }
  });
  FS.FSNode = FSNode;
  FS.staticInit();;
Module["requestFullscreen"] = function Module_requestFullscreen(lockPointer, resizeCanvas) { Browser.requestFullscreen(lockPointer, resizeCanvas) };
  Module["requestFullScreen"] = function Module_requestFullScreen() { Browser.requestFullScreen() };
  Module["requestAnimationFrame"] = function Module_requestAnimationFrame(func) { Browser.requestAnimationFrame(func) };
  Module["setCanvasSize"] = function Module_setCanvasSize(width, height, noUpdates) { Browser.setCanvasSize(width, height, noUpdates) };
  Module["pauseMainLoop"] = function Module_pauseMainLoop() { Browser.mainLoop.pause() };
  Module["resumeMainLoop"] = function Module_resumeMainLoop() { Browser.mainLoop.resume() };
  Module["getUserMedia"] = function Module_getUserMedia() { Browser.getUserMedia() }
  Module["createContext"] = function Module_createContext(canvas, useWebGL, setInModule, webGLContextAttributes) { return Browser.createContext(canvas, useWebGL, setInModule, webGLContextAttributes) };
WebGPU.initManagers();;
var ASSERTIONS = true;



/** @type {function(string, boolean=, number=)} */
function intArrayFromString(stringy, dontAddNull, length) {
  var len = length > 0 ? length : lengthBytesUTF8(stringy)+1;
  var u8array = new Array(len);
  var numBytesWritten = stringToUTF8Array(stringy, u8array, 0, u8array.length);
  if (dontAddNull) u8array.length = numBytesWritten;
  return u8array;
}

function intArrayToString(array) {
  var ret = [];
  for (var i = 0; i < array.length; i++) {
    var chr = array[i];
    if (chr > 0xFF) {
      if (ASSERTIONS) {
        assert(false, 'Character code ' + chr + ' (' + String.fromCharCode(chr) + ')  at offset ' + i + ' not in 0x00-0xFF.');
      }
      chr &= 0xFF;
    }
    ret.push(String.fromCharCode(chr));
  }
  return ret.join('');
}


var asmLibraryArg = {
  "__assert_fail": ___assert_fail,
  "__cxa_atexit": ___cxa_atexit,
  "__sys_fcntl64": ___sys_fcntl64,
  "__sys_ioctl": ___sys_ioctl,
  "__sys_open": ___sys_open,
  "abort": _abort,
  "emscripten_asm_const_int": _emscripten_asm_const_int,
  "emscripten_get_now": _emscripten_get_now,
  "emscripten_log": _emscripten_log,
  "emscripten_memcpy_big": _emscripten_memcpy_big,
  "emscripten_request_fullscreen_strategy": _emscripten_request_fullscreen_strategy,
  "emscripten_resize_heap": _emscripten_resize_heap,
  "emscripten_set_focus_callback_on_thread": _emscripten_set_focus_callback_on_thread,
  "emscripten_set_focusin_callback_on_thread": _emscripten_set_focusin_callback_on_thread,
  "emscripten_set_focusout_callback_on_thread": _emscripten_set_focusout_callback_on_thread,
  "emscripten_set_keydown_callback_on_thread": _emscripten_set_keydown_callback_on_thread,
  "emscripten_set_keypress_callback_on_thread": _emscripten_set_keypress_callback_on_thread,
  "emscripten_set_keyup_callback_on_thread": _emscripten_set_keyup_callback_on_thread,
  "emscripten_set_main_loop": _emscripten_set_main_loop,
  "emscripten_set_mousedown_callback_on_thread": _emscripten_set_mousedown_callback_on_thread,
  "emscripten_set_mousemove_callback_on_thread": _emscripten_set_mousemove_callback_on_thread,
  "emscripten_set_mouseup_callback_on_thread": _emscripten_set_mouseup_callback_on_thread,
  "emscripten_set_resize_callback_on_thread": _emscripten_set_resize_callback_on_thread,
  "emscripten_set_wheel_callback_on_thread": _emscripten_set_wheel_callback_on_thread,
  "emscripten_webgpu_get_device": _emscripten_webgpu_get_device,
  "fd_close": _fd_close,
  "fd_read": _fd_read,
  "fd_seek": _fd_seek,
  "fd_write": _fd_write,
  "setTempRet0": _setTempRet0,
  "system": _system,
  "time": _time,
  "wgpuBindGroupLayoutReference": _wgpuBindGroupLayoutReference,
  "wgpuBindGroupLayoutRelease": _wgpuBindGroupLayoutRelease,
  "wgpuBindGroupRelease": _wgpuBindGroupRelease,
  "wgpuBufferDestroy": _wgpuBufferDestroy,
  "wgpuBufferGetConstMappedRange": _wgpuBufferGetConstMappedRange,
  "wgpuBufferGetMappedRange": _wgpuBufferGetMappedRange,
  "wgpuBufferMapAsync": _wgpuBufferMapAsync,
  "wgpuBufferReference": _wgpuBufferReference,
  "wgpuBufferRelease": _wgpuBufferRelease,
  "wgpuBufferUnmap": _wgpuBufferUnmap,
  "wgpuCommandBufferRelease": _wgpuCommandBufferRelease,
  "wgpuCommandEncoderBeginComputePass": _wgpuCommandEncoderBeginComputePass,
  "wgpuCommandEncoderBeginRenderPass": _wgpuCommandEncoderBeginRenderPass,
  "wgpuCommandEncoderCopyBufferToBuffer": _wgpuCommandEncoderCopyBufferToBuffer,
  "wgpuCommandEncoderCopyBufferToTexture": _wgpuCommandEncoderCopyBufferToTexture,
  "wgpuCommandEncoderCopyTextureToBuffer": _wgpuCommandEncoderCopyTextureToBuffer,
  "wgpuCommandEncoderCopyTextureToTexture": _wgpuCommandEncoderCopyTextureToTexture,
  "wgpuCommandEncoderFinish": _wgpuCommandEncoderFinish,
  "wgpuCommandEncoderReference": _wgpuCommandEncoderReference,
  "wgpuCommandEncoderRelease": _wgpuCommandEncoderRelease,
  "wgpuComputePassEncoderDispatch": _wgpuComputePassEncoderDispatch,
  "wgpuComputePassEncoderDispatchIndirect": _wgpuComputePassEncoderDispatchIndirect,
  "wgpuComputePassEncoderEndPass": _wgpuComputePassEncoderEndPass,
  "wgpuComputePassEncoderRelease": _wgpuComputePassEncoderRelease,
  "wgpuComputePassEncoderSetBindGroup": _wgpuComputePassEncoderSetBindGroup,
  "wgpuComputePassEncoderSetPipeline": _wgpuComputePassEncoderSetPipeline,
  "wgpuComputePipelineRelease": _wgpuComputePipelineRelease,
  "wgpuDeviceCreateBindGroup": _wgpuDeviceCreateBindGroup,
  "wgpuDeviceCreateBindGroupLayout": _wgpuDeviceCreateBindGroupLayout,
  "wgpuDeviceCreateBuffer": _wgpuDeviceCreateBuffer,
  "wgpuDeviceCreateCommandEncoder": _wgpuDeviceCreateCommandEncoder,
  "wgpuDeviceCreateComputePipeline": _wgpuDeviceCreateComputePipeline,
  "wgpuDeviceCreatePipelineLayout": _wgpuDeviceCreatePipelineLayout,
  "wgpuDeviceCreateRenderPipeline2": _wgpuDeviceCreateRenderPipeline2,
  "wgpuDeviceCreateSampler": _wgpuDeviceCreateSampler,
  "wgpuDeviceCreateShaderModule": _wgpuDeviceCreateShaderModule,
  "wgpuDeviceCreateSwapChain": _wgpuDeviceCreateSwapChain,
  "wgpuDeviceCreateTexture": _wgpuDeviceCreateTexture,
  "wgpuDeviceGetQueue": _wgpuDeviceGetQueue,
  "wgpuDeviceReference": _wgpuDeviceReference,
  "wgpuDeviceRelease": _wgpuDeviceRelease,
  "wgpuDeviceSetUncapturedErrorCallback": _wgpuDeviceSetUncapturedErrorCallback,
  "wgpuInstanceCreateSurface": _wgpuInstanceCreateSurface,
  "wgpuInstanceRelease": _wgpuInstanceRelease,
  "wgpuPipelineLayoutReference": _wgpuPipelineLayoutReference,
  "wgpuPipelineLayoutRelease": _wgpuPipelineLayoutRelease,
  "wgpuQuerySetRelease": _wgpuQuerySetRelease,
  "wgpuQueueReference": _wgpuQueueReference,
  "wgpuQueueRelease": _wgpuQueueRelease,
  "wgpuQueueSubmit": _wgpuQueueSubmit,
  "wgpuRenderPassEncoderDraw": _wgpuRenderPassEncoderDraw,
  "wgpuRenderPassEncoderDrawIndexed": _wgpuRenderPassEncoderDrawIndexed,
  "wgpuRenderPassEncoderDrawIndexedIndirect": _wgpuRenderPassEncoderDrawIndexedIndirect,
  "wgpuRenderPassEncoderDrawIndirect": _wgpuRenderPassEncoderDrawIndirect,
  "wgpuRenderPassEncoderEndPass": _wgpuRenderPassEncoderEndPass,
  "wgpuRenderPassEncoderReference": _wgpuRenderPassEncoderReference,
  "wgpuRenderPassEncoderRelease": _wgpuRenderPassEncoderRelease,
  "wgpuRenderPassEncoderSetBindGroup": _wgpuRenderPassEncoderSetBindGroup,
  "wgpuRenderPassEncoderSetBlendConstant": _wgpuRenderPassEncoderSetBlendConstant,
  "wgpuRenderPassEncoderSetIndexBuffer": _wgpuRenderPassEncoderSetIndexBuffer,
  "wgpuRenderPassEncoderSetPipeline": _wgpuRenderPassEncoderSetPipeline,
  "wgpuRenderPassEncoderSetScissorRect": _wgpuRenderPassEncoderSetScissorRect,
  "wgpuRenderPassEncoderSetStencilReference": _wgpuRenderPassEncoderSetStencilReference,
  "wgpuRenderPassEncoderSetVertexBuffer": _wgpuRenderPassEncoderSetVertexBuffer,
  "wgpuRenderPassEncoderSetViewport": _wgpuRenderPassEncoderSetViewport,
  "wgpuRenderPipelineRelease": _wgpuRenderPipelineRelease,
  "wgpuSamplerReference": _wgpuSamplerReference,
  "wgpuSamplerRelease": _wgpuSamplerRelease,
  "wgpuShaderModuleReference": _wgpuShaderModuleReference,
  "wgpuShaderModuleRelease": _wgpuShaderModuleRelease,
  "wgpuSurfaceRelease": _wgpuSurfaceRelease,
  "wgpuSwapChainGetCurrentTextureView": _wgpuSwapChainGetCurrentTextureView,
  "wgpuSwapChainRelease": _wgpuSwapChainRelease,
  "wgpuTextureCreateView": _wgpuTextureCreateView,
  "wgpuTextureDestroy": _wgpuTextureDestroy,
  "wgpuTextureReference": _wgpuTextureReference,
  "wgpuTextureRelease": _wgpuTextureRelease,
  "wgpuTextureViewReference": _wgpuTextureViewReference,
  "wgpuTextureViewRelease": _wgpuTextureViewRelease
};
var asm = createWasm();
/** @type {function(...*):?} */
var ___wasm_call_ctors = Module["___wasm_call_ctors"] = createExportWrapper("__wasm_call_ctors");

/** @type {function(...*):?} */
var _fflush = Module["_fflush"] = createExportWrapper("fflush");

/** @type {function(...*):?} */
var _malloc = Module["_malloc"] = createExportWrapper("malloc");

/** @type {function(...*):?} */
var _free = Module["_free"] = createExportWrapper("free");

/** @type {function(...*):?} */
var _main = Module["_main"] = createExportWrapper("main");

/** @type {function(...*):?} */
var ___errno_location = Module["___errno_location"] = createExportWrapper("__errno_location");

/** @type {function(...*):?} */
var stackSave = Module["stackSave"] = createExportWrapper("stackSave");

/** @type {function(...*):?} */
var stackRestore = Module["stackRestore"] = createExportWrapper("stackRestore");

/** @type {function(...*):?} */
var stackAlloc = Module["stackAlloc"] = createExportWrapper("stackAlloc");

/** @type {function(...*):?} */
var _emscripten_stack_init = Module["_emscripten_stack_init"] = function() {
  return (_emscripten_stack_init = Module["_emscripten_stack_init"] = Module["asm"]["emscripten_stack_init"]).apply(null, arguments);
};

/** @type {function(...*):?} */
var _emscripten_stack_get_free = Module["_emscripten_stack_get_free"] = function() {
  return (_emscripten_stack_get_free = Module["_emscripten_stack_get_free"] = Module["asm"]["emscripten_stack_get_free"]).apply(null, arguments);
};

/** @type {function(...*):?} */
var _emscripten_stack_get_end = Module["_emscripten_stack_get_end"] = function() {
  return (_emscripten_stack_get_end = Module["_emscripten_stack_get_end"] = Module["asm"]["emscripten_stack_get_end"]).apply(null, arguments);
};

/** @type {function(...*):?} */
var dynCall_jiji = Module["dynCall_jiji"] = createExportWrapper("dynCall_jiji");

/** @type {function(...*):?} */
var dynCall_iij = Module["dynCall_iij"] = createExportWrapper("dynCall_iij");

/** @type {function(...*):?} */
var dynCall_iijii = Module["dynCall_iijii"] = createExportWrapper("dynCall_iijii");

/** @type {function(...*):?} */
var dynCall_vijii = Module["dynCall_vijii"] = createExportWrapper("dynCall_vijii");

/** @type {function(...*):?} */
var dynCall_iiiiji = Module["dynCall_iiiiji"] = createExportWrapper("dynCall_iiiiji");





// === Auto-generated postamble setup entry stuff ===

if (!Object.getOwnPropertyDescriptor(Module, "intArrayFromString")) Module["intArrayFromString"] = function() { abort("'intArrayFromString' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "intArrayToString")) Module["intArrayToString"] = function() { abort("'intArrayToString' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "ccall")) Module["ccall"] = function() { abort("'ccall' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "cwrap")) Module["cwrap"] = function() { abort("'cwrap' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "setValue")) Module["setValue"] = function() { abort("'setValue' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "getValue")) Module["getValue"] = function() { abort("'getValue' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "allocate")) Module["allocate"] = function() { abort("'allocate' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "UTF8ArrayToString")) Module["UTF8ArrayToString"] = function() { abort("'UTF8ArrayToString' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "UTF8ToString")) Module["UTF8ToString"] = function() { abort("'UTF8ToString' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "stringToUTF8Array")) Module["stringToUTF8Array"] = function() { abort("'stringToUTF8Array' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "stringToUTF8")) Module["stringToUTF8"] = function() { abort("'stringToUTF8' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "lengthBytesUTF8")) Module["lengthBytesUTF8"] = function() { abort("'lengthBytesUTF8' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "stackTrace")) Module["stackTrace"] = function() { abort("'stackTrace' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "addOnPreRun")) Module["addOnPreRun"] = function() { abort("'addOnPreRun' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "addOnInit")) Module["addOnInit"] = function() { abort("'addOnInit' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "addOnPreMain")) Module["addOnPreMain"] = function() { abort("'addOnPreMain' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "addOnExit")) Module["addOnExit"] = function() { abort("'addOnExit' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "addOnPostRun")) Module["addOnPostRun"] = function() { abort("'addOnPostRun' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "writeStringToMemory")) Module["writeStringToMemory"] = function() { abort("'writeStringToMemory' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "writeArrayToMemory")) Module["writeArrayToMemory"] = function() { abort("'writeArrayToMemory' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "writeAsciiToMemory")) Module["writeAsciiToMemory"] = function() { abort("'writeAsciiToMemory' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "addRunDependency")) Module["addRunDependency"] = function() { abort("'addRunDependency' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ). Alternatively, forcing filesystem support (-s FORCE_FILESYSTEM=1) can export this for you") };
if (!Object.getOwnPropertyDescriptor(Module, "removeRunDependency")) Module["removeRunDependency"] = function() { abort("'removeRunDependency' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ). Alternatively, forcing filesystem support (-s FORCE_FILESYSTEM=1) can export this for you") };
if (!Object.getOwnPropertyDescriptor(Module, "FS_createFolder")) Module["FS_createFolder"] = function() { abort("'FS_createFolder' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "FS_createPath")) Module["FS_createPath"] = function() { abort("'FS_createPath' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ). Alternatively, forcing filesystem support (-s FORCE_FILESYSTEM=1) can export this for you") };
if (!Object.getOwnPropertyDescriptor(Module, "FS_createDataFile")) Module["FS_createDataFile"] = function() { abort("'FS_createDataFile' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ). Alternatively, forcing filesystem support (-s FORCE_FILESYSTEM=1) can export this for you") };
if (!Object.getOwnPropertyDescriptor(Module, "FS_createPreloadedFile")) Module["FS_createPreloadedFile"] = function() { abort("'FS_createPreloadedFile' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ). Alternatively, forcing filesystem support (-s FORCE_FILESYSTEM=1) can export this for you") };
if (!Object.getOwnPropertyDescriptor(Module, "FS_createLazyFile")) Module["FS_createLazyFile"] = function() { abort("'FS_createLazyFile' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ). Alternatively, forcing filesystem support (-s FORCE_FILESYSTEM=1) can export this for you") };
if (!Object.getOwnPropertyDescriptor(Module, "FS_createLink")) Module["FS_createLink"] = function() { abort("'FS_createLink' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "FS_createDevice")) Module["FS_createDevice"] = function() { abort("'FS_createDevice' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ). Alternatively, forcing filesystem support (-s FORCE_FILESYSTEM=1) can export this for you") };
if (!Object.getOwnPropertyDescriptor(Module, "FS_unlink")) Module["FS_unlink"] = function() { abort("'FS_unlink' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ). Alternatively, forcing filesystem support (-s FORCE_FILESYSTEM=1) can export this for you") };
if (!Object.getOwnPropertyDescriptor(Module, "getLEB")) Module["getLEB"] = function() { abort("'getLEB' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "getFunctionTables")) Module["getFunctionTables"] = function() { abort("'getFunctionTables' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "alignFunctionTables")) Module["alignFunctionTables"] = function() { abort("'alignFunctionTables' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "registerFunctions")) Module["registerFunctions"] = function() { abort("'registerFunctions' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "addFunction")) Module["addFunction"] = function() { abort("'addFunction' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "removeFunction")) Module["removeFunction"] = function() { abort("'removeFunction' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "getFuncWrapper")) Module["getFuncWrapper"] = function() { abort("'getFuncWrapper' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "prettyPrint")) Module["prettyPrint"] = function() { abort("'prettyPrint' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "dynCall")) Module["dynCall"] = function() { abort("'dynCall' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "getCompilerSetting")) Module["getCompilerSetting"] = function() { abort("'getCompilerSetting' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "print")) Module["print"] = function() { abort("'print' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "printErr")) Module["printErr"] = function() { abort("'printErr' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "getTempRet0")) Module["getTempRet0"] = function() { abort("'getTempRet0' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "setTempRet0")) Module["setTempRet0"] = function() { abort("'setTempRet0' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "callMain")) Module["callMain"] = function() { abort("'callMain' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "abort")) Module["abort"] = function() { abort("'abort' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "stringToNewUTF8")) Module["stringToNewUTF8"] = function() { abort("'stringToNewUTF8' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "setFileTime")) Module["setFileTime"] = function() { abort("'setFileTime' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "emscripten_realloc_buffer")) Module["emscripten_realloc_buffer"] = function() { abort("'emscripten_realloc_buffer' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "ENV")) Module["ENV"] = function() { abort("'ENV' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "ERRNO_CODES")) Module["ERRNO_CODES"] = function() { abort("'ERRNO_CODES' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "ERRNO_MESSAGES")) Module["ERRNO_MESSAGES"] = function() { abort("'ERRNO_MESSAGES' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "setErrNo")) Module["setErrNo"] = function() { abort("'setErrNo' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "inetPton4")) Module["inetPton4"] = function() { abort("'inetPton4' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "inetNtop4")) Module["inetNtop4"] = function() { abort("'inetNtop4' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "inetPton6")) Module["inetPton6"] = function() { abort("'inetPton6' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "inetNtop6")) Module["inetNtop6"] = function() { abort("'inetNtop6' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "readSockaddr")) Module["readSockaddr"] = function() { abort("'readSockaddr' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "writeSockaddr")) Module["writeSockaddr"] = function() { abort("'writeSockaddr' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "DNS")) Module["DNS"] = function() { abort("'DNS' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "getHostByName")) Module["getHostByName"] = function() { abort("'getHostByName' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "GAI_ERRNO_MESSAGES")) Module["GAI_ERRNO_MESSAGES"] = function() { abort("'GAI_ERRNO_MESSAGES' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "Protocols")) Module["Protocols"] = function() { abort("'Protocols' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "Sockets")) Module["Sockets"] = function() { abort("'Sockets' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "getRandomDevice")) Module["getRandomDevice"] = function() { abort("'getRandomDevice' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "traverseStack")) Module["traverseStack"] = function() { abort("'traverseStack' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "UNWIND_CACHE")) Module["UNWIND_CACHE"] = function() { abort("'UNWIND_CACHE' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "withBuiltinMalloc")) Module["withBuiltinMalloc"] = function() { abort("'withBuiltinMalloc' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "readAsmConstArgsArray")) Module["readAsmConstArgsArray"] = function() { abort("'readAsmConstArgsArray' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "readAsmConstArgs")) Module["readAsmConstArgs"] = function() { abort("'readAsmConstArgs' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "mainThreadEM_ASM")) Module["mainThreadEM_ASM"] = function() { abort("'mainThreadEM_ASM' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "jstoi_q")) Module["jstoi_q"] = function() { abort("'jstoi_q' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "jstoi_s")) Module["jstoi_s"] = function() { abort("'jstoi_s' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "getExecutableName")) Module["getExecutableName"] = function() { abort("'getExecutableName' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "listenOnce")) Module["listenOnce"] = function() { abort("'listenOnce' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "autoResumeAudioContext")) Module["autoResumeAudioContext"] = function() { abort("'autoResumeAudioContext' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "dynCallLegacy")) Module["dynCallLegacy"] = function() { abort("'dynCallLegacy' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "getDynCaller")) Module["getDynCaller"] = function() { abort("'getDynCaller' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "dynCall")) Module["dynCall"] = function() { abort("'dynCall' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "callRuntimeCallbacks")) Module["callRuntimeCallbacks"] = function() { abort("'callRuntimeCallbacks' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "runtimeKeepaliveCounter")) Module["runtimeKeepaliveCounter"] = function() { abort("'runtimeKeepaliveCounter' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "keepRuntimeAlive")) Module["keepRuntimeAlive"] = function() { abort("'keepRuntimeAlive' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "runtimeKeepalivePush")) Module["runtimeKeepalivePush"] = function() { abort("'runtimeKeepalivePush' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "runtimeKeepalivePop")) Module["runtimeKeepalivePop"] = function() { abort("'runtimeKeepalivePop' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "callUserCallback")) Module["callUserCallback"] = function() { abort("'callUserCallback' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "maybeExit")) Module["maybeExit"] = function() { abort("'maybeExit' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "asmjsMangle")) Module["asmjsMangle"] = function() { abort("'asmjsMangle' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "reallyNegative")) Module["reallyNegative"] = function() { abort("'reallyNegative' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "unSign")) Module["unSign"] = function() { abort("'unSign' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "reSign")) Module["reSign"] = function() { abort("'reSign' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "formatString")) Module["formatString"] = function() { abort("'formatString' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "PATH")) Module["PATH"] = function() { abort("'PATH' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "PATH_FS")) Module["PATH_FS"] = function() { abort("'PATH_FS' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "SYSCALLS")) Module["SYSCALLS"] = function() { abort("'SYSCALLS' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "syscallMmap2")) Module["syscallMmap2"] = function() { abort("'syscallMmap2' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "syscallMunmap")) Module["syscallMunmap"] = function() { abort("'syscallMunmap' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "getSocketFromFD")) Module["getSocketFromFD"] = function() { abort("'getSocketFromFD' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "getSocketAddress")) Module["getSocketAddress"] = function() { abort("'getSocketAddress' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "JSEvents")) Module["JSEvents"] = function() { abort("'JSEvents' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "registerKeyEventCallback")) Module["registerKeyEventCallback"] = function() { abort("'registerKeyEventCallback' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "specialHTMLTargets")) Module["specialHTMLTargets"] = function() { abort("'specialHTMLTargets' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "maybeCStringToJsString")) Module["maybeCStringToJsString"] = function() { abort("'maybeCStringToJsString' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "findEventTarget")) Module["findEventTarget"] = function() { abort("'findEventTarget' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "findCanvasEventTarget")) Module["findCanvasEventTarget"] = function() { abort("'findCanvasEventTarget' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "getBoundingClientRect")) Module["getBoundingClientRect"] = function() { abort("'getBoundingClientRect' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "fillMouseEventData")) Module["fillMouseEventData"] = function() { abort("'fillMouseEventData' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "registerMouseEventCallback")) Module["registerMouseEventCallback"] = function() { abort("'registerMouseEventCallback' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "registerWheelEventCallback")) Module["registerWheelEventCallback"] = function() { abort("'registerWheelEventCallback' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "registerUiEventCallback")) Module["registerUiEventCallback"] = function() { abort("'registerUiEventCallback' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "registerFocusEventCallback")) Module["registerFocusEventCallback"] = function() { abort("'registerFocusEventCallback' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "fillDeviceOrientationEventData")) Module["fillDeviceOrientationEventData"] = function() { abort("'fillDeviceOrientationEventData' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "registerDeviceOrientationEventCallback")) Module["registerDeviceOrientationEventCallback"] = function() { abort("'registerDeviceOrientationEventCallback' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "fillDeviceMotionEventData")) Module["fillDeviceMotionEventData"] = function() { abort("'fillDeviceMotionEventData' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "registerDeviceMotionEventCallback")) Module["registerDeviceMotionEventCallback"] = function() { abort("'registerDeviceMotionEventCallback' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "screenOrientation")) Module["screenOrientation"] = function() { abort("'screenOrientation' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "fillOrientationChangeEventData")) Module["fillOrientationChangeEventData"] = function() { abort("'fillOrientationChangeEventData' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "registerOrientationChangeEventCallback")) Module["registerOrientationChangeEventCallback"] = function() { abort("'registerOrientationChangeEventCallback' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "fillFullscreenChangeEventData")) Module["fillFullscreenChangeEventData"] = function() { abort("'fillFullscreenChangeEventData' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "registerFullscreenChangeEventCallback")) Module["registerFullscreenChangeEventCallback"] = function() { abort("'registerFullscreenChangeEventCallback' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "registerRestoreOldStyle")) Module["registerRestoreOldStyle"] = function() { abort("'registerRestoreOldStyle' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "hideEverythingExceptGivenElement")) Module["hideEverythingExceptGivenElement"] = function() { abort("'hideEverythingExceptGivenElement' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "restoreHiddenElements")) Module["restoreHiddenElements"] = function() { abort("'restoreHiddenElements' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "setLetterbox")) Module["setLetterbox"] = function() { abort("'setLetterbox' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "currentFullscreenStrategy")) Module["currentFullscreenStrategy"] = function() { abort("'currentFullscreenStrategy' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "restoreOldWindowedStyle")) Module["restoreOldWindowedStyle"] = function() { abort("'restoreOldWindowedStyle' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "softFullscreenResizeWebGLRenderTarget")) Module["softFullscreenResizeWebGLRenderTarget"] = function() { abort("'softFullscreenResizeWebGLRenderTarget' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "doRequestFullscreen")) Module["doRequestFullscreen"] = function() { abort("'doRequestFullscreen' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "fillPointerlockChangeEventData")) Module["fillPointerlockChangeEventData"] = function() { abort("'fillPointerlockChangeEventData' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "registerPointerlockChangeEventCallback")) Module["registerPointerlockChangeEventCallback"] = function() { abort("'registerPointerlockChangeEventCallback' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "registerPointerlockErrorEventCallback")) Module["registerPointerlockErrorEventCallback"] = function() { abort("'registerPointerlockErrorEventCallback' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "requestPointerLock")) Module["requestPointerLock"] = function() { abort("'requestPointerLock' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "fillVisibilityChangeEventData")) Module["fillVisibilityChangeEventData"] = function() { abort("'fillVisibilityChangeEventData' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "registerVisibilityChangeEventCallback")) Module["registerVisibilityChangeEventCallback"] = function() { abort("'registerVisibilityChangeEventCallback' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "registerTouchEventCallback")) Module["registerTouchEventCallback"] = function() { abort("'registerTouchEventCallback' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "fillGamepadEventData")) Module["fillGamepadEventData"] = function() { abort("'fillGamepadEventData' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "registerGamepadEventCallback")) Module["registerGamepadEventCallback"] = function() { abort("'registerGamepadEventCallback' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "registerBeforeUnloadEventCallback")) Module["registerBeforeUnloadEventCallback"] = function() { abort("'registerBeforeUnloadEventCallback' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "fillBatteryEventData")) Module["fillBatteryEventData"] = function() { abort("'fillBatteryEventData' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "battery")) Module["battery"] = function() { abort("'battery' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "registerBatteryEventCallback")) Module["registerBatteryEventCallback"] = function() { abort("'registerBatteryEventCallback' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "setCanvasElementSize")) Module["setCanvasElementSize"] = function() { abort("'setCanvasElementSize' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "getCanvasElementSize")) Module["getCanvasElementSize"] = function() { abort("'getCanvasElementSize' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "polyfillSetImmediate")) Module["polyfillSetImmediate"] = function() { abort("'polyfillSetImmediate' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "demangle")) Module["demangle"] = function() { abort("'demangle' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "demangleAll")) Module["demangleAll"] = function() { abort("'demangleAll' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "jsStackTrace")) Module["jsStackTrace"] = function() { abort("'jsStackTrace' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "stackTrace")) Module["stackTrace"] = function() { abort("'stackTrace' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "getEnvStrings")) Module["getEnvStrings"] = function() { abort("'getEnvStrings' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "checkWasiClock")) Module["checkWasiClock"] = function() { abort("'checkWasiClock' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "writeI53ToI64")) Module["writeI53ToI64"] = function() { abort("'writeI53ToI64' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "writeI53ToI64Clamped")) Module["writeI53ToI64Clamped"] = function() { abort("'writeI53ToI64Clamped' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "writeI53ToI64Signaling")) Module["writeI53ToI64Signaling"] = function() { abort("'writeI53ToI64Signaling' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "writeI53ToU64Clamped")) Module["writeI53ToU64Clamped"] = function() { abort("'writeI53ToU64Clamped' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "writeI53ToU64Signaling")) Module["writeI53ToU64Signaling"] = function() { abort("'writeI53ToU64Signaling' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "readI53FromI64")) Module["readI53FromI64"] = function() { abort("'readI53FromI64' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "readI53FromU64")) Module["readI53FromU64"] = function() { abort("'readI53FromU64' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "convertI32PairToI53")) Module["convertI32PairToI53"] = function() { abort("'convertI32PairToI53' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "convertU32PairToI53")) Module["convertU32PairToI53"] = function() { abort("'convertU32PairToI53' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "uncaughtExceptionCount")) Module["uncaughtExceptionCount"] = function() { abort("'uncaughtExceptionCount' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "exceptionLast")) Module["exceptionLast"] = function() { abort("'exceptionLast' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "exceptionCaught")) Module["exceptionCaught"] = function() { abort("'exceptionCaught' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "ExceptionInfoAttrs")) Module["ExceptionInfoAttrs"] = function() { abort("'ExceptionInfoAttrs' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "ExceptionInfo")) Module["ExceptionInfo"] = function() { abort("'ExceptionInfo' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "CatchInfo")) Module["CatchInfo"] = function() { abort("'CatchInfo' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "exception_addRef")) Module["exception_addRef"] = function() { abort("'exception_addRef' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "exception_decRef")) Module["exception_decRef"] = function() { abort("'exception_decRef' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "Browser")) Module["Browser"] = function() { abort("'Browser' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "funcWrappers")) Module["funcWrappers"] = function() { abort("'funcWrappers' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "getFuncWrapper")) Module["getFuncWrapper"] = function() { abort("'getFuncWrapper' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "setMainLoop")) Module["setMainLoop"] = function() { abort("'setMainLoop' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "FS")) Module["FS"] = function() { abort("'FS' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "mmapAlloc")) Module["mmapAlloc"] = function() { abort("'mmapAlloc' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "MEMFS")) Module["MEMFS"] = function() { abort("'MEMFS' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "TTY")) Module["TTY"] = function() { abort("'TTY' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "PIPEFS")) Module["PIPEFS"] = function() { abort("'PIPEFS' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "SOCKFS")) Module["SOCKFS"] = function() { abort("'SOCKFS' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "_setNetworkCallback")) Module["_setNetworkCallback"] = function() { abort("'_setNetworkCallback' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "tempFixedLengthArray")) Module["tempFixedLengthArray"] = function() { abort("'tempFixedLengthArray' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "miniTempWebGLFloatBuffers")) Module["miniTempWebGLFloatBuffers"] = function() { abort("'miniTempWebGLFloatBuffers' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "heapObjectForWebGLType")) Module["heapObjectForWebGLType"] = function() { abort("'heapObjectForWebGLType' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "heapAccessShiftForWebGLHeap")) Module["heapAccessShiftForWebGLHeap"] = function() { abort("'heapAccessShiftForWebGLHeap' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "GL")) Module["GL"] = function() { abort("'GL' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "emscriptenWebGLGet")) Module["emscriptenWebGLGet"] = function() { abort("'emscriptenWebGLGet' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "computeUnpackAlignedImageSize")) Module["computeUnpackAlignedImageSize"] = function() { abort("'computeUnpackAlignedImageSize' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "emscriptenWebGLGetTexPixelData")) Module["emscriptenWebGLGetTexPixelData"] = function() { abort("'emscriptenWebGLGetTexPixelData' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "emscriptenWebGLGetUniform")) Module["emscriptenWebGLGetUniform"] = function() { abort("'emscriptenWebGLGetUniform' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "webglGetUniformLocation")) Module["webglGetUniformLocation"] = function() { abort("'webglGetUniformLocation' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "emscriptenWebGLGetVertexAttrib")) Module["emscriptenWebGLGetVertexAttrib"] = function() { abort("'emscriptenWebGLGetVertexAttrib' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "writeGLArray")) Module["writeGLArray"] = function() { abort("'writeGLArray' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "AL")) Module["AL"] = function() { abort("'AL' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "SDL_unicode")) Module["SDL_unicode"] = function() { abort("'SDL_unicode' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "SDL_ttfContext")) Module["SDL_ttfContext"] = function() { abort("'SDL_ttfContext' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "SDL_audio")) Module["SDL_audio"] = function() { abort("'SDL_audio' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "SDL")) Module["SDL"] = function() { abort("'SDL' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "SDL_gfx")) Module["SDL_gfx"] = function() { abort("'SDL_gfx' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "GLUT")) Module["GLUT"] = function() { abort("'GLUT' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "EGL")) Module["EGL"] = function() { abort("'EGL' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "GLFW_Window")) Module["GLFW_Window"] = function() { abort("'GLFW_Window' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "GLFW")) Module["GLFW"] = function() { abort("'GLFW' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "GLEW")) Module["GLEW"] = function() { abort("'GLEW' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "IDBStore")) Module["IDBStore"] = function() { abort("'IDBStore' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "runAndAbortIfError")) Module["runAndAbortIfError"] = function() { abort("'runAndAbortIfError' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "emscriptenWebGLGetIndexed")) Module["emscriptenWebGLGetIndexed"] = function() { abort("'emscriptenWebGLGetIndexed' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "WebGPU")) Module["WebGPU"] = function() { abort("'WebGPU' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "warnOnce")) Module["warnOnce"] = function() { abort("'warnOnce' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "stackSave")) Module["stackSave"] = function() { abort("'stackSave' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "stackRestore")) Module["stackRestore"] = function() { abort("'stackRestore' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "stackAlloc")) Module["stackAlloc"] = function() { abort("'stackAlloc' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "AsciiToString")) Module["AsciiToString"] = function() { abort("'AsciiToString' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "stringToAscii")) Module["stringToAscii"] = function() { abort("'stringToAscii' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "UTF16ToString")) Module["UTF16ToString"] = function() { abort("'UTF16ToString' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "stringToUTF16")) Module["stringToUTF16"] = function() { abort("'stringToUTF16' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "lengthBytesUTF16")) Module["lengthBytesUTF16"] = function() { abort("'lengthBytesUTF16' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "UTF32ToString")) Module["UTF32ToString"] = function() { abort("'UTF32ToString' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "stringToUTF32")) Module["stringToUTF32"] = function() { abort("'stringToUTF32' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "lengthBytesUTF32")) Module["lengthBytesUTF32"] = function() { abort("'lengthBytesUTF32' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "allocateUTF8")) Module["allocateUTF8"] = function() { abort("'allocateUTF8' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
if (!Object.getOwnPropertyDescriptor(Module, "allocateUTF8OnStack")) Module["allocateUTF8OnStack"] = function() { abort("'allocateUTF8OnStack' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") };
Module["writeStackCookie"] = writeStackCookie;
Module["checkStackCookie"] = checkStackCookie;
if (!Object.getOwnPropertyDescriptor(Module, "ALLOC_NORMAL")) Object.defineProperty(Module, "ALLOC_NORMAL", { configurable: true, get: function() { abort("'ALLOC_NORMAL' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") } });
if (!Object.getOwnPropertyDescriptor(Module, "ALLOC_STACK")) Object.defineProperty(Module, "ALLOC_STACK", { configurable: true, get: function() { abort("'ALLOC_STACK' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the FAQ)") } });

var calledRun;

/**
 * @constructor
 * @this {ExitStatus}
 */
function ExitStatus(status) {
  this.name = "ExitStatus";
  this.message = "Program terminated with exit(" + status + ")";
  this.status = status;
}

var calledMain = false;

dependenciesFulfilled = function runCaller() {
  // If run has never been called, and we should call run (INVOKE_RUN is true, and Module.noInitialRun is not false)
  if (!calledRun) run();
  if (!calledRun) dependenciesFulfilled = runCaller; // try this again later, after new deps are fulfilled
};

function callMain(args) {
  assert(runDependencies == 0, 'cannot call main when async dependencies remain! (listen on Module["onRuntimeInitialized"])');
  assert(__ATPRERUN__.length == 0, 'cannot call main when preRun functions remain to be called');

  var entryFunction = Module['_main'];

  args = args || [];

  var argc = args.length+1;
  var argv = stackAlloc((argc + 1) * 4);
  HEAP32[argv >> 2] = allocateUTF8OnStack(thisProgram);
  for (var i = 1; i < argc; i++) {
    HEAP32[(argv >> 2) + i] = allocateUTF8OnStack(args[i - 1]);
  }
  HEAP32[(argv >> 2) + argc] = 0;

  try {

    var ret = entryFunction(argc, argv);

    // In PROXY_TO_PTHREAD builds, we should never exit the runtime below, as
    // execution is asynchronously handed off to a pthread.
      // if we're not running an evented main loop, it's time to exit
      exit(ret, /* implicit = */ true);
  }
  catch(e) {
    if (e instanceof ExitStatus) {
      // exit() throws this once it's done to make sure execution
      // has been stopped completely
      return;
    } else if (e == 'unwind') {
      // running an evented main loop, don't immediately exit
      return;
    } else {
      var toLog = e;
      if (e && typeof e === 'object' && e.stack) {
        toLog = [e, e.stack];
      }
      err('exception thrown: ' + toLog);
      quit_(1, e);
    }
  } finally {
    calledMain = true;

  }
}

function stackCheckInit() {
  // This is normally called automatically during __wasm_call_ctors but need to
  // get these values before even running any of the ctors so we call it redundantly
  // here.
  // TODO(sbc): Move writeStackCookie to native to to avoid this.
  _emscripten_stack_init();
  writeStackCookie();
}

/** @type {function(Array=)} */
function run(args) {
  args = args || arguments_;

  if (runDependencies > 0) {
    return;
  }

  stackCheckInit();

  preRun();

  // a preRun added a dependency, run will be called later
  if (runDependencies > 0) {
    return;
  }

  function doRun() {
    // run may have just been called through dependencies being fulfilled just in this very frame,
    // or while the async setStatus time below was happening
    if (calledRun) return;
    calledRun = true;
    Module['calledRun'] = true;

    if (ABORT) return;

    initRuntime();

    preMain();

    if (Module['onRuntimeInitialized']) Module['onRuntimeInitialized']();

    if (shouldRunNow) callMain(args);

    postRun();
  }

  if (Module['setStatus']) {
    Module['setStatus']('Running...');
    setTimeout(function() {
      setTimeout(function() {
        Module['setStatus']('');
      }, 1);
      doRun();
    }, 1);
  } else
  {
    doRun();
  }
  checkStackCookie();
}
Module['run'] = run;

function checkUnflushedContent() {
  // Compiler settings do not allow exiting the runtime, so flushing
  // the streams is not possible. but in ASSERTIONS mode we check
  // if there was something to flush, and if so tell the user they
  // should request that the runtime be exitable.
  // Normally we would not even include flush() at all, but in ASSERTIONS
  // builds we do so just for this check, and here we see if there is any
  // content to flush, that is, we check if there would have been
  // something a non-ASSERTIONS build would have not seen.
  // How we flush the streams depends on whether we are in SYSCALLS_REQUIRE_FILESYSTEM=0
  // mode (which has its own special function for this; otherwise, all
  // the code is inside libc)
  var oldOut = out;
  var oldErr = err;
  var has = false;
  out = err = function(x) {
    has = true;
  }
  try { // it doesn't matter if it fails
    var flush = Module['_fflush'];
    if (flush) flush(0);
    // also flush in the JS FS layer
    ['stdout', 'stderr'].forEach(function(name) {
      var info = FS.analyzePath('/dev/' + name);
      if (!info) return;
      var stream = info.object;
      var rdev = stream.rdev;
      var tty = TTY.ttys[rdev];
      if (tty && tty.output && tty.output.length) {
        has = true;
      }
    });
  } catch(e) {}
  out = oldOut;
  err = oldErr;
  if (has) {
    warnOnce('stdio streams had content in them that was not flushed. you should set EXIT_RUNTIME to 1 (see the FAQ), or make sure to emit a newline when you printf etc.');
  }
}

/** @param {boolean|number=} implicit */
function exit(status, implicit) {
  EXITSTATUS = status;

  checkUnflushedContent();

  // if this is just main exit-ing implicitly, and the status is 0, then we
  // don't need to do anything here and can just leave. if the status is
  // non-zero, though, then we need to report it.
  // (we may have warned about this earlier, if a situation justifies doing so)
  if (implicit && keepRuntimeAlive() && status === 0) {
    return;
  }

  if (keepRuntimeAlive()) {
    // if exit() was called, we may warn the user if the runtime isn't actually being shut down
    if (!implicit) {
      var msg = 'program exited (with status: ' + status + '), but EXIT_RUNTIME is not set, so halting execution but not exiting the runtime or preventing further async execution (build with EXIT_RUNTIME=1, if you want a true shutdown)';
      err(msg);
    }
  } else {

    exitRuntime();

    if (Module['onExit']) Module['onExit'](status);

    ABORT = true;
  }

  quit_(status, new ExitStatus(status));
}

if (Module['preInit']) {
  if (typeof Module['preInit'] == 'function') Module['preInit'] = [Module['preInit']];
  while (Module['preInit'].length > 0) {
    Module['preInit'].pop()();
  }
}

// shouldRunNow refers to calling main(), not run().
var shouldRunNow = true;

if (Module['noInitialRun']) shouldRunNow = false;

run();





