ntries,mdn-javascript_builtins_object_getownpropertydescriptors,pad-start-end,mdn-javascript_grammar_trailing_commas_trailing_commas_in_functions">ECMAScript 8 / 2017</a>
                    and <a href="https://caniuse.com/?feats=mdn-javascript_operators_optional_chaining,mdn-javascript_operators_nullish_coalescing,mdn-javascript_builtins_globalthis,es6-module-dynamic-import,bigint,mdn-javascript_builtins_promise_allsettled,mdn-javascript_builtins_string_matchall,mdn-javascript_statements_export_namespace,