 write to WASM file using FS_createDataFile
                // if the file exists, delete it
                try {
                    Module.FS_unlink(fname);
                } catch (e) {
                    // ignore
                }

                Module.FS_createDataFile("/", fname, buf, true, true);

                printTextarea('storeFS: stored model: ' + fname + ' size: ' + buf.length);

                document.getElementById('model-whisper-status').innerHTML = 'loaded "' + model_whisper + '"!'