index.js

// include: shell.js
// 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(moduleArg) => Promise<Module>
// 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 : {};

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

// Attempt to auto-detect the environment
var ENVIRONMENT_IS_WEB = typeof window == 'object';
var ENVIRONMENT_IS_WORKER = typeof WorkerGlobalScope != 'undefined';
// N.b. Electron.js environment is simultaneously a NODE-environment, but
// also a web environment.
var ENVIRONMENT_IS_NODE = typeof process == 'object' && typeof process.versions == 'object' && typeof process.versions.node == 'string' && process.type != 'renderer';
var ENVIRONMENT_IS_SHELL = !ENVIRONMENT_IS_WEB && !ENVIRONMENT_IS_NODE && !ENVIRONMENT_IS_WORKER;

if (ENVIRONMENT_IS_NODE) {
  // `require()` is no-op in an ESM module, use `createRequire()` to construct
  // the require()` function.  This is only necessary for multi-environment
  // builds, `-sENVIRONMENT=node` emits a static import declaration instead.
  // TODO: Swap all `require()`'s with `import()`'s?

}

// --pre-jses are emitted after the Module integration code, so that they can
// refer to Module (if they choose; they can also define Module)
// include: C:\Users\Sal\AppData\Local\Temp\tmp_ebfoi07.js

  Module['expectedDataFileDownloads'] ??= 0;
  Module['expectedDataFileDownloads']++;
  (() => {
    // Do not attempt to redownload the virtual filesystem data when in a pthread or a Wasm Worker context.
    var isPthread = typeof ENVIRONMENT_IS_PTHREAD != 'undefined' && ENVIRONMENT_IS_PTHREAD;
    var isWasmWorker = typeof ENVIRONMENT_IS_WASM_WORKER != 'undefined' && ENVIRONMENT_IS_WASM_WORKER;
    if (isPthread || isWasmWorker) return;
    var isNode = typeof process === 'object' && typeof process.versions === 'object' && typeof process.versions.node === 'string';
    function loadPackage(metadata) {

      var PACKAGE_PATH = '';
      if (typeof window === 'object') {
        PACKAGE_PATH = window['encodeURIComponent'](window.location.pathname.substring(0, window.location.pathname.lastIndexOf('/')) + '/');
      } else if (typeof process === 'undefined' && typeof location !== 'undefined') {
        // web worker
        PACKAGE_PATH = encodeURIComponent(location.pathname.substring(0, location.pathname.lastIndexOf('/')) + '/');
      }
      var PACKAGE_NAME = 'index.data';
      var REMOTE_PACKAGE_BASE = 'index.data';
      var REMOTE_PACKAGE_NAME = Module['locateFile'] ? Module['locateFile'](REMOTE_PACKAGE_BASE, '') : REMOTE_PACKAGE_BASE;
var REMOTE_PACKAGE_SIZE = metadata['remote_package_size'];

      function fetchRemotePackage(packageName, packageSize, callback, errback) {
        if (isNode) {
          require('fs').readFile(packageName, (err, contents) => {
            if (err) {
              errback(err);
            } else {
              callback(contents.buffer);
            }
          });
          return;
        }
        Module['dataFileDownloads'] ??= {};
        fetch(packageName)
          .catch((cause) => Promise.reject(new Error(`Network Error: ${packageName}`, {cause}))) // If fetch fails, rewrite the error to include the failing URL & the cause.
          .then((response) => {
            if (!response.ok) {
              return Promise.reject(new Error(`${response.status}: ${response.url}`));
            }

            if (!response.body && response.arrayBuffer) { // If we're using the polyfill, readers won't be available...
              return response.arrayBuffer().then(callback);
            }

            const reader = response.body.getReader();
            const iterate = () => reader.read().then(handleChunk).catch((cause) => {
              return Promise.reject(new Error(`Unexpected error while handling : ${response.url} ${cause}`, {cause}));
            });

            const chunks = [];
            const headers = response.headers;
            const total = Number(headers.get('Content-Length') ?? packageSize);
            let loaded = 0;

            const handleChunk = ({done, value}) => {
              if (!done) {
                chunks.push(value);
                loaded += value.length;
                Module['dataFileDownloads'][packageName] = {loaded, total};

                let totalLoaded = 0;
                let totalSize = 0;

                for (const download of Object.values(Module['dataFileDownloads'])) {
                  totalLoaded += download.loaded;
                  totalSize += download.total;
                }

                Module['setStatus']?.(`Downloading data... (${totalLoaded}/${totalSize})`);
                return iterate();
              } else {
                const packageData = new Uint8Array(chunks.map((c) => c.length).reduce((a, b) => a + b, 0));
                let offset = 0;
                for (const chunk of chunks) {
                  packageData.set(chunk, offset);
                  offset += chunk.length;
                }
                callback(packageData.buffer);
              }
            };

            Module['setStatus']?.('Downloading data...');
            return iterate();
          });
      };

      function handleError(error) {
        console.error('package error:', error);
      };

      var fetchedCallback = null;
      var fetched = Module['getPreloadedPackage'] ? Module['getPreloadedPackage'](REMOTE_PACKAGE_NAME, REMOTE_PACKAGE_SIZE) : null;

      if (!fetched) fetchRemotePackage(REMOTE_PACKAGE_NAME, REMOTE_PACKAGE_SIZE, (data) => {
        if (fetchedCallback) {
          fetchedCallback(data);
          fetchedCallback = null;
        } else {
          fetched = data;
        }
      }, handleError);

    function runWithFS(Module) {

      function assert(check, msg) {
        if (!check) throw msg + new Error().stack;
      }

      /** @constructor */
      function DataRequest(start, end, audio) {
        this.start = start;
        this.end = end;
        this.audio = audio;
      }
      DataRequest.prototype = {
        requests: {},
        open: function(mode, name) {
          this.name = name;
          this.requests[name] = this;
          Module['addRunDependency'](`fp ${this.name}`);
        },
        send: function() {},
        onload: function() {
          var byteArray = this.byteArray.subarray(this.start, this.end);
          this.finish(byteArray);
        },
        finish: function(byteArray) {
          var that = this;
          // canOwn this data in the filesystem, it is a slide into the heap that will never change
          Module['FS_createDataFile'](this.name, null, byteArray, true, true, true);
          Module['removeRunDependency'](`fp ${that.name}`);
          this.requests[this.name] = null;
        }
      };

      var files = metadata['files'];
      for (var i = 0; i < files.length; ++i) {
        new DataRequest(files[i]['start'], files[i]['end'], files[i]['audio'] || 0).open('GET', files[i]['filename']);
      }

      function processPackageData(arrayBuffer) {
        assert(arrayBuffer, 'Loading data file failed.');
        assert(arrayBuffer.constructor.name === ArrayBuffer.name, 'bad input to processPackageData');
        var byteArray = new Uint8Array(arrayBuffer);
        var curr;
        // Reuse the bytearray from the XHR as the source for file reads.
          DataRequest.prototype.byteArray = byteArray;
          var files = metadata['files'];
          for (var i = 0; i < files.length; ++i) {
            DataRequest.prototype.requests[files[i].filename].onload();
          }          Module['removeRunDependency']('datafile_index.data');

      };
      Module['addRunDependency']('datafile_index.data');

      Module['preloadResults'] ??= {};

      Module['preloadResults'][PACKAGE_NAME] = {fromCache: false};
      if (fetched) {
        processPackageData(fetched);
        fetched = null;
      } else {
        fetchedCallback = processPackageData;
      }

    }
    if (Module['calledRun']) {
      runWithFS(Module);
    } else {
      (Module['preRun'] ??= []).push(runWithFS); // FS is not initialized yet, wait for it
    }

    }
    loadPackage({"files": [{"filename": "/arquivo.obj", "start": 0, "end": 1486}], "remote_package_size": 1486});

  })();

// end include: C:\Users\Sal\AppData\Local\Temp\tmp_ebfoi07.js
// include: C:\Users\Sal\AppData\Local\Temp\tmp9nqg086k.js

    // All the pre-js content up to here must remain later on, we need to run
    // it.
    if (Module['$ww'] || (typeof ENVIRONMENT_IS_PTHREAD != 'undefined' && ENVIRONMENT_IS_PTHREAD)) Module['preRun'] = [];
    var necessaryPreJSTasks = Module['preRun'].slice();
  // end include: C:\Users\Sal\AppData\Local\Temp\tmp9nqg086k.js
// include: C:\Users\Sal\AppData\Local\Temp\tmpsgxpba5w.js

    if (!Module['preRun']) throw 'Module.preRun should exist because file support used it; did a pre-js delete it?';
    necessaryPreJSTasks.forEach((task) => {
      if (Module['preRun'].indexOf(task) < 0) throw 'All preRun tasks that exist before user pre-js code should remain after; did you replace Module or modify Module.preRun?';
    });
  // end include: C:\Users\Sal\AppData\Local\Temp\tmpsgxpba5w.js


// 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 = Object.assign({}, Module);

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

// `/` 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 readAsync, readBinary;

if (ENVIRONMENT_IS_NODE) {
  if (typeof process == 'undefined' || !process.release || process.release.name !== 'node') throw new Error('not compiled for this environment (did you build to HTML and try to run it not on the web, or set ENVIRONMENT to something - like node - and run it someplace else - like on the web?)');

  var nodeVersion = process.versions.node;
  var numericVersion = nodeVersion.split('.').slice(0, 3);
  numericVersion = (numericVersion[0] * 10000) + (numericVersion[1] * 100) + (numericVersion[2].split('-')[0] * 1);
  var minVersion = 160000;
  if (numericVersion < 160000) {
    throw new Error('This emscripten-generated code requires node v16.0.0 (detected v' + nodeVersion + ')');
  }

  // These modules will usually be used on Node.js. Load them eagerly to avoid
  // the complexity of lazy-loading.
  var fs = require('fs');
  var nodePath = require('path');

  scriptDirectory = __dirname + '/';

// include: node_shell_read.js
readBinary = (filename) => {
  // We need to re-wrap `file://` strings to URLs. Normalizing isn't
  // necessary in that case, the path should already be absolute.
  filename = isFileURI(filename) ? new URL(filename) : nodePath.normalize(filename);
  var ret = fs.readFileSync(filename);
  assert(ret.buffer);
  return ret;
};

readAsync = (filename, binary = true) => {
  // See the comment in the `readBinary` function.
  filename = isFileURI(filename) ? new URL(filename) : nodePath.normalize(filename);
  return new Promise((resolve, reject) => {
    fs.readFile(filename, binary ? undefined : 'utf8', (err, data) => {
      if (err) reject(err);
      else resolve(binary ? data.buffer : data);
    });
  });
};
// end include: node_shell_read.js
  if (!Module['thisProgram'] && process.argv.length > 1) {
    thisProgram = process.argv[1].replace(/\\/g, '/');
  }

  arguments_ = process.argv.slice(2);

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

  quit_ = (status, toThrow) => {
    process.exitCode = status;
    throw toThrow;
  };

} else
if (ENVIRONMENT_IS_SHELL) {

  if ((typeof process == 'object' && typeof require === 'function') || typeof window == 'object' || typeof WorkerGlobalScope != 'undefined') throw new Error('not compiled for this environment (did you build to HTML and try to run it not on the web, or set ENVIRONMENT to something - like node - and run it someplace else - like on the web?)');

} 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 contains a query (starting with ?) or a fragment (starting with #),
  // they are removed because they could contain a slash.
  if (scriptDirectory.startsWith('blob:')) {
    scriptDirectory = '';
  } else {
    scriptDirectory = scriptDirectory.substr(0, scriptDirectory.replace(/[?#].*/, '').lastIndexOf('/')+1);
  }

  if (!(typeof window == 'object' || typeof WorkerGlobalScope != 'undefined')) throw new Error('not compiled for this environment (did you build to HTML and try to run it not on the web, or set ENVIRONMENT to something - like node - and run it someplace else - like on the web?)');

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

  readAsync = (url) => {
    // 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 XHR on webview if URL is a file URL.
    if (isFileURI(url)) {
      return new Promise((resolve, reject) => {
        var xhr = new XMLHttpRequest();
        xhr.open('GET', url, true);
        xhr.responseType = 'arraybuffer';
        xhr.onload = () => {
          if (xhr.status == 200 || (xhr.status == 0 && xhr.response)) { // file URLs can return 0
            resolve(xhr.response);
            return;
          }
          reject(xhr.status);
        };
        xhr.onerror = reject;
        xhr.send(null);
      });
    }
    return fetch(url, { credentials: 'same-origin' })
      .then((response) => {
        if (response.ok) {
          return response.arrayBuffer();
        }
        return Promise.reject(new Error(response.status + ' : ' + response.url));
      })
  };
// end include: web_or_worker_shell_read.js
  }
} else
{
  throw new Error('environment detection error');
}

var out = Module['print'] || console.log.bind(console);
var err = Module['printErr'] || console.error.bind(console);

// Merge back in the overrides
Object.assign(Module, moduleOverrides);
// Free the object hierarchy contained in the overrides, this lets the GC
// reclaim data used.
moduleOverrides = null;
checkIncomingModuleAPI();

// 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'];legacyModuleProp('arguments', 'arguments_');

if (Module['thisProgram']) thisProgram = Module['thisProgram'];legacyModuleProp('thisProgram', 'thisProgram');

// 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');
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 emscripten_set_window_title in JS)');
assert(typeof Module['TOTAL_MEMORY'] == 'undefined', 'Module.TOTAL_MEMORY has been renamed Module.INITIAL_MEMORY');
legacyModuleProp('asm', 'wasmExports');
legacyModuleProp('readAsync', 'readAsync');
legacyModuleProp('readBinary', 'readBinary');
legacyModuleProp('setWindowTitle', 'setWindowTitle');
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 FETCHFS = 'FETCHFS is no longer included by default; build with -lfetchfs.js';
var ICASEFS = 'ICASEFS is no longer included by default; build with -licasefs.js';
var JSFILEFS = 'JSFILEFS is no longer included by default; build with -ljsfilefs.js';
var OPFS = 'OPFS is no longer included by default; build with -lopfs.js';

var NODEFS = 'NODEFS is no longer included by default; build with -lnodefs.js';

assert(!ENVIRONMENT_IS_SHELL, 'shell environment detected but not enabled at build time.  Add `shell` to `-sENVIRONMENT` to enable.');

// end include: shell.js

// include: preamble.js
// === 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 = Module['wasmBinary'];legacyModuleProp('wasmBinary', 'wasmBinary');

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

// include: base64Utils.js
// Converts a string of base64 into a byte array (Uint8Array).
function intArrayFromBase64(s) {
  if (typeof ENVIRONMENT_IS_NODE != 'undefined' && ENVIRONMENT_IS_NODE) {
    var buf = Buffer.from(s, 'base64');
    return new Uint8Array(buf.buffer, buf.byteOffset, buf.length);
  }

  var decoded = atob(s);
  var bytes = new Uint8Array(decoded.length);
  for (var i = 0 ; i < decoded.length ; ++i) {
    bytes[i] = decoded.charCodeAt(i);
  }
  return bytes;
}

// If filename is a base64 data URI, parses and returns data (Buffer on node,
// Uint8Array otherwise). If filename is not a base64 data URI, returns undefined.
function tryParseAsDataURI(filename) {
  if (!isDataURI(filename)) {
    return;
  }

  return intArrayFromBase64(filename.slice(dataURIPrefix.length));
}
// end include: base64Utils.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;

// In STRICT mode, we only define assert() when ASSERTIONS is set.  i.e. we
// don't define it at all in release modes.  This matches the behaviour of
// MINIMAL_RUNTIME.
// TODO(sbc): Make this the default even without STRICT enabled.
/** @type {function(*, string=)} */
function assert(condition, text) {
  if (!condition) {
    abort('Assertion failed' + (text ? ': ' + text : ''));
  }
}

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

// Memory management

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

// include: runtime_shared.js
function updateMemoryViews() {
  var b = wasmMemory.buffer;
  Module['HEAP8'] = HEAP8 = new Int8Array(b);
  Module['HEAP16'] = HEAP16 = new Int16Array(b);
  Module['HEAPU8'] = HEAPU8 = new Uint8Array(b);
  Module['HEAPU16'] = HEAPU16 = new Uint16Array(b);
  Module['HEAP32'] = HEAP32 = new Int32Array(b);
  Module['HEAPU32'] = HEAPU32 = new Uint32Array(b);
  Module['HEAPF32'] = HEAPF32 = new Float32Array(b);
  Module['HEAPF64'] = HEAPF64 = new Float64Array(b);
}

// end include: runtime_shared.js
assert(!Module['STACK_SIZE'], 'STACK_SIZE can no longer be set at runtime.  Use -sSTACK_SIZE at link time')

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, or set INITIAL_MEMORY
assert(!Module['wasmMemory'], 'Use of `wasmMemory` detected.  Use -sIMPORTED_MEMORY to define wasmMemory externally');
assert(!Module['INITIAL_MEMORY'], 'Detected runtime INITIAL_MEMORY setting.  Use -sIMPORTED_MEMORY to define wasmMemory dynamically');

// 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);
  // If the stack ends at address zero we write our cookies 4 bytes into the
  // stack.  This prevents interference with SAFE_HEAP and ASAN which also
  // monitor writes to address zero.
  if (max == 0) {
    max += 4;
  }
  // The stack grow downwards towards _emscripten_stack_get_end.
  // We write cookies to the final two words in the stack and detect if they are
  // ever overwritten.
  HEAPU32[((max)>>2)] = 0x02135467;
  HEAPU32[(((max)+(4))>>2)] = 0x89BACDFE;
  // Also test the global address 0 for integrity.
  HEAPU32[((0)>>2)] = 1668509029;
}

function checkStackCookie() {
  if (ABORT) return;
  var max = _emscripten_stack_get_end();
  // See writeStackCookie().
  if (max == 0) {
    max += 4;
  }
  var cookie1 = HEAPU32[((max)>>2)];
  var cookie2 = HEAPU32[(((max)+(4))>>2)];
  if (cookie1 != 0x02135467 || cookie2 != 0x89BACDFE) {
    abort(`Stack overflow! Stack cookie has been overwritten at ${ptrToString(max)}, expected hex dwords 0x89BACDFE and 0x2135467, but received ${ptrToString(cookie2)} ${ptrToString(cookie1)}`);
  }
  // Also test the global address 0 for integrity.
  if (HEAPU32[((0)>>2)] != 0x63736d65 /* 'emsc' */) {
    abort('Runtime error: The application has corrupted its heap memory area (address zero)!');
  }
}
// end include: runtime_stack_check.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;

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() {
  assert(!runtimeInitialized);
  runtimeInitialized = true;

  checkStackCookie();

  
if (!Module['noFSInit'] && !FS.initialized)
  FS.init();
FS.ignorePermissions = false;

TTY.init();
  callRuntimeCallbacks(__ATINIT__);
}

function preMain() {
  checkStackCookie();
  
  callRuntimeCallbacks(__ATMAIN__);
}

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++;

  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(() => {
        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--;

  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
    }
  }
}

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

  what = 'Aborted(' + what + ')';
  // TODO(sbc): Should we remove printing and leave it up to whoever
  // catches the exception?
  err(what);

  ABORT = true;

  // 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.
  // FIXME This approach does not work in Wasm EH because it currently does not assume
  // all RuntimeErrors are from traps; it decides whether a RuntimeError is from
  // a trap or not based on a hidden field within the object. So at the moment
  // we don't have a way of throwing a wasm trap from JS. TODO Make a JS API that
  // allows this in the wasm spec.

  // Suppress closure compiler warning here. Closure compiler's builtin extern
  // definition for WebAssembly.RuntimeError claims it takes no arguments even
  // though it can.
  // TODO(https://github.com/google/closure-compiler/pull/3913): Remove if/when upstream closure gets fixed.
  /** @suppress {checkTypes} */
  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;
}

// 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.
 * @noinline
 */
var isDataURI = (filename) => filename.startsWith(dataURIPrefix);

/**
 * Indicates whether filename is delivered via file protocol (as opposed to http/https)
 * @noinline
 */
var isFileURI = (filename) => filename.startsWith('file://');
// end include: URIUtils.js
function createExportWrapper(name, nargs) {
  return (...args) => {
    assert(runtimeInitialized, `native function \`${name}\` called before runtime initialization`);
    var f = wasmExports[name];
    assert(f, `exported native function \`${name}\` not found`);
    // Only assert for too many arguments. Too few can be valid since the missing arguments will be zero filled.
    assert(args.length <= nargs, `native function \`${name}\` called with ${args.length} args but expects ${nargs}`);
    return f(...args);
  };
}

// include: runtime_exceptions.js
// end include: runtime_exceptions.js
function findWasmBinary() {
    var f = 'index.wasm';
    if (!isDataURI(f)) {
      return locateFile(f);
    }
    return f;
}

var wasmBinaryFile;

function getBinarySync(file) {
  if (file == wasmBinaryFile && wasmBinary) {
    return new Uint8Array(wasmBinary);
  }
  if (readBinary) {
    return readBinary(file);
  }
  throw 'both async and sync fetching of the wasm failed';
}

function getBinaryPromise(binaryFile) {
  // If we don't have the binary yet, load it asynchronously using readAsync.
  if (!wasmBinary
      ) {
    // Fetch the binary using readAsync
    return readAsync(binaryFile).then(
      (response) => new Uint8Array(/** @type{!ArrayBuffer} */(response)),
      // Fall back to getBinarySync if readAsync fails
      () => getBinarySync(binaryFile)
    );
  }

  // Otherwise, getBinarySync should be able to get it synchronously
  return Promise.resolve().then(() => getBinarySync(binaryFile));
}

function instantiateArrayBuffer(binaryFile, imports, receiver) {
  return getBinaryPromise(binaryFile).then((binary) => {
    return WebAssembly.instantiate(binary, imports);
  }).then(receiver, (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(binary, binaryFile, imports, callback) {
  if (!binary &&
      typeof WebAssembly.instantiateStreaming == 'function' &&
      !isDataURI(binaryFile) &&
      // Don't use streaming for file:// delivered objects in a webview, fetch them synchronously.
      !isFileURI(binaryFile) &&
      // Avoid instantiateStreaming() on Node.js environment for now, as while
      // Node.js v18.1.0 implements it, it does not have a full fetch()
      // implementation yet.
      //
      // Reference:
      //   https://github.com/emscripten-core/emscripten/pull/16917
      !ENVIRONMENT_IS_NODE &&
      typeof fetch == 'function') {
    return fetch(binaryFile, { credentials: 'same-origin' }).then((response) => {
      // Suppress closure warning here since the upstream definition for
      // instantiateStreaming only allows Promise<Repsponse> rather than
      // an actual Response.
      // TODO(https://github.com/google/closure-compiler/pull/3913): Remove if/when upstream closure is fixed.
      /** @suppress {checkTypes} */
      var result = WebAssembly.instantiateStreaming(response, imports);

      return result.then(
        callback,
        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(binaryFile, imports, callback);
        });
    });
  }
  return instantiateArrayBuffer(binaryFile, imports, callback);
}

function getWasmImports() {
  // prepare imports
  return {
    'env': wasmImports,
    'wasi_snapshot_preview1': wasmImports,
  }
}

// Create the wasm instance.
// Receives the wasm imports, returns the exports.
function createWasm() {
  // 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) {
    wasmExports = instance.exports;

    

    wasmMemory = wasmExports['memory'];
    
    assert(wasmMemory, 'memory not found in wasm exports');
    updateMemoryViews();

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

    addOnInit(wasmExports['__wasm_call_ctors']);

    removeRunDependency('wasm-instantiate');
    return wasmExports;
  }
  // wait for the pthread pool (if any)
  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 PTHREADS-enabled path.
    receiveInstance(result['instance']);
  }

  var info = getWasmImports();

  // 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.
  // Also pthreads and wasm workers initialize the wasm instance through this
  // path.
  if (Module['instantiateWasm']) {
    try {
      return Module['instantiateWasm'](info, receiveInstance);
    } catch(e) {
      err(`Module.instantiateWasm callback failed with error: ${e}`);
        return false;
    }
  }

  wasmBinaryFile ??= findWasmBinary();

  instantiateAsync(wasmBinary, wasmBinaryFile, info, receiveInstantiationResult);
  return {}; // no exports yet; we'll fill them in later
}

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

// include: runtime_debug.js
// Endianness check
(() => {
  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 -sSUPPORT_BIG_ENDIAN to bypass)';
})();

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

function legacyModuleProp(prop, newName, incoming=true) {
  if (!Object.getOwnPropertyDescriptor(Module, prop)) {
    Object.defineProperty(Module, prop, {
      configurable: true,
      get() {
        let extra = incoming ? ' (the initial value can be provided on Module, but after startup the value is only looked for on a local variable of that name)' : '';
        abort(`\`Module.${prop}\` has been replaced by \`${newName}\`` + extra);

      }
    });
  }
}

function ignoredModuleProp(prop) {
  if (Object.getOwnPropertyDescriptor(Module, prop)) {
    abort(`\`Module.${prop}\` was supplied but \`${prop}\` not included in INCOMING_MODULE_JS_API`);
  }
}

// forcing the filesystem exports a few things by default
function isExportedByForceFilesystem(name) {
  return name === 'FS_createPath' ||
         name === 'FS_createDataFile' ||
         name === 'FS_createPreloadedFile' ||
         name === 'FS_unlink' ||
         name === 'addRunDependency' ||
         // The old FS has some functionality that WasmFS lacks.
         name === 'FS_createLazyFile' ||
         name === 'FS_createDevice' ||
         name === 'removeRunDependency';
}

/**
 * Intercept access to a global symbol.  This enables us to give informative
 * warnings/errors when folks attempt to use symbols they did not include in
 * their build, or no symbols that no longer exist.
 */
function hookGlobalSymbolAccess(sym, func) {
  if (typeof globalThis != 'undefined' && !Object.getOwnPropertyDescriptor(globalThis, sym)) {
    Object.defineProperty(globalThis, sym, {
      configurable: true,
      get() {
        func();
        return undefined;
      }
    });
  }
}

function missingGlobal(sym, msg) {
  hookGlobalSymbolAccess(sym, () => {
    warnOnce(`\`${sym}\` is not longer defined by emscripten. ${msg}`);
  });
}

missingGlobal('buffer', 'Please use HEAP8.buffer or wasmMemory.buffer');
missingGlobal('asm', 'Please use wasmExports instead');

function missingLibrarySymbol(sym) {
  hookGlobalSymbolAccess(sym, () => {
    // Can't `abort()` here because it would break code that does runtime
    // checks.  e.g. `if (typeof SDL === 'undefined')`.
    var msg = `\`${sym}\` is a library symbol and not included by default; add it to your library.js __deps or to DEFAULT_LIBRARY_FUNCS_TO_INCLUDE on the command line`;
    // DEFAULT_LIBRARY_FUNCS_TO_INCLUDE requires the name as it appears in
    // library.js, which means $name for a JS name with no prefix, or name
    // for a JS name like _name.
    var librarySymbol = sym;
    if (!librarySymbol.startsWith('_')) {
      librarySymbol = '$' + sym;
    }
    msg += ` (e.g. -sDEFAULT_LIBRARY_FUNCS_TO_INCLUDE='${librarySymbol}')`;
    if (isExportedByForceFilesystem(sym)) {
      msg += '. Alternatively, forcing filesystem support (-sFORCE_FILESYSTEM) can export this for you';
    }
    warnOnce(msg);
  });

  // Any symbol that is not included from the JS library is also (by definition)
  // not exported on the Module object.
  unexportedRuntimeSymbol(sym);
}

function unexportedRuntimeSymbol(sym) {
  if (!Object.getOwnPropertyDescriptor(Module, sym)) {
    Object.defineProperty(Module, sym, {
      configurable: true,
      get() {
        var msg = `'${sym}' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the Emscripten FAQ)`;
        if (isExportedByForceFilesystem(sym)) {
          msg += '. Alternatively, forcing filesystem support (-sFORCE_FILESYSTEM) can export this for you';
        }
        abort(msg);
      }
    });
  }
}

// Used by XXXXX_DEBUG settings to output debug messages.
function dbg(...args) {
  // TODO(sbc): Make this configurable somehow.  Its not always convenient for
  // logging to show up as warnings.
  console.warn(...args);
}
// end include: runtime_debug.js
// === Body ===
// end include: preamble.js


  class ExitStatus {
      name = 'ExitStatus';
      constructor(status) {
        this.message = `Program terminated with exit(${status})`;
        this.status = status;
      }
    }

  var callRuntimeCallbacks = (callbacks) => {
      while (callbacks.length > 0) {
        // Pass the module as the first argument.
        callbacks.shift()(Module);
      }
    };

  
    /**
     * @param {number} ptr
     * @param {string} type
     */
  function getValue(ptr, type = 'i8') {
    if (type.endsWith('*')) type = '*';
    switch (type) {
      case 'i1': return HEAP8[ptr];
      case 'i8': return HEAP8[ptr];
      case 'i16': return HEAP16[((ptr)>>1)];
      case 'i32': return HEAP32[((ptr)>>2)];
      case 'i64': abort('to do getValue(i64) use WASM_BIGINT');
      case 'float': return HEAPF32[((ptr)>>2)];
      case 'double': return HEAPF64[((ptr)>>3)];
      case '*': return HEAPU32[((ptr)>>2)];
      default: abort(`invalid type for getValue: ${type}`);
    }
  }

  var noExitRuntime = Module['noExitRuntime'] || true;

  var ptrToString = (ptr) => {
      assert(typeof ptr === 'number');
      // With CAN_ADDRESS_2GB or MEMORY64, pointers are already unsigned.
      ptr >>>= 0;
      return '0x' + ptr.toString(16).padStart(8, '0');
    };

  
    /**
     * @param {number} ptr
     * @param {number} value
     * @param {string} type
     */
  function setValue(ptr, value, type = 'i8') {
    if (type.endsWith('*')) type = '*';
    switch (type) {
      case 'i1': HEAP8[ptr] = value; break;
      case 'i8': HEAP8[ptr] = value; break;
      case 'i16': HEAP16[((ptr)>>1)] = value; break;
      case 'i32': HEAP32[((ptr)>>2)] = value; break;
      case 'i64': abort('to do setValue(i64) use WASM_BIGINT');
      case 'float': HEAPF32[((ptr)>>2)] = value; break;
      case 'double': HEAPF64[((ptr)>>3)] = value; break;
      case '*': HEAPU32[((ptr)>>2)] = value; break;
      default: abort(`invalid type for setValue: ${type}`);
    }
  }

  var stackRestore = (val) => __emscripten_stack_restore(val);

  var stackSave = () => _emscripten_stack_get_current();

  var warnOnce = (text) => {
      warnOnce.shown ||= {};
      if (!warnOnce.shown[text]) {
        warnOnce.shown[text] = 1;
        if (ENVIRONMENT_IS_NODE) text = 'warning: ' + text;
        err(text);
      }
    };

  var UTF8Decoder = typeof TextDecoder != 'undefined' ? new TextDecoder() : undefined;
  
    /**
     * Given a pointer 'idx' 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.
     * heapOrArray is either a regular array, or a JavaScript typed array view.
     * @param {number=} idx
     * @param {number=} maxBytesToRead
     * @return {string}
     */
  var UTF8ArrayToString = (heapOrArray, idx = 0, maxBytesToRead = NaN) => {
      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/NaN means Infinity)
      while (heapOrArray[endPtr] && !(endPtr >= endIdx)) ++endPtr;
  
      if (endPtr - idx > 16 && heapOrArray.buffer && UTF8Decoder) {
        return UTF8Decoder.decode(heapOrArray.subarray(idx, endPtr));
      }
      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 = heapOrArray[idx++];
        if (!(u0 & 0x80)) { str += String.fromCharCode(u0); continue; }
        var u1 = heapOrArray[idx++] & 63;
        if ((u0 & 0xE0) == 0xC0) { str += String.fromCharCode(((u0 & 31) << 6) | u1); continue; }
        var u2 = heapOrArray[idx++] & 63;
        if ((u0 & 0xF0) == 0xE0) {
          u0 = ((u0 & 15) << 12) | (u1 << 6) | u2;
        } else {
          if ((u0 & 0xF8) != 0xF0) warnOnce('Invalid UTF-8 leading byte ' + ptrToString(u0) + ' encountered when deserializing a UTF-8 string in wasm memory to a JS string!');
          u0 = ((u0 & 7) << 18) | (u1 << 12) | (u2 << 6) | (heapOrArray[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.
     *
     * @param {number} ptr
     * @param {number=} 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
     * @return {string}
     */
  var UTF8ToString = (ptr, maxBytesToRead) => {
      assert(typeof ptr == 'number', `UTF8ToString expects a number (got ${typeof ptr})`);
      return ptr ? UTF8ArrayToString(HEAPU8, ptr, maxBytesToRead) : '';
    };
  var ___assert_fail = (condition, filename, line, func) =>
      abort(`Assertion failed: ${UTF8ToString(condition)}, at: ` + [filename ? UTF8ToString(filename) : 'unknown filename', line, func ? UTF8ToString(func) : 'unknown function']);

  class ExceptionInfo {
      // excPtr - Thrown object pointer to wrap. Metadata pointer is calculated from it.
      constructor(excPtr) {
        this.excPtr = excPtr;
        this.ptr = excPtr - 24;
      }
  
      set_type(type) {
        HEAPU32[(((this.ptr)+(4))>>2)] = type;
      }
  
      get_type() {
        return HEAPU32[(((this.ptr)+(4))>>2)];
      }
  
      set_destructor(destructor) {
        HEAPU32[(((this.ptr)+(8))>>2)] = destructor;
      }
  
      get_destructor() {
        return HEAPU32[(((this.ptr)+(8))>>2)];
      }
  
      set_caught(caught) {
        caught = caught ? 1 : 0;
        HEAP8[(this.ptr)+(12)] = caught;
      }
  
      get_caught() {
        return HEAP8[(this.ptr)+(12)] != 0;
      }
  
      set_rethrown(rethrown) {
        rethrown = rethrown ? 1 : 0;
        HEAP8[(this.ptr)+(13)] = rethrown;
      }
  
      get_rethrown() {
        return HEAP8[(this.ptr)+(13)] != 0;
      }
  
      // Initialize native structure fields. Should be called once after allocated.
      init(type, destructor) {
        this.set_adjusted_ptr(0);
        this.set_type(type);
        this.set_destructor(destructor);
      }
  
      set_adjusted_ptr(adjustedPtr) {
        HEAPU32[(((this.ptr)+(16))>>2)] = adjustedPtr;
      }
  
      get_adjusted_ptr() {
        return HEAPU32[(((this.ptr)+(16))>>2)];
      }
    }
  
  var exceptionLast = 0;
  
  var uncaughtExceptionCount = 0;
  var ___cxa_throw = (ptr, type, destructor) => {
      var info = new ExceptionInfo(ptr);
      // Initialize ExceptionInfo content after it was allocated in __cxa_allocate_exception.
      info.init(type, destructor);
      exceptionLast = ptr;
      uncaughtExceptionCount++;
      assert(false, 'Exception thrown, but exception catching is not enabled. Compile with -sNO_DISABLE_EXCEPTION_CATCHING or -sEXCEPTION_CATCHING_ALLOWED=[..] to catch.');
    };

  /** @suppress {duplicate } */
  var syscallGetVarargI = () => {
      assert(SYSCALLS.varargs != undefined);
      // the `+` prepended here is necessary to convince the JSCompiler that varargs is indeed a number.
      var ret = HEAP32[((+SYSCALLS.varargs)>>2)];
      SYSCALLS.varargs += 4;
      return ret;
    };
  var syscallGetVarargP = syscallGetVarargI;
  
  
  var PATH = {
  isAbs:(path) => path.charAt(0) === '/',
  splitPath:(filename) => {
        var splitPathRe = /^(\/?|)([\s\S]*?)((?:\.{1,2}|[^\/]+?|)(\.[^.\/]*|))(?:[\/]*)$/;
        return splitPathRe.exec(filename).slice(1);
      },
  normalizeArray:(parts, allowAboveRoot) => {
        // if the path tries to go above the root, `up` ends up > 0
        var up = 0;
        for (var i = parts.length - 1; i >= 0; i--) {
          var last = parts[i];
          if (last === '.') {
            parts.splice(i, 1);
          } else if (last === '..') {
            parts.splice(i, 1);
            up++;
          } else if (up) {
            parts.splice(i, 1);
            up--;
          }
        }
        // if the path is allowed to go above the root, restore leading ..s
        if (allowAboveRoot) {
          for (; up; up--) {
            parts.unshift('..');
          }
        }
        return parts;
      },
  normalize:(path) => {
        var isAbsolute = PATH.isAbs(path),
            trailingSlash = path.substr(-1) === '/';
        // Normalize the path
        path = PATH.normalizeArray(path.split('/').filter((p) => !!p), !isAbsolute).join('/');
        if (!path && !isAbsolute) {
          path = '.';
        }
        if (path && trailingSlash) {
          path += '/';
        }
        return (isAbsolute ? '/' : '') + path;
      },
  dirname:(path) => {
        var result = PATH.splitPath(path),
            root = result[0],
            dir = result[1];
        if (!root && !dir) {
          // No dirname whatsoever
          return '.';
        }
        if (dir) {
          // It has a dirname, strip trailing slash
          dir = dir.substr(0, dir.length - 1);
        }
        return root + dir;
      },
  basename:(path) => {
        // EMSCRIPTEN return '/'' for '/', not an empty string
        if (path === '/') return '/';
        path = PATH.normalize(path);
        path = path.replace(/\/$/, "");
        var lastSlash = path.lastIndexOf('/');
        if (lastSlash === -1) return path;
        return path.substr(lastSlash+1);
      },
  join:(...paths) => PATH.normalize(paths.join('/')),
  join2:(l, r) => PATH.normalize(l + '/' + r),
  };
  
  var initRandomFill = () => {
      if (typeof crypto == 'object' && typeof crypto['getRandomValues'] == 'function') {
        // for modern web browsers
        return (view) => crypto.getRandomValues(view);
      } else
      if (ENVIRONMENT_IS_NODE) {
        // for nodejs with or without crypto support included
        try {
          var crypto_module = require('crypto');
          var randomFillSync = crypto_module['randomFillSync'];
          if (randomFillSync) {
            // nodejs with LTS crypto support
            return (view) => crypto_module['randomFillSync'](view);
          }
          // very old nodejs with the original crypto API
          var randomBytes = crypto_module['randomBytes'];
          return (view) => (
            view.set(randomBytes(view.byteLength)),
            // Return the original view to match modern native implementations.
            view
          );
        } 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
      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: (array) => { for (var i = 0; i < array.length; i++) array[i] = (Math.random()*256)|0 } };');
    };
  var randomFill = (view) => {
      // Lazily init on the first invocation.
      return (randomFill = initRandomFill())(view);
    };
  
  
  
  var PATH_FS = {
  resolve:(...args) => {
        var resolvedPath = '',
          resolvedAbsolute = false;
        for (var i = args.length - 1; i >= -1 && !resolvedAbsolute; i--) {
          var path = (i >= 0) ? args[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.isAbs(path);
        }
        // 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((p) => !!p), !resolvedAbsolute).join('/');
        return ((resolvedAbsolute ? '/' : '') + resolvedPath) || '.';
      },
  relative:(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 FS_stdin_getChar_buffer = [];
  
  var 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 c = str.charCodeAt(i); // possibly a lead surrogate
        if (c <= 0x7F) {
          len++;
        } else if (c <= 0x7FF) {
          len += 2;
        } else if (c >= 0xD800 && c <= 0xDFFF) {
          len += 4; ++i;
        } else {
          len += 3;
        }
      }
      return len;
    };
  
  var stringToUTF8Array = (str, heap, outIdx, maxBytesToWrite) => {
      assert(typeof str === 'string', `stringToUTF8Array expects a string (got ${typeof str})`);
      // Parameter maxBytesToWrite is not optional. Negative values, 0, null,
      // undefined and false each don't write out any bytes.
      if (!(maxBytesToWrite > 0))
        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 > 0x10FFFF) warnOnce('Invalid Unicode code point ' + ptrToString(u) + ' encountered when serializing a JS string to a UTF-8 string in wasm memory! (Valid unicode code points should be in range 0-0x10FFFF).');
          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;
    };
  /** @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;
  }
  var FS_stdin_getChar = () => {
      if (!FS_stdin_getChar_buffer.length) {
        var result = null;
        if (ENVIRONMENT_IS_NODE) {
          // we will read data by chunks of BUFSIZE
          var BUFSIZE = 256;
          var buf = Buffer.alloc(BUFSIZE);
          var bytesRead = 0;
  
          // For some reason we must suppress a closure warning here, even though
          // fd definitely exists on process.stdin, and is even the proper way to
          // get the fd of stdin,
          // https://github.com/nodejs/help/issues/2136#issuecomment-523649904
          // This started to happen after moving this logic out of library_tty.js,
          // so it is related to the surrounding code in some unclear manner.
          /** @suppress {missingProperties} */
          var fd = process.stdin.fd;
  
          try {
            bytesRead = fs.readSync(fd, buf, 0, BUFSIZE);
          } 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
        if (typeof window != 'undefined' &&
          typeof window.prompt == 'function') {
          // Browser.
          result = window.prompt('Input: ');  // returns null on cancel
          if (result !== null) {
            result += '\n';
          }
        } else
        {}
        if (!result) {
          return null;
        }
        FS_stdin_getChar_buffer = intArrayFromString(result, true);
      }
      return FS_stdin_getChar_buffer.shift();
    };
  var TTY = {
  ttys:[],
  init() {
        // 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() {
        // 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(dev, ops) {
        TTY.ttys[dev] = { input: [], output: [], ops: ops };
        FS.registerDevice(dev, TTY.stream_ops);
      },
  stream_ops:{
  open(stream) {
          var tty = TTY.ttys[stream.node.rdev];
          if (!tty) {
            throw new FS.ErrnoError(43);
          }
          stream.tty = tty;
          stream.seekable = false;
        },
  close(stream) {
          // flush any pending line data
          stream.tty.ops.fsync(stream.tty);
        },
  fsync(stream) {
          stream.tty.ops.fsync(stream.tty);
        },
  read(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(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(tty) {
          return FS_stdin_getChar();
        },
  put_char(tty, val) {
          if (val === null || val === 10) {
            out(UTF8ArrayToString(tty.output));
            tty.output = [];
          } else {
            if (val != 0) tty.output.push(val); // val == 0 would cut text output off in the middle.
          }
        },
  fsync(tty) {
          if (tty.output && tty.output.length > 0) {
            out(UTF8ArrayToString(tty.output));
            tty.output = [];
          }
        },
  ioctl_tcgets(tty) {
          // typical setting
          return {
            c_iflag: 25856,
            c_oflag: 5,
            c_cflag: 191,
            c_lflag: 35387,
            c_cc: [
              0x03, 0x1c, 0x7f, 0x15, 0x04, 0x00, 0x01, 0x00, 0x11, 0x13, 0x1a, 0x00,
              0x12, 0x0f, 0x17, 0x16, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
              0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
            ]
          };
        },
  ioctl_tcsets(tty, optional_actions, data) {
          // currently just ignore
          return 0;
        },
  ioctl_tiocgwinsz(tty) {
          return [24, 80];
        },
  },
  default_tty1_ops:{
  put_char(tty, val) {
          if (val === null || val === 10) {
            err(UTF8ArrayToString(tty.output));
            tty.output = [];
          } else {
            if (val != 0) tty.output.push(val);
          }
        },
  fsync(tty) {
          if (tty.output && tty.output.length > 0) {
            err(UTF8ArrayToString(tty.output));
            tty.output = [];
          }
        },
  },
  };
  
  
  var zeroMemory = (address, size) => {
      HEAPU8.fill(0, address, address + size);
    };
  
  var alignMemory = (size, alignment) => {
      assert(alignment, "alignment argument is required");
      return Math.ceil(size / alignment) * alignment;
    };
  var mmapAlloc = (size) => {
      abort('internal error: mmapAlloc called but `emscripten_builtin_memalign` native symbol not exported');
    };
  var MEMFS = {
  ops_table:null,
  mount(mount) {
        return MEMFS.createNode(null, '/', 16895, 0);
      },
  createNode(parent, name, mode, dev) {
        if (FS.isBlkdev(mode) || FS.isFIFO(mode)) {
          // no supported
          throw new FS.ErrnoError(63);
        }
        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(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(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(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(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(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(parent, name) {
          throw new FS.ErrnoError(44);
        },
  mknod(parent, name, mode, dev) {
          return MEMFS.createNode(parent, name, mode, dev);
        },
  rename(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;
        },
  unlink(parent, name) {
          delete parent.contents[name];
          parent.timestamp = Date.now();
        },
  rmdir(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(node) {
          var entries = ['.', '..'];
          for (var key of Object.keys(node.contents)) {
            entries.push(key);
          }
          return entries;
        },
  symlink(parent, newname, oldpath) {
          var node = MEMFS.createNode(parent, newname, 0o777 | 40960, 0);
          node.link = oldpath;
          return node;
        },
  readlink(node) {
          if (!FS.isLink(node.mode)) {
            throw new FS.ErrnoError(28);
          }
          return node.link;
        },
  },
  stream_ops:{
  read(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(stream, buffer, offset, length, position, canOwn) {
          // The data buffer should be a typed array view
          assert(!(buffer instanceof ArrayBuffer));
  
          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(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(stream, offset, length) {
          MEMFS.expandFileStorage(stream.node, offset + length);
          stream.node.usedBytes = Math.max(stream.node.usedBytes, offset + length);
        },
  mmap(stream, length, position, prot, flags) {
          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 && contents.buffer === HEAP8.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 {
            allocated = true;
            ptr = mmapAlloc(length);
            if (!ptr) {
              throw new FS.ErrnoError(48);
            }
            if (contents) {
              // 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);
                }
              }
              HEAP8.set(contents, ptr);
            }
          }
          return { ptr, allocated };
        },
  msync(stream, buffer, offset, length, mmapFlags) {
          MEMFS.stream_ops.write(stream, buffer, 0, length, offset, false);
          // should we check if bytesWritten and length are the same?
          return 0;
        },
  },
  };
  
  /** @param {boolean=} noRunDep */
  var asyncLoad = (url, onload, onerror, noRunDep) => {
      var dep = !noRunDep ? getUniqueRunDependency(`al ${url}`) : '';
      readAsync(url).then(
        (arrayBuffer) => {
          assert(arrayBuffer, `Loading data file "${url}" failed (no arrayBuffer).`);
          onload(new Uint8Array(arrayBuffer));
          if (dep) removeRunDependency(dep);
        },
        (err) => {
          if (onerror) {
            onerror();
          } else {
            throw `Loading data file "${url}" failed.`;
          }
        }
      );
      if (dep) addRunDependency(dep);
    };
  
  
  var FS_createDataFile = (parent, name, fileData, canRead, canWrite, canOwn) => {
      FS.createDataFile(parent, name, fileData, canRead, canWrite, canOwn);
    };
  
  var preloadPlugins = Module['preloadPlugins'] || [];
  var FS_handledByPreloadPlugin = (byteArray, fullname, finish, onerror) => {
      // Ensure plugins are ready.
      if (typeof Browser != 'undefined') Browser.init();
  
      var handled = false;
      preloadPlugins.forEach((plugin) => {
        if (handled) return;
        if (plugin['canHandle'](fullname)) {
          plugin['handle'](byteArray, fullname, finish, onerror);
          handled = true;
        }
      });
      return handled;
    };
  var FS_createPreloadedFile = (parent, name, url, canRead, canWrite, onload, onerror, dontCreateFile, canOwn, preFinish) => {
      // 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) {
          preFinish?.();
          if (!dontCreateFile) {
            FS_createDataFile(parent, name, byteArray, canRead, canWrite, canOwn);
          }
          onload?.();
          removeRunDependency(dep);
        }
        if (FS_handledByPreloadPlugin(byteArray, fullname, finish, () => {
          onerror?.();
          removeRunDependency(dep);
        })) {
          return;
        }
        finish(byteArray);
      }
      addRunDependency(dep);
      if (typeof url == 'string') {
        asyncLoad(url, processData, onerror);
      } else {
        processData(url);
      }
    };
  
  var FS_modeStringToFlags = (str) => {
      var flagModes = {
        'r': 0,
        'r+': 2,
        'w': 512 | 64 | 1,
        'w+': 512 | 64 | 2,
        'a': 1024 | 64 | 1,
        'a+': 1024 | 64 | 2,
      };
      var flags = flagModes[str];
      if (typeof flags == 'undefined') {
        throw new Error(`Unknown file open mode: ${str}`);
      }
      return flags;
    };
  
  var FS_getMode = (canRead, canWrite) => {
      var mode = 0;
      if (canRead) mode |= 292 | 73;
      if (canWrite) mode |= 146;
      return mode;
    };
  
  
  
  
  
  
  var strError = (errno) => UTF8ToString(_strerror(errno));
  
  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,
  ErrnoError:class extends Error {
        name = 'ErrnoError';
        // We set the `name` property to be able to identify `FS.ErrnoError`
        // - the `name` is a standard ECMA-262 property of error objects. Kind of good to have it anyway.
        // - when using PROXYFS, an error can come from an underlying FS
        // as different FS objects have their own FS.ErrnoError each,
        // the test `err instanceof FS.ErrnoError` won't detect an error coming from another filesystem, causing bugs.
        // we'll use the reliable test `err.name == "ErrnoError"` instead
        constructor(errno) {
          super(runtimeInitialized ? strError(errno) : '');
          this.errno = errno;
          for (var key in ERRNO_CODES) {
            if (ERRNO_CODES[key] === errno) {
              this.code = key;
              break;
            }
          }
        }
      },
  filesystems:null,
  syncFSRequests:0,
  readFiles:{
  },
  FSStream:class {
        shared = {};
        get object() {
          return this.node;
        }
        set object(val) {
          this.node = val;
        }
        get isRead() {
          return (this.flags & 2097155) !== 1;
        }
        get isWrite() {
          return (this.flags & 2097155) !== 0;
        }
        get isAppend() {
          return (this.flags & 1024);
        }
        get flags() {
          return this.shared.flags;
        }
        set flags(val) {
          this.shared.flags = val;
        }
        get position() {
          return this.shared.position;
        }
        set position(val) {
          this.shared.position = val;
        }
      },
  FSNode:class {
        node_ops = {};
        stream_ops = {};
        readMode = 292 | 73;
        writeMode = 146;
        mounted = null;
        constructor(parent, name, mode, rdev) {
          if (!parent) {
            parent = this;  // root node sets parent to itself
          }
          this.parent = parent;
          this.mount = parent.mount;
          this.id = FS.nextInode++;
          this.name = name;
          this.mode = mode;
          this.rdev = rdev;
        }
        get read() {
          return (this.mode & this.readMode) === this.readMode;
        }
        set read(val) {
          val ? this.mode |= this.readMode : this.mode &= ~this.readMode;
        }
        get write() {
          return (this.mode & this.writeMode) === this.writeMode;
        }
        set write(val) {
          val ? this.mode |= this.writeMode : this.mode &= ~this.writeMode;
        }
        get isFolder() {
          return FS.isDir(this.mode);
        }
        get isDevice() {
          return FS.isChrdev(this.mode);
        }
      },
  lookupPath(path, opts = {}) {
        path = PATH_FS.resolve(path);
  
        if (!path) return { path: '', node: null };
  
        var defaults = {
          follow_mount: true,
          recurse_count: 0
        };
        opts = Object.assign(defaults, opts)
  
        if (opts.recurse_count > 8) {  // max recursive lookup of 8
          throw new FS.ErrnoError(32);
        }
  
        // split the absolute path
        var parts = path.split('/').filter((p) => !!p);
  
        // 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 + 1 });
              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(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(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(node) {
        var hash = FS.hashName(node.parent.id, node.name);
        node.name_next = FS.nameTable[hash];
        FS.nameTable[hash] = node;
      },
  hashRemoveNode(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(parent, name) {
        var errCode = FS.mayLookup(parent);
        if (errCode) {
          throw new FS.ErrnoError(errCode);
        }
        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(parent, name, mode, rdev) {
        assert(typeof parent == 'object')
        var node = new FS.FSNode(parent, name, mode, rdev);
  
        FS.hashAddNode(node);
  
        return node;
      },
  destroyNode(node) {
        FS.hashRemoveNode(node);
      },
  isRoot(node) {
        return node === node.parent;
      },
  isMountpoint(node) {
        return !!node.mounted;
      },
  isFile(mode) {
        return (mode & 61440) === 32768;
      },
  isDir(mode) {
        return (mode & 61440) === 16384;
      },
  isLink(mode) {
        return (mode & 61440) === 40960;
      },
  isChrdev(mode) {
        return (mode & 61440) === 8192;
      },
  isBlkdev(mode) {
        return (mode & 61440) === 24576;
      },
  isFIFO(mode) {
        return (mode & 61440) === 4096;
      },
  isSocket(mode) {
        return (mode & 49152) === 49152;
      },
  flagsToPermissionString(flag) {
        var perms = ['r', 'w', 'rw'][flag & 3];
        if ((flag & 512)) {
          perms += 'w';
        }
        return perms;
      },
  nodePermissions(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(dir) {
        if (!FS.isDir(dir.mode)) return 54;
        var errCode = FS.nodePermissions(dir, 'x');
        if (errCode) return errCode;
        if (!dir.node_ops.lookup) return 2;
        return 0;
      },
  mayCreate(dir, name) {
        try {
          var node = FS.lookupNode(dir, name);
          return 20;
        } catch (e) {
        }
        return FS.nodePermissions(dir, 'wx');
      },
  mayDelete(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(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() {
        for (var fd = 0; fd <= FS.MAX_OPEN_FDS; fd++) {
          if (!FS.streams[fd]) {
            return fd;
          }
        }
        throw new FS.ErrnoError(33);
      },
  getStreamChecked(fd) {
        var stream = FS.getStream(fd);
        if (!stream) {
          throw new FS.ErrnoError(8);
        }
        return stream;
      },
  getStream:(fd) => FS.streams[fd],
  createStream(stream, fd = -1) {
        assert(fd >= -1);
  
        // clone it, so we can return an instance of FSStream
        stream = Object.assign(new FS.FSStream(), stream);
        if (fd == -1) {
          fd = FS.nextfd();
        }
        stream.fd = fd;
        FS.streams[fd] = stream;
        return stream;
      },
  closeStream(fd) {
        FS.streams[fd] = null;
      },
  dupStream(origStream, fd = -1) {
        var stream = FS.createStream(origStream, fd);
        stream.stream_ops?.dup?.(stream);
        return stream;
      },
  chrdev_stream_ops:{
  open(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
          stream.stream_ops.open?.(stream);
        },
  llseek() {
          throw new FS.ErrnoError(70);
        },
  },
  major:(dev) => ((dev) >> 8),
  minor:(dev) => ((dev) & 0xff),
  makedev:(ma, mi) => ((ma) << 8 | (mi)),
  registerDevice(dev, ops) {
        FS.devices[dev] = { stream_ops: ops };
      },
  getDevice:(dev) => FS.devices[dev],
  getMounts(mount) {
        var mounts = [];
        var check = [mount];
  
        while (check.length) {
          var m = check.pop();
  
          mounts.push(m);
  
          check.push(...m.mounts);
        }
  
        return mounts;
      },
  syncfs(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((mount) => {
          if (!mount.type.syncfs) {
            return done(null);
          }
          mount.type.syncfs(mount, populate, done);
        });
      },
  mount(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,
          opts,
          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(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((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(parent, name) {
        return parent.node_ops.lookup(parent, name);
      },
  mknod(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);
      },
  statfs(path) {
  
        // NOTE: None of the defaults here are true. We're just returning safe and
        //       sane values.
        var rtn = {
          bsize: 4096,
          frsize: 4096,
          blocks: 1e6,
          bfree: 5e5,
          bavail: 5e5,
          files: FS.nextInode,
          ffree: FS.nextInode - 1,
          fsid: 42,
          flags: 2,
          namelen: 255,
        };
  
        var parent = FS.lookupPath(path, {follow: true}).node;
        if (parent?.node_ops.statfs) {
          Object.assign(rtn, parent.node_ops.statfs(parent.mount.opts.root));
        }
        return rtn;
      },
  create(path, mode = 0o666) {
        mode &= 4095;
        mode |= 32768;
        return FS.mknod(path, mode, 0);
      },
  mkdir(path, mode = 0o777) {
        mode &= 511 | 512;
        mode |= 16384;
        return FS.mknod(path, mode, 0);
      },
  mkdirTree(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(path, mode, dev) {
        if (typeof dev == 'undefined') {
          dev = mode;
          mode = 0o666;
        }
        mode |= 8192;
        return FS.mknod(path, mode, dev);
      },
  symlink(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(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 existent 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);
          }
        }
        // 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);
          // update old node (we do this here to avoid each backend
          // needing to)
          old_node.parent = new_dir;
        } catch (e) {
          throw e;
        } finally {
          // add the node back to the hash (in case node_ops.rename
          // changed its name)
          FS.hashAddNode(old_node);
        }
      },
  rmdir(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);
        }
        parent.node_ops.rmdir(parent, name);
        FS.destroyNode(node);
      },
  readdir(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(path) {
        var lookup = FS.lookupPath(path, { parent: true });
        var parent = lookup.node;
        if (!parent) {
          throw new FS.ErrnoError(44);
        }
        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);
        }
        parent.node_ops.unlink(parent, name);
        FS.destroyNode(node);
      },
  readlink(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 link.node_ops.readlink(link);
      },
  stat(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(path) {
        return FS.stat(path, true);
      },
  chmod(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(path, mode) {
        FS.chmod(path, mode, true);
      },
  fchmod(fd, mode) {
        var stream = FS.getStreamChecked(fd);
        FS.chmod(stream.node, mode);
      },
  chown(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(path, uid, gid) {
        FS.chown(path, uid, gid, true);
      },
  fchown(fd, uid, gid) {
        var stream = FS.getStreamChecked(fd);
        FS.chown(stream.node, uid, gid);
      },
  truncate(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(fd, len) {
        var stream = FS.getStreamChecked(fd);
        if ((stream.flags & 2097155) === 0) {
          throw new FS.ErrnoError(28);
        }
        FS.truncate(stream.node, len);
      },
  utime(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(path, flags, mode = 0o666) {
        if (path === "") {
          throw new FS.ErrnoError(44);
        }
        flags = typeof flags == 'string' ? FS_modeStringToFlags(flags) : flags;
        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) && !created) {
          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,
          path: FS.getPath(node),  // we want the absolute path to the node
          flags,
          seekable: true,
          position: 0,
          stream_ops: node.stream_ops,
          // used by the file family libc calls (fopen, fwrite, ferror, etc.)
          ungotten: [],
          error: false
        });
        // call the new stream's open function
        if (stream.stream_ops.open) {
          stream.stream_ops.open(stream);
        }
        if (Module['logReadFiles'] && !(flags & 1)) {
          if (!(path in FS.readFiles)) {
            FS.readFiles[path] = 1;
          }
        }
        return stream;
      },
  close(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(stream) {
        return stream.fd === null;
      },
  llseek(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(stream, buffer, offset, length, position) {
        assert(offset >= 0);
        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(stream, buffer, offset, length, position, canOwn) {
        assert(offset >= 0);
        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;
        return bytesWritten;
      },
  allocate(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(stream, 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);
        }
        if (!length) {
          throw new FS.ErrnoError(28);
        }
        return stream.stream_ops.mmap(stream, length, position, prot, flags);
      },
  msync(stream, buffer, offset, length, mmapFlags) {
        assert(offset >= 0);
        if (!stream.stream_ops.msync) {
          return 0;
        }
        return stream.stream_ops.msync(stream, buffer, offset, length, mmapFlags);
      },
  ioctl(stream, cmd, arg) {
        if (!stream.stream_ops.ioctl) {
          throw new FS.ErrnoError(59);
        }
        return stream.stream_ops.ioctl(stream, cmd, arg);
      },
  readFile(path, 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);
        } else if (opts.encoding === 'binary') {
          ret = buf;
        }
        FS.close(stream);
        return ret;
      },
  writeFile(path, data, 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:() => FS.currentPath,
  chdir(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() {
        FS.mkdir('/tmp');
        FS.mkdir('/home');
        FS.mkdir('/home/web_user');
      },
  createDefaultDevices() {
        // create /dev
        FS.mkdir('/dev');
        // setup /dev/null
        FS.registerDevice(FS.makedev(1, 3), {
          read: () => 0,
          write: (stream, buffer, offset, length, pos) => length,
          llseek: () => 0,
        });
        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
        // use a buffer to avoid overhead of individual crypto calls per byte
        var randomBuffer = new Uint8Array(1024), randomLeft = 0;
        var randomByte = () => {
          if (randomLeft === 0) {
            randomLeft = randomFill(randomBuffer).byteLength;
          }
          return randomBuffer[--randomLeft];
        };
        FS.createDevice('/dev', 'random', randomByte);
        FS.createDevice('/dev', 'urandom', randomByte);
        // 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() {
        // 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() {
            var node = FS.createNode(proc_self, 'fd', 16895, 73);
            node.node_ops = {
              lookup(parent, name) {
                var fd = +name;
                var stream = FS.getStreamChecked(fd);
                var ret = {
                  parent: null,
                  mount: { mountpoint: 'fake' },
                  node_ops: { readlink: () => stream.path },
                };
                ret.parent = ret; // make it look like a simple root node
                return ret;
              }
            };
            return node;
          }
        }, {}, '/proc/self/fd');
      },
  createStandardStreams(input, output, error) {
        // 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 (input) {
          FS.createDevice('/dev', 'stdin', input);
        } else {
          FS.symlink('/dev/tty', '/dev/stdin');
        }
        if (output) {
          FS.createDevice('/dev', 'stdout', null, output);
        } else {
          FS.symlink('/dev/tty', '/dev/stdout');
        }
        if (error) {
          FS.createDevice('/dev', 'stderr', null, error);
        } 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})`);
      },
  staticInit() {
        FS.nameTable = new Array(4096);
  
        FS.mount(MEMFS, {}, '/');
  
        FS.createDefaultDirectories();
        FS.createDefaultDevices();
        FS.createSpecialDirectories();
  
        FS.filesystems = {
          'MEMFS': MEMFS,
        };
      },
  init(input, output, error) {
        assert(!FS.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.initialized = true;
  
        // Allow Module.stdin etc. to provide defaults, if none explicitly passed to us here
        input ??= Module['stdin'];
        output ??= Module['stdout'];
        error ??= Module['stderr'];
  
        FS.createStandardStreams(input, output, error);
      },
  quit() {
        FS.initialized = false;
        // force-flush all streams, so we get musl std streams printed out
        _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);
        }
      },
  findObject(path, dontResolveLastLink) {
        var ret = FS.analyzePath(path, dontResolveLastLink);
        if (!ret.exists) {
          return null;
        }
        return ret.object;
      },
  analyzePath(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(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(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(parent, name, data, canRead, canWrite, canOwn) {
        var path = name;
        if (parent) {
          parent = typeof parent == 'string' ? parent : FS.getPath(parent);
          path = name ? PATH.join2(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);
        }
      },
  createDevice(parent, name, input, output) {
        var path = PATH.join2(typeof parent == 'string' ? parent : FS.getPath(parent), name);
        var mode = FS_getMode(!!input, !!output);
        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(stream) {
            stream.seekable = false;
          },
          close(stream) {
            // flush any pending line data
            if (output?.buffer?.length) {
              output(10);
            }
          },
          read(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(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(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 { // Command-line.
          try {
            obj.contents = readBinary(obj.url);
            obj.usedBytes = obj.contents.length;
          } catch (e) {
            throw new FS.ErrnoError(29);
          }
        }
      },
  createLazyFile(parent, name, url, canRead, canWrite) {
        // Lazy chunked Uint8Array (implements get and length from Uint8Array).
        // Actual getting is abstracted away for eventual reuse.
        class LazyUint8Array {
          lengthKnown = false;
          chunks = []; // Loaded chunks. Index is the chunk number
          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];
          }
          setDataGetter(getter) {
            this.getter = getter;
          }
          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 = (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.
              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 || []));
              }
              return intArrayFromString(xhr.responseText || '', true);
            };
            var lazyArray = this;
            lazyArray.setDataGetter((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;
          }
          get length() {
            if (!this.lengthKnown) {
              this.cacheLength();
            }
            return this._length;
          }
          get chunkSize() {
            if (!this.lengthKnown) {
              this.cacheLength();
            }
            return this._chunkSize;
          }
        }
  
        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();
          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: 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((key) => {
          var fn = node.stream_ops[key];
          stream_ops[key] = (...args) => {
            FS.forceLoadFile(node);
            return fn(...args);
          };
        });
        function writeChunks(stream, buffer, offset, length, position) {
          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;
        }
        // use a custom read function
        stream_ops.read = (stream, buffer, offset, length, position) => {
          FS.forceLoadFile(node);
          return writeChunks(stream, buffer, offset, length, position)
        };
        // use a custom mmap function
        stream_ops.mmap = (stream, length, position, prot, flags) => {
          FS.forceLoadFile(node);
          var ptr = mmapAlloc(length);
          if (!ptr) {
            throw new FS.ErrnoError(48);
          }
          writeChunks(stream, HEAP8, ptr, length, position);
          return { ptr, allocated: true };
        };
        node.stream_ops = stream_ops;
        return node;
      },
  absolutePath() {
        abort('FS.absolutePath has been removed; use PATH_FS.resolve instead');
      },
  createFolder() {
        abort('FS.createFolder has been removed; use FS.mkdir instead');
      },
  createLink() {
        abort('FS.createLink has been removed; use FS.symlink instead');
      },
  joinPath() {
        abort('FS.joinPath has been removed; use PATH.join instead');
      },
  mmapAlloc() {
        abort('FS.mmapAlloc has been replaced by the top level function mmapAlloc');
      },
  standardizePath() {
        abort('FS.standardizePath has been removed; use PATH.normalize instead');
      },
  };
  
  var SYSCALLS = {
  DEFAULT_POLLMASK:5,
  calculateAt(dirfd, path, allowEmpty) {
        if (PATH.isAbs(path)) {
          return path;
        }
        // relative path
        var dir;
        if (dirfd === -100) {
          dir = FS.cwd();
        } else {
          var dirstream = SYSCALLS.getStreamFromFD(dirfd);
          dir = dirstream.path;
        }
        if (path.length == 0) {
          if (!allowEmpty) {
            throw new FS.ErrnoError(44);;
          }
          return dir;
        }
        return PATH.join2(dir, path);
      },
  doStat(func, path, buf) {
        var stat = func(path);
        HEAP32[((buf)>>2)] = stat.dev;
        HEAP32[(((buf)+(4))>>2)] = stat.mode;
        HEAPU32[(((buf)+(8))>>2)] = stat.nlink;
        HEAP32[(((buf)+(12))>>2)] = stat.uid;
        HEAP32[(((buf)+(16))>>2)] = stat.gid;
        HEAP32[(((buf)+(20))>>2)] = stat.rdev;
        (tempI64 = [stat.size>>>0,(tempDouble = stat.size,(+(Math.abs(tempDouble))) >= 1.0 ? (tempDouble > 0.0 ? (+(Math.floor((tempDouble)/4294967296.0)))>>>0 : (~~((+(Math.ceil((tempDouble - +(((~~(tempDouble)))>>>0))/4294967296.0)))))>>>0) : 0)], HEAP32[(((buf)+(24))>>2)] = tempI64[0],HEAP32[(((buf)+(28))>>2)] = tempI64[1]);
        HEAP32[(((buf)+(32))>>2)] = 4096;
        HEAP32[(((buf)+(36))>>2)] = stat.blocks;
        var atime = stat.atime.getTime();
        var mtime = stat.mtime.getTime();
        var ctime = stat.ctime.getTime();
        (tempI64 = [Math.floor(atime / 1000)>>>0,(tempDouble = Math.floor(atime / 1000),(+(Math.abs(tempDouble))) >= 1.0 ? (tempDouble > 0.0 ? (+(Math.floor((tempDouble)/4294967296.0)))>>>0 : (~~((+(Math.ceil((tempDouble - +(((~~(tempDouble)))>>>0))/4294967296.0)))))>>>0) : 0)], HEAP32[(((buf)+(40))>>2)] = tempI64[0],HEAP32[(((buf)+(44))>>2)] = tempI64[1]);
        HEAPU32[(((buf)+(48))>>2)] = (atime % 1000) * 1000 * 1000;
        (tempI64 = [Math.floor(mtime / 1000)>>>0,(tempDouble = Math.floor(mtime / 1000),(+(Math.abs(tempDouble))) >= 1.0 ? (tempDouble > 0.0 ? (+(Math.floor((tempDouble)/4294967296.0)))>>>0 : (~~((+(Math.ceil((tempDouble - +(((~~(tempDouble)))>>>0))/4294967296.0)))))>>>0) : 0)], HEAP32[(((buf)+(56))>>2)] = tempI64[0],HEAP32[(((buf)+(60))>>2)] = tempI64[1]);
        HEAPU32[(((buf)+(64))>>2)] = (mtime % 1000) * 1000 * 1000;
        (tempI64 = [Math.floor(ctime / 1000)>>>0,(tempDouble = Math.floor(ctime / 1000),(+(Math.abs(tempDouble))) >= 1.0 ? (tempDouble > 0.0 ? (+(Math.floor((tempDouble)/4294967296.0)))>>>0 : (~~((+(Math.ceil((tempDouble - +(((~~(tempDouble)))>>>0))/4294967296.0)))))>>>0) : 0)], HEAP32[(((buf)+(72))>>2)] = tempI64[0],HEAP32[(((buf)+(76))>>2)] = tempI64[1]);
        HEAPU32[(((buf)+(80))>>2)] = (ctime % 1000) * 1000 * 1000;
        (tempI64 = [stat.ino>>>0,(tempDouble = stat.ino,(+(Math.abs(tempDouble))) >= 1.0 ? (tempDouble > 0.0 ? (+(Math.floor((tempDouble)/4294967296.0)))>>>0 : (~~((+(Math.ceil((tempDouble - +(((~~(tempDouble)))>>>0))/4294967296.0)))))>>>0) : 0)], HEAP32[(((buf)+(88))>>2)] = tempI64[0],HEAP32[(((buf)+(92))>>2)] = tempI64[1]);
        return 0;
      },
  doMsync(addr, stream, len, flags, offset) {
        if (!FS.isFile(stream.node.mode)) {
          throw new FS.ErrnoError(43);
        }
        if (flags & 2) {
          // MAP_PRIVATE calls need not to be synced back to underlying fs
          return 0;
        }
        var buffer = HEAPU8.slice(addr, addr + len);
        FS.msync(stream, buffer, offset, len, flags);
      },
  getStreamFromFD(fd) {
        var stream = FS.getStreamChecked(fd);
        return stream;
      },
  varargs:undefined,
  getStr(ptr) {
        var ret = UTF8ToString(ptr);
        return ret;
      },
  };
  function ___syscall_fcntl64(fd, cmd, varargs) {
  SYSCALLS.varargs = varargs;
  try {
  
      var stream = SYSCALLS.getStreamFromFD(fd);
      switch (cmd) {
        case 0: {
          var arg = syscallGetVarargI();
          if (arg < 0) {
            return -28;
          }
          while (FS.streams[arg]) {
            arg++;
          }
          var newStream;
          newStream = FS.dupStream(stream, 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 = syscallGetVarargI();
          stream.flags |= arg;
          return 0;
        }
        case 12: {
          var arg = syscallGetVarargP();
          var offset = 0;
          // We're always unlocked.
          HEAP16[(((arg)+(offset))>>1)] = 2;
          return 0;
        }
        case 13:
        case 14:
          return 0; // Pretend that the locking is successful.
      }
      return -28;
    } catch (e) {
    if (typeof FS == 'undefined' || !(e.name === 'ErrnoError')) throw e;
    return -e.errno;
  }
  }

  
  function ___syscall_ioctl(fd, op, varargs) {
  SYSCALLS.varargs = varargs;
  try {
  
      var stream = SYSCALLS.getStreamFromFD(fd);
      switch (op) {
        case 21509: {
          if (!stream.tty) return -59;
          return 0;
        }
        case 21505: {
          if (!stream.tty) return -59;
          if (stream.tty.ops.ioctl_tcgets) {
            var termios = stream.tty.ops.ioctl_tcgets(stream);
            var argp = syscallGetVarargP();
            HEAP32[((argp)>>2)] = termios.c_iflag || 0;
            HEAP32[(((argp)+(4))>>2)] = termios.c_oflag || 0;
            HEAP32[(((argp)+(8))>>2)] = termios.c_cflag || 0;
            HEAP32[(((argp)+(12))>>2)] = termios.c_lflag || 0;
            for (var i = 0; i < 32; i++) {
              HEAP8[(argp + i)+(17)] = termios.c_cc[i] || 0;
            }
            return 0;
          }
          return 0;
        }
        case 21510:
        case 21511:
        case 21512: {
          if (!stream.tty) return -59;
          return 0; // no-op, not actually adjusting terminal settings
        }
        case 21506:
        case 21507:
        case 21508: {
          if (!stream.tty) return -59;
          if (stream.tty.ops.ioctl_tcsets) {
            var argp = syscallGetVarargP();
            var c_iflag = HEAP32[((argp)>>2)];
            var c_oflag = HEAP32[(((argp)+(4))>>2)];
            var c_cflag = HEAP32[(((argp)+(8))>>2)];
            var c_lflag = HEAP32[(((argp)+(12))>>2)];
            var c_cc = []
            for (var i = 0; i < 32; i++) {
              c_cc.push(HEAP8[(argp + i)+(17)]);
            }
            return stream.tty.ops.ioctl_tcsets(stream.tty, op, { c_iflag, c_oflag, c_cflag, c_lflag, c_cc });
          }
          return 0; // no-op, not actually adjusting terminal settings
        }
        case 21519: {
          if (!stream.tty) return -59;
          var argp = syscallGetVarargP();
          HEAP32[((argp)>>2)] = 0;
          return 0;
        }
        case 21520: {
          if (!stream.tty) return -59;
          return -28; // not supported
        }
        case 21531: {
          var argp = syscallGetVarargP();
          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;
          if (stream.tty.ops.ioctl_tiocgwinsz) {
            var winsize = stream.tty.ops.ioctl_tiocgwinsz(stream.tty);
            var argp = syscallGetVarargP();
            HEAP16[((argp)>>1)] = winsize[0];
            HEAP16[(((argp)+(2))>>1)] = winsize[1];
          }
          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;
        }
        case 21515: {
          if (!stream.tty) return -59;
          return 0;
        }
        default: return -28; // not supported
      }
    } catch (e) {
    if (typeof FS == 'undefined' || !(e.name === 'ErrnoError')) throw e;
    return -e.errno;
  }
  }

  
  function ___syscall_openat(dirfd, path, flags, varargs) {
  SYSCALLS.varargs = varargs;
  try {
  
      path = SYSCALLS.getStr(path);
      path = SYSCALLS.calculateAt(dirfd, path);
      var mode = varargs ? syscallGetVarargI() : 0;
      return FS.open(path, flags, mode).fd;
    } catch (e) {
    if (typeof FS == 'undefined' || !(e.name === 'ErrnoError')) throw e;
    return -e.errno;
  }
  }

  var __abort_js = () =>
      abort('native code called abort()');

  var __emscripten_memcpy_js = (dest, src, num) => HEAPU8.copyWithin(dest, src, src + num);

  var 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);
    };
  
  var __tzset_js = (timezone, daylight, std_name, dst_name) => {
      // TODO: Use (malleable) environment variables instead of system settings.
      var currentYear = new Date().getFullYear();
      var winter = new Date(currentYear, 0, 1);
      var summer = new Date(currentYear, 6, 1);
      var winterOffset = winter.getTimezoneOffset();
      var summerOffset = summer.getTimezoneOffset();
  
      // Local standard timezone offset. Local standard time is not adjusted for
      // daylight savings.  This code uses the fact that getTimezoneOffset returns
      // a greater value during Standard Time versus Daylight Saving Time (DST).
      // Thus it determines the expected output during Standard Time, and it
      // compares whether the output of the given date the same (Standard) or less
      // (DST).
      var stdTimezoneOffset = Math.max(winterOffset, summerOffset);
  
      // timezone is specified as seconds west of UTC ("The external variable
      // `timezone` shall be set to the difference, in seconds, between
      // Coordinated Universal Time (UTC) and local standard time."), the same
      // as returned by stdTimezoneOffset.
      // See http://pubs.opengroup.org/onlinepubs/009695399/functions/tzset.html
      HEAPU32[((timezone)>>2)] = stdTimezoneOffset * 60;
  
      HEAP32[((daylight)>>2)] = Number(winterOffset != summerOffset);
  
      var extractZone = (timezoneOffset) => {
        // Why inverse sign?
        // Read here https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Date/getTimezoneOffset
        var sign = timezoneOffset >= 0 ? "-" : "+";
  
        var absOffset = Math.abs(timezoneOffset)
        var hours = String(Math.floor(absOffset / 60)).padStart(2, "0");
        var minutes = String(absOffset % 60).padStart(2, "0");
  
        return `UTC${sign}${hours}${minutes}`;
      }
  
      var winterName = extractZone(winterOffset);
      var summerName = extractZone(summerOffset);
      assert(winterName);
      assert(summerName);
      assert(lengthBytesUTF8(winterName) <= 16, `timezone name truncated to fit in TZNAME_MAX (${winterName})`);
      assert(lengthBytesUTF8(summerName) <= 16, `timezone name truncated to fit in TZNAME_MAX (${summerName})`);
      if (summerOffset < winterOffset) {
        // Northern hemisphere
        stringToUTF8(winterName, std_name, 17);
        stringToUTF8(summerName, dst_name, 17);
      } else {
        stringToUTF8(winterName, dst_name, 17);
        stringToUTF8(summerName, std_name, 17);
      }
    };

  var getHeapMax = () =>
      HEAPU8.length;
  
  
  var abortOnCannotGrowMemory = (requestedSize) => {
      abort(`Cannot enlarge memory arrays to size ${requestedSize} bytes (OOM). Either (1) compile with -sINITIAL_MEMORY=X with X higher than the current value ${HEAP8.length}, (2) compile with -sALLOW_MEMORY_GROWTH which allows increasing the size at runtime, or (3) if you want malloc to return NULL (0) instead of this abort, compile with -sABORTING_MALLOC=0`);
    };
  var _emscripten_resize_heap = (requestedSize) => {
      var oldSize = HEAPU8.length;
      // With CAN_ADDRESS_2GB or MEMORY64, pointers are already unsigned.
      requestedSize >>>= 0;
      abortOnCannotGrowMemory(requestedSize);
    };

  
  var handleException = (e) => {
      // Certain exception types we do not treat as errors since they are used for
      // internal control flow.
      // 1. ExitStatus, which is thrown by exit()
      // 2. "unwind", which is thrown by emscripten_unwind_to_js_event_loop() and others
      //    that wish to return to JS event loop.
      if (e instanceof ExitStatus || e == 'unwind') {
        return EXITSTATUS;
      }
      checkStackCookie();
      if (e instanceof WebAssembly.RuntimeError) {
        if (_emscripten_stack_get_current() <= 0) {
          err('Stack overflow detected.  You can try increasing -sSTACK_SIZE (currently set to 65536)');
        }
      }
      quit_(1, e);
    };
  
  
  var runtimeKeepaliveCounter = 0;
  var keepRuntimeAlive = () => noExitRuntime || runtimeKeepaliveCounter > 0;
  var _proc_exit = (code) => {
      EXITSTATUS = code;
      if (!keepRuntimeAlive()) {
        Module['onExit']?.(code);
        ABORT = true;
      }
      quit_(code, new ExitStatus(code));
    };
  
  
  /** @suppress {duplicate } */
  /** @param {boolean|number=} implicit */
  var exitJS = (status, implicit) => {
      EXITSTATUS = status;
  
      checkUnflushedContent();
  
      // if exit() was called explicitly, warn the user if the runtime isn't actually being shut down
      if (keepRuntimeAlive() && !implicit) {
        var msg = `program exited (with status: ${status}), but keepRuntimeAlive() is set (counter=${runtimeKeepaliveCounter}) due to an async operation, so halting execution but not exiting the runtime or preventing further async execution (you can use emscripten_force_exit, if you want to force a true shutdown)`;
        err(msg);
      }
  
      _proc_exit(status);
    };
  var _exit = exitJS;
  
  
  var maybeExit = () => {
      if (!keepRuntimeAlive()) {
        try {
          _exit(EXITSTATUS);
        } catch (e) {
          handleException(e);
        }
      }
    };
  var callUserCallback = (func) => {
      if (ABORT) {
        err('user callback triggered after runtime exited or application aborted.  Ignoring.');
        return;
      }
      try {
        func();
        maybeExit();
      } catch (e) {
        handleException(e);
      }
    };
  
  var _emscripten_set_main_loop_timing = (mode, value) => {
      MainLoop.timingMode = mode;
      MainLoop.timingValue = value;
  
      if (!MainLoop.func) {
        err('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 (!MainLoop.running) {
        
        MainLoop.running = true;
      }
      if (mode == 0) {
        MainLoop.scheduler = function MainLoop_scheduler_setTimeout() {
          var timeUntilNextTick = Math.max(0, MainLoop.tickStartTime + value - _emscripten_get_now())|0;
          setTimeout(MainLoop.runner, timeUntilNextTick); // doing this each time means that on exception, we stop
        };
        MainLoop.method = 'timeout';
      } else if (mode == 1) {
        MainLoop.scheduler = function MainLoop_scheduler_rAF() {
          MainLoop.requestAnimationFrame(MainLoop.runner);
        };
        MainLoop.method = 'rAF';
      } else if (mode == 2) {
        if (typeof MainLoop.setImmediate == 'undefined') {
          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';
            /** @param {Event} event */
            var MainLoop_setImmediate_messageHandler = (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", MainLoop_setImmediate_messageHandler, true);
            MainLoop.setImmediate = /** @type{function(function(): ?, ...?): number} */((func) => {
              setImmediates.push(func);
              if (ENVIRONMENT_IS_WORKER) {
                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.
            });
          } else {
            MainLoop.setImmediate = setImmediate;
          }
        }
        MainLoop.scheduler = function MainLoop_scheduler_setImmediate() {
          MainLoop.setImmediate(MainLoop.runner);
        };
        MainLoop.method = 'immediate';
      }
      return 0;
    };
  var MainLoop = {
  running:false,
  scheduler:null,
  method:"",
  currentlyRunningMainloop:0,
  func:null,
  arg:0,
  timingMode:0,
  timingValue:0,
  currentFrameNumber:0,
  queue:[],
  preMainLoop:[],
  postMainLoop:[],
  pause() {
        MainLoop.scheduler = null;
        // Incrementing this signals the previous main loop that it's now become old, and it must return.
        MainLoop.currentlyRunningMainloop++;
      },
  resume() {
        MainLoop.currentlyRunningMainloop++;
        var timingMode = MainLoop.timingMode;
        var timingValue = MainLoop.timingValue;
        var func = MainLoop.func;
        MainLoop.func = null;
        // do not set timing and call scheduler, we will do it on the next lines
        setMainLoop(func, 0, false, MainLoop.arg, true);
        _emscripten_set_main_loop_timing(timingMode, timingValue);
        MainLoop.scheduler();
      },
  updateStatus() {
        if (Module['setStatus']) {
          var message = Module['statusMessage'] || 'Please wait...';
          var remaining = MainLoop.remainingBlockers ?? 0;
          var expected = MainLoop.expectedBlockers ?? 0;
          if (remaining) {
            if (remaining < expected) {
              Module['setStatus'](`{message} ({expected - remaining}/{expected})`);
            } else {
              Module['setStatus'](message);
            }
          } else {
            Module['setStatus']('');
          }
        }
      },
  init() {
        Module['preMainLoop'] && MainLoop.preMainLoop.push(Module['preMainLoop']);
        Module['postMainLoop'] && MainLoop.postMainLoop.push(Module['postMainLoop']);
      },
  runIter(func) {
        if (ABORT) return;
        for (var pre of MainLoop.preMainLoop) {
          if (pre() === false) {
            return; // |return false| skips a frame
          }
        }
        callUserCallback(func);
        for (var post of MainLoop.postMainLoop) {
          post();
        }
        checkStackCookie();
      },
  nextRAF:0,
  fakeRequestAnimationFrame(func) {
        // try to keep 60fps between calls to here
        var now = Date.now();
        if (MainLoop.nextRAF === 0) {
          MainLoop.nextRAF = now + 1000/60;
        } else {
          while (now + 2 >= MainLoop.nextRAF) { // fudge a little, to avoid timer jitter causing us to do lots of delay:0
            MainLoop.nextRAF += 1000/60;
          }
        }
        var delay = Math.max(MainLoop.nextRAF - now, 0);
        setTimeout(func, delay);
      },
  requestAnimationFrame(func) {
        if (typeof requestAnimationFrame == 'function') {
          requestAnimationFrame(func);
          return;
        }
        var RAF = MainLoop.fakeRequestAnimationFrame;
        RAF(func);
      },
  };
  
  
  var _emscripten_get_now = () => performance.now();
  
  
    /**
     * @param {number=} arg
     * @param {boolean=} noSetTiming
     */
  var setMainLoop = (iterFunc, fps, simulateInfiniteLoop, arg, noSetTiming) => {
      assert(!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.');
      MainLoop.func = iterFunc;
      MainLoop.arg = arg;
  
      var thisMainLoopId = MainLoop.currentlyRunningMainloop;
      function checkIsRunning() {
        if (thisMainLoopId < 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.
      MainLoop.running = false;
      MainLoop.runner = function MainLoop_runner() {
        if (ABORT) return;
        if (MainLoop.queue.length > 0) {
          var start = Date.now();
          var blocker = MainLoop.queue.shift();
          blocker.func(blocker.arg);
          if (MainLoop.remainingBlockers) {
            var remaining = MainLoop.remainingBlockers;
            var next = remaining%1 == 0 ? remaining-1 : Math.floor(remaining);
            if (blocker.counted) {
              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
              MainLoop.remainingBlockers = (8*remaining + next)/9;
            }
          }
          MainLoop.updateStatus();
  
          // catches pause/resume main loop from blocker execution
          if (!checkIsRunning()) return;
  
          setTimeout(MainLoop.runner, 0);
          return;
        }
  
        // catch pauses from non-main loop sources
        if (!checkIsRunning()) return;
  
        // Implement very basic swap interval control
        MainLoop.currentFrameNumber = MainLoop.currentFrameNumber + 1 | 0;
        if (MainLoop.timingMode == 1 && MainLoop.timingValue > 1 && MainLoop.currentFrameNumber % MainLoop.timingValue != 0) {
          // Not the scheduled time to render this frame - skip.
          MainLoop.scheduler();
          return;
        } else if (MainLoop.timingMode == 0) {
          MainLoop.tickStartTime = _emscripten_get_now();
        }
  
        if (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!');
          MainLoop.method = ''; // just warn once per call to set main loop
        }
  
        MainLoop.runIter(iterFunc);
  
        // catch pauses from the main loop itself
        if (!checkIsRunning()) return;
  
        MainLoop.scheduler();
      }
  
      if (!noSetTiming) {
        if (fps && fps > 0) {
          _emscripten_set_main_loop_timing(0, 1000.0 / fps);
        } else {
          // Do rAF by rendering each frame (no decimating)
          _emscripten_set_main_loop_timing(1, 1);
        }
  
        MainLoop.scheduler();
      }
  
      if (simulateInfiniteLoop) {
        throw 'unwind';
      }
    };
  
  var wasmTableMirror = [];
  
  /** @type {WebAssembly.Table} */
  var wasmTable;
  var getWasmTableEntry = (funcPtr) => {
      var func = wasmTableMirror[funcPtr];
      if (!func) {
        if (funcPtr >= wasmTableMirror.length) wasmTableMirror.length = funcPtr + 1;
        /** @suppress {checkTypes} */
        wasmTableMirror[funcPtr] = func = wasmTable.get(funcPtr);
      }
      /** @suppress {checkTypes} */
      assert(wasmTable.get(funcPtr) == func, 'JavaScript-side Wasm function table mirror is out of date!');
      return func;
    };
  var _emscripten_set_main_loop_arg = (func, arg, fps, simulateInfiniteLoop) => {
      var iterFunc = () => getWasmTableEntry(func)(arg);
      setMainLoop(iterFunc, fps, simulateInfiniteLoop, arg);
    };

  var ENV = {
  };
  
  var getExecutableName = () => thisProgram || './this.program';
  var getEnvStrings = () => {
      if (!getEnvStrings.strings) {
        // Default values.
        // Browser language detection #8751
        var lang = ((typeof navigator == 'object' && navigator.languages && navigator.languages[0]) || 'C').replace('-', '_') + '.UTF-8';
        var env = {
          'USER': 'web_user',
          'LOGNAME': 'web_user',
          'PATH': '/',
          'PWD': '/',
          'HOME': '/home/web_user',
          'LANG': lang,
          '_': getExecutableName()
        };
        // Apply the user-provided values, if any.
        for (var x in ENV) {
          // x is a key in ENV; if ENV[x] is undefined, that means it was
          // explicitly set to be so. We allow user code to do that to
          // force variables with default values to remain unset.
          if (ENV[x] === undefined) delete env[x];
          else env[x] = ENV[x];
        }
        var strings = [];
        for (var x in env) {
          strings.push(`${x}=${env[x]}`);
        }
        getEnvStrings.strings = strings;
      }
      return getEnvStrings.strings;
    };
  
  var stringToAscii = (str, buffer) => {
      for (var i = 0; i < str.length; ++i) {
        assert(str.charCodeAt(i) === (str.charCodeAt(i) & 0xff));
        HEAP8[buffer++] = str.charCodeAt(i);
      }
      // Null-terminate the string
      HEAP8[buffer] = 0;
    };
  var _environ_get = (__environ, environ_buf) => {
      var bufSize = 0;
      getEnvStrings().forEach((string, i) => {
        var ptr = environ_buf + bufSize;
        HEAPU32[(((__environ)+(i*4))>>2)] = ptr;
        stringToAscii(string, ptr);
        bufSize += string.length + 1;
      });
      return 0;
    };

  var _environ_sizes_get = (penviron_count, penviron_buf_size) => {
      var strings = getEnvStrings();
      HEAPU32[((penviron_count)>>2)] = strings.length;
      var bufSize = 0;
      strings.forEach((string) => bufSize += string.length + 1);
      HEAPU32[((penviron_buf_size)>>2)] = bufSize;
      return 0;
    };

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

  /** @param {number=} offset */
  var doReadv = (stream, iov, iovcnt, offset) => {
      var ret = 0;
      for (var i = 0; i < iovcnt; i++) {
        var ptr = HEAPU32[((iov)>>2)];
        var len = HEAPU32[(((iov)+(4))>>2)];
        iov += 8;
        var curr = FS.read(stream, HEAP8, ptr, len, offset);
        if (curr < 0) return -1;
        ret += curr;
        if (curr < len) break; // nothing more to read
        if (typeof offset != 'undefined') {
          offset += curr;
        }
      }
      return ret;
    };
  
  function _fd_read(fd, iov, iovcnt, pnum) {
  try {
  
      var stream = SYSCALLS.getStreamFromFD(fd);
      var num = doReadv(stream, iov, iovcnt);
      HEAPU32[((pnum)>>2)] = num;
      return 0;
    } catch (e) {
    if (typeof FS == 'undefined' || !(e.name === 'ErrnoError')) throw e;
    return e.errno;
  }
  }

  
  var convertI32PairToI53Checked = (lo, hi) => {
      assert(lo == (lo >>> 0) || lo == (lo|0)); // lo should either be a i32 or a u32
      assert(hi === (hi|0));                    // hi should be a i32
      return ((hi + 0x200000) >>> 0 < 0x400001 - !!lo) ? (lo >>> 0) + hi * 4294967296 : NaN;
    };
  function _fd_seek(fd,offset_low, offset_high,whence,newOffset) {
    var offset = convertI32PairToI53Checked(offset_low, offset_high);
  
    
  try {
  
      if (isNaN(offset)) return 61;
      var stream = SYSCALLS.getStreamFromFD(fd);
      FS.llseek(stream, offset, whence);
      (tempI64 = [stream.position>>>0,(tempDouble = stream.position,(+(Math.abs(tempDouble))) >= 1.0 ? (tempDouble > 0.0 ? (+(Math.floor((tempDouble)/4294967296.0)))>>>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.name === 'ErrnoError')) throw e;
    return e.errno;
  }
  ;
  }

  /** @param {number=} offset */
  var doWritev = (stream, iov, iovcnt, offset) => {
      var ret = 0;
      for (var i = 0; i < iovcnt; i++) {
        var ptr = HEAPU32[((iov)>>2)];
        var len = HEAPU32[(((iov)+(4))>>2)];
        iov += 8;
        var curr = FS.write(stream, HEAP8, ptr, len, offset);
        if (curr < 0) return -1;
        ret += curr;
        if (curr < len) {
          // No more space to write.
          break;
        }
        if (typeof offset != 'undefined') {
          offset += curr;
        }
      }
      return ret;
    };
  
  function _fd_write(fd, iov, iovcnt, pnum) {
  try {
  
      var stream = SYSCALLS.getStreamFromFD(fd);
      var num = doWritev(stream, iov, iovcnt);
      HEAPU32[((pnum)>>2)] = num;
      return 0;
    } catch (e) {
    if (typeof FS == 'undefined' || !(e.name === 'ErrnoError')) throw e;
    return e.errno;
  }
  }

  var GLctx;
  
  var webgl_enable_ANGLE_instanced_arrays = (ctx) => {
      // Extension available in WebGL 1 from Firefox 26 and Google Chrome 30 onwards. Core feature in WebGL 2.
      var ext = ctx.getExtension('ANGLE_instanced_arrays');
      // Because this extension is a core function in WebGL 2, assign the extension entry points in place of
      // where the core functions will reside in WebGL 2. This way the calling code can call these without
      // having to dynamically branch depending if running against WebGL 1 or WebGL 2.
      if (ext) {
        ctx['vertexAttribDivisor'] = (index, divisor) => ext['vertexAttribDivisorANGLE'](index, divisor);
        ctx['drawArraysInstanced'] = (mode, first, count, primcount) => ext['drawArraysInstancedANGLE'](mode, first, count, primcount);
        ctx['drawElementsInstanced'] = (mode, count, type, indices, primcount) => ext['drawElementsInstancedANGLE'](mode, count, type, indices, primcount);
        return 1;
      }
    };
  
  var webgl_enable_OES_vertex_array_object = (ctx) => {
      // Extension available in WebGL 1 from Firefox 25 and WebKit 536.28/desktop Safari 6.0.3 onwards. Core feature in WebGL 2.
      var ext = ctx.getExtension('OES_vertex_array_object');
      if (ext) {
        ctx['createVertexArray'] = () => ext['createVertexArrayOES']();
        ctx['deleteVertexArray'] = (vao) => ext['deleteVertexArrayOES'](vao);
        ctx['bindVertexArray'] = (vao) => ext['bindVertexArrayOES'](vao);
        ctx['isVertexArray'] = (vao) => ext['isVertexArrayOES'](vao);
        return 1;
      }
    };
  
  var webgl_enable_WEBGL_draw_buffers = (ctx) => {
      // Extension available in WebGL 1 from Firefox 28 onwards. Core feature in WebGL 2.
      var ext = ctx.getExtension('WEBGL_draw_buffers');
      if (ext) {
        ctx['drawBuffers'] = (n, bufs) => ext['drawBuffersWEBGL'](n, bufs);
        return 1;
      }
    };
  
  var webgl_enable_WEBGL_draw_instanced_base_vertex_base_instance = (ctx) =>
      // Closure is expected to be allowed to minify the '.dibvbi' property, so not accessing it quoted.
      !!(ctx.dibvbi = ctx.getExtension('WEBGL_draw_instanced_base_vertex_base_instance'));
  
  var webgl_enable_WEBGL_multi_draw_instanced_base_vertex_base_instance = (ctx) => {
      // Closure is expected to be allowed to minify the '.mdibvbi' property, so not accessing it quoted.
      return !!(ctx.mdibvbi = ctx.getExtension('WEBGL_multi_draw_instanced_base_vertex_base_instance'));
    };
  
  var webgl_enable_EXT_polygon_offset_clamp = (ctx) =>
      !!(ctx.extPolygonOffsetClamp = ctx.getExtension('EXT_polygon_offset_clamp'));
  
  var webgl_enable_EXT_clip_control = (ctx) =>
      !!(ctx.extClipControl = ctx.getExtension('EXT_clip_control'));
  
  var webgl_enable_WEBGL_polygon_mode = (ctx) =>
      !!(ctx.webglPolygonMode = ctx.getExtension('WEBGL_polygon_mode'));
  
  var webgl_enable_WEBGL_multi_draw = (ctx) =>
      // Closure is expected to be allowed to minify the '.multiDrawWebgl' property, so not accessing it quoted.
      !!(ctx.multiDrawWebgl = ctx.getExtension('WEBGL_multi_draw'));
  
  var getEmscriptenSupportedExtensions = (ctx) => {
      // Restrict the list of advertised extensions to those that we actually
      // support.
      var supportedExtensions = [
        // WebGL 1 extensions
        'ANGLE_instanced_arrays',
        'EXT_blend_minmax',
        'EXT_disjoint_timer_query',
        'EXT_frag_depth',
        'EXT_shader_texture_lod',
        'EXT_sRGB',
        'OES_element_index_uint',
        'OES_fbo_render_mipmap',
        'OES_standard_derivatives',
        'OES_texture_float',
        'OES_texture_half_float',
        'OES_texture_half_float_linear',
        'OES_vertex_array_object',
        'WEBGL_color_buffer_float',
        'WEBGL_depth_texture',
        'WEBGL_draw_buffers',
        // WebGL 2 extensions
        'EXT_color_buffer_float',
        'EXT_conservative_depth',
        'EXT_disjoint_timer_query_webgl2',
        'EXT_texture_norm16',
        'NV_shader_noperspective_interpolation',
        'WEBGL_clip_cull_distance',
        // WebGL 1 and WebGL 2 extensions
        'EXT_clip_control',
        'EXT_color_buffer_half_float',
        'EXT_depth_clamp',
        'EXT_float_blend',
        'EXT_polygon_offset_clamp',
        'EXT_texture_compression_bptc',
        'EXT_texture_compression_rgtc',
        'EXT_texture_filter_anisotropic',
        'KHR_parallel_shader_compile',
        'OES_texture_float_linear',
        'WEBGL_blend_func_extended',
        'WEBGL_compressed_texture_astc',
        'WEBGL_compressed_texture_etc',
        'WEBGL_compressed_texture_etc1',
        'WEBGL_compressed_texture_s3tc',
        'WEBGL_compressed_texture_s3tc_srgb',
        'WEBGL_debug_renderer_info',
        'WEBGL_debug_shaders',
        'WEBGL_lose_context',
        'WEBGL_multi_draw',
        'WEBGL_polygon_mode'
      ];
      // .getSupportedExtensions() can return null if context is lost, so coerce to empty array.
      return (ctx.getSupportedExtensions() || []).filter(ext => supportedExtensions.includes(ext));
    };
  
  
  var GL = {
  counter:1,
  buffers:[],
  programs:[],
  framebuffers:[],
  renderbuffers:[],
  textures:[],
  shaders:[],
  vaos:[],
  contexts:[],
  offscreenCanvases:{
  },
  queries:[],
  samplers:[],
  transformFeedbacks:[],
  syncs:[],
  stringCache:{
  },
  stringiCache:{
  },
  unpackAlignment:4,
  unpackRowLength:0,
  recordError:(errorCode) => {
        if (!GL.lastError) {
          GL.lastError = errorCode;
        }
      },
  getNewId:(table) => {
        var ret = GL.counter++;
        for (var i = table.length; i < ret; i++) {
          table[i] = null;
        }
        return ret;
      },
  genObject:(n, buffers, createFunction, objectTable
        ) => {
        for (var i = 0; i < n; i++) {
          var buffer = GLctx[createFunction]();
          var id = buffer && GL.getNewId(objectTable);
          if (buffer) {
            buffer.name = id;
            objectTable[id] = buffer;
          } else {
            GL.recordError(0x502 /* GL_INVALID_OPERATION */);
          }
          HEAP32[(((buffers)+(i*4))>>2)] = id;
        }
      },
  getSource:(shader, count, string, length) => {
        var source = '';
        for (var i = 0; i < count; ++i) {
          var len = length ? HEAPU32[(((length)+(i*4))>>2)] : undefined;
          source += UTF8ToString(HEAPU32[(((string)+(i*4))>>2)], len);
        }
        return source;
      },
  createContext:(/** @type {HTMLCanvasElement} */ canvas, webGLContextAttributes) => {
  
        // BUG: Workaround Safari WebGL issue: After successfully acquiring WebGL
        // context on a canvas, calling .getContext() will always return that
        // context independent of which 'webgl' or 'webgl2'
        // context version was passed. See:
        //   https://bugs.webkit.org/show_bug.cgi?id=222758
        // and:
        //   https://github.com/emscripten-core/emscripten/issues/13295.
        // TODO: Once the bug is fixed and shipped in Safari, adjust the Safari
        // version field in above check.
        if (!canvas.getContextSafariWebGL2Fixed) {
          canvas.getContextSafariWebGL2Fixed = canvas.getContext;
          /** @type {function(this:HTMLCanvasElement, string, (Object|null)=): (Object|null)} */
          function fixedGetContext(ver, attrs) {
            var gl = canvas.getContextSafariWebGL2Fixed(ver, attrs);
            return ((ver == 'webgl') == (gl instanceof WebGLRenderingContext)) ? gl : null;
          }
          canvas.getContext = fixedGetContext;
        }
  
        var ctx =
          (webGLContextAttributes.majorVersion > 1)
          ?
            canvas.getContext("webgl2", webGLContextAttributes)
          :
          (canvas.getContext("webgl", webGLContextAttributes)
            // https://caniuse.com/#feat=webgl
            );
  
        if (!ctx) return 0;
  
        var handle = GL.registerContext(ctx, webGLContextAttributes);
  
        return handle;
      },
  registerContext:(ctx, webGLContextAttributes) => {
        // without pthreads a context is just an integer ID
        var handle = GL.getNewId(GL.contexts);
  
        var context = {
          handle,
          attributes: webGLContextAttributes,
          version: webGLContextAttributes.majorVersion,
          GLctx: ctx
        };
  
        // Store the created context object so that we can access the context
        // given a canvas without having to pass the parameters again.
        if (ctx.canvas) ctx.canvas.GLctxObject = context;
        GL.contexts[handle] = context;
        if (typeof webGLContextAttributes.enableExtensionsByDefault == 'undefined' || webGLContextAttributes.enableExtensionsByDefault) {
          GL.initExtensions(context);
        }
  
        return handle;
      },
  makeContextCurrent:(contextHandle) => {
  
        // Active Emscripten GL layer context object.
        GL.currentContext = GL.contexts[contextHandle];
        // Active WebGL context object.
        Module['ctx'] = GLctx = GL.currentContext?.GLctx;
        return !(contextHandle && !GLctx);
      },
  getContext:(contextHandle) => {
        return GL.contexts[contextHandle];
      },
  deleteContext:(contextHandle) => {
        if (GL.currentContext === GL.contexts[contextHandle]) {
          GL.currentContext = null;
        }
        if (typeof JSEvents == 'object') {
          // Release all JS event handlers on the DOM element that the GL context is
          // associated with since the context is now deleted.
          JSEvents.removeAllHandlersOnTarget(GL.contexts[contextHandle].GLctx.canvas);
        }
        // Make sure the canvas object no longer refers to the context object so
        // there are no GC surprises.
        if (GL.contexts[contextHandle] && GL.contexts[contextHandle].GLctx.canvas) {
          GL.contexts[contextHandle].GLctx.canvas.GLctxObject = undefined;
        }
        GL.contexts[contextHandle] = null;
      },
  initExtensions:(context) => {
        // If this function is called without a specific context object, init the
        // extensions of the currently active context.
        context ||= GL.currentContext;
  
        if (context.initExtensionsDone) return;
        context.initExtensionsDone = true;
  
        var GLctx = context.GLctx;
  
        // Detect the presence of a few extensions manually, ction GL interop
        // layer itself will need to know if they exist.
  
        // Extensions that are available in both WebGL 1 and WebGL 2
        webgl_enable_WEBGL_multi_draw(GLctx);
        webgl_enable_EXT_polygon_offset_clamp(GLctx);
        webgl_enable_EXT_clip_control(GLctx);
        webgl_enable_WEBGL_polygon_mode(GLctx);
        // Extensions that are only available in WebGL 1 (the calls will be no-ops
        // if called on a WebGL 2 context active)
        webgl_enable_ANGLE_instanced_arrays(GLctx);
        webgl_enable_OES_vertex_array_object(GLctx);
        webgl_enable_WEBGL_draw_buffers(GLctx);
        // Extensions that are available from WebGL >= 2 (no-op if called on a WebGL 1 context active)
        webgl_enable_WEBGL_draw_instanced_base_vertex_base_instance(GLctx);
        webgl_enable_WEBGL_multi_draw_instanced_base_vertex_base_instance(GLctx);
  
        // On WebGL 2, EXT_disjoint_timer_query is replaced with an alternative
        // that's based on core APIs, and exposes only the queryCounterEXT()
        // entrypoint.
        if (context.version >= 2) {
          GLctx.disjointTimerQueryExt = GLctx.getExtension("EXT_disjoint_timer_query_webgl2");
        }
  
        // However, Firefox exposes the WebGL 1 version on WebGL 2 as well and
        // thus we look for the WebGL 1 version again if the WebGL 2 version
        // isn't present. https://bugzilla.mozilla.org/show_bug.cgi?id=1328882
        if (context.version < 2 || !GLctx.disjointTimerQueryExt)
        {
          GLctx.disjointTimerQueryExt = GLctx.getExtension("EXT_disjoint_timer_query");
        }
  
        getEmscriptenSupportedExtensions(GLctx).forEach((ext) => {
          // WEBGL_lose_context, WEBGL_debug_renderer_info and WEBGL_debug_shaders
          // are not enabled by default.
          if (!ext.includes('lose_context') && !ext.includes('debug')) {
            // Call .getExtension() to enable that extension permanently.
            GLctx.getExtension(ext);
          }
        });
      },
  };
  var _glAttachShader = (program, shader) => {
      GLctx.attachShader(GL.programs[program], GL.shaders[shader]);
    };

  var _glBindBuffer = (target, buffer) => {
  
      if (target == 0x88EB /*GL_PIXEL_PACK_BUFFER*/) {
        // In WebGL 2 glReadPixels entry point, we need to use a different WebGL 2
        // API function call when a buffer is bound to
        // GL_PIXEL_PACK_BUFFER_BINDING point, so must keep track whether that
        // binding point is non-null to know what is the proper API function to
        // call.
        GLctx.currentPixelPackBufferBinding = buffer;
      } else if (target == 0x88EC /*GL_PIXEL_UNPACK_BUFFER*/) {
        // In WebGL 2 gl(Compressed)Tex(Sub)Image[23]D entry points, we need to
        // use a different WebGL 2 API function call when a buffer is bound to
        // GL_PIXEL_UNPACK_BUFFER_BINDING point, so must keep track whether that
        // binding point is non-null to know what is the proper API function to
        // call.
        GLctx.currentPixelUnpackBufferBinding = buffer;
      }
      GLctx.bindBuffer(target, GL.buffers[buffer]);
    };

  var _glBufferData = (target, size, data, usage) => {
  
      if (GL.currentContext.version >= 2) {
        // If size is zero, WebGL would interpret uploading the whole input
        // arraybuffer (starting from given offset), which would not make sense in
        // WebAssembly, so avoid uploading if size is zero. However we must still
        // call bufferData to establish a backing storage of zero bytes.
        if (data && size) {
          GLctx.bufferData(target, HEAPU8, usage, data, size);
        } else {
          GLctx.bufferData(target, size, usage);
        }
        return;
      }
      // N.b. here first form specifies a heap subarray, second form an integer
      // size, so the ?: code here is polymorphic. It is advised to avoid
      // randomly mixing both uses in calling code, to avoid any potential JS
      // engine JIT issues.
      GLctx.bufferData(target, data ? HEAPU8.subarray(data, data+size) : size, usage);
    };

  var _glClear = (x0) => GLctx.clear(x0);

  var _glClearColor = (x0, x1, x2, x3) => GLctx.clearColor(x0, x1, x2, x3);

  var _glCompileShader = (shader) => {
      GLctx.compileShader(GL.shaders[shader]);
    };

  var _glCreateProgram = () => {
      var id = GL.getNewId(GL.programs);
      var program = GLctx.createProgram();
      // Store additional information needed for each shader program:
      program.name = id;
      // Lazy cache results of
      // glGetProgramiv(GL_ACTIVE_UNIFORM_MAX_LENGTH/GL_ACTIVE_ATTRIBUTE_MAX_LENGTH/GL_ACTIVE_UNIFORM_BLOCK_MAX_NAME_LENGTH)
      program.maxUniformLength = program.maxAttributeLength = program.maxUniformBlockNameLength = 0;
      program.uniformIdCounter = 1;
      GL.programs[id] = program;
      return id;
    };

  var _glCreateShader = (shaderType) => {
      var id = GL.getNewId(GL.shaders);
      GL.shaders[id] = GLctx.createShader(shaderType);
  
      return id;
    };

  var _glDeleteShader = (id) => {
      if (!id) return;
      var shader = GL.shaders[id];
      if (!shader) {
        // glDeleteShader actually signals an error when deleting a nonexisting
        // object, unlike some other GL delete functions.
        GL.recordError(0x501 /* GL_INVALID_VALUE */);
        return;
      }
      GLctx.deleteShader(shader);
      GL.shaders[id] = null;
    };

  var _glDrawArrays = (mode, first, count) => {
  
      GLctx.drawArrays(mode, first, count);
  
    };

  var _glEnableVertexAttribArray = (index) => {
      GLctx.enableVertexAttribArray(index);
    };

  var _glGenBuffers = (n, buffers) => {
      GL.genObject(n, buffers, 'createBuffer', GL.buffers
        );
    };

  
  var _glGetShaderInfoLog = (shader, maxLength, length, infoLog) => {
      var log = GLctx.getShaderInfoLog(GL.shaders[shader]);
      if (log === null) log = '(unknown error)';
      var numBytesWrittenExclNull = (maxLength > 0 && infoLog) ? stringToUTF8(log, infoLog, maxLength) : 0;
      if (length) HEAP32[((length)>>2)] = numBytesWrittenExclNull;
    };

  var _glGetShaderiv = (shader, pname, p) => {
      if (!p) {
        // GLES2 specification does not specify how to behave if p is a null
        // pointer. Since calling this function does not make sense if p == null,
        // issue a GL error to notify user about it.
        GL.recordError(0x501 /* GL_INVALID_VALUE */);
        return;
      }
      if (pname == 0x8B84) { // GL_INFO_LOG_LENGTH
        var log = GLctx.getShaderInfoLog(GL.shaders[shader]);
        if (log === null) log = '(unknown error)';
        // The GLES2 specification says that if the shader has an empty info log,
        // a value of 0 is returned. Otherwise the log has a null char appended.
        // (An empty string is falsey, so we can just check that instead of
        // looking at log.length.)
        var logLength = log ? log.length + 1 : 0;
        HEAP32[((p)>>2)] = logLength;
      } else if (pname == 0x8B88) { // GL_SHADER_SOURCE_LENGTH
        var source = GLctx.getShaderSource(GL.shaders[shader]);
        // source may be a null, or the empty string, both of which are falsey
        // values that we report a 0 length for.
        var sourceLength = source ? source.length + 1 : 0;
        HEAP32[((p)>>2)] = sourceLength;
      } else {
        HEAP32[((p)>>2)] = GLctx.getShaderParameter(GL.shaders[shader], pname);
      }
    };

  /** @suppress {checkTypes} */
  var jstoi_q = (str) => parseInt(str);
  
  /** @noinline */
  var webglGetLeftBracePos = (name) => name.slice(-1) == ']' && name.lastIndexOf('[');
  
  var webglPrepareUniformLocationsBeforeFirstUse = (program) => {
      var uniformLocsById = program.uniformLocsById, // Maps GLuint -> WebGLUniformLocation
        uniformSizeAndIdsByName = program.uniformSizeAndIdsByName, // Maps name -> [uniform array length, GLuint]
        i, j;
  
      // On the first time invocation of glGetUniformLocation on this shader program:
      // initialize cache data structures and discover which uniforms are arrays.
      if (!uniformLocsById) {
        // maps GLint integer locations to WebGLUniformLocations
        program.uniformLocsById = uniformLocsById = {};
        // maps integer locations back to uniform name strings, so that we can lazily fetch uniform array locations
        program.uniformArrayNamesById = {};
  
        var numActiveUniforms = GLctx.getProgramParameter(program, 0x8B86/*GL_ACTIVE_UNIFORMS*/);
        for (i = 0; i < numActiveUniforms; ++i) {
          var u = GLctx.getActiveUniform(program, i);
          var nm = u.name;
          var sz = u.size;
          var lb = webglGetLeftBracePos(nm);
          var arrayName = lb > 0 ? nm.slice(0, lb) : nm;
  
          // Assign a new location.
          var id = program.uniformIdCounter;
          program.uniformIdCounter += sz;
          // Eagerly get the location of the uniformArray[0] base element.
          // The remaining indices >0 will be left for lazy evaluation to
          // improve performance. Those may never be needed to fetch, if the
          // application fills arrays always in full starting from the first
          // element of the array.
          uniformSizeAndIdsByName[arrayName] = [sz, id];
  
          // Store placeholder integers in place that highlight that these
          // >0 index locations are array indices pending population.
          for (j = 0; j < sz; ++j) {
            uniformLocsById[id] = j;
            program.uniformArrayNamesById[id++] = arrayName;
          }
        }
      }
    };
  
  
  
  var _glGetUniformLocation = (program, name) => {
  
      name = UTF8ToString(name);
  
      if (program = GL.programs[program]) {
        webglPrepareUniformLocationsBeforeFirstUse(program);
        var uniformLocsById = program.uniformLocsById; // Maps GLuint -> WebGLUniformLocation
        var arrayIndex = 0;
        var uniformBaseName = name;
  
        // Invariant: when populating integer IDs for uniform locations, we must
        // maintain the precondition that arrays reside in contiguous addresses,
        // i.e. for a 'vec4 colors[10];', colors[4] must be at location
        // colors[0]+4.  However, user might call glGetUniformLocation(program,
        // "colors") for an array, so we cannot discover based on the user input
        // arguments whether the uniform we are dealing with is an array. The only
        // way to discover which uniforms are arrays is to enumerate over all the
        // active uniforms in the program.
        var leftBrace = webglGetLeftBracePos(name);
  
        // If user passed an array accessor "[index]", parse the array index off the accessor.
        if (leftBrace > 0) {
          arrayIndex = jstoi_q(name.slice(leftBrace + 1)) >>> 0; // "index]", coerce parseInt(']') with >>>0 to treat "foo[]" as "foo[0]" and foo[-1] as unsigned out-of-bounds.
          uniformBaseName = name.slice(0, leftBrace);
        }
  
        // Have we cached the location of this uniform before?
        // A pair [array length, GLint of the uniform location]
        var sizeAndId = program.uniformSizeAndIdsByName[uniformBaseName];
  
        // If an uniform with this name exists, and if its index is within the
        // array limits (if it's even an array), query the WebGLlocation, or
        // return an existing cached location.
        if (sizeAndId && arrayIndex < sizeAndId[0]) {
          arrayIndex += sizeAndId[1]; // Add the base location of the uniform to the array index offset.
          if ((uniformLocsById[arrayIndex] = uniformLocsById[arrayIndex] || GLctx.getUniformLocation(program, name))) {
            return arrayIndex;
          }
        }
      }
      else {
        // N.b. we are currently unable to distinguish between GL program IDs that
        // never existed vs GL program IDs that have been deleted, so report
        // GL_INVALID_VALUE in both cases.
        GL.recordError(0x501 /* GL_INVALID_VALUE */);
      }
      return -1;
    };

  var _glLinkProgram = (program) => {
      program = GL.programs[program];
      GLctx.linkProgram(program);
      // Invalidate earlier computed uniform->ID mappings, those have now become stale
      program.uniformLocsById = 0; // Mark as null-like so that glGetUniformLocation() knows to populate this again.
      program.uniformSizeAndIdsByName = {};
  
    };

  var _glShaderSource = (shader, count, string, length) => {
      var source = GL.getSource(shader, count, string, length);
  
      GLctx.shaderSource(GL.shaders[shader], source);
    };

  var webglGetUniformLocation = (location) => {
      var p = GLctx.currentProgram;
  
      if (p) {
        var webglLoc = p.uniformLocsById[location];
        // p.uniformLocsById[location] stores either an integer, or a
        // WebGLUniformLocation.
        // If an integer, we have not yet bound the location, so do it now. The
        // integer value specifies the array index we should bind to.
        if (typeof webglLoc == 'number') {
          p.uniformLocsById[location] = webglLoc = GLctx.getUniformLocation(p, p.uniformArrayNamesById[location] + (webglLoc > 0 ? `[${webglLoc}]` : ''));
        }
        // Else an already cached WebGLUniformLocation, return it.
        return webglLoc;
      } else {
        GL.recordError(0x502/*GL_INVALID_OPERATION*/);
      }
    };
  
  var miniTempWebGLFloatBuffers = [];
  
  var _glUniform3fv = (location, count, value) => {
  
      if (GL.currentContext.version >= 2) {
        count && GLctx.uniform3fv(webglGetUniformLocation(location), HEAPF32, ((value)>>2), count*3);
        return;
      }
  
      if (count <= 96) {
        // avoid allocation when uploading few enough uniforms
        count *= 3;
        var view = miniTempWebGLFloatBuffers[count];
        for (var i = 0; i < count; i += 3) {
          view[i] = HEAPF32[(((value)+(4*i))>>2)];
          view[i+1] = HEAPF32[(((value)+(4*i+4))>>2)];
          view[i+2] = HEAPF32[(((value)+(4*i+8))>>2)];
        }
      } else
      {
        var view = HEAPF32.subarray((((value)>>2)), ((value+count*12)>>2));
      }
      GLctx.uniform3fv(webglGetUniformLocation(location), view);
    };

  
  
  var _glUniformMatrix4fv = (location, count, transpose, value) => {
  
      if (GL.currentContext.version >= 2) {
        count && GLctx.uniformMatrix4fv(webglGetUniformLocation(location), !!transpose, HEAPF32, ((value)>>2), count*16);
        return;
      }
  
      if (count <= 18) {
        // avoid allocation when uploading few enough uniforms
        var view = miniTempWebGLFloatBuffers[16*count];
        // hoist the heap out of the loop for size and for pthreads+growth.
        var heap = HEAPF32;
        value = ((value)>>2);
        count *= 16;
        for (var i = 0; i < count; i += 16) {
          var dst = value + i;
          view[i] = heap[dst];
          view[i + 1] = heap[dst + 1];
          view[i + 2] = heap[dst + 2];
          view[i + 3] = heap[dst + 3];
          view[i + 4] = heap[dst + 4];
          view[i + 5] = heap[dst + 5];
          view[i + 6] = heap[dst + 6];
          view[i + 7] = heap[dst + 7];
          view[i + 8] = heap[dst + 8];
          view[i + 9] = heap[dst + 9];
          view[i + 10] = heap[dst + 10];
          view[i + 11] = heap[dst + 11];
          view[i + 12] = heap[dst + 12];
          view[i + 13] = heap[dst + 13];
          view[i + 14] = heap[dst + 14];
          view[i + 15] = heap[dst + 15];
        }
      } else
      {
        var view = HEAPF32.subarray((((value)>>2)), ((value+count*64)>>2));
      }
      GLctx.uniformMatrix4fv(webglGetUniformLocation(location), !!transpose, view);
    };

  var _glUseProgram = (program) => {
      program = GL.programs[program];
      GLctx.useProgram(program);
      // Record the currently active program so that we can access the uniform
      // mapping table of that program.
      GLctx.currentProgram = program;
    };

  var _glVertexAttribPointer = (index, size, type, normalized, stride, ptr) => {
      GLctx.vertexAttribPointer(index, size, type, !!normalized, stride, ptr);
    };

  var _glViewport = (x0, x1, x2, x3) => GLctx.viewport(x0, x1, x2, x3);

  
  
  
  /** @param {number=} timeout */
  var safeSetTimeout = (func, timeout) => {
      
      return setTimeout(() => {
        
        callUserCallback(func);
      }, timeout);
    };
  
  
  
  var Browser = {
  useWebGL:false,
  isFullscreen:false,
  pointerLock:false,
  moduleContextCreatedCallbacks:[],
  workers:[],
  preloadedImages:{
  },
  preloadedAudios:{
  },
  init() {
        if (Browser.initted) return;
        Browser.initted = true;
  
        // Support for plugins that can process preloaded files. You can add more of these to
        // your app by creating and appending to 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|webp)$/i.test(name);
        };
        imagePlugin['handle'] = function imagePlugin_handle(byteArray, name, onload, onerror) {
          var 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) });
          }
          var url = URL.createObjectURL(b);
          assert(typeof url == 'string', 'createObjectURL must return a url as a string');
          var img = new Image();
          img.onload = () => {
            assert(img.complete, `Image ${name} could not be decoded`);
            var canvas = /** @type {!HTMLCanvasElement} */ (document.createElement('canvas'));
            canvas.width = img.width;
            canvas.height = img.height;
            var ctx = canvas.getContext('2d');
            ctx.drawImage(img, 0, 0);
            Browser.preloadedImages[name] = canvas;
            URL.revokeObjectURL(url);
            onload?.(byteArray);
          };
          img.onerror = (event) => {
            err(`Image ${url} could not be decoded`);
            onerror?.();
          };
          img.src = url;
        };
        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;
            Browser.preloadedAudios[name] = audio;
            onload?.(byteArray);
          }
          function fail() {
            if (done) return;
            done = true;
            Browser.preloadedAudios[name] = new Audio(); // empty shim
            onerror?.();
          }
          var b = new Blob([byteArray], { type: Browser.getMimetype(name) });
          var url = URL.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', () => finish(audio), false); // use addEventListener due to chromium bug 124926
          audio.onerror = function audio_onerror(event) {
            if (done) return;
            err(`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
          safeSetTimeout(() => {
            finish(audio); // try to use it even though it is not necessarily ready to play
          }, 10000);
        };
        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'] ||
                                      (() => {});
          canvas.exitPointerLock = document['exitPointerLock'] ||
                                   document['mozExitPointerLock'] ||
                                   document['webkitExitPointerLock'] ||
                                   document['msExitPointerLock'] ||
                                   (() => {}); // 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", (ev) => {
              if (!Browser.pointerLock && Module['canvas'].requestPointerLock) {
                Module['canvas'].requestPointerLock();
                ev.preventDefault();
              }
            }, false);
          }
        }
      },
  createContext(/** @type {HTMLCanvasElement} */ 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);
          Browser.useWebGL = useWebGL;
          Browser.moduleContextCreatedCallbacks.forEach((callback) => callback());
          Browser.init();
        }
        return ctx;
      },
  fullscreenHandlersInstalled:false,
  lockPointer:undefined,
  resizeCanvas:undefined,
  requestFullscreen(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);
            }
          }
          Module['onFullScreen']?.(Browser.isFullscreen);
          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'] ? () => canvasContainer['webkitRequestFullscreen'](Element['ALLOW_KEYBOARD_INPUT']) : null) ||
                                           (canvasContainer['webkitRequestFullScreen'] ? () => canvasContainer['webkitRequestFullScreen'](Element['ALLOW_KEYBOARD_INPUT']) : null);
  
        canvasContainer.requestFullscreen();
      },
  requestFullScreen() {
        abort('Module.requestFullScreen has been replaced by Module.requestFullscreen (without a capital S)');
      },
  exitFullscreen() {
        // 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'] ||
            (() => {});
        CFS.apply(document, []);
        return true;
      },
  safeSetTimeout(func, timeout) {
        // Legacy function, this is used by the SDL2 port so we need to keep it
        // around at least until that is updated.
        // See https://github.com/libsdl-org/SDL/pull/6304
        return safeSetTimeout(func, timeout);
      },
  getMimetype(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(func) {
        window.getUserMedia ||= navigator['getUserMedia'] ||
                                navigator['mozGetUserMedia'];
        window.getUserMedia(func);
      },
  getMovementX(event) {
        return event['movementX'] ||
               event['mozMovementX'] ||
               event['webkitMovementX'] ||
               0;
      },
  getMovementY(event) {
        return event['movementY'] ||
               event['mozMovementY'] ||
               event['webkitMovementY'] ||
               0;
      },
  getMouseWheelDelta(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:{
  },
  calculateMouseCoords(pageX, pageY) {
        // 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.');
        var adjustedX = pageX - (scrollX + rect.left);
        var adjustedY = 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.
        adjustedX = adjustedX * (cw / rect.width);
        adjustedY = adjustedY * (ch / rect.height);
  
        return { x: adjustedX, y: adjustedY };
      },
  setMouseCoords(pageX, pageY) {
        const {x, y} = Browser.calculateMouseCoords(pageX, pageY);
        Browser.mouseMovementX = x - Browser.mouseX;
        Browser.mouseMovementY = y - Browser.mouseY;
        Browser.mouseX = x;
        Browser.mouseY = y;
      },
  calculateMouseEvent(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);
          }
  
          // add the mouse delta to the current absolute mouse position
          Browser.mouseX += Browser.mouseMovementX;
          Browser.mouseY += Browser.mouseMovementY;
        } else {
          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 coords = Browser.calculateMouseCoords(touch.pageX, touch.pageY);
  
            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];
              last ||= coords;
              Browser.lastTouches[touch.identifier] = last;
              Browser.touches[touch.identifier] = coords;
            }
            return;
          }
  
          Browser.setMouseCoords(event.pageX, event.pageY);
        }
      },
  resizeListeners:[],
  updateResizeListeners() {
        var canvas = Module['canvas'];
        Browser.resizeListeners.forEach((listener) => listener(canvas.width, canvas.height));
      },
  setCanvasSize(width, height, noUpdates) {
        var canvas = Module['canvas'];
        Browser.updateCanvasDimensions(canvas, width, height);
        if (!noUpdates) Browser.updateResizeListeners();
      },
  windowedWidth:0,
  windowedHeight:0,
  setFullscreenCanvasSize() {
        // 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() {
        // 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(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");
            }
          }
        }
      },
  };
  
  /** @constructor */
  function GLFW_Window(id, width, height, framebufferWidth, framebufferHeight, title, monitor, share) {
        this.id = id;
        this.x = 0;
        this.y = 0;
        this.fullscreen = false; // Used to determine if app in fullscreen mode
        this.storedX = 0; // Used to store X before fullscreen
        this.storedY = 0; // Used to store Y before fullscreen
        this.width = width;
        this.height = height;
        this.framebufferWidth = framebufferWidth;
        this.framebufferHeight = framebufferHeight;
        this.storedWidth = width; // Used to store width before fullscreen
        this.storedHeight = height; // Used to store height before fullscreen
        this.title = title;
        this.monitor = monitor;
        this.share = share;
        this.attributes = Object.assign({}, GLFW.hints);
        this.inputModes = {
          0x00033001:0x00034001, // GLFW_CURSOR (GLFW_CURSOR_NORMAL)
          0x00033002:0, // GLFW_STICKY_KEYS
          0x00033003:0, // GLFW_STICKY_MOUSE_BUTTONS
        };
        this.buttons = 0;
        this.keys = new Array();
        this.domKeys = new Array();
        this.shouldClose = 0;
        this.title = null;
        this.windowPosFunc = 0; // GLFWwindowposfun
        this.windowSizeFunc = 0; // GLFWwindowsizefun
        this.windowCloseFunc = 0; // GLFWwindowclosefun
        this.windowRefreshFunc = 0; // GLFWwindowrefreshfun
        this.windowFocusFunc = 0; // GLFWwindowfocusfun
        this.windowIconifyFunc = 0; // GLFWwindowiconifyfun
        this.windowMaximizeFunc = 0; // GLFWwindowmaximizefun
        this.framebufferSizeFunc = 0; // GLFWframebuffersizefun
        this.windowContentScaleFunc = 0; // GLFWwindowcontentscalefun
        this.mouseButtonFunc = 0; // GLFWmousebuttonfun
        this.cursorPosFunc = 0; // GLFWcursorposfun
        this.cursorEnterFunc = 0; // GLFWcursorenterfun
        this.scrollFunc = 0; // GLFWscrollfun
        this.dropFunc = 0; // GLFWdropfun
        this.keyFunc = 0; // GLFWkeyfun
        this.charFunc = 0; // GLFWcharfun
        this.userptr = 0;
      }
  
  
  
  
  var stringToNewUTF8 = (str) => {
      var size = lengthBytesUTF8(str) + 1;
      var ret = _malloc(size);
      if (ret) stringToUTF8(str, ret, size);
      return ret;
    };
  
  
  var _emscripten_set_window_title = (title) => document.title = UTF8ToString(title);
  
  
  
  var GLFW = {
  WindowFromId:(id) => {
        if (id <= 0 || !GLFW.windows) return null;
        return GLFW.windows[id - 1];
      },
  joystickFunc:0,
  errorFunc:0,
  monitorFunc:0,
  active:null,
  scale:null,
  windows:null,
  monitors:null,
  monitorString:null,
  versionString:null,
  initialTime:null,
  extensions:null,
  devicePixelRatioMQL:null,
  hints:null,
  primaryTouchId:null,
  defaultHints:{
  131073:0,
  131074:0,
  131075:1,
  131076:1,
  131077:1,
  131082:0,
  135169:8,
  135170:8,
  135171:8,
  135172:8,
  135173:24,
  135174:8,
  135175:0,
  135176:0,
  135177:0,
  135178:0,
  135179:0,
  135180:0,
  135181:0,
  135182:0,
  135183:0,
  139265:196609,
  139266:1,
  139267:0,
  139268:0,
  139269:0,
  139270:0,
  139271:0,
  139272:0,
  139276:0,
  },
  DOMToGLFWKeyCode:(keycode) => {
        switch (keycode) {
          // these keycodes are only defined for GLFW3, assume they are the same for GLFW2
          case 0x20:return 32; // DOM_VK_SPACE -> GLFW_KEY_SPACE
          case 0xDE:return 39; // DOM_VK_QUOTE -> GLFW_KEY_APOSTROPHE
          case 0xBC:return 44; // DOM_VK_COMMA -> GLFW_KEY_COMMA
          case 0xAD:return 45; // DOM_VK_HYPHEN_MINUS -> GLFW_KEY_MINUS
          case 0xBD:return 45; // DOM_VK_MINUS -> GLFW_KEY_MINUS
          case 0xBE:return 46; // DOM_VK_PERIOD -> GLFW_KEY_PERIOD
          case 0xBF:return 47; // DOM_VK_SLASH -> GLFW_KEY_SLASH
          case 0x30:return 48; // DOM_VK_0 -> GLFW_KEY_0
          case 0x31:return 49; // DOM_VK_1 -> GLFW_KEY_1
          case 0x32:return 50; // DOM_VK_2 -> GLFW_KEY_2
          case 0x33:return 51; // DOM_VK_3 -> GLFW_KEY_3
          case 0x34:return 52; // DOM_VK_4 -> GLFW_KEY_4
          case 0x35:return 53; // DOM_VK_5 -> GLFW_KEY_5
          case 0x36:return 54; // DOM_VK_6 -> GLFW_KEY_6
          case 0x37:return 55; // DOM_VK_7 -> GLFW_KEY_7
          case 0x38:return 56; // DOM_VK_8 -> GLFW_KEY_8
          case 0x39:return 57; // DOM_VK_9 -> GLFW_KEY_9
          case 0x3B:return 59; // DOM_VK_SEMICOLON -> GLFW_KEY_SEMICOLON
          case 0x3D:return 61; // DOM_VK_EQUALS -> GLFW_KEY_EQUAL
          case 0xBB:return 61; // DOM_VK_EQUALS -> GLFW_KEY_EQUAL
          case 0x41:return 65; // DOM_VK_A -> GLFW_KEY_A
          case 0x42:return 66; // DOM_VK_B -> GLFW_KEY_B
          case 0x43:return 67; // DOM_VK_C -> GLFW_KEY_C
          case 0x44:return 68; // DOM_VK_D -> GLFW_KEY_D
          case 0x45:return 69; // DOM_VK_E -> GLFW_KEY_E
          case 0x46:return 70; // DOM_VK_F -> GLFW_KEY_F
          case 0x47:return 71; // DOM_VK_G -> GLFW_KEY_G
          case 0x48:return 72; // DOM_VK_H -> GLFW_KEY_H
          case 0x49:return 73; // DOM_VK_I -> GLFW_KEY_I
          case 0x4A:return 74; // DOM_VK_J -> GLFW_KEY_J
          case 0x4B:return 75; // DOM_VK_K -> GLFW_KEY_K
          case 0x4C:return 76; // DOM_VK_L -> GLFW_KEY_L
          case 0x4D:return 77; // DOM_VK_M -> GLFW_KEY_M
          case 0x4E:return 78; // DOM_VK_N -> GLFW_KEY_N
          case 0x4F:return 79; // DOM_VK_O -> GLFW_KEY_O
          case 0x50:return 80; // DOM_VK_P -> GLFW_KEY_P
          case 0x51:return 81; // DOM_VK_Q -> GLFW_KEY_Q
          case 0x52:return 82; // DOM_VK_R -> GLFW_KEY_R
          case 0x53:return 83; // DOM_VK_S -> GLFW_KEY_S
          case 0x54:return 84; // DOM_VK_T -> GLFW_KEY_T
          case 0x55:return 85; // DOM_VK_U -> GLFW_KEY_U
          case 0x56:return 86; // DOM_VK_V -> GLFW_KEY_V
          case 0x57:return 87; // DOM_VK_W -> GLFW_KEY_W
          case 0x58:return 88; // DOM_VK_X -> GLFW_KEY_X
          case 0x59:return 89; // DOM_VK_Y -> GLFW_KEY_Y
          case 0x5a:return 90; // DOM_VK_Z -> GLFW_KEY_Z
          case 0xDB:return 91; // DOM_VK_OPEN_BRACKET -> GLFW_KEY_LEFT_BRACKET
          case 0xDC:return 92; // DOM_VK_BACKSLASH -> GLFW_KEY_BACKSLASH
          case 0xDD:return 93; // DOM_VK_CLOSE_BRACKET -> GLFW_KEY_RIGHT_BRACKET
          case 0xC0:return 96; // DOM_VK_BACK_QUOTE -> GLFW_KEY_GRAVE_ACCENT
  
          case 0x1B:return 256; // DOM_VK_ESCAPE -> GLFW_KEY_ESCAPE
          case 0x0D:return 257; // DOM_VK_RETURN -> GLFW_KEY_ENTER
          case 0x09:return 258; // DOM_VK_TAB -> GLFW_KEY_TAB
          case 0x08:return 259; // DOM_VK_BACK -> GLFW_KEY_BACKSPACE
          case 0x2D:return 260; // DOM_VK_INSERT -> GLFW_KEY_INSERT
          case 0x2E:return 261; // DOM_VK_DELETE -> GLFW_KEY_DELETE
          case 0x27:return 262; // DOM_VK_RIGHT -> GLFW_KEY_RIGHT
          case 0x25:return 263; // DOM_VK_LEFT -> GLFW_KEY_LEFT
          case 0x28:return 264; // DOM_VK_DOWN -> GLFW_KEY_DOWN
          case 0x26:return 265; // DOM_VK_UP -> GLFW_KEY_UP
          case 0x21:return 266; // DOM_VK_PAGE_UP -> GLFW_KEY_PAGE_UP
          case 0x22:return 267; // DOM_VK_PAGE_DOWN -> GLFW_KEY_PAGE_DOWN
          case 0x24:return 268; // DOM_VK_HOME -> GLFW_KEY_HOME
          case 0x23:return 269; // DOM_VK_END -> GLFW_KEY_END
          case 0x14:return 280; // DOM_VK_CAPS_LOCK -> GLFW_KEY_CAPS_LOCK
          case 0x91:return 281; // DOM_VK_SCROLL_LOCK -> GLFW_KEY_SCROLL_LOCK
          case 0x90:return 282; // DOM_VK_NUM_LOCK -> GLFW_KEY_NUM_LOCK
          case 0x2C:return 283; // DOM_VK_SNAPSHOT -> GLFW_KEY_PRINT_SCREEN
          case 0x13:return 284; // DOM_VK_PAUSE -> GLFW_KEY_PAUSE
          case 0x70:return 290; // DOM_VK_F1 -> GLFW_KEY_F1
          case 0x71:return 291; // DOM_VK_F2 -> GLFW_KEY_F2
          case 0x72:return 292; // DOM_VK_F3 -> GLFW_KEY_F3
          case 0x73:return 293; // DOM_VK_F4 -> GLFW_KEY_F4
          case 0x74:return 294; // DOM_VK_F5 -> GLFW_KEY_F5
          case 0x75:return 295; // DOM_VK_F6 -> GLFW_KEY_F6
          case 0x76:return 296; // DOM_VK_F7 -> GLFW_KEY_F7
          case 0x77:return 297; // DOM_VK_F8 -> GLFW_KEY_F8
          case 0x78:return 298; // DOM_VK_F9 -> GLFW_KEY_F9
          case 0x79:return 299; // DOM_VK_F10 -> GLFW_KEY_F10
          case 0x7A:return 300; // DOM_VK_F11 -> GLFW_KEY_F11
          case 0x7B:return 301; // DOM_VK_F12 -> GLFW_KEY_F12
          case 0x7C:return 302; // DOM_VK_F13 -> GLFW_KEY_F13
          case 0x7D:return 303; // DOM_VK_F14 -> GLFW_KEY_F14
          case 0x7E:return 304; // DOM_VK_F15 -> GLFW_KEY_F15
          case 0x7F:return 305; // DOM_VK_F16 -> GLFW_KEY_F16
          case 0x80:return 306; // DOM_VK_F17 -> GLFW_KEY_F17
          case 0x81:return 307; // DOM_VK_F18 -> GLFW_KEY_F18
          case 0x82:return 308; // DOM_VK_F19 -> GLFW_KEY_F19
          case 0x83:return 309; // DOM_VK_F20 -> GLFW_KEY_F20
          case 0x84:return 310; // DOM_VK_F21 -> GLFW_KEY_F21
          case 0x85:return 311; // DOM_VK_F22 -> GLFW_KEY_F22
          case 0x86:return 312; // DOM_VK_F23 -> GLFW_KEY_F23
          case 0x87:return 313; // DOM_VK_F24 -> GLFW_KEY_F24
          case 0x88:return 314; // 0x88 (not used?) -> GLFW_KEY_F25
          case 0x60:return 320; // DOM_VK_NUMPAD0 -> GLFW_KEY_KP_0
          case 0x61:return 321; // DOM_VK_NUMPAD1 -> GLFW_KEY_KP_1
          case 0x62:return 322; // DOM_VK_NUMPAD2 -> GLFW_KEY_KP_2
          case 0x63:return 323; // DOM_VK_NUMPAD3 -> GLFW_KEY_KP_3
          case 0x64:return 324; // DOM_VK_NUMPAD4 -> GLFW_KEY_KP_4
          case 0x65:return 325; // DOM_VK_NUMPAD5 -> GLFW_KEY_KP_5
          case 0x66:return 326; // DOM_VK_NUMPAD6 -> GLFW_KEY_KP_6
          case 0x67:return 327; // DOM_VK_NUMPAD7 -> GLFW_KEY_KP_7
          case 0x68:return 328; // DOM_VK_NUMPAD8 -> GLFW_KEY_KP_8
          case 0x69:return 329; // DOM_VK_NUMPAD9 -> GLFW_KEY_KP_9
          case 0x6E:return 330; // DOM_VK_DECIMAL -> GLFW_KEY_KP_DECIMAL
          case 0x6F:return 331; // DOM_VK_DIVIDE -> GLFW_KEY_KP_DIVIDE
          case 0x6A:return 332; // DOM_VK_MULTIPLY -> GLFW_KEY_KP_MULTIPLY
          case 0x6D:return 333; // DOM_VK_SUBTRACT -> GLFW_KEY_KP_SUBTRACT
          case 0x6B:return 334; // DOM_VK_ADD -> GLFW_KEY_KP_ADD
          // case 0x0D:return 335; // DOM_VK_RETURN -> GLFW_KEY_KP_ENTER (DOM_KEY_LOCATION_RIGHT)
          // case 0x61:return 336; // DOM_VK_EQUALS -> GLFW_KEY_KP_EQUAL (DOM_KEY_LOCATION_RIGHT)
          case 0x10:return 340; // DOM_VK_SHIFT -> GLFW_KEY_LEFT_SHIFT
          case 0x11:return 341; // DOM_VK_CONTROL -> GLFW_KEY_LEFT_CONTROL
          case 0x12:return 342; // DOM_VK_ALT -> GLFW_KEY_LEFT_ALT
          case 0x5B:return 343; // DOM_VK_WIN -> GLFW_KEY_LEFT_SUPER
          case 0xE0:return 343; // DOM_VK_META -> GLFW_KEY_LEFT_SUPER
          // case 0x10:return 344; // DOM_VK_SHIFT -> GLFW_KEY_RIGHT_SHIFT (DOM_KEY_LOCATION_RIGHT)
          // case 0x11:return 345; // DOM_VK_CONTROL -> GLFW_KEY_RIGHT_CONTROL (DOM_KEY_LOCATION_RIGHT)
          // case 0x12:return 346; // DOM_VK_ALT -> GLFW_KEY_RIGHT_ALT (DOM_KEY_LOCATION_RIGHT)
          // case 0x5B:return 347; // DOM_VK_WIN -> GLFW_KEY_RIGHT_SUPER (DOM_KEY_LOCATION_RIGHT)
          case 0x5D:return 348; // DOM_VK_CONTEXT_MENU -> GLFW_KEY_MENU
          // XXX: GLFW_KEY_WORLD_1, GLFW_KEY_WORLD_2 what are these?
          default:return -1; // GLFW_KEY_UNKNOWN
        };
      },
  getModBits:(win) => {
        var mod = 0;
        if (win.keys[340]) mod |= 0x0001; // GLFW_MOD_SHIFT
        if (win.keys[341]) mod |= 0x0002; // GLFW_MOD_CONTROL
        if (win.keys[342]) mod |= 0x0004; // GLFW_MOD_ALT
        if (win.keys[343] || win.keys[348]) mod |= 0x0008; // GLFW_MOD_SUPER
        // add caps and num lock keys? only if lock_key_mod is set
        return mod;
      },
  onKeyPress:(event) => {
        if (!GLFW.active || !GLFW.active.charFunc) return;
        if (event.ctrlKey || event.metaKey) return;
  
        // correct unicode charCode is only available with onKeyPress event
        var charCode = event.charCode;
        if (charCode == 0 || (charCode >= 0x00 && charCode <= 0x1F)) return;
  
        getWasmTableEntry(GLFW.active.charFunc)(GLFW.active.id, charCode);
      },
  onKeyChanged:(keyCode, status) => {
        if (!GLFW.active) return;
  
        var key = GLFW.DOMToGLFWKeyCode(keyCode);
        if (key == -1) return;
  
        var repeat = status && GLFW.active.keys[key];
        GLFW.active.keys[key] = status;
        GLFW.active.domKeys[keyCode] = status;
  
        if (GLFW.active.keyFunc) {
          if (repeat) status = 2; // GLFW_REPEAT
          getWasmTableEntry(GLFW.active.keyFunc)(GLFW.active.id, key, keyCode, status, GLFW.getModBits(GLFW.active));
        }
      },
  onGamepadConnected:(event) => {
        GLFW.refreshJoysticks();
      },
  onGamepadDisconnected:(event) => {
        GLFW.refreshJoysticks();
      },
  onKeydown:(event) => {
        GLFW.onKeyChanged(event.keyCode, 1); // GLFW_PRESS or GLFW_REPEAT
  
        // This logic comes directly from the sdl implementation. We cannot
        // call preventDefault on all keydown events otherwise onKeyPress will
        // not get called
        if (event.key == 'Backspace' || event.key == 'Tab') {
          event.preventDefault();
        }
      },
  onKeyup:(event) => {
        GLFW.onKeyChanged(event.keyCode, 0); // GLFW_RELEASE
      },
  onBlur:(event) => {
        if (!GLFW.active) return;
  
        for (var i = 0; i < GLFW.active.domKeys.length; ++i) {
          if (GLFW.active.domKeys[i]) {
            GLFW.onKeyChanged(i, 0); // GLFW_RELEASE
          }
        }
      },
  onMousemove:(event) => {
        if (!GLFW.active) return;
  
        if (event.type === 'touchmove') {
          // Handling for touch events that are being converted to mouse input.
  
          // Don't let the browser fire a duplicate mouse event.
          event.preventDefault();
  
          let primaryChanged = false;
          for (let i of event.changedTouches) {
            // If our chosen primary touch moved, update Browser mouse coords
            if (GLFW.primaryTouchId === i.identifier) {
              Browser.setMouseCoords(i.pageX, i.pageY);
              primaryChanged = true;
              break;
            }
          }
  
          if (!primaryChanged) {
            // Do not send mouse events if some touch other than the primary triggered this.
            return;
          }
  
        } else {
          // Handling for non-touch mouse input events.
          Browser.calculateMouseEvent(event);
        }
  
        if (event.target != Module["canvas"] || !GLFW.active.cursorPosFunc) return;
  
        if (GLFW.active.cursorPosFunc) {
          getWasmTableEntry(GLFW.active.cursorPosFunc)(GLFW.active.id, Browser.mouseX, Browser.mouseY);
        }
      },
  DOMToGLFWMouseButton:(event) => {
        // DOM and glfw have different button codes.
        // See http://www.w3schools.com/jsref/event_button.asp.
        var eventButton = event['button'];
        if (eventButton > 0) {
          if (eventButton == 1) {
            eventButton = 2;
          } else {
            eventButton = 1;
          }
        }
        return eventButton;
      },
  onMouseenter:(event) => {
        if (!GLFW.active) return;
  
        if (event.target != Module["canvas"]) return;
  
        if (GLFW.active.cursorEnterFunc) {
          getWasmTableEntry(GLFW.active.cursorEnterFunc)(GLFW.active.id, 1);
        }
      },
  onMouseleave:(event) => {
        if (!GLFW.active) return;
  
        if (event.target != Module["canvas"]) return;
  
        if (GLFW.active.cursorEnterFunc) {
          getWasmTableEntry(GLFW.active.cursorEnterFunc)(GLFW.active.id, 0);
        }
      },
  onMouseButtonChanged:(event, status) => {
        if (!GLFW.active) return;
  
        if (event.target != Module["canvas"]) return;
  
        // Is this from a touch event?
        const isTouchType = event.type === 'touchstart' || event.type === 'touchend' || event.type === 'touchcancel';
  
        // Only emulating mouse left-click behavior for touches.
        let eventButton = 0;
        if (isTouchType) {
          // Handling for touch events that are being converted to mouse input.
  
          // Don't let the browser fire a duplicate mouse event.
          event.preventDefault();
  
          let primaryChanged = false;
  
          // Set a primary touch if we have none.
          if (GLFW.primaryTouchId === null && event.type === 'touchstart' && event.targetTouches.length > 0) {
            // Pick the first touch that started in the canvas and treat it as primary.
            const chosenTouch = event.targetTouches[0];
            GLFW.primaryTouchId = chosenTouch.identifier;
  
            Browser.setMouseCoords(chosenTouch.pageX, chosenTouch.pageY);
            primaryChanged = true;
          } else if (event.type === 'touchend' || event.type === 'touchcancel') {
            // Clear the primary touch if it ended.
            for (let i of event.changedTouches) {
              // If our chosen primary touch ended, remove it.
              if (GLFW.primaryTouchId === i.identifier) {
                GLFW.primaryTouchId = null;
                primaryChanged = true;
                break;
              }
            }
          }
  
          if (!primaryChanged) {
            // Do not send mouse events if some touch other than the primary triggered this.
            return;
          }
  
        } else {
          // Handling for non-touch mouse input events.
          Browser.calculateMouseEvent(event);
          eventButton = GLFW.DOMToGLFWMouseButton(event);
        }
  
        if (status == 1) { // GLFW_PRESS
          GLFW.active.buttons |= (1 << eventButton);
          try {
            event.target.setCapture();
          } catch (e) {}
        } else {  // GLFW_RELEASE
          GLFW.active.buttons &= ~(1 << eventButton);
        }
  
        // Send mouse event to GLFW.
        if (GLFW.active.mouseButtonFunc) {
          getWasmTableEntry(GLFW.active.mouseButtonFunc)(GLFW.active.id, eventButton, status, GLFW.getModBits(GLFW.active));
        }
      },
  onMouseButtonDown:(event) => {
        if (!GLFW.active) return;
        GLFW.onMouseButtonChanged(event, 1); // GLFW_PRESS
      },
  onMouseButtonUp:(event) => {
        if (!GLFW.active) return;
        GLFW.onMouseButtonChanged(event, 0); // GLFW_RELEASE
      },
  onMouseWheel:(event) => {
        // Note the minus sign that flips browser wheel direction (positive direction scrolls page down) to native wheel direction (positive direction is mouse wheel up)
        var delta = -Browser.getMouseWheelDelta(event);
        delta = (delta == 0) ? 0 : (delta > 0 ? Math.max(delta, 1) : Math.min(delta, -1)); // Quantize to integer so that minimum scroll is at least +/- 1.
        GLFW.wheelPos += delta;
  
        if (!GLFW.active || !GLFW.active.scrollFunc || event.target != Module['canvas']) return;
        var sx = 0;
        var sy = delta;
        if (event.type == 'mousewheel') {
          sx = event.wheelDeltaX;
        } else {
          sx = event.deltaX;
        }
  
        getWasmTableEntry(GLFW.active.scrollFunc)(GLFW.active.id, sx, sy);
  
        event.preventDefault();
      },
  onCanvasResize:(width, height, framebufferWidth, framebufferHeight) => {
        if (!GLFW.active) return;
  
        var resizeNeeded = false;
  
        // If the client is requesting fullscreen mode
        if (document["fullscreen"] || document["fullScreen"] || document["mozFullScreen"] || document["webkitIsFullScreen"]) {
          if (!GLFW.active.fullscreen) {
            resizeNeeded = width != screen.width || height != screen.height;
            GLFW.active.storedX = GLFW.active.x;
            GLFW.active.storedY = GLFW.active.y;
            GLFW.active.storedWidth = GLFW.active.width;
            GLFW.active.storedHeight = GLFW.active.height;
            GLFW.active.x = GLFW.active.y = 0;
            GLFW.active.width = screen.width;
            GLFW.active.height = screen.height;
            GLFW.active.fullscreen = true;
          }
        // If the client is reverting from fullscreen mode
        } else if (GLFW.active.fullscreen == true) {
          resizeNeeded = width != GLFW.active.storedWidth || height != GLFW.active.storedHeight;
          GLFW.active.x = GLFW.active.storedX;
          GLFW.active.y = GLFW.active.storedY;
          GLFW.active.width = GLFW.active.storedWidth;
          GLFW.active.height = GLFW.active.storedHeight;
          GLFW.active.fullscreen = false;
        }
  
        if (resizeNeeded) {
          // width or height is changed (fullscreen / exit fullscreen) which will call this listener back
          // with proper framebufferWidth/framebufferHeight
          Browser.setCanvasSize(GLFW.active.width, GLFW.active.height);
        } else if (GLFW.active.width != width ||
                   GLFW.active.height != height ||
                   GLFW.active.framebufferWidth != framebufferWidth ||
                   GLFW.active.framebufferHeight != framebufferHeight) {
          GLFW.active.width = width;
          GLFW.active.height = height;
          GLFW.active.framebufferWidth = framebufferWidth;
          GLFW.active.framebufferHeight = framebufferHeight;
          GLFW.onWindowSizeChanged();
          GLFW.onFramebufferSizeChanged();
        }
      },
  onWindowSizeChanged:() => {
        if (!GLFW.active) return;
  
        if (GLFW.active.windowSizeFunc) {
          getWasmTableEntry(GLFW.active.windowSizeFunc)(GLFW.active.id, GLFW.active.width, GLFW.active.height);
        }
      },
  onFramebufferSizeChanged:() => {
        if (!GLFW.active) return;
  
        if (GLFW.active.framebufferSizeFunc) {
          getWasmTableEntry(GLFW.active.framebufferSizeFunc)(GLFW.active.id, GLFW.active.framebufferWidth, GLFW.active.framebufferHeight);
        }
      },
  onWindowContentScaleChanged:(scale) => {
        GLFW.scale = scale;
        if (!GLFW.active) return;
  
        if (GLFW.active.windowContentScaleFunc) {
          getWasmTableEntry(GLFW.active.windowContentScaleFunc)(GLFW.active.id, GLFW.scale, GLFW.scale);
        }
      },
  getTime:() => _emscripten_get_now() / 1000,
  setWindowTitle:(winid, title) => {
        var win = GLFW.WindowFromId(winid);
        if (!win) return;
  
        win.title = title;
        if (GLFW.active.id == win.id) {
          _emscripten_set_window_title(title);
        }
      },
  setJoystickCallback:(cbfun) => {
        var prevcbfun = GLFW.joystickFunc;
        GLFW.joystickFunc = cbfun;
        GLFW.refreshJoysticks();
        return prevcbfun;
      },
  joys:{
  },
  lastGamepadState:[],
  lastGamepadStateFrame:null,
  refreshJoysticks:() => {
        // Produce a new Gamepad API sample if we are ticking a new game frame, or if not using emscripten_set_main_loop() at all to drive animation.
        if (MainLoop.currentFrameNumber !== GLFW.lastGamepadStateFrame || !MainLoop.currentFrameNumber) {
          GLFW.lastGamepadState = navigator.getGamepads ? navigator.getGamepads() : (navigator.webkitGetGamepads || []);
          GLFW.lastGamepadStateFrame = MainLoop.currentFrameNumber;
  
          for (var joy = 0; joy < GLFW.lastGamepadState.length; ++joy) {
            var gamepad = GLFW.lastGamepadState[joy];
  
            if (gamepad) {
              if (!GLFW.joys[joy]) {
                out('glfw joystick connected:',joy);
                GLFW.joys[joy] = {
                  id: stringToNewUTF8(gamepad.id),
                  buttonsCount: gamepad.buttons.length,
                  axesCount: gamepad.axes.length,
                  buttons: _malloc(gamepad.buttons.length),
                  axes: _malloc(gamepad.axes.length*4),
                };
  
                if (GLFW.joystickFunc) {
                  getWasmTableEntry(GLFW.joystickFunc)(joy, 0x00040001); // GLFW_CONNECTED
                }
              }
  
              var data = GLFW.joys[joy];
  
              for (var i = 0; i < gamepad.buttons.length;  ++i) {
                HEAP8[data.buttons + i] = gamepad.buttons[i].pressed;
              }
  
              for (var i = 0; i < gamepad.axes.length; ++i) {
                HEAPF32[((data.axes + i*4)>>2)] = gamepad.axes[i];
              }
            } else {
              if (GLFW.joys[joy]) {
                out('glfw joystick disconnected',joy);
  
                if (GLFW.joystickFunc) {
                  getWasmTableEntry(GLFW.joystickFunc)(joy, 0x00040002); // GLFW_DISCONNECTED
                }
  
                _free(GLFW.joys[joy].id);
                _free(GLFW.joys[joy].buttons);
                _free(GLFW.joys[joy].axes);
  
                delete GLFW.joys[joy];
              }
            }
          }
        }
      },
  setKeyCallback:(winid, cbfun) => {
        var win = GLFW.WindowFromId(winid);
        if (!win) return null;
        var prevcbfun = win.keyFunc;
        win.keyFunc = cbfun;
        return prevcbfun;
      },
  setCharCallback:(winid, cbfun) => {
        var win = GLFW.WindowFromId(winid);
        if (!win) return null;
        var prevcbfun = win.charFunc;
        win.charFunc = cbfun;
        return prevcbfun;
      },
  setMouseButtonCallback:(winid, cbfun) => {
        var win = GLFW.WindowFromId(winid);
        if (!win) return null;
        var prevcbfun = win.mouseButtonFunc;
        win.mouseButtonFunc = cbfun;
        return prevcbfun;
      },
  setCursorPosCallback:(winid, cbfun) => {
        var win = GLFW.WindowFromId(winid);
        if (!win) return null;
        var prevcbfun = win.cursorPosFunc;
        win.cursorPosFunc = cbfun;
        return prevcbfun;
      },
  setScrollCallback:(winid, cbfun) => {
        var win = GLFW.WindowFromId(winid);
        if (!win) return null;
        var prevcbfun = win.scrollFunc;
        win.scrollFunc = cbfun;
        return prevcbfun;
      },
  setDropCallback:(winid, cbfun) => {
        var win = GLFW.WindowFromId(winid);
        if (!win) return null;
        var prevcbfun = win.dropFunc;
        win.dropFunc = cbfun;
        return prevcbfun;
      },
  onDrop:(event) => {
        if (!GLFW.active || !GLFW.active.dropFunc) return;
        if (!event.dataTransfer || !event.dataTransfer.files || event.dataTransfer.files.length == 0) return;
  
        event.preventDefault();
  
        var filenames = _malloc(event.dataTransfer.files.length*4);
        var filenamesArray = [];
        var count = event.dataTransfer.files.length;
  
        // Read and save the files to emscripten's FS
        var written = 0;
        var drop_dir = '.glfw_dropped_files';
        FS.createPath('/', drop_dir);
  
        function save(file) {
          var path = '/' + drop_dir + '/' + file.name.replace(/\//g, '_');
          var reader = new FileReader();
          reader.onloadend = (e) => {
            if (reader.readyState != 2) { // not DONE
              ++written;
              out('failed to read dropped file: '+file.name+': '+reader.error);
              return;
            }
  
            var data = e.target.result;
            FS.writeFile(path, new Uint8Array(data));
            if (++written === count) {
              getWasmTableEntry(GLFW.active.dropFunc)(GLFW.active.id, count, filenames);
  
              for (var i = 0; i < filenamesArray.length; ++i) {
                _free(filenamesArray[i]);
              }
              _free(filenames);
            }
          };
          reader.readAsArrayBuffer(file);
  
          var filename = stringToNewUTF8(path);
          filenamesArray.push(filename);
          HEAPU32[((filenames + i*4)>>2)] = filename;
        }
  
        for (var i = 0; i < count; ++i) {
          save(event.dataTransfer.files[i]);
        }
  
        return false;
      },
  onDragover:(event) => {
        if (!GLFW.active || !GLFW.active.dropFunc) return;
  
        event.preventDefault();
        return false;
      },
  setWindowSizeCallback:(winid, cbfun) => {
        var win = GLFW.WindowFromId(winid);
        if (!win) return null;
        var prevcbfun = win.windowSizeFunc;
        win.windowSizeFunc = cbfun;
  
        return prevcbfun;
      },
  setWindowCloseCallback:(winid, cbfun) => {
        var win = GLFW.WindowFromId(winid);
        if (!win) return null;
        var prevcbfun = win.windowCloseFunc;
        win.windowCloseFunc = cbfun;
        return prevcbfun;
      },
  setWindowRefreshCallback:(winid, cbfun) => {
        var win = GLFW.WindowFromId(winid);
        if (!win) return null;
        var prevcbfun = win.windowRefreshFunc;
        win.windowRefreshFunc = cbfun;
        return prevcbfun;
      },
  onClickRequestPointerLock:(e) => {
        if (!Browser.pointerLock && Module['canvas'].requestPointerLock) {
          Module['canvas'].requestPointerLock();
          e.preventDefault();
        }
      },
  setInputMode:(winid, mode, value) => {
        var win = GLFW.WindowFromId(winid);
        if (!win) return;
  
        switch (mode) {
          case 0x00033001: { // GLFW_CURSOR
            switch (value) {
              case 0x00034001: { // GLFW_CURSOR_NORMAL
                win.inputModes[mode] = value;
                Module['canvas'].removeEventListener('click', GLFW.onClickRequestPointerLock, true);
                Module['canvas'].exitPointerLock();
                break;
              }
              case 0x00034002: { // GLFW_CURSOR_HIDDEN
                err('glfwSetInputMode called with GLFW_CURSOR_HIDDEN value not implemented');
                break;
              }
              case 0x00034003: { // GLFW_CURSOR_DISABLED
                win.inputModes[mode] = value;
                Module['canvas'].addEventListener('click', GLFW.onClickRequestPointerLock, true);
                Module['canvas'].requestPointerLock();
                break;
              }
              default: {
                err(`glfwSetInputMode called with unknown value parameter value: ${value}`);
                break;
              }
            }
            break;
          }
          case 0x00033002: { // GLFW_STICKY_KEYS
            err('glfwSetInputMode called with GLFW_STICKY_KEYS mode not implemented');
            break;
          }
          case 0x00033003: { // GLFW_STICKY_MOUSE_BUTTONS
            err('glfwSetInputMode called with GLFW_STICKY_MOUSE_BUTTONS mode not implemented');
            break;
          }
          case 0x00033004: { // GLFW_LOCK_KEY_MODS
            err('glfwSetInputMode called with GLFW_LOCK_KEY_MODS mode not implemented');
            break;
          }
          case 0x000330005: { // GLFW_RAW_MOUSE_MOTION
            err('glfwSetInputMode called with GLFW_RAW_MOUSE_MOTION mode not implemented');
            break;
          }
          default: {
            err(`glfwSetInputMode called with unknown mode parameter value: ${mode}`);
            break;
          }
        }
      },
  getKey:(winid, key) => {
        var win = GLFW.WindowFromId(winid);
        if (!win) return 0;
        return win.keys[key];
      },
  getMouseButton:(winid, button) => {
        var win = GLFW.WindowFromId(winid);
        if (!win) return 0;
        return (win.buttons & (1 << button)) > 0;
      },
  getCursorPos:(winid, x, y) => {
        HEAPF64[((x)>>3)] = Browser.mouseX;
        HEAPF64[((y)>>3)] = Browser.mouseY;
      },
  getMousePos:(winid, x, y) => {
        HEAP32[((x)>>2)] = Browser.mouseX;
        HEAP32[((y)>>2)] = Browser.mouseY;
      },
  setCursorPos:(winid, x, y) => {
      },
  getWindowPos:(winid, x, y) => {
        var wx = 0;
        var wy = 0;
  
        var win = GLFW.WindowFromId(winid);
        if (win) {
          wx = win.x;
          wy = win.y;
        }
  
        if (x) {
          HEAP32[((x)>>2)] = wx;
        }
  
        if (y) {
          HEAP32[((y)>>2)] = wy;
        }
      },
  setWindowPos:(winid, x, y) => {
        var win = GLFW.WindowFromId(winid);
        if (!win) return;
        win.x = x;
        win.y = y;
      },
  getWindowSize:(winid, width, height) => {
        var ww = 0;
        var wh = 0;
  
        var win = GLFW.WindowFromId(winid);
        if (win) {
          ww = win.width;
          wh = win.height;
        }
  
        if (width) {
          HEAP32[((width)>>2)] = ww;
        }
  
        if (height) {
          HEAP32[((height)>>2)] = wh;
        }
      },
  setWindowSize:(winid, width, height) => {
        var win = GLFW.WindowFromId(winid);
        if (!win) return;
  
        if (GLFW.active.id == win.id) {
          Browser.setCanvasSize(width, height); // triggers the listener (onCanvasResize) + windowSizeFunc
        }
      },
  defaultWindowHints:() => {
        GLFW.hints = Object.assign({}, GLFW.defaultHints);
      },
  createWindow:(width, height, title, monitor, share) => {
        var i, id;
        for (i = 0; i < GLFW.windows.length && GLFW.windows[i] !== null; i++) {
          // no-op
        }
        if (i > 0) throw "glfwCreateWindow only supports one window at time currently";
  
        // id for window
        id = i + 1;
  
        // not valid
        if (width <= 0 || height <= 0) return 0;
  
        if (monitor) {
          Browser.requestFullscreen();
        } else {
          Browser.setCanvasSize(width, height);
        }
  
        // Create context when there are no existing alive windows
        for (i = 0; i < GLFW.windows.length && GLFW.windows[i] == null; i++) {
          // no-op
        }
        var useWebGL = GLFW.hints[0x00022001] > 0; // Use WebGL when we are told to based on GLFW_CLIENT_API
        if (i == GLFW.windows.length) {
          if (useWebGL) {
            var contextAttributes = {
              antialias: (GLFW.hints[0x0002100D] > 1), // GLFW_SAMPLES
              depth: (GLFW.hints[0x00021005] > 0),     // GLFW_DEPTH_BITS
              stencil: (GLFW.hints[0x00021006] > 0),   // GLFW_STENCIL_BITS
              alpha: (GLFW.hints[0x00021004] > 0)      // GLFW_ALPHA_BITS
            }
            Browser.createContext(Module['canvas'], /*useWebGL=*/true, /*setInModule=*/true, contextAttributes);
          } else {
            Browser.init();
          }
        }
  
        // If context creation failed, do not return a valid window
        if (!Module['ctx'] && useWebGL) return 0;
  
        // Initializes the framebuffer size from the canvas
        const canvas = Module['canvas'];
        var win = new GLFW_Window(id, width, height, canvas.width, canvas.height, title, monitor, share);
  
        // Set window to array
        if (id - 1 == GLFW.windows.length) {
          GLFW.windows.push(win);
        } else {
          GLFW.windows[id - 1] = win;
        }
  
        GLFW.active = win;
        GLFW.adjustCanvasDimensions();
        return win.id;
      },
  destroyWindow:(winid) => {
        var win = GLFW.WindowFromId(winid);
        if (!win) return;
  
        if (win.windowCloseFunc) {
          getWasmTableEntry(win.windowCloseFunc)(win.id);
        }
  
        GLFW.windows[win.id - 1] = null;
        if (GLFW.active.id == win.id)
          GLFW.active = null;
  
        // Destroy context when no alive windows
        for (var i = 0; i < GLFW.windows.length; i++)
          if (GLFW.windows[i] !== null) return;
  
        delete Module['ctx'];
      },
  swapBuffers:(winid) => {
      },
  requestFullscreen(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);
              Browser.updateResizeListeners();
            }
          } 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);
              Browser.updateResizeListeners();
            }
          }
          Module['onFullScreen']?.(Browser.isFullscreen);
          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'] ? () => canvasContainer['webkitRequestFullscreen'](Element['ALLOW_KEYBOARD_INPUT']) : null) ||
          (canvasContainer['webkitRequestFullScreen'] ? () => canvasContainer['webkitRequestFullScreen'](Element['ALLOW_KEYBOARD_INPUT']) : null);
  
        canvasContainer.requestFullscreen();
      },
  updateCanvasDimensions(canvas, wNative, hNative) {
        const scale = GLFW.getHiDPIScale();
  
        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) {
          wNative = w;
          hNative = h;
        }
        const wNativeScaled = Math.floor(wNative * scale);
        const hNativeScaled = Math.floor(hNative * scale);
        if (canvas.width  != wNativeScaled) canvas.width  = wNativeScaled;
        if (canvas.height != hNativeScaled) canvas.height = hNativeScaled;
        if (typeof canvas.style != 'undefined') {
          if (!GLFW.isCSSScalingEnabled()) {
            canvas.style.setProperty( "width", wNative + "px", "important");
            canvas.style.setProperty("height", hNative + "px", "important");
          } else {
            canvas.style.removeProperty( "width");
            canvas.style.removeProperty("height");
          }
        }
      },
  calculateMouseCoords(pageX, pageY) {
        // Calculate the movement based on the changes
        // in the coordinates.
        const rect = Module["canvas"].getBoundingClientRect();
  
        // 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.');
        var adjustedX = pageX - (scrollX + rect.left);
        var adjustedY = pageY - (scrollY + rect.top);
  
        // getBoundingClientRect() returns dimension affected by CSS, so as a result:
        // - when CSS scaling is enabled, this will fix the mouse coordinates to match the width/height of the window
        // - otherwise the CSS width/height are forced to the width/height of the GLFW window (see updateCanvasDimensions),
        //   so there is no need to adjust the position
        if (GLFW.isCSSScalingEnabled() && GLFW.active) {
          adjustedX = adjustedX * (GLFW.active.width / rect.width);
          adjustedY = adjustedY * (GLFW.active.height / rect.height);
        }
  
        return { x: adjustedX, y: adjustedY };
      },
  setWindowAttrib:(winid, attrib, value) => {
        var win = GLFW.WindowFromId(winid);
        if (!win) return;
        const isHiDPIAware = GLFW.isHiDPIAware();
        win.attributes[attrib] = value;
        if (isHiDPIAware !== GLFW.isHiDPIAware())
          GLFW.adjustCanvasDimensions();
      },
  getDevicePixelRatio() {
        return (typeof devicePixelRatio == 'number' && devicePixelRatio) || 1.0;
      },
  isHiDPIAware() {
        if (GLFW.active)
          return GLFW.active.attributes[0x0002200C] > 0; // GLFW_SCALE_TO_MONITOR
        else
          return false;
      },
  isCSSScalingEnabled() {
        return !GLFW.isHiDPIAware();
      },
  adjustCanvasDimensions() {
        if (GLFW.active) {
          Browser.updateCanvasDimensions(Module['canvas'], GLFW.active.width, GLFW.active.height);
          Browser.updateResizeListeners();
        }
      },
  getHiDPIScale() {
        return GLFW.isHiDPIAware() ? GLFW.scale : 1.0;
      },
  onDevicePixelRatioChange() {
        GLFW.onWindowContentScaleChanged(GLFW.getDevicePixelRatio());
        GLFW.adjustCanvasDimensions();
      },
  GLFW2ParamToGLFW3Param:(param) => {
        var table = {
          0x00030001:0, // GLFW_MOUSE_CURSOR
          0x00030002:0, // GLFW_STICKY_KEYS
          0x00030003:0, // GLFW_STICKY_MOUSE_BUTTONS
          0x00030004:0, // GLFW_SYSTEM_KEYS
          0x00030005:0, // GLFW_KEY_REPEAT
          0x00030006:0, // GLFW_AUTO_POLL_EVENTS
          0x00020001:0, // GLFW_OPENED
          0x00020002:0, // GLFW_ACTIVE
          0x00020003:0, // GLFW_ICONIFIED
          0x00020004:0, // GLFW_ACCELERATED
          0x00020005:0x00021001, // GLFW_RED_BITS
          0x00020006:0x00021002, // GLFW_GREEN_BITS
          0x00020007:0x00021003, // GLFW_BLUE_BITS
          0x00020008:0x00021004, // GLFW_ALPHA_BITS
          0x00020009:0x00021005, // GLFW_DEPTH_BITS
          0x0002000A:0x00021006, // GLFW_STENCIL_BITS
          0x0002000B:0x0002100F, // GLFW_REFRESH_RATE
          0x0002000C:0x00021007, // GLFW_ACCUM_RED_BITS
          0x0002000D:0x00021008, // GLFW_ACCUM_GREEN_BITS
          0x0002000E:0x00021009, // GLFW_ACCUM_BLUE_BITS
          0x0002000F:0x0002100A, // GLFW_ACCUM_ALPHA_BITS
          0x00020010:0x0002100B, // GLFW_AUX_BUFFERS
          0x00020011:0x0002100C, // GLFW_STEREO
          0x00020012:0, // GLFW_WINDOW_NO_RESIZE
          0x00020013:0x0002100D, // GLFW_FSAA_SAMPLES
          0x00020014:0x00022002, // GLFW_OPENGL_VERSION_MAJOR
          0x00020015:0x00022003, // GLFW_OPENGL_VERSION_MINOR
          0x00020016:0x00022006, // GLFW_OPENGL_FORWARD_COMPAT
          0x00020017:0x00022007, // GLFW_OPENGL_DEBUG_CONTEXT
          0x00020018:0x00022008, // GLFW_OPENGL_PROFILE
        };
        return table[param];
      },
  };
  var _glfwCreateWindow = (width, height, title, monitor, share) => GLFW.createWindow(width, height, title, monitor, share);

  var _glfwGetPrimaryMonitor = () => 1;

  var _glfwGetVideoMode = (monitor) => 0;

  
  
  var _glfwInit = () => {
      if (GLFW.windows) return 1; // GL_TRUE
  
      GLFW.initialTime = GLFW.getTime();
      GLFW.defaultWindowHints();
      GLFW.windows = new Array()
      GLFW.active = null;
      GLFW.scale  = GLFW.getDevicePixelRatio();
  
      window.addEventListener("gamepadconnected", GLFW.onGamepadConnected, true);
      window.addEventListener("gamepaddisconnected", GLFW.onGamepadDisconnected, true);
      window.addEventListener("keydown", GLFW.onKeydown, true);
      window.addEventListener("keypress", GLFW.onKeyPress, true);
      window.addEventListener("keyup", GLFW.onKeyup, true);
      window.addEventListener("blur", GLFW.onBlur, true);
  
      // watch for devicePixelRatio changes
      GLFW.devicePixelRatioMQL = window.matchMedia('(resolution: ' + GLFW.getDevicePixelRatio() + 'dppx)');
      GLFW.devicePixelRatioMQL.addEventListener('change', GLFW.onDevicePixelRatioChange);
  
      Module["canvas"].addEventListener("touchmove", GLFW.onMousemove, true);
      Module["canvas"].addEventListener("touchstart", GLFW.onMouseButtonDown, true);
      Module["canvas"].addEventListener("touchcancel", GLFW.onMouseButtonUp, true);
      Module["canvas"].addEventListener("touchend", GLFW.onMouseButtonUp, true);
      Module["canvas"].addEventListener("mousemove", GLFW.onMousemove, true);
      Module["canvas"].addEventListener("mousedown", GLFW.onMouseButtonDown, true);
      Module["canvas"].addEventListener("mouseup", GLFW.onMouseButtonUp, true);
      Module["canvas"].addEventListener('wheel', GLFW.onMouseWheel, true);
      Module["canvas"].addEventListener('mousewheel', GLFW.onMouseWheel, true);
      Module["canvas"].addEventListener('mouseenter', GLFW.onMouseenter, true);
      Module["canvas"].addEventListener('mouseleave', GLFW.onMouseleave, true);
      Module["canvas"].addEventListener('drop', GLFW.onDrop, true);
      Module["canvas"].addEventListener('dragover', GLFW.onDragover, true);
  
      // Overriding implementation to account for HiDPI
      Browser.requestFullscreen = GLFW.requestFullscreen;
      Browser.calculateMouseCoords = GLFW.calculateMouseCoords;
      Browser.updateCanvasDimensions = GLFW.updateCanvasDimensions;
  
      Browser.resizeListeners.push((width, height) => {
        if (GLFW.isHiDPIAware()) {
          var canvas = Module['canvas'];
          GLFW.onCanvasResize(canvas.clientWidth, canvas.clientHeight, width, height);
        } else {
          GLFW.onCanvasResize(width, height, width, height);
        }
      });
  
      return 1; // GL_TRUE
    };

  var _glfwMakeContextCurrent = (winid) => {};

  var _glfwSetFramebufferSizeCallback = (winid, cbfun) => {
      var win = GLFW.WindowFromId(winid);
      if (!win) return null;
      var prevcbfun = win.framebufferSizeFunc;
      win.framebufferSizeFunc = cbfun;
      return prevcbfun;
    };

  var _glfwSetKeyCallback = (winid, cbfun) => GLFW.setKeyCallback(winid, cbfun);

  var _glfwSetWindowShouldClose = (winid, value) => {
      var win = GLFW.WindowFromId(winid);
      if (!win) return;
      win.shouldClose = value;
    };

  var _glfwSwapBuffers = (winid) => GLFW.swapBuffers(winid);

  var _glfwTerminate = () => {
      window.removeEventListener("gamepadconnected", GLFW.onGamepadConnected, true);
      window.removeEventListener("gamepaddisconnected", GLFW.onGamepadDisconnected, true);
      window.removeEventListener("keydown", GLFW.onKeydown, true);
      window.removeEventListener("keypress", GLFW.onKeyPress, true);
      window.removeEventListener("keyup", GLFW.onKeyup, true);
      window.removeEventListener("blur", GLFW.onBlur, true);
      Module["canvas"].removeEventListener("touchmove", GLFW.onMousemove, true);
      Module["canvas"].removeEventListener("touchstart", GLFW.onMouseButtonDown, true);
      Module["canvas"].removeEventListener("touchcancel", GLFW.onMouseButtonUp, true);
      Module["canvas"].removeEventListener("touchend", GLFW.onMouseButtonUp, true);
      Module["canvas"].removeEventListener("mousemove", GLFW.onMousemove, true);
      Module["canvas"].removeEventListener("mousedown", GLFW.onMouseButtonDown, true);
      Module["canvas"].removeEventListener("mouseup", GLFW.onMouseButtonUp, true);
      Module["canvas"].removeEventListener('wheel', GLFW.onMouseWheel, true);
      Module["canvas"].removeEventListener('mousewheel', GLFW.onMouseWheel, true);
      Module["canvas"].removeEventListener('mouseenter', GLFW.onMouseenter, true);
      Module["canvas"].removeEventListener('mouseleave', GLFW.onMouseleave, true);
      Module["canvas"].removeEventListener('drop', GLFW.onDrop, true);
      Module["canvas"].removeEventListener('dragover', GLFW.onDragover, true);
  
      if (GLFW.devicePixelRatioMQL)
        GLFW.devicePixelRatioMQL.removeEventListener('change', GLFW.onDevicePixelRatioChange);
  
      Module["canvas"].width = Module["canvas"].height = 1;
      GLFW.windows = null;
      GLFW.active = null;
    };

  var _glfwWindowHint = (target, hint) => {
      GLFW.hints[target] = hint;
    };



  
  
  var stackAlloc = (sz) => __emscripten_stack_alloc(sz);
  var stringToUTF8OnStack = (str) => {
      var size = lengthBytesUTF8(str) + 1;
      var ret = stackAlloc(size);
      stringToUTF8(str, ret, size);
      return ret;
    };


  var FS_createPath = FS.createPath;



  var FS_unlink = (path) => FS.unlink(path);

  var FS_createLazyFile = FS.createLazyFile;

  var FS_createDevice = FS.createDevice;

  FS.createPreloadedFile = FS_createPreloadedFile;
  FS.staticInit();
  // Set module methods based on EXPORTED_RUNTIME_METHODS
  Module["FS_createPath"] = FS.createPath;
  Module["FS_createDataFile"] = FS.createDataFile;
  Module["FS_createPreloadedFile"] = FS.createPreloadedFile;
  Module["FS_unlink"] = FS.unlink;
  Module["FS_createLazyFile"] = FS.createLazyFile;
  Module["FS_createDevice"] = FS.createDevice;
  ;

      Module["requestAnimationFrame"] = MainLoop.requestAnimationFrame;
      Module["pauseMainLoop"] = MainLoop.pause;
      Module["resumeMainLoop"] = MainLoop.resume;
      MainLoop.init();;
var miniTempWebGLFloatBuffersStorage = new Float32Array(288);
  // Create GL_POOL_TEMP_BUFFERS_SIZE+1 temporary buffers, for uploads of size 0 through GL_POOL_TEMP_BUFFERS_SIZE inclusive
  for (/**@suppress{duplicate}*/var i = 0; i <= 288; ++i) {
    miniTempWebGLFloatBuffers[i] = miniTempWebGLFloatBuffersStorage.subarray(0, i);
  };

      // exports
      Module["requestFullscreen"] = Browser.requestFullscreen;
      Module["requestFullScreen"] = Browser.requestFullScreen;
      Module["setCanvasSize"] = Browser.setCanvasSize;
      Module["getUserMedia"] = Browser.getUserMedia;
      Module["createContext"] = Browser.createContext;
    ;
function checkIncomingModuleAPI() {
  ignoredModuleProp('fetchSettings');
}
var wasmImports = {
  /** @export */
  __assert_fail: ___assert_fail,
  /** @export */
  __cxa_throw: ___cxa_throw,
  /** @export */
  __syscall_fcntl64: ___syscall_fcntl64,
  /** @export */
  __syscall_ioctl: ___syscall_ioctl,
  /** @export */
  __syscall_openat: ___syscall_openat,
  /** @export */
  _abort_js: __abort_js,
  /** @export */
  _emscripten_memcpy_js: __emscripten_memcpy_js,
  /** @export */
  _tzset_js: __tzset_js,
  /** @export */
  emscripten_resize_heap: _emscripten_resize_heap,
  /** @export */
  emscripten_set_main_loop_arg: _emscripten_set_main_loop_arg,
  /** @export */
  environ_get: _environ_get,
  /** @export */
  environ_sizes_get: _environ_sizes_get,
  /** @export */
  fd_close: _fd_close,
  /** @export */
  fd_read: _fd_read,
  /** @export */
  fd_seek: _fd_seek,
  /** @export */
  fd_write: _fd_write,
  /** @export */
  glAttachShader: _glAttachShader,
  /** @export */
  glBindBuffer: _glBindBuffer,
  /** @export */
  glBufferData: _glBufferData,
  /** @export */
  glClear: _glClear,
  /** @export */
  glClearColor: _glClearColor,
  /** @export */
  glCompileShader: _glCompileShader,
  /** @export */
  glCreateProgram: _glCreateProgram,
  /** @export */
  glCreateShader: _glCreateShader,
  /** @export */
  glDeleteShader: _glDeleteShader,
  /** @export */
  glDrawArrays: _glDrawArrays,
  /** @export */
  glEnableVertexAttribArray: _glEnableVertexAttribArray,
  /** @export */
  glGenBuffers: _glGenBuffers,
  /** @export */
  glGetShaderInfoLog: _glGetShaderInfoLog,
  /** @export */
  glGetShaderiv: _glGetShaderiv,
  /** @export */
  glGetUniformLocation: _glGetUniformLocation,
  /** @export */
  glLinkProgram: _glLinkProgram,
  /** @export */
  glShaderSource: _glShaderSource,
  /** @export */
  glUniform3fv: _glUniform3fv,
  /** @export */
  glUniformMatrix4fv: _glUniformMatrix4fv,
  /** @export */
  glUseProgram: _glUseProgram,
  /** @export */
  glVertexAttribPointer: _glVertexAttribPointer,
  /** @export */
  glViewport: _glViewport,
  /** @export */
  glfwCreateWindow: _glfwCreateWindow,
  /** @export */
  glfwGetPrimaryMonitor: _glfwGetPrimaryMonitor,
  /** @export */
  glfwGetVideoMode: _glfwGetVideoMode,
  /** @export */
  glfwInit: _glfwInit,
  /** @export */
  glfwMakeContextCurrent: _glfwMakeContextCurrent,
  /** @export */
  glfwSetFramebufferSizeCallback: _glfwSetFramebufferSizeCallback,
  /** @export */
  glfwSetKeyCallback: _glfwSetKeyCallback,
  /** @export */
  glfwSetWindowShouldClose: _glfwSetWindowShouldClose,
  /** @export */
  glfwSwapBuffers: _glfwSwapBuffers,
  /** @export */
  glfwTerminate: _glfwTerminate,
  /** @export */
  glfwWindowHint: _glfwWindowHint
};
var wasmExports = createWasm();
var ___wasm_call_ctors = createExportWrapper('__wasm_call_ctors', 0);
var _main = Module['_main'] = createExportWrapper('__main_argc_argv', 2);
var _fflush = createExportWrapper('fflush', 1);
var _strerror = createExportWrapper('strerror', 1);
var _malloc = createExportWrapper('malloc', 1);
var _free = createExportWrapper('free', 1);
var _emscripten_stack_init = () => (_emscripten_stack_init = wasmExports['emscripten_stack_init'])();
var _emscripten_stack_get_free = () => (_emscripten_stack_get_free = wasmExports['emscripten_stack_get_free'])();
var _emscripten_stack_get_base = () => (_emscripten_stack_get_base = wasmExports['emscripten_stack_get_base'])();
var _emscripten_stack_get_end = () => (_emscripten_stack_get_end = wasmExports['emscripten_stack_get_end'])();
var __emscripten_stack_restore = (a0) => (__emscripten_stack_restore = wasmExports['_emscripten_stack_restore'])(a0);
var __emscripten_stack_alloc = (a0) => (__emscripten_stack_alloc = wasmExports['_emscripten_stack_alloc'])(a0);
var _emscripten_stack_get_current = () => (_emscripten_stack_get_current = wasmExports['emscripten_stack_get_current'])();
var dynCall_jiji = Module['dynCall_jiji'] = createExportWrapper('dynCall_jiji', 5);
var dynCall_viijii = Module['dynCall_viijii'] = createExportWrapper('dynCall_viijii', 7);
var dynCall_iiiiij = Module['dynCall_iiiiij'] = createExportWrapper('dynCall_iiiiij', 7);
var dynCall_iiiiijj = Module['dynCall_iiiiijj'] = createExportWrapper('dynCall_iiiiijj', 9);
var dynCall_iiiiiijj = Module['dynCall_iiiiiijj'] = createExportWrapper('dynCall_iiiiiijj', 10);


// include: postamble.js
// === Auto-generated postamble setup entry stuff ===

Module['addRunDependency'] = addRunDependency;
Module['removeRunDependency'] = removeRunDependency;
Module['FS_createPreloadedFile'] = FS_createPreloadedFile;
Module['FS_unlink'] = FS_unlink;
Module['FS_createPath'] = FS_createPath;
Module['FS_createDevice'] = FS_createDevice;
Module['FS_createDataFile'] = FS_createDataFile;
Module['FS_createLazyFile'] = FS_createLazyFile;
var missingLibrarySymbols = [
  'writeI53ToI64',
  'writeI53ToI64Clamped',
  'writeI53ToI64Signaling',
  'writeI53ToU64Clamped',
  'writeI53ToU64Signaling',
  'readI53FromI64',
  'readI53FromU64',
  'convertI32PairToI53',
  'convertU32PairToI53',
  'getTempRet0',
  'setTempRet0',
  'growMemory',
  'inetPton4',
  'inetNtop4',
  'inetPton6',
  'inetNtop6',
  'readSockaddr',
  'writeSockaddr',
  'emscriptenLog',
  'readEmAsmArgs',
  'listenOnce',
  'autoResumeAudioContext',
  'dynCallLegacy',
  'getDynCaller',
  'dynCall',
  'runtimeKeepalivePush',
  'runtimeKeepalivePop',
  'asmjsMangle',
  'HandleAllocator',
  'getNativeTypeSize',
  'STACK_SIZE',
  'STACK_ALIGN',
  'POINTER_SIZE',
  'ASSERTIONS',
  'getCFunc',
  'ccall',
  'cwrap',
  'uleb128Encode',
  'sigToWasmTypes',
  'generateFuncType',
  'convertJsFunctionToWasm',
  'getEmptyTableSlot',
  'updateTableMap',
  'getFunctionAddress',
  'addFunction',
  'removeFunction',
  'reallyNegative',
  'unSign',
  'strLen',
  'reSign',
  'formatString',
  'intArrayToString',
  'AsciiToString',
  'UTF16ToString',
  'stringToUTF16',
  'lengthBytesUTF16',
  'UTF32ToString',
  'stringToUTF32',
  'lengthBytesUTF32',
  'writeArrayToMemory',
  'registerKeyEventCallback',
  'maybeCStringToJsString',
  'findEventTarget',
  'getBoundingClientRect',
  'fillMouseEventData',
  'registerMouseEventCallback',
  'registerWheelEventCallback',
  'registerUiEventCallback',
  'registerFocusEventCallback',
  'fillDeviceOrientationEventData',
  'registerDeviceOrientationEventCallback',
  'fillDeviceMotionEventData',
  'registerDeviceMotionEventCallback',
  'screenOrientation',
  'fillOrientationChangeEventData',
  'registerOrientationChangeEventCallback',
  'fillFullscreenChangeEventData',
  'registerFullscreenChangeEventCallback',
  'JSEvents_requestFullscreen',
  'JSEvents_resizeCanvasForFullscreen',
  'registerRestoreOldStyle',
  'hideEverythingExceptGivenElement',
  'restoreHiddenElements',
  'setLetterbox',
  'softFullscreenResizeWebGLRenderTarget',
  'doRequestFullscreen',
  'fillPointerlockChangeEventData',
  'registerPointerlockChangeEventCallback',
  'registerPointerlockErrorEventCallback',
  'requestPointerLock',
  'fillVisibilityChangeEventData',
  'registerVisibilityChangeEventCallback',
  'registerTouchEventCallback',
  'fillGamepadEventData',
  'registerGamepadEventCallback',
  'registerBeforeUnloadEventCallback',
  'fillBatteryEventData',
  'battery',
  'registerBatteryEventCallback',
  'setCanvasElementSize',
  'getCanvasElementSize',
  'jsStackTrace',
  'getCallstack',
  'convertPCtoSourceLocation',
  'checkWasiClock',
  'wasiRightsToMuslOFlags',
  'wasiOFlagsToMuslOFlags',
  'setImmediateWrapped',
  'safeRequestAnimationFrame',
  'clearImmediateWrapped',
  'polyfillSetImmediate',
  'registerPostMainLoop',
  'registerPreMainLoop',
  'getPromise',
  'makePromise',
  'idsToPromises',
  'makePromiseCallback',
  'findMatchingCatch',
  'Browser_asyncPrepareDataCounter',
  'isLeapYear',
  'ydayFromDate',
  'arraySum',
  'addDays',
  'getSocketFromFD',
  'getSocketAddress',
  'FS_mkdirTree',
  '_setNetworkCallback',
  'heapObjectForWebGLType',
  'toTypedArrayIndex',
  'emscriptenWebGLGet',
  'computeUnpackAlignedImageSize',
  'colorChannelsInGlTextureFormat',
  'emscriptenWebGLGetTexPixelData',
  'emscriptenWebGLGetUniform',
  'emscriptenWebGLGetVertexAttrib',
  '__glGetActiveAttribOrUniform',
  'writeGLArray',
  'registerWebGlEventCallback',
  'runAndAbortIfError',
  'emscriptenWebGLGetIndexed',
  'ALLOC_NORMAL',
  'ALLOC_STACK',
  'allocate',
  'writeStringToMemory',
  'writeAsciiToMemory',
  'setErrNo',
  'demangle',
  'stackTrace',
];
missingLibrarySymbols.forEach(missingLibrarySymbol)

var unexportedSymbols = [
  'run',
  'addOnPreRun',
  'addOnInit',
  'addOnPreMain',
  'addOnExit',
  'addOnPostRun',
  'out',
  'err',
  'callMain',
  'abort',
  'wasmMemory',
  'wasmExports',
  'writeStackCookie',
  'checkStackCookie',
  'convertI32PairToI53Checked',
  'stackSave',
  'stackRestore',
  'stackAlloc',
  'ptrToString',
  'zeroMemory',
  'exitJS',
  'getHeapMax',
  'abortOnCannotGrowMemory',
  'ENV',
  'ERRNO_CODES',
  'strError',
  'DNS',
  'Protocols',
  'Sockets',
  'timers',
  'warnOnce',
  'readEmAsmArgsArray',
  'jstoi_q',
  'jstoi_s',
  'getExecutableName',
  'handleException',
  'keepRuntimeAlive',
  'callUserCallback',
  'maybeExit',
  'asyncLoad',
  'alignMemory',
  'mmapAlloc',
  'wasmTable',
  'noExitRuntime',
  'freeTableIndexes',
  'functionsInTableMap',
  'setValue',
  'getValue',
  'PATH',
  'PATH_FS',
  'UTF8Decoder',
  'UTF8ArrayToString',
  'UTF8ToString',
  'stringToUTF8Array',
  'stringToUTF8',
  'lengthBytesUTF8',
  'intArrayFromString',
  'stringToAscii',
  'UTF16Decoder',
  'stringToNewUTF8',
  'stringToUTF8OnStack',
  'JSEvents',
  'specialHTMLTargets',
  'findCanvasEventTarget',
  'currentFullscreenStrategy',
  'restoreOldWindowedStyle',
  'UNWIND_CACHE',
  'ExitStatus',
  'getEnvStrings',
  'doReadv',
  'doWritev',
  'initRandomFill',
  'randomFill',
  'safeSetTimeout',
  'promiseMap',
  'uncaughtExceptionCount',
  'exceptionLast',
  'exceptionCaught',
  'ExceptionInfo',
  'Browser',
  'getPreloadedImageData__data',
  'wget',
  'MONTH_DAYS_REGULAR',
  'MONTH_DAYS_LEAP',
  'MONTH_DAYS_REGULAR_CUMULATIVE',
  'MONTH_DAYS_LEAP_CUMULATIVE',
  'SYSCALLS',
  'preloadPlugins',
  'FS_modeStringToFlags',
  'FS_getMode',
  'FS_stdin_getChar_buffer',
  'FS_stdin_getChar',
  'FS_readFile',
  'FS',
  'MEMFS',
  'TTY',
  'PIPEFS',
  'SOCKFS',
  'tempFixedLengthArray',
  'miniTempWebGLFloatBuffers',
  'miniTempWebGLIntBuffers',
  'webgl_enable_ANGLE_instanced_arrays',
  'webgl_enable_OES_vertex_array_object',
  'webgl_enable_WEBGL_draw_buffers',
  'webgl_enable_WEBGL_multi_draw',
  'webgl_enable_EXT_polygon_offset_clamp',
  'webgl_enable_EXT_clip_control',
  'webgl_enable_WEBGL_polygon_mode',
  'GL',
  'webglGetUniformLocation',
  'webglPrepareUniformLocationsBeforeFirstUse',
  'webglGetLeftBracePos',
  'AL',
  'GLUT',
  'EGL',
  'GLEW',
  'IDBStore',
  'SDL',
  'SDL_gfx',
  'GLFW_Window',
  'GLFW',
  'webgl_enable_WEBGL_draw_instanced_base_vertex_base_instance',
  'webgl_enable_WEBGL_multi_draw_instanced_base_vertex_base_instance',
  'allocateUTF8',
  'allocateUTF8OnStack',
  'print',
  'printErr',
];
unexportedSymbols.forEach(unexportedRuntimeSymbol);



var calledRun;

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 = _main;

  args.unshift(thisProgram);

  var argc = args.length;
  var argv = stackAlloc((argc + 1) * 4);
  var argv_ptr = argv;
  args.forEach((arg) => {
    HEAPU32[((argv_ptr)>>2)] = stringToUTF8OnStack(arg);
    argv_ptr += 4;
  });
  HEAPU32[((argv_ptr)>>2)] = 0;

  try {

    var ret = entryFunction(argc, argv);

    // if we're not running an evented main loop, it's time to exit
    exitJS(ret, /* implicit = */ true);
    return ret;
  }
  catch (e) {
    return handleException(e);
  }
}

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.
  _emscripten_stack_init();
  // TODO(sbc): Move writeStackCookie to native to to avoid this.
  writeStackCookie();
}

function run(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();

    Module['onRuntimeInitialized']?.();

    if (shouldRunNow) callMain(args);

    postRun();
  }

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

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 = (x) => {
    has = true;
  }
  try { // it doesn't matter if it fails
    _fflush(0);
    // also flush in the JS FS layer
    ['stdout', 'stderr'].forEach((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?.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 Emscripten FAQ), or make sure to emit a newline when you printf etc.');
  }
}

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();

// end include: postamble.js