// 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(Module) { ..generated code.. }
// 3. pre-run appended it, var Module = {}; ..generated code..
// 4. External script tag defines var Module.
// We need to check if Module already exists (e.g. case 3 above).
// Substitution will be replaced with actual code on later stage of the build,
// this way Closure Compiler will not mangle it (e.g. case 4. above).
// Note that if you want to run closure, and also to use Module
// after the generated code, you will need to define   var Module = {};
// before the code. Then that object will be used in the code, and you
// can continue to use Module afterwards as well.
var Module = typeof Module != 'undefined' ? Module : {};

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


// 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;
};

// 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 importScripts == 'function';
// 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';
var ENVIRONMENT_IS_SHELL = !ENVIRONMENT_IS_WEB && !ENVIRONMENT_IS_NODE && !ENVIRONMENT_IS_WORKER;

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

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

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

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 + ')');
  }

  // `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?
  // 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');

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

// include: node_shell_read.js
read_ = (filename, binary) => {
  // 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);
  return fs.readFileSync(filename, binary ? undefined : 'utf8');
};

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

readAsync = (filename, onload, onerror, binary = true) => {
  // See the comment in the `read_` function.
  filename = isFileURI(filename) ? new URL(filename) : nodePath.normalize(filename);
  fs.readFile(filename, binary ? undefined : 'utf8', (err, data) => {
    if (err) onerror(err);
    else onload(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;
  }

  process.on('uncaughtException', (ex) => {
    // suppress ExitStatus exceptions from showing an error
    if (ex !== 'unwind' && !(ex instanceof ExitStatus) && !(ex.context instanceof ExitStatus)) {
      throw ex;
    }
  });

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

} else
if (ENVIRONMENT_IS_SHELL) {

  if ((typeof process == 'object' && typeof require === 'function') || typeof window == 'object' || typeof importScripts == 'function') 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?)');

  if (typeof read != 'undefined') {
    read_ = read;
  }

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

  readAsync = (f, onload, onerror) => {
    setTimeout(() => onload(readBinary(f)));
  };

  if (typeof clearTimeout == 'undefined') {
    globalThis.clearTimeout = (id) => {};
  }

  if (typeof setTimeout == 'undefined') {
    // spidermonkey lacks setTimeout but we use it above in readAsync.
    globalThis.setTimeout = (f) => (typeof f == 'function') ? f() : abort();
  }

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

  if (typeof quit == 'function') {
    quit_ = (status, toThrow) => {
      // Unlike node which has process.exitCode, d8 has no such mechanism. So we
      // have no way to set the exit code and then let the program exit with
      // that code when it naturally stops running (say, when all setTimeouts
      // have completed). For that reason, we must call `quit` - the only way to
      // set the exit code - but quit also halts immediately.  To increase
      // consistency with node (and the web) we schedule the actual quit call
      // using a setTimeout to give the current stack and any exception handlers
      // a chance to run.  This enables features such as addOnPostRun (which
      // expected to be able to run code after main returns).
      setTimeout(() => {
        if (!(toThrow instanceof ExitStatus)) {
          let toLog = toThrow;
          if (toThrow && typeof toThrow == 'object' && toThrow.stack) {
            toLog = [toThrow, toThrow.stack];
          }
          err(`exiting due to exception: ${toLog}`);
        }
        quit(status);
      });
      throw toThrow;
    };
  }

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

} else

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

  // Differentiate the Web Worker from the Node Worker case, as reading must
  // be done differently.
  {
// include: web_or_worker_shell_read.js
read_ = (url) => {
    var xhr = new XMLHttpRequest();
    xhr.open('GET', url, false);
    xhr.send(null);
    return xhr.responseText;
  }

  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, onload, onerror) => {
    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
        onload(xhr.response);
        return;
      }
      onerror();
    };
    xhr.onerror = onerror;
    xhr.send(null);
  }

// 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 e.g. in memoryInitializerRequest, which is a large typed array.
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');

if (Module['quit']) quit_ = Module['quit'];legacyModuleProp('quit', 'quit_');

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

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

// 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.
function _free() {
  // Show a helpful error since we used to include free by default in the past.
  abort('free() called but not included in the build - add `_free` to EXPORTED_FUNCTIONS');
}

// 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;

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);
}

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

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

var runtimeInitialized = false;

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.init.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;
  EXITSTATUS = 1;

  // 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
  // defintion 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) {
  return function() {
    assert(runtimeInitialized, `native function \`${name}\` called before runtime initialization`);
    var f = wasmExports[name];
    assert(f, `exported native function \`${name}\` not found`);
    return f.apply(null, arguments);
  };
}

// include: runtime_exceptions.js
// end include: runtime_exceptions.js
var wasmBinaryFile;
  wasmBinaryFile = 'saw.wasm';
  if (!isDataURI(wasmBinaryFile)) {
    wasmBinaryFile = locateFile(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, try to load it asynchronously.
  // Fetch has some additional restrictions over XHR, like it can't be used on a file:// url.
  // See https://github.com/github/fetch/pull/92#issuecomment-140665932
  // Cordova or Electron apps are typically loaded from a file:// url.
  // So use fetch if it is available and the url is not a file, otherwise fall back to XHR.
  if (!wasmBinary
      && (ENVIRONMENT_IS_WEB || ENVIRONMENT_IS_WORKER)) {
    if (typeof fetch == 'function'
      && !isFileURI(binaryFile)
    ) {
      return fetch(binaryFile, { credentials: 'same-origin' }).then((response) => {
        if (!response['ok']) {
          throw `failed to load wasm binary file at '${binaryFile}'`;
        }
        return response['arrayBuffer']();
      }).catch(() => getBinarySync(binaryFile));
    }
    else if (readAsync) {
      // fetch is not available or url is file => try XHR (readAsync uses XHR internally)
      return new Promise((resolve, reject) => {
        readAsync(binaryFile, (response) => resolve(new Uint8Array(/** @type{!ArrayBuffer} */(response))), reject)
      });
    }
  }

  // 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((instance) => {
    return instance;
  }).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);
}

// Create the wasm instance.
// Receives the wasm imports, returns the exports.
function createWasm() {
  // prepare imports
  var info = {
    'env': wasmImports,
    'wasi_snapshot_preview1': wasmImports,
  };
  // 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');
    // This assertion doesn't hold when emscripten is run in --post-link
    // mode.
    // TODO(sbc): Read INITIAL_MEMORY out of the wasm file in post-link mode.
    //assert(wasmMemory.buffer.byteLength === 16777216);
    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']);
  }

  // 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;
    }
  }

  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
function legacyModuleProp(prop, newName, incomming=true) {
  if (!Object.getOwnPropertyDescriptor(Module, prop)) {
    Object.defineProperty(Module, prop, {
      configurable: true,
      get() {
        let extra = incomming ? ' (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';
}

function missingGlobal(sym, msg) {
  if (typeof globalThis !== 'undefined') {
    Object.defineProperty(globalThis, sym, {
      configurable: true,
      get() {
        warnOnce(`\`${sym}\` is not longer defined by emscripten. ${msg}`);
        return undefined;
      }
    });
  }
}

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

function missingLibrarySymbol(sym) {
  if (typeof globalThis !== 'undefined' && !Object.getOwnPropertyDescriptor(globalThis, sym)) {
    Object.defineProperty(globalThis, sym, {
      configurable: true,
      get() {
        // 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);
        return undefined;
      }
    });
  }
  // Any symbol that is not included from the JS libary 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(text) {
  // TODO(sbc): Make this configurable somehow.  Its not always convenient for
  // logging to show up as warnings.
  console.warn.apply(console, arguments);
}
// end include: runtime_debug.js
// === Body ===

var ASM_CONSTS = {
  736268: ($0, $1, $2, $3, $4) => { if (typeof window === 'undefined' || (window.AudioContext || window.webkitAudioContext) === undefined) { return 0; } if (typeof(window.miniaudio) === 'undefined') { window.miniaudio = { referenceCount: 0 }; window.miniaudio.device_type = {}; window.miniaudio.device_type.playback = $0; window.miniaudio.device_type.capture = $1; window.miniaudio.device_type.duplex = $2; window.miniaudio.device_state = {}; window.miniaudio.device_state.stopped = $3; window.miniaudio.device_state.started = $4; miniaudio.devices = []; miniaudio.track_device = function(device) { for (var iDevice = 0; iDevice < miniaudio.devices.length; ++iDevice) { if (miniaudio.devices[iDevice] == null) { miniaudio.devices[iDevice] = device; return iDevice; } } miniaudio.devices.push(device); return miniaudio.devices.length - 1; }; miniaudio.untrack_device_by_index = function(deviceIndex) { miniaudio.devices[deviceIndex] = null; while (miniaudio.devices.length > 0) { if (miniaudio.devices[miniaudio.devices.length-1] == null) { miniaudio.devices.pop(); } else { break; } } }; miniaudio.untrack_device = function(device) { for (var iDevice = 0; iDevice < miniaudio.devices.length; ++iDevice) { if (miniaudio.devices[iDevice] == device) { return miniaudio.untrack_device_by_index(iDevice); } } }; miniaudio.get_device_by_index = function(deviceIndex) { return miniaudio.devices[deviceIndex]; }; miniaudio.unlock_event_types = (function(){ return ['touchstart', 'touchend', 'click']; })(); miniaudio.unlock = function() { for(var i = 0; i < miniaudio.devices.length; ++i) { var device = miniaudio.devices[i]; if (device != null && device.webaudio != null && device.state === 2 ) { device.webaudio.resume(); } } miniaudio.unlock_event_types.map(function(event_type) { document.removeEventListener(event_type, miniaudio.unlock, true); }); }; miniaudio.unlock_event_types.map(function(event_type) { document.addEventListener(event_type, miniaudio.unlock, true); }); } window.miniaudio.referenceCount += 1; return 1; },  
 738258: () => { if (typeof(window.miniaudio) !== 'undefined') { window.miniaudio.referenceCount -= 1; if (window.miniaudio.referenceCount === 0) { delete window.miniaudio; } } },  
 738422: () => { return (navigator.mediaDevices !== undefined && navigator.mediaDevices.getUserMedia !== undefined); },  
 738526: () => { try { var temp = new (window.AudioContext || window.webkitAudioContext)(); var sampleRate = temp.sampleRate; temp.close(); return sampleRate; } catch(e) { return 0; } },  
 738697: ($0, $1, $2, $3, $4, $5) => { var deviceType = $0; var channels = $1; var sampleRate = $2; var bufferSize = $3; var pIntermediaryBuffer = $4; var pDevice = $5; if (typeof(window.miniaudio) === 'undefined') { return -1; } var device = {}; var audioContextOptions = {}; if (deviceType == window.miniaudio.device_type.playback) { audioContextOptions.sampleRate = sampleRate; } device.webaudio = new (window.AudioContext || window.webkitAudioContext)(audioContextOptions); device.webaudio.suspend(); device.state = window.miniaudio.device_state.stopped; var channelCountIn = 0; var channelCountOut = channels; if (deviceType != window.miniaudio.device_type.playback) { channelCountIn = channels; } device.scriptNode = device.webaudio.createScriptProcessor(bufferSize, channelCountIn, channelCountOut); device.scriptNode.onaudioprocess = function(e) { if (device.intermediaryBufferView == null || device.intermediaryBufferView.length == 0) { device.intermediaryBufferView = new Float32Array(Module.HEAPF32.buffer, pIntermediaryBuffer, bufferSize * channels); } if (deviceType == miniaudio.device_type.capture || deviceType == miniaudio.device_type.duplex) { for (var iChannel = 0; iChannel < channels; iChannel += 1) { var inputBuffer = e.inputBuffer.getChannelData(iChannel); var intermediaryBuffer = device.intermediaryBufferView; for (var iFrame = 0; iFrame < bufferSize; iFrame += 1) { intermediaryBuffer[iFrame*channels + iChannel] = inputBuffer[iFrame]; } } _ma_device_process_pcm_frames_capture__webaudio(pDevice, bufferSize, pIntermediaryBuffer); } if (deviceType == miniaudio.device_type.playback || deviceType == miniaudio.device_type.duplex) { _ma_device_process_pcm_frames_playback__webaudio(pDevice, bufferSize, pIntermediaryBuffer); for (var iChannel = 0; iChannel < e.outputBuffer.numberOfChannels; ++iChannel) { var outputBuffer = e.outputBuffer.getChannelData(iChannel); var intermediaryBuffer = device.intermediaryBufferView; for (var iFrame = 0; iFrame < bufferSize; iFrame += 1) { outputBuffer[iFrame] = intermediaryBuffer[iFrame*channels + iChannel]; } } } else { for (var iChannel = 0; iChannel < e.outputBuffer.numberOfChannels; ++iChannel) { e.outputBuffer.getChannelData(iChannel).fill(0.0); } } }; if (deviceType == miniaudio.device_type.capture || deviceType == miniaudio.device_type.duplex) { navigator.mediaDevices.getUserMedia({audio:true, video:false}) .then(function(stream) { device.streamNode = device.webaudio.createMediaStreamSource(stream); device.streamNode.connect(device.scriptNode); device.scriptNode.connect(device.webaudio.destination); }) .catch(function(error) { console.log("Failed to get user media: " + error); }); } if (deviceType == miniaudio.device_type.playback) { device.scriptNode.connect(device.webaudio.destination); } return miniaudio.track_device(device); },  
 741480: ($0) => { return miniaudio.get_device_by_index($0).webaudio.sampleRate; },  
 741546: ($0) => { var device = miniaudio.get_device_by_index($0); if (device.scriptNode !== undefined) { device.scriptNode.onaudioprocess = function(e) {}; device.scriptNode.disconnect(); device.scriptNode = undefined; } if (device.streamNode !== undefined) { device.streamNode.disconnect(); device.streamNode = undefined; } device.webaudio.close(); device.webaudio = undefined; },  
 741911: ($0) => { miniaudio.untrack_device_by_index($0); },  
 741954: ($0) => { var device = miniaudio.get_device_by_index($0); device.webaudio.resume(); device.state = miniaudio.device_state.started; },  
 742079: ($0) => { var device = miniaudio.get_device_by_index($0); device.webaudio.suspend(); device.state = miniaudio.device_state.stopped; }
};
function sapp_js_add_beforeunload_listener() { Module.sokol_beforeunload = (event) => { if (__sapp_html5_get_ask_leave_site() != 0) { event.preventDefault(); event.returnValue = ' '; } }; window.addEventListener('beforeunload', Module.sokol_beforeunload); }
function sapp_js_remove_beforeunload_listener() { window.removeEventListener('beforeunload', Module.sokol_beforeunload); }
function sapp_js_add_clipboard_listener() { Module.sokol_paste = (event) => { const pasted_str = event.clipboardData.getData('text'); withStackSave(() => { const cstr = allocateUTF8OnStack(pasted_str); __sapp_emsc_onpaste(cstr); }); }; window.addEventListener('paste', Module.sokol_paste); }
function sapp_js_remove_clipboard_listener() { window.removeEventListener('paste', Module.sokol_paste); }
function sapp_js_write_clipboard(c_str) { const str = UTF8ToString(c_str); const ta = document.createElement('textarea'); ta.setAttribute('autocomplete', 'off'); ta.setAttribute('autocorrect', 'off'); ta.setAttribute('autocapitalize', 'off'); ta.setAttribute('spellcheck', 'false'); ta.style.left = -100 + 'px'; ta.style.top = -100 + 'px'; ta.style.height = 1; ta.style.width = 1; ta.value = str; document.body.appendChild(ta); ta.select(); document.execCommand('copy'); document.body.removeChild(ta); }
function sapp_js_add_dragndrop_listeners(canvas_name_cstr) { Module.sokol_drop_files = []; const canvas_name = UTF8ToString(canvas_name_cstr); const canvas = document.getElementById(canvas_name); Module.sokol_dragenter = (event) => { event.stopPropagation(); event.preventDefault(); }; Module.sokol_dragleave = (event) => { event.stopPropagation(); event.preventDefault(); }; Module.sokol_dragover = (event) => { event.stopPropagation(); event.preventDefault(); }; Module.sokol_drop = (event) => { event.stopPropagation(); event.preventDefault(); const files = event.dataTransfer.files; Module.sokol_dropped_files = files; __sapp_emsc_begin_drop(files.length); for (let i = 0; i < files.length; i++) { withStackSave(() => { const cstr = allocateUTF8OnStack(files[i].name); __sapp_emsc_drop(i, cstr); }); } let mods = 0; if (event.shiftKey) { mods |= 1; } if (event.ctrlKey) { mods |= 2; } if (event.altKey) { mods |= 4; } if (event.metaKey) { mods |= 8; } __sapp_emsc_end_drop(event.clientX, event.clientY, mods); }; canvas.addEventListener('dragenter', Module.sokol_dragenter, false); canvas.addEventListener('dragleave', Module.sokol_dragleave, false); canvas.addEventListener('dragover', Module.sokol_dragover, false); canvas.addEventListener('drop', Module.sokol_drop, false); }
function sapp_js_dropped_file_size(index) { /** @suppress {missingProperties} */ const files = Module.sokol_dropped_files; if ((index < 0) || (index >= files.length)) { return 0; } else { return files[index].size; } }
function sapp_js_fetch_dropped_file(index,callback,buf_ptr,buf_size,user_data) { const reader = new FileReader(); reader.onload = (loadEvent) => { const content = loadEvent.target.result; if (content.byteLength > buf_size) { __sapp_emsc_invoke_fetch_cb(index, 0, 1, callback, 0, buf_ptr, buf_size, user_data); } else { HEAPU8.set(new Uint8Array(content), buf_ptr); __sapp_emsc_invoke_fetch_cb(index, 1, 0, callback, content.byteLength, buf_ptr, buf_size, user_data); } }; reader.onerror = () => { __sapp_emsc_invoke_fetch_cb(index, 0, 2, callback, 0, buf_ptr, buf_size, user_data); }; /** @suppress {missingProperties} */ const files = Module.sokol_dropped_files; reader.readAsArrayBuffer(files[index]); }
function sapp_js_remove_dragndrop_listeners(canvas_name_cstr) { const canvas_name = UTF8ToString(canvas_name_cstr); const canvas = document.getElementById(canvas_name); canvas.removeEventListener('dragenter', Module.sokol_dragenter); canvas.removeEventListener('dragleave', Module.sokol_dragleave); canvas.removeEventListener('dragover', Module.sokol_dragover); canvas.removeEventListener('drop', Module.sokol_drop); }
function sapp_js_init(c_str_target) { const target_str = UTF8ToString(c_str_target); Module.sapp_emsc_target = document.getElementById(target_str); if (!Module.sapp_emsc_target) { console.log("sokol_app.h: invalid target:" + target_str); } if (!Module.sapp_emsc_target.requestPointerLock) { console.log("sokol_app.h: target doesn't support requestPointerLock:" + target_str); } }
function sapp_js_request_pointerlock() { if (Module.sapp_emsc_target) { if (Module.sapp_emsc_target.requestPointerLock) { Module.sapp_emsc_target.requestPointerLock(); } } }
function sapp_js_exit_pointerlock() { if (document.exitPointerLock) { document.exitPointerLock(); } }
function sapp_js_set_cursor(cursor_type,shown) { if (Module.sapp_emsc_target) { let cursor; if (shown === 0) { cursor = "none"; } else switch (cursor_type) { case 0: cursor = "auto"; break; case 1: cursor = "default"; break; case 2: cursor = "text"; break; case 3: cursor = "crosshair"; break; case 4: cursor = "pointer"; break; case 5: cursor = "ew-resize"; break; case 6: cursor = "ns-resize"; break; case 7: cursor = "nwse-resize"; break; case 8: cursor = "nesw-resize"; break; case 9: cursor = "all-scroll"; break; case 10: cursor = "not-allowed"; break; default: cursor = "auto"; break; } Module.sapp_emsc_target.style.cursor = cursor; } }
function sapp_js_clear_favicon() { const link = document.getElementById('sokol-app-favicon'); if (link) { document.head.removeChild(link); } }
function sapp_js_set_favicon(w,h,pixels) { const canvas = document.createElement('canvas'); canvas.width = w; canvas.height = h; const ctx = canvas.getContext('2d'); const img_data = ctx.createImageData(w, h); img_data.data.set(HEAPU8.subarray(pixels, pixels + w*h*4)); ctx.putImageData(img_data, 0, 0); const new_link = document.createElement('link'); new_link.id = 'sokol-app-favicon'; new_link.rel = 'shortcut icon'; new_link.href = canvas.toDataURL(); document.head.appendChild(new_link); }


// end include: preamble.js

  /** @constructor */
  function ExitStatus(status) {
      this.name = 'ExitStatus';
      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)>>0)];
      case 'i8': return HEAP8[((ptr)>>0)];
      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)>>0)] = value; break;
      case 'i8': HEAP8[((ptr)>>0)] = value; break;
      case 'i16': HEAP16[((ptr)>>1)] = value; break;
      case 'i32': HEAP32[((ptr)>>2)] = value; break;
      case 'i64': 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 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('utf8') : 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, maxBytesToRead) => {
      var endIdx = idx + maxBytesToRead;
      var endPtr = idx;
      // TextDecoder needs to know the byte length in advance, it doesn't stop on
      // null terminator by itself.  Also, use the length info to avoid running tiny
      // strings through TextDecoder, since .subarray() allocates garbage.
      // (As a tiny code save trick, compare endPtr against endIdx using a negation,
      // so that undefined means Infinity)
      while (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']);
    };

  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:function() {
        var paths = Array.prototype.slice.call(arguments);
        return 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:function() {
        var resolvedPath = '',
          resolvedAbsolute = false;
        for (var i = arguments.length - 1; i >= -1 && !resolvedAbsolute; i--) {
          var path = (i >= 0) ? arguments[i] : FS.cwd();
          // Skip empty and invalid entries
          if (typeof path != 'string') {
            throw new TypeError('Arguments to path.resolve must be strings');
          } else if (!path) {
            return ''; // an invalid portion invalidates the whole thing
          }
          resolvedPath = path + '/' + resolvedPath;
          resolvedAbsolute = PATH.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);
          } catch(e) {
            // Cross-platform differences: on Windows, reading EOF throws an exception, but on other OSes,
            // reading EOF returns 0. Uniformize behavior by treating the EOF exception to return 0.
            if (e.toString().includes('EOF')) bytesRead = 0;
            else throw e;
          }
  
          if (bytesRead > 0) {
            result = buf.slice(0, bytesRead).toString('utf-8');
          } else {
            result = null;
          }
        } else
        if (typeof window != 'undefined' &&
          typeof window.prompt == 'function') {
          // Browser.
          result = window.prompt('Input: ');  // returns null on cancel
          if (result !== null) {
            result += '\n';
          }
        } else if (typeof readline == 'function') {
          // Command line.
          result = readline();
          if (result !== null) {
            result += '\n';
          }
        }
        if (!result) {
          return null;
        }
        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, 0));
            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, 0));
            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, 0));
            tty.output = [];
          } else {
            if (val != 0) tty.output.push(val);
          }
        },
  fsync(tty) {
          if (tty.output && tty.output.length > 0) {
            err(UTF8ArrayToString(tty.output, 0));
            tty.output = [];
          }
        },
  },
  };
  
  
  var zeroMemory = (address, size) => {
      HEAPU8.fill(0, address, address + size);
      return address;
    };
  
  var alignMemory = (size, alignment) => {
      assert(alignment, "alignment argument is required");
      return Math.ceil(size / alignment) * alignment;
    };
  var mmapAlloc = (size) => {
      size = alignMemory(size, 65536);
      var ptr = _emscripten_builtin_memalign(65536, size);
      if (!ptr) return 0;
      return zeroMemory(ptr, size);
    };
  var MEMFS = {
  ops_table:null,
  mount(mount) {
        return MEMFS.createNode(null, '/', 16384 | 511 /* 0777 */, 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 FS.genericErrors[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;
          old_node.parent = new_dir;
        },
  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, 511 /* 0777 */ | 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.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 {
            // Try to avoid unnecessary slices.
            if (position > 0 || position + length < contents.length) {
              if (contents.subarray) {
                contents = contents.subarray(position, position + length);
              } else {
                contents = Array.prototype.slice.call(contents, position, position + length);
              }
            }
            allocated = true;
            ptr = mmapAlloc(length);
            if (!ptr) {
              throw new FS.ErrnoError(48);
            }
            HEAP8.set(contents, ptr);
          }
          return { ptr, 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 ${url}`) : '';
      readAsync(url, (arrayBuffer) => {
        assert(arrayBuffer, `Loading data file "${url}" failed (no arrayBuffer).`);
        onload(new Uint8Array(arrayBuffer));
        if (dep) removeRunDependency(dep);
      }, (event) => {
        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 ERRNO_MESSAGES = {
  0:"Success",
  1:"Arg list too long",
  2:"Permission denied",
  3:"Address already in use",
  4:"Address not available",
  5:"Address family not supported by protocol family",
  6:"No more processes",
  7:"Socket already connected",
  8:"Bad file number",
  9:"Trying to read unreadable message",
  10:"Mount device busy",
  11:"Operation canceled",
  12:"No children",
  13:"Connection aborted",
  14:"Connection refused",
  15:"Connection reset by peer",
  16:"File locking deadlock error",
  17:"Destination address required",
  18:"Math arg out of domain of func",
  19:"Quota exceeded",
  20:"File exists",
  21:"Bad address",
  22:"File too large",
  23:"Host is unreachable",
  24:"Identifier removed",
  25:"Illegal byte sequence",
  26:"Connection already in progress",
  27:"Interrupted system call",
  28:"Invalid argument",
  29:"I/O error",
  30:"Socket is already connected",
  31:"Is a directory",
  32:"Too many symbolic links",
  33:"Too many open files",
  34:"Too many links",
  35:"Message too long",
  36:"Multihop attempted",
  37:"File or path name too long",
  38:"Network interface is not configured",
  39:"Connection reset by network",
  40:"Network is unreachable",
  41:"Too many open files in system",
  42:"No buffer space available",
  43:"No such device",
  44:"No such file or directory",
  45:"Exec format error",
  46:"No record locks available",
  47:"The link has been severed",
  48:"Not enough core",
  49:"No message of desired type",
  50:"Protocol not available",
  51:"No space left on device",
  52:"Function not implemented",
  53:"Socket is not connected",
  54:"Not a directory",
  55:"Directory not empty",
  56:"State not recoverable",
  57:"Socket operation on non-socket",
  59:"Not a typewriter",
  60:"No such device or address",
  61:"Value too large for defined data type",
  62:"Previous owner died",
  63:"Not super-user",
  64:"Broken pipe",
  65:"Protocol error",
  66:"Unknown protocol",
  67:"Protocol wrong type for socket",
  68:"Math result not representable",
  69:"Read only file system",
  70:"Illegal seek",
  71:"No such process",
  72:"Stale file handle",
  73:"Connection timed out",
  74:"Text file busy",
  75:"Cross-device link",
  100:"Device not a stream",
  101:"Bad font file fmt",
  102:"Invalid slot",
  103:"Invalid request code",
  104:"No anode",
  105:"Block device required",
  106:"Channel number out of range",
  107:"Level 3 halted",
  108:"Level 3 reset",
  109:"Link number out of range",
  110:"Protocol driver not attached",
  111:"No CSI structure available",
  112:"Level 2 halted",
  113:"Invalid exchange",
  114:"Invalid request descriptor",
  115:"Exchange full",
  116:"No data (for no delay io)",
  117:"Timer expired",
  118:"Out of streams resources",
  119:"Machine is not on the network",
  120:"Package not installed",
  121:"The object is remote",
  122:"Advertise error",
  123:"Srmount error",
  124:"Communication error on send",
  125:"Cross mount point (not really error)",
  126:"Given log. name not unique",
  127:"f.d. invalid for this operation",
  128:"Remote address changed",
  129:"Can   access a needed shared lib",
  130:"Accessing a corrupted shared lib",
  131:".lib section in a.out corrupted",
  132:"Attempting to link in too many libs",
  133:"Attempting to exec a shared library",
  135:"Streams pipe error",
  136:"Too many users",
  137:"Socket type not supported",
  138:"Not supported",
  139:"Protocol family not supported",
  140:"Can't send after socket shutdown",
  141:"Too many references",
  142:"Host is down",
  148:"No medium (in tape drive)",
  156:"Level 2 not synchronized",
  };
  
  var ERRNO_CODES = {
      'EPERM': 63,
      'ENOENT': 44,
      'ESRCH': 71,
      'EINTR': 27,
      'EIO': 29,
      'ENXIO': 60,
      'E2BIG': 1,
      'ENOEXEC': 45,
      'EBADF': 8,
      'ECHILD': 12,
      'EAGAIN': 6,
      'EWOULDBLOCK': 6,
      'ENOMEM': 48,
      'EACCES': 2,
      'EFAULT': 21,
      'ENOTBLK': 105,
      'EBUSY': 10,
      'EEXIST': 20,
      'EXDEV': 75,
      'ENODEV': 43,
      'ENOTDIR': 54,
      'EISDIR': 31,
      'EINVAL': 28,
      'ENFILE': 41,
      'EMFILE': 33,
      'ENOTTY': 59,
      'ETXTBSY': 74,
      'EFBIG': 22,
      'ENOSPC': 51,
      'ESPIPE': 70,
      'EROFS': 69,
      'EMLINK': 34,
      'EPIPE': 64,
      'EDOM': 18,
      'ERANGE': 68,
      'ENOMSG': 49,
      'EIDRM': 24,
      'ECHRNG': 106,
      'EL2NSYNC': 156,
      'EL3HLT': 107,
      'EL3RST': 108,
      'ELNRNG': 109,
      'EUNATCH': 110,
      'ENOCSI': 111,
      'EL2HLT': 112,
      'EDEADLK': 16,
      'ENOLCK': 46,
      'EBADE': 113,
      'EBADR': 114,
      'EXFULL': 115,
      'ENOANO': 104,
      'EBADRQC': 103,
      'EBADSLT': 102,
      'EDEADLOCK': 16,
      'EBFONT': 101,
      'ENOSTR': 100,
      'ENODATA': 116,
      'ETIME': 117,
      'ENOSR': 118,
      'ENONET': 119,
      'ENOPKG': 120,
      'EREMOTE': 121,
      'ENOLINK': 47,
      'EADV': 122,
      'ESRMNT': 123,
      'ECOMM': 124,
      'EPROTO': 65,
      'EMULTIHOP': 36,
      'EDOTDOT': 125,
      'EBADMSG': 9,
      'ENOTUNIQ': 126,
      'EBADFD': 127,
      'EREMCHG': 128,
      'ELIBACC': 129,
      'ELIBBAD': 130,
      'ELIBSCN': 131,
      'ELIBMAX': 132,
      'ELIBEXEC': 133,
      'ENOSYS': 52,
      'ENOTEMPTY': 55,
      'ENAMETOOLONG': 37,
      'ELOOP': 32,
      'EOPNOTSUPP': 138,
      'EPFNOSUPPORT': 139,
      'ECONNRESET': 15,
      'ENOBUFS': 42,
      'EAFNOSUPPORT': 5,
      'EPROTOTYPE': 67,
      'ENOTSOCK': 57,
      'ENOPROTOOPT': 50,
      'ESHUTDOWN': 140,
      'ECONNREFUSED': 14,
      'EADDRINUSE': 3,
      'ECONNABORTED': 13,
      'ENETUNREACH': 40,
      'ENETDOWN': 38,
      'ETIMEDOUT': 73,
      'EHOSTDOWN': 142,
      'EHOSTUNREACH': 23,
      'EINPROGRESS': 26,
      'EALREADY': 7,
      'EDESTADDRREQ': 17,
      'EMSGSIZE': 35,
      'EPROTONOSUPPORT': 66,
      'ESOCKTNOSUPPORT': 137,
      'EADDRNOTAVAIL': 4,
      'ENETRESET': 39,
      'EISCONN': 30,
      'ENOTCONN': 53,
      'ETOOMANYREFS': 141,
      'EUSERS': 136,
      'EDQUOT': 19,
      'ESTALE': 72,
      'ENOTSUP': 138,
      'ENOMEDIUM': 148,
      'EILSEQ': 25,
      'EOVERFLOW': 61,
      'ECANCELED': 11,
      'ENOTRECOVERABLE': 56,
      'EOWNERDEAD': 62,
      'ESTRPIPE': 135,
    };
  var FS = {
  root:null,
  mounts:[],
  devices:{
  },
  streams:[],
  nextInode:1,
  nameTable:null,
  currentPath:"/",
  initialized:false,
  ignorePermissions:true,
  ErrnoError:class extends Error {
        // 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(ERRNO_MESSAGES[errno]);
          // TODO(sbc): Use the inline member delclaration syntax once we
          // support it in acorn and closure.
          this.name = 'ErrnoError';
          this.errno = errno;
          for (var key in ERRNO_CODES) {
            if (ERRNO_CODES[key] === errno) {
              this.code = key;
              break;
            }
          }
        }
      },
  genericErrors:{
  },
  filesystems:null,
  syncFSRequests:0,
  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) {
        if (!FS.FSStream) {
          FS.FSStream = /** @constructor */ function() {
            this.shared = { };
          };
          FS.FSStream.prototype = {};
          Object.defineProperties(FS.FSStream.prototype, {
            object: {
              /** @this {FS.FSStream} */
              get() { return this.node; },
              /** @this {FS.FSStream} */
              set(val) { this.node = val; }
            },
            isRead: {
              /** @this {FS.FSStream} */
              get() { return (this.flags & 2097155) !== 1; }
            },
            isWrite: {
              /** @this {FS.FSStream} */
              get() { return (this.flags & 2097155) !== 0; }
            },
            isAppend: {
              /** @this {FS.FSStream} */
              get() { return (this.flags & 1024); }
            },
            flags: {
              /** @this {FS.FSStream} */
              get() { return this.shared.flags; },
              /** @this {FS.FSStream} */
              set(val) { this.shared.flags = val; },
            },
            position : {
              /** @this {FS.FSStream} */
              get() { return this.shared.position; },
              /** @this {FS.FSStream} */
              set(val) { this.shared.position = val; },
            },
          });
        }
        // 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;
      },
  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.apply(check, 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);
      },
  create(path, mode) {
        mode = mode !== undefined ? mode : 438 /* 0666 */;
        mode &= 4095;
        mode |= 32768;
        return FS.mknod(path, mode, 0);
      },
  mkdir(path, mode) {
        mode = mode !== undefined ? mode : 511 /* 0777 */;
        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 = 438 /* 0666 */;
        }
        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 existant directories percolate up
        lookup = FS.lookupPath(old_path, { parent: true });
        old_dir = lookup.node;
        lookup = FS.lookupPath(new_path, { parent: true });
        new_dir = lookup.node;
  
        if (!old_dir || !new_dir) throw new FS.ErrnoError(44);
        // need to be part of the same mount
        if (old_dir.mount !== new_dir.mount) {
          throw new FS.ErrnoError(75);
        }
        // source must exist
        var old_node = FS.lookupNode(old_dir, old_name);
        // old path should not be an ancestor of the new path
        var relative = PATH_FS.relative(old_path, new_dirname);
        if (relative.charAt(0) !== '.') {
          throw new FS.ErrnoError(28);
        }
        // new path should not be an ancestor of the old path
        relative = PATH_FS.relative(new_path, old_dirname);
        if (relative.charAt(0) !== '.') {
          throw new FS.ErrnoError(55);
        }
        // see if the new path already exists
        var new_node;
        try {
          new_node = FS.lookupNode(new_dir, new_name);
        } catch (e) {
          // not fatal
        }
        // early out if nothing needs to change
        if (old_node === new_node) {
          return;
        }
        // we'll need to delete the old entry
        var isdir = FS.isDir(old_node.mode);
        var errCode = FS.mayDelete(old_dir, old_name, isdir);
        if (errCode) {
          throw new FS.ErrnoError(errCode);
        }
        // need delete permissions if we'll be overwriting.
        // need create permissions if new doesn't already exist.
        errCode = new_node ?
          FS.mayDelete(new_dir, new_name, isdir) :
          FS.mayCreate(new_dir, new_name);
        if (errCode) {
          throw new FS.ErrnoError(errCode);
        }
        if (!old_dir.node_ops.rename) {
          throw new FS.ErrnoError(63);
        }
        if (FS.isMountpoint(old_node) || (new_node && FS.isMountpoint(new_node))) {
          throw new FS.ErrnoError(10);
        }
        // if we are going to change the parent, check write permissions
        if (new_dir !== old_dir) {
          errCode = FS.nodePermissions(old_dir, 'w');
          if (errCode) {
            throw new FS.ErrnoError(errCode);
          }
        }
        // remove the node from the lookup hash
        FS.hashRemoveNode(old_node);
        // do the underlying fs rename
        try {
          old_dir.node_ops.rename(old_node, new_dir, new_name);
        } catch (e) {
          throw e;
        } finally {
          // add the node back to the hash (in case node_ops.rename
          // changed its name)
          FS.hashAddNode(old_node);
        }
      },
  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 PATH_FS.resolve(FS.getPath(link.parent), 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) {
        if (path === "") {
          throw new FS.ErrnoError(44);
        }
        flags = typeof flags == 'string' ? FS_modeStringToFlags(flags) : flags;
        mode = typeof mode == 'undefined' ? 438 /* 0666 */ : mode;
        if ((flags & 64)) {
          mode = (mode & 4095) | 32768;
        } else {
          mode = 0;
        }
        var node;
        if (typeof path == 'object') {
          node = path;
        } else {
          path = PATH.normalize(path);
          try {
            var lookup = FS.lookupPath(path, {
              follow: !(flags & 131072)
            });
            node = lookup.node;
          } catch (e) {
            // ignore
          }
        }
        // perhaps we need to create the node
        var created = false;
        if ((flags & 64)) {
          if (node) {
            // if O_CREAT and O_EXCL are set, error out if the node already exists
            if ((flags & 128)) {
              throw new FS.ErrnoError(20);
            }
          } else {
            // node doesn't exist, try to create it
            node = FS.mknod(path, mode, 0);
            created = true;
          }
        }
        if (!node) {
          throw new FS.ErrnoError(44);
        }
        // can't truncate a device
        if (FS.isChrdev(node.mode)) {
          flags &= ~512;
        }
        // if asked only for a directory, then this must be one
        if ((flags & 65536) && !FS.isDir(node.mode)) {
          throw new FS.ErrnoError(54);
        }
        // check permissions, if this is not a file we just created now (it is ok to
        // create and write to a file with read-only permissions; it is read-only
        // for later use)
        if (!created) {
          var errCode = FS.mayOpen(node, flags);
          if (errCode) {
            throw new FS.ErrnoError(errCode);
          }
        }
        // do truncation if necessary
        if ((flags & 512) && !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 (!FS.readFiles) FS.readFiles = {};
          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);
        }
        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);
      },
  munmap:(stream) => 0,
  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, 0);
        } 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,
        });
        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', 16384 | 511 /* 0777 */, 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() {
        // TODO deprecate the old functionality of a single
        // input / output callback and that utilizes FS.createDevice
        // and instead require a unique set of stream ops
  
        // by default, we symlink the standard streams to the
        // default tty devices. however, if the standard streams
        // have been overwritten we create a unique device for
        // them instead.
        if (Module['stdin']) {
          FS.createDevice('/dev', 'stdin', Module['stdin']);
        } else {
          FS.symlink('/dev/tty', '/dev/stdin');
        }
        if (Module['stdout']) {
          FS.createDevice('/dev', 'stdout', null, Module['stdout']);
        } else {
          FS.symlink('/dev/tty', '/dev/stdout');
        }
        if (Module['stderr']) {
          FS.createDevice('/dev', 'stderr', null, Module['stderr']);
        } else {
          FS.symlink('/dev/tty1', '/dev/stderr');
        }
  
        // open default streams for the stdin, stdout and stderr devices
        var stdin = FS.open('/dev/stdin', 0);
        var stdout = FS.open('/dev/stdout', 1);
        var stderr = FS.open('/dev/stderr', 1);
        assert(stdin.fd === 0, `invalid handle for stdin (${stdin.fd})`);
        assert(stdout.fd === 1, `invalid handle for stdout (${stdout.fd})`);
        assert(stderr.fd === 2, `invalid handle for stderr (${stderr.fd})`);
      },
  staticInit() {
        // Some errors may happen quite a bit, to avoid overhead we reuse them (and suffer a lack of stack info)
        [44].forEach((code) => {
          FS.genericErrors[code] = new FS.ErrnoError(code);
          FS.genericErrors[code].stack = '<generic error, no stack>';
        });
  
        FS.nameTable = new Array(4096);
  
        FS.mount(MEMFS, {}, '/');
  
        FS.createDefaultDirectories();
        FS.createDefaultDevices();
        FS.createSpecialDirectories();
  
        FS.filesystems = {
          'MEMFS': MEMFS,
        };
      },
  init(input, output, error) {
        assert(!FS.init.initialized, 'FS.init was previously called. If you want to initialize later with custom parameters, remove any earlier calls (note that one is automatically added to the generated code)');
        FS.init.initialized = true;
  
        // Allow Module.stdin etc. to provide defaults, if none explicitly passed to us here
        Module['stdin'] = input || Module['stdin'];
        Module['stdout'] = output || Module['stdout'];
        Module['stderr'] = error || Module['stderr'];
  
        FS.createStandardStreams();
      },
  quit() {
        FS.init.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);
        if (!FS.createDevice.major) FS.createDevice.major = 64;
        var dev = FS.makedev(FS.createDevice.major++, 0);
        // Create a fake device that a set of stream ops to emulate
        // the old behavior.
        FS.registerDevice(dev, {
          open(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 if (read_) {
          // Command-line.
          try {
            // WARNING: Can't read binary files in V8's d8 or tracemonkey's js, as
            //          read() will try to parse UTF8.
            obj.contents = intArrayFromString(read_(obj.url), true);
            obj.usedBytes = obj.contents.length;
          } catch (e) {
            throw new FS.ErrnoError(29);
          }
        } else {
          throw new Error('Cannot load without read() or XMLHttpRequest.');
        }
      },
  createLazyFile(parent, name, url, canRead, canWrite) {
        // Lazy chunked Uint8Array (implements get and length from Uint8Array). Actual getting is abstracted away for eventual reuse.
        /** @constructor */
        function LazyUint8Array() {
          this.lengthKnown = false;
          this.chunks = []; // Loaded chunks. Index is the chunk number
        }
        LazyUint8Array.prototype.get = /** @this{Object} */ function LazyUint8Array_get(idx) {
          if (idx > this.length-1 || idx < 0) {
            return undefined;
          }
          var chunkOffset = idx % this.chunkSize;
          var chunkNum = (idx / this.chunkSize)|0;
          return this.getter(chunkNum)[chunkOffset];
        };
        LazyUint8Array.prototype.setDataGetter = function LazyUint8Array_setDataGetter(getter) {
          this.getter = getter;
        };
        LazyUint8Array.prototype.cacheLength = function LazyUint8Array_cacheLength() {
          // Find length
          var xhr = new XMLHttpRequest();
          xhr.open('HEAD', url, false);
          xhr.send(null);
          if (!(xhr.status >= 200 && xhr.status < 300 || xhr.status === 304)) throw new Error("Couldn't load " + url + ". Status: " + xhr.status);
          var datalength = Number(xhr.getResponseHeader("Content-length"));
          var header;
          var hasByteServing = (header = xhr.getResponseHeader("Accept-Ranges")) && header === "bytes";
          var usesGzip = (header = xhr.getResponseHeader("Content-Encoding")) && header === "gzip";
  
          var chunkSize = 1024*1024; // Chunk size in bytes
  
          if (!hasByteServing) chunkSize = datalength;
  
          // Function to get a range from the remote URL.
          var doXHR = (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;
        };
        if (typeof XMLHttpRequest != 'undefined') {
          if (!ENVIRONMENT_IS_WORKER) throw 'Cannot do synchronous binary XHRs outside webworkers in modern browsers. Use --embed-file or --preload-file in emcc';
          var lazyArray = new LazyUint8Array();
          Object.defineProperties(lazyArray, {
            length: {
              get: /** @this{Object} */ function() {
                if (!this.lengthKnown) {
                  this.cacheLength();
                }
                return this._length;
              }
            },
            chunkSize: {
              get: /** @this{Object} */ function() {
                if (!this.lengthKnown) {
                  this.cacheLength();
                }
                return this._chunkSize;
              }
            }
          });
  
          var properties = { isDevice: false, contents: lazyArray };
        } else {
          var properties = { isDevice: false, url: url };
        }
  
        var node = FS.createFile(parent, name, properties, canRead, canWrite);
        // This is a total hack, but I want to get this lazy file code out of the
        // core of MEMFS. If we want to keep this lazy file concept I feel it should
        // be its own thin LAZYFS proxying calls to MEMFS.
        if (properties.contents) {
          node.contents = properties.contents;
        } else if (properties.url) {
          node.contents = null;
          node.url = properties.url;
        }
        // Add a function that defers querying the file size until it is asked the first time.
        Object.defineProperties(node, {
          usedBytes: {
            get: /** @this {FSNode} */ function() { return this.contents.length; }
          }
        });
        // override each stream op with one that tries to force load the lazy file first
        var stream_ops = {};
        var keys = Object.keys(node.stream_ops);
        keys.forEach((key) => {
          var fn = node.stream_ops[key];
          stream_ops[key] = function forceLoadLazyFile() {
            FS.forceLoadFile(node);
            return fn.apply(null, arguments);
          };
        });
        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;
        (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;
        (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;
        (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);
      },
  varargs:undefined,
  get() {
        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;
      },
  getp() { return SYSCALLS.get() },
  getStr(ptr) {
        var ret = UTF8ToString(ptr);
        return ret;
      },
  getStreamFromFD(fd) {
        var stream = FS.getStreamChecked(fd);
        return stream;
      },
  };
  function ___syscall_fcntl64(fd, cmd, varargs) {
  SYSCALLS.varargs = varargs;
  try {
  
      var stream = SYSCALLS.getStreamFromFD(fd);
      switch (cmd) {
        case 0: {
          var arg = SYSCALLS.get();
          if (arg < 0) {
            return -28;
          }
          while (FS.streams[arg]) {
            arg++;
          }
          var newStream;
          newStream = FS.createStream(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 = SYSCALLS.get();
          stream.flags |= arg;
          return 0;
        }
        case 12: {
          var arg = SYSCALLS.getp();
          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_fstat64(fd, buf) {
  try {
  
      var stream = SYSCALLS.getStreamFromFD(fd);
      return SYSCALLS.doStat(FS.stat, stream.path, buf);
    } 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 = SYSCALLS.getp();
            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))>>0)] = 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 = SYSCALLS.getp();
            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))>>0)]);
            }
            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 = SYSCALLS.getp();
          HEAP32[((argp)>>2)] = 0;
          return 0;
        }
        case 21520: {
          if (!stream.tty) return -59;
          return -28; // not supported
        }
        case 21531: {
          var argp = SYSCALLS.getp();
          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 = SYSCALLS.getp();
            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_lstat64(path, buf) {
  try {
  
      path = SYSCALLS.getStr(path);
      return SYSCALLS.doStat(FS.lstat, path, buf);
    } catch (e) {
    if (typeof FS == 'undefined' || !(e.name === 'ErrnoError')) throw e;
    return -e.errno;
  }
  }

  function ___syscall_mkdirat(dirfd, path, mode) {
  try {
  
      path = SYSCALLS.getStr(path);
      path = SYSCALLS.calculateAt(dirfd, path);
      // remove a trailing slash, if one - /a/b/ has basename of '', but
      // we want to create b in the context of this function
      path = PATH.normalize(path);
      if (path[path.length-1] === '/') path = path.substr(0, path.length-1);
      FS.mkdir(path, mode, 0);
      return 0;
    } catch (e) {
    if (typeof FS == 'undefined' || !(e.name === 'ErrnoError')) throw e;
    return -e.errno;
  }
  }

  function ___syscall_newfstatat(dirfd, path, buf, flags) {
  try {
  
      path = SYSCALLS.getStr(path);
      var nofollow = flags & 256;
      var allowEmpty = flags & 4096;
      flags = flags & (~6400);
      assert(!flags, `unknown flags in __syscall_newfstatat: ${flags}`);
      path = SYSCALLS.calculateAt(dirfd, path, allowEmpty);
      return SYSCALLS.doStat(nofollow ? FS.lstat : FS.stat, path, buf);
    } 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 ? SYSCALLS.get() : 0;
      return FS.open(path, flags, mode).fd;
    } catch (e) {
    if (typeof FS == 'undefined' || !(e.name === 'ErrnoError')) throw e;
    return -e.errno;
  }
  }

  function ___syscall_stat64(path, buf) {
  try {
  
      path = SYSCALLS.getStr(path);
      return SYSCALLS.doStat(FS.stat, path, buf);
    } catch (e) {
    if (typeof FS == 'undefined' || !(e.name === 'ErrnoError')) throw e;
    return -e.errno;
  }
  }

  var _abort = () => {
      abort('native code called abort()');
    };

  var readEmAsmArgsArray = [];
  var readEmAsmArgs = (sigPtr, buf) => {
      // Nobody should have mutated _readEmAsmArgsArray underneath us to be something else than an array.
      assert(Array.isArray(readEmAsmArgsArray));
      // The input buffer is allocated on the stack, so it must be stack-aligned.
      assert(buf % 16 == 0);
      readEmAsmArgsArray.length = 0;
      var ch;
      // Most arguments are i32s, so shift the buffer pointer so it is a plain
      // index into HEAP32.
      while (ch = HEAPU8[sigPtr++]) {
        var chr = String.fromCharCode(ch);
        var validChars = ['d', 'f', 'i', 'p'];
        assert(validChars.includes(chr), `Invalid character ${ch}("${chr}") in readEmAsmArgs! Use only [${validChars}], and do not specify "v" for void return argument.`);
        // Floats are always passed as doubles, so all types except for 'i'
        // are 8 bytes and require alignment.
        var wide = (ch != 105);
        wide &= (ch != 112);
        buf += wide && (buf % 8) ? 4 : 0;
        readEmAsmArgsArray.push(
          // Special case for pointers under wasm64 or CAN_ADDRESS_2GB mode.
          ch == 112 ? HEAPU32[((buf)>>2)] :
          ch == 105 ?
            HEAP32[((buf)>>2)] :
            HEAPF64[((buf)>>3)]
        );
        buf += wide ? 8 : 4;
      }
      return readEmAsmArgsArray;
    };
  var runEmAsmFunction = (code, sigPtr, argbuf) => {
      var args = readEmAsmArgs(sigPtr, argbuf);
      assert(ASM_CONSTS.hasOwnProperty(code), `No EM_ASM constant found at address ${code}.  The loaded WebAssembly file is likely out of sync with the generated JavaScript.`);
      return ASM_CONSTS[code].apply(null, args);
    };
  var _emscripten_asm_const_int = (code, sigPtr, argbuf) => {
      return runEmAsmFunction(code, sigPtr, argbuf);
    };

  var _emscripten_get_device_pixel_ratio = () => {
      return (typeof devicePixelRatio == 'number' && devicePixelRatio) || 1.0;
    };

  
  var withStackSave = (f) => {
      var stack = stackSave();
      var ret = f();
      stackRestore(stack);
      return ret;
    };
  var JSEvents = {
  removeAllEventListeners() {
        while (JSEvents.eventHandlers.length) {
          JSEvents._removeHandler(JSEvents.eventHandlers.length - 1);
        }
        JSEvents.deferredCalls = [];
      },
  inEventHandler:0,
  deferredCalls:[],
  deferCall(targetFunction, precedence, argsList) {
        function arraysHaveEqualContent(arrA, arrB) {
          if (arrA.length != arrB.length) return false;
  
          for (var i in arrA) {
            if (arrA[i] != arrB[i]) return false;
          }
          return true;
        }
        // Test if the given call was already queued, and if so, don't add it again.
        for (var i in JSEvents.deferredCalls) {
          var call = JSEvents.deferredCalls[i];
          if (call.targetFunction == targetFunction && arraysHaveEqualContent(call.argsList, argsList)) {
            return;
          }
        }
        JSEvents.deferredCalls.push({
          targetFunction,
          precedence,
          argsList
        });
  
        JSEvents.deferredCalls.sort((x,y) => x.precedence < y.precedence);
      },
  removeDeferredCalls(targetFunction) {
        for (var i = 0; i < JSEvents.deferredCalls.length; ++i) {
          if (JSEvents.deferredCalls[i].targetFunction == targetFunction) {
            JSEvents.deferredCalls.splice(i, 1);
            --i;
          }
        }
      },
  canPerformEventHandlerRequests() {
        if (navigator.userActivation) {
          // Verify against transient activation status from UserActivation API
          // whether it is possible to perform a request here without needing to defer. See
          // https://developer.mozilla.org/en-US/docs/Web/Security/User_activation#transient_activation
          // and https://caniuse.com/mdn-api_useractivation
          // At the time of writing, Firefox does not support this API: https://bugzilla.mozilla.org/show_bug.cgi?id=1791079
          return navigator.userActivation.isActive;
        }
  
        return JSEvents.inEventHandler && JSEvents.currentEventHandler.allowsDeferredCalls;
      },
  runDeferredCalls() {
        if (!JSEvents.canPerformEventHandlerRequests()) {
          return;
        }
        for (var i = 0; i < JSEvents.deferredCalls.length; ++i) {
          var call = JSEvents.deferredCalls[i];
          JSEvents.deferredCalls.splice(i, 1);
          --i;
          call.targetFunction.apply(null, call.argsList);
        }
      },
  eventHandlers:[],
  removeAllHandlersOnTarget:(target, eventTypeString) => {
        for (var i = 0; i < JSEvents.eventHandlers.length; ++i) {
          if (JSEvents.eventHandlers[i].target == target &&
            (!eventTypeString || eventTypeString == JSEvents.eventHandlers[i].eventTypeString)) {
             JSEvents._removeHandler(i--);
           }
        }
      },
  _removeHandler(i) {
        var h = JSEvents.eventHandlers[i];
        h.target.removeEventListener(h.eventTypeString, h.eventListenerFunc, h.useCapture);
        JSEvents.eventHandlers.splice(i, 1);
      },
  registerOrRemoveHandler(eventHandler) {
        if (!eventHandler.target) {
          err('registerOrRemoveHandler: the target element for event handler registration does not exist, when processing the following event handler registration:');
          console.dir(eventHandler);
          return -4;
        }
        if (eventHandler.callbackfunc) {
          eventHandler.eventListenerFunc = function(event) {
            // Increment nesting count for the event handler.
            ++JSEvents.inEventHandler;
            JSEvents.currentEventHandler = eventHandler;
            // Process any old deferred calls the user has placed.
            JSEvents.runDeferredCalls();
            // Process the actual event, calls back to user C code handler.
            eventHandler.handlerFunc(event);
            // Process any new deferred calls that were placed right now from this event handler.
            JSEvents.runDeferredCalls();
            // Out of event handler - restore nesting count.
            --JSEvents.inEventHandler;
          };
  
          eventHandler.target.addEventListener(eventHandler.eventTypeString,
                                               eventHandler.eventListenerFunc,
                                               eventHandler.useCapture);
          JSEvents.eventHandlers.push(eventHandler);
        } else {
          for (var i = 0; i < JSEvents.eventHandlers.length; ++i) {
            if (JSEvents.eventHandlers[i].target == eventHandler.target
             && JSEvents.eventHandlers[i].eventTypeString == eventHandler.eventTypeString) {
               JSEvents._removeHandler(i--);
             }
          }
        }
        return 0;
      },
  getNodeNameForTarget(target) {
        if (!target) return '';
        if (target == window) return '#window';
        if (target == screen) return '#screen';
        return target?.nodeName || '';
      },
  fullscreenEnabled() {
        return document.fullscreenEnabled
        // Safari 13.0.3 on macOS Catalina 10.15.1 still ships with prefixed webkitFullscreenEnabled.
        // TODO: If Safari at some point ships with unprefixed version, update the version check above.
        || document.webkitFullscreenEnabled
         ;
      },
  };
  
  var maybeCStringToJsString = (cString) => {
      // "cString > 2" checks if the input is a number, and isn't of the special
      // values we accept here, EMSCRIPTEN_EVENT_TARGET_* (which map to 0, 1, 2).
      // In other words, if cString > 2 then it's a pointer to a valid place in
      // memory, and points to a C string.
      return cString > 2 ? UTF8ToString(cString) : cString;
    };
  
  var specialHTMLTargets = [0, typeof document != 'undefined' ? document : 0, typeof window != 'undefined' ? window : 0];
  var findEventTarget = (target) => {
      target = maybeCStringToJsString(target);
      var domElement = specialHTMLTargets[target] || (typeof document != 'undefined' ? document.querySelector(target) : undefined);
      return domElement;
    };
  
  var getBoundingClientRect = (e) => specialHTMLTargets.indexOf(e) < 0 ? e.getBoundingClientRect() : {'left':0,'top':0};
  var _emscripten_get_element_css_size = (target, width, height) => {
      target = findEventTarget(target);
      if (!target) return -4;
  
      var rect = getBoundingClientRect(target);
      HEAPF64[((width)>>3)] = rect.width;
      HEAPF64[((height)>>3)] = rect.height;
  
      return 0;
    };

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

  var wasmTableMirror = [];
  
  var wasmTable;
  var getWasmTableEntry = (funcPtr) => {
      var func = wasmTableMirror[funcPtr];
      if (!func) {
        if (funcPtr >= wasmTableMirror.length) wasmTableMirror.length = funcPtr + 1;
        wasmTableMirror[funcPtr] = func = wasmTable.get(funcPtr);
      }
      assert(wasmTable.get(funcPtr) == func, 'JavaScript-side Wasm function table mirror is out of date!');
      return func;
    };
  var _emscripten_request_animation_frame_loop = (cb, userData) => {
      function tick(timeStamp) {
        if (getWasmTableEntry(cb)(timeStamp, userData)) {
          requestAnimationFrame(tick);
        }
      }
      return requestAnimationFrame(tick);
    };

  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 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 registerFocusEventCallback = (target, userData, useCapture, callbackfunc, eventTypeId, eventTypeString, targetThread) => {
      if (!JSEvents.focusEvent) JSEvents.focusEvent = _malloc(256);
  
      var focusEventHandlerFunc = (e = event) => {
        var nodeName = JSEvents.getNodeNameForTarget(e.target);
        var id = e.target.id ? e.target.id : '';
  
        var focusEvent = JSEvents.focusEvent;
        stringToUTF8(nodeName, focusEvent + 0, 128);
        stringToUTF8(id, focusEvent + 128, 128);
  
        if (getWasmTableEntry(callbackfunc)(eventTypeId, focusEvent, userData)) e.preventDefault();
      };
  
      var eventHandler = {
        target: findEventTarget(target),
        eventTypeString,
        callbackfunc,
        handlerFunc: focusEventHandlerFunc,
        useCapture
      };
      return JSEvents.registerOrRemoveHandler(eventHandler);
    };
  var _emscripten_set_blur_callback_on_thread = (target, userData, useCapture, callbackfunc, targetThread) =>
      registerFocusEventCallback(target, userData, useCapture, callbackfunc, 12, "blur", targetThread);

  
  var findCanvasEventTarget = findEventTarget;
  var _emscripten_set_canvas_element_size = (target, width, height) => {
      var canvas = findCanvasEventTarget(target);
      if (!canvas) return -4;
      canvas.width = width;
      canvas.height = height;
      return 0;
    };

  var _emscripten_set_focus_callback_on_thread = (target, userData, useCapture, callbackfunc, targetThread) =>
      registerFocusEventCallback(target, userData, useCapture, callbackfunc, 13, "focus", targetThread);

  
  
  
  
  var registerKeyEventCallback = (target, userData, useCapture, callbackfunc, eventTypeId, eventTypeString, targetThread) => {
      if (!JSEvents.keyEvent) JSEvents.keyEvent = _malloc(176);
  
      var keyEventHandlerFunc = (e) => {
        assert(e);
  
        var keyEventData = JSEvents.keyEvent;
        HEAPF64[((keyEventData)>>3)] = e.timeStamp;
  
        var idx =((keyEventData)>>2);
  
        HEAP32[idx + 2] = e.location;
        HEAP32[idx + 3] = e.ctrlKey;
        HEAP32[idx + 4] = e.shiftKey;
        HEAP32[idx + 5] = e.altKey;
        HEAP32[idx + 6] = e.metaKey;
        HEAP32[idx + 7] = e.repeat;
        HEAP32[idx + 8] = e.charCode;
        HEAP32[idx + 9] = e.keyCode;
        HEAP32[idx + 10] = e.which;
        stringToUTF8(e.key || '', keyEventData + 44, 32);
        stringToUTF8(e.code || '', keyEventData + 76, 32);
        stringToUTF8(e.char || '', keyEventData + 108, 32);
        stringToUTF8(e.locale || '', keyEventData + 140, 32);
  
        if (getWasmTableEntry(callbackfunc)(eventTypeId, keyEventData, userData)) e.preventDefault();
      };
  
      var eventHandler = {
        target: findEventTarget(target),
        eventTypeString,
        callbackfunc,
        handlerFunc: keyEventHandlerFunc,
        useCapture
      };
      return JSEvents.registerOrRemoveHandler(eventHandler);
    };
  var _emscripten_set_keydown_callback_on_thread = (target, userData, useCapture, callbackfunc, targetThread) =>
      registerKeyEventCallback(target, userData, useCapture, callbackfunc, 2, "keydown", targetThread);

  var _emscripten_set_keypress_callback_on_thread = (target, userData, useCapture, callbackfunc, targetThread) =>
      registerKeyEventCallback(target, userData, useCapture, callbackfunc, 1, "keypress", targetThread);

  var _emscripten_set_keyup_callback_on_thread = (target, userData, useCapture, callbackfunc, targetThread) =>
      registerKeyEventCallback(target, userData, useCapture, callbackfunc, 3, "keyup", targetThread);

  
  
  
  var fillMouseEventData = (eventStruct, e, target) => {
      assert(eventStruct % 4 == 0);
      HEAPF64[((eventStruct)>>3)] = e.timeStamp;
      var idx = ((eventStruct)>>2);
      HEAP32[idx + 2] = e.screenX;
      HEAP32[idx + 3] = e.screenY;
      HEAP32[idx + 4] = e.clientX;
      HEAP32[idx + 5] = e.clientY;
      HEAP32[idx + 6] = e.ctrlKey;
      HEAP32[idx + 7] = e.shiftKey;
      HEAP32[idx + 8] = e.altKey;
      HEAP32[idx + 9] = e.metaKey;
      HEAP16[idx*2 + 20] = e.button;
      HEAP16[idx*2 + 21] = e.buttons;
  
      HEAP32[idx + 11] = e["movementX"]
        ;
  
      HEAP32[idx + 12] = e["movementY"]
        ;
  
      var rect = getBoundingClientRect(target);
      HEAP32[idx + 13] = e.clientX - rect.left;
      HEAP32[idx + 14] = e.clientY - rect.top;
  
    };
  
  
  
  var registerMouseEventCallback = (target, userData, useCapture, callbackfunc, eventTypeId, eventTypeString, targetThread) => {
      if (!JSEvents.mouseEvent) JSEvents.mouseEvent = _malloc(72);
      target = findEventTarget(target);
  
      var mouseEventHandlerFunc = (e = event) => {
        // TODO: Make this access thread safe, or this could update live while app is reading it.
        fillMouseEventData(JSEvents.mouseEvent, e, target);
  
        if (getWasmTableEntry(callbackfunc)(eventTypeId, JSEvents.mouseEvent, userData)) e.preventDefault();
      };
  
      var eventHandler = {
        target,
        allowsDeferredCalls: eventTypeString != 'mousemove' && eventTypeString != 'mouseenter' && eventTypeString != 'mouseleave', // Mouse move events do not allow fullscreen/pointer lock requests to be handled in them!
        eventTypeString,
        callbackfunc,
        handlerFunc: mouseEventHandlerFunc,
        useCapture
      };
      return JSEvents.registerOrRemoveHandler(eventHandler);
    };
  var _emscripten_set_mousedown_callback_on_thread = (target, userData, useCapture, callbackfunc, targetThread) =>
      registerMouseEventCallback(target, userData, useCapture, callbackfunc, 5, "mousedown", targetThread);

  var _emscripten_set_mouseenter_callback_on_thread = (target, userData, useCapture, callbackfunc, targetThread) =>
      registerMouseEventCallback(target, userData, useCapture, callbackfunc, 33, "mouseenter", targetThread);

  var _emscripten_set_mouseleave_callback_on_thread = (target, userData, useCapture, callbackfunc, targetThread) =>
      registerMouseEventCallback(target, userData, useCapture, callbackfunc, 34, "mouseleave", targetThread);

  var _emscripten_set_mousemove_callback_on_thread = (target, userData, useCapture, callbackfunc, targetThread) =>
      registerMouseEventCallback(target, userData, useCapture, callbackfunc, 8, "mousemove", targetThread);

  var _emscripten_set_mouseup_callback_on_thread = (target, userData, useCapture, callbackfunc, targetThread) =>
      registerMouseEventCallback(target, userData, useCapture, callbackfunc, 6, "mouseup", targetThread);

  
  
  
  var fillPointerlockChangeEventData = (eventStruct) => {
      var pointerLockElement = document.pointerLockElement || document.mozPointerLockElement || document.webkitPointerLockElement || document.msPointerLockElement;
      var isPointerlocked = !!pointerLockElement;
      // Assigning a boolean to HEAP32 with expected type coercion.
      /** @suppress{checkTypes} */
      HEAP32[((eventStruct)>>2)] = isPointerlocked;
      var nodeName = JSEvents.getNodeNameForTarget(pointerLockElement);
      var id = pointerLockElement?.id || '';
      stringToUTF8(nodeName, eventStruct + 4, 128);
      stringToUTF8(id, eventStruct + 132, 128);
    };
  
  
  
  var registerPointerlockChangeEventCallback = (target, userData, useCapture, callbackfunc, eventTypeId, eventTypeString, targetThread) => {
      if (!JSEvents.pointerlockChangeEvent) JSEvents.pointerlockChangeEvent = _malloc(260);
  
      var pointerlockChangeEventHandlerFunc = (e = event) => {
        var pointerlockChangeEvent = JSEvents.pointerlockChangeEvent;
        fillPointerlockChangeEventData(pointerlockChangeEvent);
  
        if (getWasmTableEntry(callbackfunc)(eventTypeId, pointerlockChangeEvent, userData)) e.preventDefault();
      };
  
      var eventHandler = {
        target,
        eventTypeString,
        callbackfunc,
        handlerFunc: pointerlockChangeEventHandlerFunc,
        useCapture
      };
      return JSEvents.registerOrRemoveHandler(eventHandler);
    };
  
  
  /** @suppress {missingProperties} */
  var _emscripten_set_pointerlockchange_callback_on_thread = (target, userData, useCapture, callbackfunc, targetThread) => {
      // TODO: Currently not supported in pthreads or in --proxy-to-worker mode. (In pthreads mode, document object is not defined)
      if (!document || !document.body || (!document.body.requestPointerLock && !document.body.mozRequestPointerLock && !document.body.webkitRequestPointerLock && !document.body.msRequestPointerLock)) {
        return -1;
      }
  
      target = findEventTarget(target);
      if (!target) return -4;
      registerPointerlockChangeEventCallback(target, userData, useCapture, callbackfunc, 20, "mozpointerlockchange", targetThread);
      registerPointerlockChangeEventCallback(target, userData, useCapture, callbackfunc, 20, "webkitpointerlockchange", targetThread);
      registerPointerlockChangeEventCallback(target, userData, useCapture, callbackfunc, 20, "mspointerlockchange", targetThread);
      return registerPointerlockChangeEventCallback(target, userData, useCapture, callbackfunc, 20, "pointerlockchange", targetThread);
    };

  
  
  
  
  var registerPointerlockErrorEventCallback = (target, userData, useCapture, callbackfunc, eventTypeId, eventTypeString, targetThread) => {
  
      var pointerlockErrorEventHandlerFunc = (e = event) => {
        if (getWasmTableEntry(callbackfunc)(eventTypeId, 0, userData)) e.preventDefault();
      };
  
      var eventHandler = {
        target,
        eventTypeString,
        callbackfunc,
        handlerFunc: pointerlockErrorEventHandlerFunc,
        useCapture
      };
      return JSEvents.registerOrRemoveHandler(eventHandler);
    };
  
  
  /** @suppress {missingProperties} */
  var _emscripten_set_pointerlockerror_callback_on_thread = (target, userData, useCapture, callbackfunc, targetThread) => {
      // TODO: Currently not supported in pthreads or in --proxy-to-worker mode. (In pthreads mode, document object is not defined)
      if (!document || !document.body.requestPointerLock && !document.body.mozRequestPointerLock && !document.body.webkitRequestPointerLock && !document.body.msRequestPointerLock) {
        return -1;
      }
  
      target = findEventTarget(target);
  
      if (!target) return -4;
      registerPointerlockErrorEventCallback(target, userData, useCapture, callbackfunc, 38, "mozpointerlockerror", targetThread);
      registerPointerlockErrorEventCallback(target, userData, useCapture, callbackfunc, 38, "webkitpointerlockerror", targetThread);
      registerPointerlockErrorEventCallback(target, userData, useCapture, callbackfunc, 38, "mspointerlockerror", targetThread);
      return registerPointerlockErrorEventCallback(target, userData, useCapture, callbackfunc, 38, "pointerlockerror", targetThread);
    };

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

  
  
  
  
  var registerTouchEventCallback = (target, userData, useCapture, callbackfunc, eventTypeId, eventTypeString, targetThread) => {
      if (!JSEvents.touchEvent) JSEvents.touchEvent = _malloc(1696);
  
      target = findEventTarget(target);
  
      var touchEventHandlerFunc = (e) => {
        assert(e);
        var t, touches = {}, et = e.touches;
        // To ease marshalling different kinds of touches that browser reports (all touches are listed in e.touches,
        // only changed touches in e.changedTouches, and touches on target at a.targetTouches), mark a boolean in
        // each Touch object so that we can later loop only once over all touches we see to marshall over to Wasm.
  
        for (var i = 0; i < et.length; ++i) {
          t = et[i];
          // Browser might recycle the generated Touch objects between each frame (Firefox on Android), so reset any
          // changed/target states we may have set from previous frame.
          t.isChanged = t.onTarget = 0;
          touches[t.identifier] = t;
        }
        // Mark which touches are part of the changedTouches list.
        for (var i = 0; i < e.changedTouches.length; ++i) {
          t = e.changedTouches[i];
          t.isChanged = 1;
          touches[t.identifier] = t;
        }
        // Mark which touches are part of the targetTouches list.
        for (var i = 0; i < e.targetTouches.length; ++i) {
          touches[e.targetTouches[i].identifier].onTarget = 1;
        }
  
        var touchEvent = JSEvents.touchEvent;
        HEAPF64[((touchEvent)>>3)] = e.timeStamp;
        var idx =((touchEvent)>>2);// Pre-shift the ptr to index to HEAP32 to save code size
        HEAP32[idx + 3] = e.ctrlKey;
        HEAP32[idx + 4] = e.shiftKey;
        HEAP32[idx + 5] = e.altKey;
        HEAP32[idx + 6] = e.metaKey;
        idx += 7; // Advance to the start of the touch array.
        var targetRect = getBoundingClientRect(target);
        var numTouches = 0;
        for (var i in touches) {
          t = touches[i];
          HEAP32[idx + 0] = t.identifier;
          HEAP32[idx + 1] = t.screenX;
          HEAP32[idx + 2] = t.screenY;
          HEAP32[idx + 3] = t.clientX;
          HEAP32[idx + 4] = t.clientY;
          HEAP32[idx + 5] = t.pageX;
          HEAP32[idx + 6] = t.pageY;
          HEAP32[idx + 7] = t.isChanged;
          HEAP32[idx + 8] = t.onTarget;
          HEAP32[idx + 9] = t.clientX - targetRect.left;
          HEAP32[idx + 10] = t.clientY - targetRect.top;
  
          idx += 13;
  
          if (++numTouches > 31) {
            break;
          }
        }
        HEAP32[(((touchEvent)+(8))>>2)] = numTouches;
  
        if (getWasmTableEntry(callbackfunc)(eventTypeId, touchEvent, userData)) e.preventDefault();
      };
  
      var eventHandler = {
        target,
        allowsDeferredCalls: eventTypeString == 'touchstart' || eventTypeString == 'touchend',
        eventTypeString,
        callbackfunc,
        handlerFunc: touchEventHandlerFunc,
        useCapture
      };
      return JSEvents.registerOrRemoveHandler(eventHandler);
    };
  var _emscripten_set_touchcancel_callback_on_thread = (target, userData, useCapture, callbackfunc, targetThread) =>
      registerTouchEventCallback(target, userData, useCapture, callbackfunc, 25, "touchcancel", targetThread);

  var _emscripten_set_touchend_callback_on_thread = (target, userData, useCapture, callbackfunc, targetThread) =>
      registerTouchEventCallback(target, userData, useCapture, callbackfunc, 23, "touchend", targetThread);

  var _emscripten_set_touchmove_callback_on_thread = (target, userData, useCapture, callbackfunc, targetThread) =>
      registerTouchEventCallback(target, userData, useCapture, callbackfunc, 24, "touchmove", targetThread);

  var _emscripten_set_touchstart_callback_on_thread = (target, userData, useCapture, callbackfunc, targetThread) =>
      registerTouchEventCallback(target, userData, useCapture, callbackfunc, 22, "touchstart", targetThread);

  
  
  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');
      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_WEBGL_multi_draw = (ctx) => {
      // Closure is expected to be allowed to minify the '.multiDrawWebgl' property, so not accessing it quoted.
      return !!(ctx.multiDrawWebgl = ctx.getExtension('WEBGL_multi_draw'));
    };
  
  var getEmscriptenSupportedExtensions = function(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_disjoint_timer_query_webgl2',
        'EXT_texture_norm16',
        'WEBGL_clip_cull_distance',
        // WebGL 1 and WebGL 2 extensions
        'EXT_color_buffer_half_float',
        'EXT_float_blend',
        'EXT_texture_compression_bptc',
        'EXT_texture_compression_rgtc',
        'EXT_texture_filter_anisotropic',
        'KHR_parallel_shader_compile',
        'OES_texture_float_linear',
        'WEBGL_compressed_texture_s3tc',
        'WEBGL_compressed_texture_s3tc_srgb',
        'WEBGL_debug_renderer_info',
        'WEBGL_debug_shaders',
        'WEBGL_lose_context',
        'WEBGL_multi_draw',
      ];
      // .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:[],
  mappedBuffers:{
  },
  programs:[],
  framebuffers:[],
  renderbuffers:[],
  textures:[],
  shaders:[],
  vaos:[],
  contexts:[],
  offscreenCanvases:{
  },
  queries:[],
  samplers:[],
  transformFeedbacks:[],
  syncs:[],
  byteSizeByTypeRoot:5120,
  byteSizeByType:[1,1,2,2,4,4,4,2,3,4,8],
  stringCache:{
  },
  stringiCache:{
  },
  unpackAlignment:4,
  recordError:function 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;
      },
  MAX_TEMP_BUFFER_SIZE:2097152,
  numTempVertexBuffersPerSize:64,
  log2ceilLookup:(i) => 32 - Math.clz32(i === 0 ? 0 : i - 1),
  generateTempBuffers:(quads, context) => {
        var largestIndex = GL.log2ceilLookup(GL.MAX_TEMP_BUFFER_SIZE);
        context.tempVertexBufferCounters1 = [];
        context.tempVertexBufferCounters2 = [];
        context.tempVertexBufferCounters1.length = context.tempVertexBufferCounters2.length = largestIndex+1;
        context.tempVertexBuffers1 = [];
        context.tempVertexBuffers2 = [];
        context.tempVertexBuffers1.length = context.tempVertexBuffers2.length = largestIndex+1;
        context.tempIndexBuffers = [];
        context.tempIndexBuffers.length = largestIndex+1;
        for (var i = 0; i <= largestIndex; ++i) {
          context.tempIndexBuffers[i] = null; // Created on-demand
          context.tempVertexBufferCounters1[i] = context.tempVertexBufferCounters2[i] = 0;
          var ringbufferLength = GL.numTempVertexBuffersPerSize;
          context.tempVertexBuffers1[i] = [];
          context.tempVertexBuffers2[i] = [];
          var ringbuffer1 = context.tempVertexBuffers1[i];
          var ringbuffer2 = context.tempVertexBuffers2[i];
          ringbuffer1.length = ringbuffer2.length = ringbufferLength;
          for (var j = 0; j < ringbufferLength; ++j) {
            ringbuffer1[j] = ringbuffer2[j] = null; // Created on-demand
          }
        }
  
        if (quads) {
          // GL_QUAD indexes can be precalculated
          context.tempQuadIndexBuffer = GLctx.createBuffer();
          context.GLctx.bindBuffer(0x8893 /*GL_ELEMENT_ARRAY_BUFFER*/, context.tempQuadIndexBuffer);
          var numIndexes = GL.MAX_TEMP_BUFFER_SIZE >> 1;
          var quadIndexes = new Uint16Array(numIndexes);
          var i = 0, v = 0;
          while (1) {
            quadIndexes[i++] = v;
            if (i >= numIndexes) break;
            quadIndexes[i++] = v+1;
            if (i >= numIndexes) break;
            quadIndexes[i++] = v+2;
            if (i >= numIndexes) break;
            quadIndexes[i++] = v;
            if (i >= numIndexes) break;
            quadIndexes[i++] = v+2;
            if (i >= numIndexes) break;
            quadIndexes[i++] = v+3;
            if (i >= numIndexes) break;
            v += 4;
          }
          context.GLctx.bufferData(0x8893 /*GL_ELEMENT_ARRAY_BUFFER*/, quadIndexes, 0x88E4 /*GL_STATIC_DRAW*/);
          context.GLctx.bindBuffer(0x8893 /*GL_ELEMENT_ARRAY_BUFFER*/, null);
        }
      },
  getTempVertexBuffer:function getTempVertexBuffer(sizeBytes) {
        var idx = GL.log2ceilLookup(sizeBytes);
        var ringbuffer = GL.currentContext.tempVertexBuffers1[idx];
        var nextFreeBufferIndex = GL.currentContext.tempVertexBufferCounters1[idx];
        GL.currentContext.tempVertexBufferCounters1[idx] = (GL.currentContext.tempVertexBufferCounters1[idx]+1) & (GL.numTempVertexBuffersPerSize-1);
        var vbo = ringbuffer[nextFreeBufferIndex];
        if (vbo) {
          return vbo;
        }
        var prevVBO = GLctx.getParameter(0x8894 /*GL_ARRAY_BUFFER_BINDING*/);
        ringbuffer[nextFreeBufferIndex] = GLctx.createBuffer();
        GLctx.bindBuffer(0x8892 /*GL_ARRAY_BUFFER*/, ringbuffer[nextFreeBufferIndex]);
        GLctx.bufferData(0x8892 /*GL_ARRAY_BUFFER*/, 1 << idx, 0x88E8 /*GL_DYNAMIC_DRAW*/);
        GLctx.bindBuffer(0x8892 /*GL_ARRAY_BUFFER*/, prevVBO);
        return ringbuffer[nextFreeBufferIndex];
      },
  getTempIndexBuffer:function getTempIndexBuffer(sizeBytes) {
        var idx = GL.log2ceilLookup(sizeBytes);
        var ibo = GL.currentContext.tempIndexBuffers[idx];
        if (ibo) {
          return ibo;
        }
        var prevIBO = GLctx.getParameter(0x8895 /*ELEMENT_ARRAY_BUFFER_BINDING*/);
        GL.currentContext.tempIndexBuffers[idx] = GLctx.createBuffer();
        GLctx.bindBuffer(0x8893 /*GL_ELEMENT_ARRAY_BUFFER*/, GL.currentContext.tempIndexBuffers[idx]);
        GLctx.bufferData(0x8893 /*GL_ELEMENT_ARRAY_BUFFER*/, 1 << idx, 0x88E8 /*GL_DYNAMIC_DRAW*/);
        GLctx.bindBuffer(0x8893 /*GL_ELEMENT_ARRAY_BUFFER*/, prevIBO);
        return GL.currentContext.tempIndexBuffers[idx];
      },
  newRenderingFrameStarted:function newRenderingFrameStarted() {
        if (!GL.currentContext) {
          return;
        }
        var vb = GL.currentContext.tempVertexBuffers1;
        GL.currentContext.tempVertexBuffers1 = GL.currentContext.tempVertexBuffers2;
        GL.currentContext.tempVertexBuffers2 = vb;
        vb = GL.currentContext.tempVertexBufferCounters1;
        GL.currentContext.tempVertexBufferCounters1 = GL.currentContext.tempVertexBufferCounters2;
        GL.currentContext.tempVertexBufferCounters2 = vb;
        var largestIndex = GL.log2ceilLookup(GL.MAX_TEMP_BUFFER_SIZE);
        for (var i = 0; i <= largestIndex; ++i) {
          GL.currentContext.tempVertexBufferCounters1[i] = 0;
        }
      },
  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;
      },
  calcBufLength:function calcBufLength(size, type, stride, count) {
        if (stride > 0) {
          return count * stride;  // XXXvlad this is not exactly correct I don't think
        }
        var typeSize = GL.byteSizeByType[type - GL.byteSizeByTypeRoot];
        return size * typeSize * count;
      },
  usedTempBuffers:[],
  preDrawHandleClientVertexAttribBindings:function preDrawHandleClientVertexAttribBindings(count) {
        GL.resetBufferBinding = false;
  
        // TODO: initial pass to detect ranges we need to upload, might not need
        // an upload per attrib
        for (var i = 0; i < GL.currentContext.maxVertexAttribs; ++i) {
          var cb = GL.currentContext.clientBuffers[i];
          if (!cb.clientside || !cb.enabled) continue;
  
          GL.resetBufferBinding = true;
  
          var size = GL.calcBufLength(cb.size, cb.type, cb.stride, count);
          var buf = GL.getTempVertexBuffer(size);
          GLctx.bindBuffer(0x8892 /*GL_ARRAY_BUFFER*/, buf);
          GLctx.bufferSubData(0x8892 /*GL_ARRAY_BUFFER*/,
                                   0,
                                   HEAPU8.subarray(cb.ptr, cb.ptr + size));
          cb.vertexAttribPointerAdaptor.call(GLctx, i, cb.size, cb.type, cb.normalized, cb.stride, 0);
        }
      },
  postDrawHandleClientVertexAttribBindings:function postDrawHandleClientVertexAttribBindings() {
        if (GL.resetBufferBinding) {
          GLctx.bindBuffer(0x8892 /*GL_ARRAY_BUFFER*/, GL.buffers[GLctx.currentArrayBufferBinding]);
        }
      },
  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);
        }
  
        context.maxVertexAttribs = context.GLctx.getParameter(0x8869 /*GL_MAX_VERTEX_ATTRIBS*/);
        context.clientBuffers = [];
        for (var i = 0; i < context.maxVertexAttribs; i++) {
          context.clientBuffers[i] = {
            enabled: false,
            clientside: false,
            size: 0,
            type: 0,
            normalized: 0,
            stride: 0,
            ptr: 0,
            vertexAttribPointerAdaptor: null,
          };
        }
  
        GL.generateTempBuffers(false, 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 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");
        }
  
        webgl_enable_WEBGL_multi_draw(GLctx);
  
        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 registerWebGlEventCallback = (target, userData, useCapture, callbackfunc, eventTypeId, eventTypeString, targetThread) => {
  
      var webGlEventHandlerFunc = (e = event) => {
        if (getWasmTableEntry(callbackfunc)(eventTypeId, 0, userData)) e.preventDefault();
      };
  
      var eventHandler = {
        target: findEventTarget(target),
        eventTypeString,
        callbackfunc,
        handlerFunc: webGlEventHandlerFunc,
        useCapture
      };
      JSEvents.registerOrRemoveHandler(eventHandler);
    };
  
  var _emscripten_set_webglcontextlost_callback_on_thread = (target, userData, useCapture, callbackfunc, targetThread) => {
      registerWebGlEventCallback(target, userData, useCapture, callbackfunc, 31, "webglcontextlost", targetThread);
      return 0;
    };

  
  var _emscripten_set_webglcontextrestored_callback_on_thread = (target, userData, useCapture, callbackfunc, targetThread) => {
      registerWebGlEventCallback(target, userData, useCapture, callbackfunc, 32, "webglcontextrestored", targetThread);
      return 0;
    };

  
  
  
  
  
  var registerWheelEventCallback = (target, userData, useCapture, callbackfunc, eventTypeId, eventTypeString, targetThread) => {
      if (!JSEvents.wheelEvent) JSEvents.wheelEvent = _malloc(104);
  
      // The DOM Level 3 events spec event 'wheel'
      var wheelHandlerFunc = (e = event) => {
        var wheelEvent = JSEvents.wheelEvent;
        fillMouseEventData(wheelEvent, e, target);
        HEAPF64[(((wheelEvent)+(72))>>3)] = e["deltaX"];
        HEAPF64[(((wheelEvent)+(80))>>3)] = e["deltaY"];
        HEAPF64[(((wheelEvent)+(88))>>3)] = e["deltaZ"];
        HEAP32[(((wheelEvent)+(96))>>2)] = e["deltaMode"];
        if (getWasmTableEntry(callbackfunc)(eventTypeId, wheelEvent, userData)) e.preventDefault();
      };
  
      var eventHandler = {
        target,
        allowsDeferredCalls: true,
        eventTypeString,
        callbackfunc,
        handlerFunc: wheelHandlerFunc,
        useCapture
      };
      return JSEvents.registerOrRemoveHandler(eventHandler);
    };
  
  var _emscripten_set_wheel_callback_on_thread = (target, userData, useCapture, callbackfunc, targetThread) => {
      target = findEventTarget(target);
      if (!target) return -4;
      if (typeof target.onwheel != 'undefined') {
        return registerWheelEventCallback(target, userData, useCapture, callbackfunc, 9, "wheel", targetThread);
      } else {
        return -1;
      }
    };

  
  
  var emscripten_webgl_power_preferences = ['default', 'low-power', 'high-performance'];
  
  
  
  /** @suppress {duplicate } */
  var _emscripten_webgl_do_create_context = (target, attributes) => {
      assert(attributes);
      var a = attributes >> 2;
      var powerPreference = HEAP32[a + (24>>2)];
      var contextAttributes = {
        'alpha': !!HEAP32[a + (0>>2)],
        'depth': !!HEAP32[a + (4>>2)],
        'stencil': !!HEAP32[a + (8>>2)],
        'antialias': !!HEAP32[a + (12>>2)],
        'premultipliedAlpha': !!HEAP32[a + (16>>2)],
        'preserveDrawingBuffer': !!HEAP32[a + (20>>2)],
        'powerPreference': emscripten_webgl_power_preferences[powerPreference],
        'failIfMajorPerformanceCaveat': !!HEAP32[a + (28>>2)],
        // The following are not predefined WebGL context attributes in the WebGL specification, so the property names can be minified by Closure.
        majorVersion: HEAP32[a + (32>>2)],
        minorVersion: HEAP32[a + (36>>2)],
        enableExtensionsByDefault: HEAP32[a + (40>>2)],
        explicitSwapControl: HEAP32[a + (44>>2)],
        proxyContextToMainThread: HEAP32[a + (48>>2)],
        renderViaOffscreenBackBuffer: HEAP32[a + (52>>2)]
      };
  
      var canvas = findCanvasEventTarget(target);
  
      if (!canvas) {
        return 0;
      }
  
      if (contextAttributes.explicitSwapControl) {
        return 0;
      }
  
      var contextHandle = GL.createContext(canvas, contextAttributes);
      return contextHandle;
    };
  var _emscripten_webgl_create_context = _emscripten_webgl_do_create_context;

  
  
  
  
  
  
  
  var _emscripten_webgl_enable_extension = (contextHandle, extension) => {
      var context = GL.getContext(contextHandle);
      var extString = UTF8ToString(extension);
      if (extString.startsWith('GL_')) extString = extString.substr(3); // Allow enabling extensions both with "GL_" prefix and without.
  
      // Switch-board that pulls in code for all GL extensions, even if those are not used :/
      // Build with -sGL_SUPPORT_SIMPLE_ENABLE_EXTENSIONS=0 to avoid this.
  
      // Obtain function entry points to WebGL 1 extension related functions.
      if (extString == 'ANGLE_instanced_arrays') webgl_enable_ANGLE_instanced_arrays(GLctx);
      if (extString == 'OES_vertex_array_object') webgl_enable_OES_vertex_array_object(GLctx);
      if (extString == 'WEBGL_draw_buffers') webgl_enable_WEBGL_draw_buffers(GLctx);
  
      if (extString == 'WEBGL_draw_instanced_base_vertex_base_instance') webgl_enable_WEBGL_draw_instanced_base_vertex_base_instance(GLctx);
      if (extString == 'WEBGL_multi_draw_instanced_base_vertex_base_instance') webgl_enable_WEBGL_multi_draw_instanced_base_vertex_base_instance(GLctx);
  
      if (extString == 'WEBGL_multi_draw') webgl_enable_WEBGL_multi_draw(GLctx);
  
      var ext = context.GLctx.getExtension(extString);
      return !!ext;
    };

  var _emscripten_webgl_make_context_current = (contextHandle) => {
      var success = GL.makeContextCurrent(contextHandle);
      return success ? 0 : -5;
    };

  var ENV = {
  };
  
  var getExecutableName = () => {
      return 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++)>>0)] = str.charCodeAt(i);
      }
      // Null-terminate the string
      HEAP8[((buffer)>>0)] = 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;
    };

  
  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;

  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 (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;
  }
  }

  function _glActiveTexture(x0) { GLctx.activeTexture(x0) }

  var _glAttachShader = (program, shader) => {
      GLctx.attachShader(GL.programs[program], GL.shaders[shader]);
    };

  
  var _glBindAttribLocation = (program, index, name) => {
      GLctx.bindAttribLocation(GL.programs[program], index, UTF8ToString(name));
    };

  var _glBindBuffer = (target, buffer) => {
      if (target == 0x8892 /*GL_ARRAY_BUFFER*/) {
        GLctx.currentArrayBufferBinding = buffer;
      } else if (target == 0x8893 /*GL_ELEMENT_ARRAY_BUFFER*/) {
        GLctx.currentElementArrayBufferBinding = 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 _glBindTexture = (target, texture) => {
      GLctx.bindTexture(target, GL.textures[texture]);
    };

  function _glBlendFuncSeparate(x0, x1, x2, x3) { GLctx.blendFuncSeparate(x0, x1, x2, x3) }

  var _glBufferData = (target, size, data, usage) => {
  
      if (GL.currentContext.version >= 2) {
        // WebGL 2 provides new garbage-free entry points to call to WebGL. Use
        // those always when possible.  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);
        }
      } else {
        // 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);
      }
    };

  function _glClear(x0) { GLctx.clear(x0) }

  function _glClearColor(x0, x1, x2, x3) { GLctx.clearColor(x0, x1, x2, x3) }

  function _glClearDepthf(x0) { GLctx.clearDepth(x0) }

  var _glColorMask = (red, green, blue, alpha) => {
      GLctx.colorMask(!!red, !!green, !!blue, !!alpha);
    };

  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;
    };

  function _glCullFace(x0) { GLctx.cullFace(x0) }

  var _glDeleteBuffers = (n, buffers) => {
      for (var i = 0; i < n; i++) {
        var id = HEAP32[(((buffers)+(i*4))>>2)];
        var buffer = GL.buffers[id];
  
        // From spec: "glDeleteBuffers silently ignores 0's and names that do not
        // correspond to existing buffer objects."
        if (!buffer) continue;
  
        GLctx.deleteBuffer(buffer);
        buffer.name = 0;
        GL.buffers[id] = null;
  
        if (id == GLctx.currentArrayBufferBinding) GLctx.currentArrayBufferBinding = 0;
        if (id == GLctx.currentElementArrayBufferBinding) GLctx.currentElementArrayBufferBinding = 0;
        if (id == GLctx.currentPixelPackBufferBinding) GLctx.currentPixelPackBufferBinding = 0;
        if (id == GLctx.currentPixelUnpackBufferBinding) GLctx.currentPixelUnpackBufferBinding = 0;
      }
    };

  var _glDeleteProgram = (id) => {
      if (!id) return;
      var program = GL.programs[id];
      if (!program) {
        // glDeleteProgram actually signals an error when deleting a nonexisting
        // object, unlike some other GL delete functions.
        GL.recordError(0x501 /* GL_INVALID_VALUE */);
        return;
      }
      GLctx.deleteProgram(program);
      program.name = 0;
      GL.programs[id] = null;
    };

  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 _glDeleteTextures = (n, textures) => {
      for (var i = 0; i < n; i++) {
        var id = HEAP32[(((textures)+(i*4))>>2)];
        var texture = GL.textures[id];
        // GL spec: "glDeleteTextures silently ignores 0s and names that do not
        // correspond to existing textures".
        if (!texture) continue;
        GLctx.deleteTexture(texture);
        texture.name = 0;
        GL.textures[id] = null;
      }
    };

  function _glDisable(x0) { GLctx.disable(x0) }

  var _glDisableVertexAttribArray = (index) => {
      var cb = GL.currentContext.clientBuffers[index];
      cb.enabled = false;
      GLctx.disableVertexAttribArray(index);
    };

  var _glDrawArrays = (mode, first, count) => {
      // bind any client-side buffers
      GL.preDrawHandleClientVertexAttribBindings(first + count);
  
      GLctx.drawArrays(mode, first, count);
  
      GL.postDrawHandleClientVertexAttribBindings();
    };

  function _glEnable(x0) { GLctx.enable(x0) }

  var _glEnableVertexAttribArray = (index) => {
      var cb = GL.currentContext.clientBuffers[index];
      cb.enabled = true;
      GLctx.enableVertexAttribArray(index);
    };

  function _glFinish() { GLctx.finish() }

  function _glFrontFace(x0) { GLctx.frontFace(x0) }

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

  
  var _glGenTextures = (n, textures) => {
      __glGenObject(n, textures, 'createTexture', GL.textures
        );
    };

  function _glGenerateMipmap(x0) { GLctx.generateMipmap(x0) }

  var _glGetError = () => {
      var error = GLctx.getError() || GL.lastError;
      GL.lastError = 0/*GL_NO_ERROR*/;
      return error;
    };

  var _glGetProgramInfoLog = (program, maxLength, length, infoLog) => {
      var log = GLctx.getProgramInfoLog(GL.programs[program]);
      if (log === null) log = '(unknown error)';
      var numBytesWrittenExclNull = (maxLength > 0 && infoLog) ? stringToUTF8(log, infoLog, maxLength) : 0;
      if (length) HEAP32[((length)>>2)] = numBytesWrittenExclNull;
    };

  var _glGetProgramiv = (program, 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 (program >= GL.counter) {
        GL.recordError(0x501 /* GL_INVALID_VALUE */);
        return;
      }
  
      program = GL.programs[program];
  
      if (pname == 0x8B84) { // GL_INFO_LOG_LENGTH
        var log = GLctx.getProgramInfoLog(program);
        if (log === null) log = '(unknown error)';
        HEAP32[((p)>>2)] = log.length + 1;
      } else if (pname == 0x8B87 /* GL_ACTIVE_UNIFORM_MAX_LENGTH */) {
        if (!program.maxUniformLength) {
          for (var i = 0; i < GLctx.getProgramParameter(program, 0x8B86/*GL_ACTIVE_UNIFORMS*/); ++i) {
            program.maxUniformLength = Math.max(program.maxUniformLength, GLctx.getActiveUniform(program, i).name.length+1);
          }
        }
        HEAP32[((p)>>2)] = program.maxUniformLength;
      } else if (pname == 0x8B8A /* GL_ACTIVE_ATTRIBUTE_MAX_LENGTH */) {
        if (!program.maxAttributeLength) {
          for (var i = 0; i < GLctx.getProgramParameter(program, 0x8B89/*GL_ACTIVE_ATTRIBUTES*/); ++i) {
            program.maxAttributeLength = Math.max(program.maxAttributeLength, GLctx.getActiveAttrib(program, i).name.length+1);
          }
        }
        HEAP32[((p)>>2)] = program.maxAttributeLength;
      } else if (pname == 0x8A35 /* GL_ACTIVE_UNIFORM_BLOCK_MAX_NAME_LENGTH */) {
        if (!program.maxUniformBlockNameLength) {
          for (var i = 0; i < GLctx.getProgramParameter(program, 0x8A36/*GL_ACTIVE_UNIFORM_BLOCKS*/); ++i) {
            program.maxUniformBlockNameLength = Math.max(program.maxUniformBlockNameLength, GLctx.getActiveUniformBlockName(program, i).length+1);
          }
        }
        HEAP32[((p)>>2)] = program.maxUniformBlockNameLength;
      } else {
        HEAP32[((p)>>2)] = GLctx.getProgramParameter(program, pname);
      }
    };

  
  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 = {};
  
        for (i = 0; i < GLctx.getProgramParameter(program, 0x8B86/*GL_ACTIVE_UNIFORMS*/); ++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 _glPixelStorei = (pname, param) => {
      if (pname == 0xCF5 /* GL_UNPACK_ALIGNMENT */) {
        GL.unpackAlignment = param;
      }
      GLctx.pixelStorei(pname, param);
    };

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

  function _glStencilFunc(x0, x1, x2) { GLctx.stencilFunc(x0, x1, x2) }

  function _glStencilMask(x0) { GLctx.stencilMask(x0) }

  function _glStencilOp(x0, x1, x2) { GLctx.stencilOp(x0, x1, x2) }

  function _glStencilOpSeparate(x0, x1, x2, x3) { GLctx.stencilOpSeparate(x0, x1, x2, x3) }

  var computeUnpackAlignedImageSize = (width, height, sizePerPixel, alignment) => {
      function roundedToNextMultipleOf(x, y) {
        return (x + y - 1) & -y;
      }
      var plainRowSize = width * sizePerPixel;
      var alignedRowSize = roundedToNextMultipleOf(plainRowSize, alignment);
      return height * alignedRowSize;
    };
  
  var colorChannelsInGlTextureFormat = (format) => {
      // Micro-optimizations for size: map format to size by subtracting smallest
      // enum value (0x1902) from all values first.  Also omit the most common
      // size value (1) from the list, which is assumed by formats not on the
      // list.
      var colorChannels = {
        // 0x1902 /* GL_DEPTH_COMPONENT */ - 0x1902: 1,
        // 0x1906 /* GL_ALPHA */ - 0x1902: 1,
        5: 3,
        6: 4,
        // 0x1909 /* GL_LUMINANCE */ - 0x1902: 1,
        8: 2,
        29502: 3,
        29504: 4,
        // 0x1903 /* GL_RED */ - 0x1902: 1,
        26917: 2,
        26918: 2,
        // 0x8D94 /* GL_RED_INTEGER */ - 0x1902: 1,
        29846: 3,
        29847: 4
      };
      return colorChannels[format - 0x1902]||1;
    };
  
  var heapObjectForWebGLType = (type) => {
      // Micro-optimization for size: Subtract lowest GL enum number (0x1400/* GL_BYTE */) from type to compare
      // smaller values for the heap, for shorter generated code size.
      // Also the type HEAPU16 is not tested for explicitly, but any unrecognized type will return out HEAPU16.
      // (since most types are HEAPU16)
      type -= 0x1400;
      if (type == 0) return HEAP8;
  
      if (type == 1) return HEAPU8;
  
      if (type == 2) return HEAP16;
  
      if (type == 4) return HEAP32;
  
      if (type == 6) return HEAPF32;
  
      if (type == 5
        || type == 28922
        || type == 28520
        || type == 30779
        || type == 30782
        )
        return HEAPU32;
  
      return HEAPU16;
    };
  
  var heapAccessShiftForWebGLHeap = (heap) => 31 - Math.clz32(heap.BYTES_PER_ELEMENT);
  
  var emscriptenWebGLGetTexPixelData = (type, format, width, height, pixels, internalFormat) => {
      var heap = heapObjectForWebGLType(type);
      var shift = heapAccessShiftForWebGLHeap(heap);
      var byteSize = 1<<shift;
      var sizePerPixel = colorChannelsInGlTextureFormat(format) * byteSize;
      var bytes = computeUnpackAlignedImageSize(width, height, sizePerPixel, GL.unpackAlignment);
      return heap.subarray(pixels >> shift, pixels + bytes >> shift);
    };
  
  
  
  var _glTexImage2D = (target, level, internalFormat, width, height, border, format, type, pixels) => {
      if (GL.currentContext.version >= 2) {
        // WebGL 2 provides new garbage-free entry points to call to WebGL. Use
        // those always when possible.
        if (GLctx.currentPixelUnpackBufferBinding) {
          GLctx.texImage2D(target, level, internalFormat, width, height, border, format, type, pixels);
        } else if (pixels) {
          var heap = heapObjectForWebGLType(type);
          GLctx.texImage2D(target, level, internalFormat, width, height, border, format, type, heap, pixels >> heapAccessShiftForWebGLHeap(heap));
        } else {
          GLctx.texImage2D(target, level, internalFormat, width, height, border, format, type, null);
        }
        return;
      }
      GLctx.texImage2D(target, level, internalFormat, width, height, border, format, type, pixels ? emscriptenWebGLGetTexPixelData(type, format, width, height, pixels, internalFormat) : null);
    };

  function _glTexParameteri(x0, x1, x2) { GLctx.texParameteri(x0, x1, x2) }

  
  
  
  var _glTexSubImage2D = (target, level, xoffset, yoffset, width, height, format, type, pixels) => {
      if (GL.currentContext.version >= 2) {
        // WebGL 2 provides new garbage-free entry points to call to WebGL. Use
        // those always when possible.
        if (GLctx.currentPixelUnpackBufferBinding) {
          GLctx.texSubImage2D(target, level, xoffset, yoffset, width, height, format, type, pixels);
        } else if (pixels) {
          var heap = heapObjectForWebGLType(type);
          GLctx.texSubImage2D(target, level, xoffset, yoffset, width, height, format, type, heap, pixels >> heapAccessShiftForWebGLHeap(heap));
        } else {
          GLctx.texSubImage2D(target, level, xoffset, yoffset, width, height, format, type, null);
        }
        return;
      }
      var pixelData = null;
      if (pixels) pixelData = emscriptenWebGLGetTexPixelData(type, format, width, height, pixels, 0);
      GLctx.texSubImage2D(target, level, xoffset, yoffset, width, height, format, type, pixelData);
    };

  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 _glUniform1i = (location, v0) => {
      GLctx.uniform1i(webglGetUniformLocation(location), v0);
    };

  
  var miniTempWebGLFloatBuffers = [];
  
  var _glUniform2fv = (location, count, value) => {
  
      // WebGL 2 provides new garbage-free entry points to call to WebGL. Use
      // those always when possible.
      if (GL.currentContext.version >= 2) {
        count && GLctx.uniform2fv(webglGetUniformLocation(location), HEAPF32, value>>2, count*2);
        return;
      }
  
      if (count <= 144) {
        // avoid allocation when uploading few enough uniforms
        var view = miniTempWebGLFloatBuffers[2*count-1];
        for (var i = 0; i < 2*count; i += 2) {
          view[i] = HEAPF32[(((value)+(4*i))>>2)];
          view[i+1] = HEAPF32[(((value)+(4*i+4))>>2)];
        }
      } else
      {
        var view = HEAPF32.subarray((value)>>2, (value+count*8)>>2);
      }
      GLctx.uniform2fv(webglGetUniformLocation(location), view);
    };

  
  
  var _glUniform4fv = (location, count, value) => {
  
      // WebGL 2 provides new garbage-free entry points to call to WebGL. Use
      // those always when possible.
      if (GL.currentContext.version >= 2) {
        count && GLctx.uniform4fv(webglGetUniformLocation(location), HEAPF32, value>>2, count*4);
        return;
      }
  
      if (count <= 72) {
        // avoid allocation when uploading few enough uniforms
        var view = miniTempWebGLFloatBuffers[4*count-1];
        // hoist the heap out of the loop for size and for pthreads+growth.
        var heap = HEAPF32;
        value >>= 2;
        for (var i = 0; i < 4 * count; i += 4) {
          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];
        }
      } else
      {
        var view = HEAPF32.subarray((value)>>2, (value+count*16)>>2);
      }
      GLctx.uniform4fv(webglGetUniformLocation(location), 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) => {
      var cb = GL.currentContext.clientBuffers[index];
      if (!GLctx.currentArrayBufferBinding) {
        cb.size = size;
        cb.type = type;
        cb.normalized = normalized;
        cb.stride = stride;
        cb.ptr = ptr;
        cb.clientside = true;
        cb.vertexAttribPointerAdaptor = function(index, size, type, normalized, stride, ptr) {
          this.vertexAttribPointer(index, size, type, normalized, stride, ptr);
        };
        return;
      }
      cb.clientside = false;
      GLctx.vertexAttribPointer(index, size, type, !!normalized, stride, ptr);
    };

  function _glViewport(x0, x1, x2, x3) { GLctx.viewport(x0, x1, x2, x3) }


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


  var allocateUTF8OnStack = stringToUTF8OnStack;

  var FSNode = /** @constructor */ function(parent, name, mode, rdev) {
    if (!parent) {
      parent = this;  // root node sets parent to itself
    }
    this.parent = parent;
    this.mount = parent.mount;
    this.mounted = null;
    this.id = FS.nextInode++;
    this.name = name;
    this.mode = mode;
    this.node_ops = {};
    this.stream_ops = {};
    this.rdev = rdev;
  };
  var readMode = 292/*292*/ | 73/*73*/;
  var writeMode = 146/*146*/;
  Object.defineProperties(FSNode.prototype, {
   read: {
    get: /** @this{FSNode} */function() {
     return (this.mode & readMode) === readMode;
    },
    set: /** @this{FSNode} */function(val) {
     val ? this.mode |= readMode : this.mode &= ~readMode;
    }
   },
   write: {
    get: /** @this{FSNode} */function() {
     return (this.mode & writeMode) === writeMode;
    },
    set: /** @this{FSNode} */function(val) {
     val ? this.mode |= writeMode : this.mode &= ~writeMode;
    }
   },
   isFolder: {
    get: /** @this{FSNode} */function() {
     return FS.isDir(this.mode);
    }
   },
   isDevice: {
    get: /** @this{FSNode} */function() {
     return FS.isChrdev(this.mode);
    }
   }
  });
  FS.FSNode = FSNode;
  FS.createPreloadedFile = FS_createPreloadedFile;
  FS.staticInit();;
var GLctx;;
var miniTempWebGLFloatBuffersStorage = new Float32Array(288);
  for (/**@suppress{duplicate}*/var i = 0; i < 288; ++i) {
    miniTempWebGLFloatBuffers[i] = miniTempWebGLFloatBuffersStorage.subarray(0, i+1);
  };
function checkIncomingModuleAPI() {
  ignoredModuleProp('fetchSettings');
}
var wasmImports = {
  /** @export */
  __assert_fail: ___assert_fail,
  /** @export */
  __syscall_fcntl64: ___syscall_fcntl64,
  /** @export */
  __syscall_fstat64: ___syscall_fstat64,
  /** @export */
  __syscall_ioctl: ___syscall_ioctl,
  /** @export */
  __syscall_lstat64: ___syscall_lstat64,
  /** @export */
  __syscall_mkdirat: ___syscall_mkdirat,
  /** @export */
  __syscall_newfstatat: ___syscall_newfstatat,
  /** @export */
  __syscall_openat: ___syscall_openat,
  /** @export */
  __syscall_stat64: ___syscall_stat64,
  /** @export */
  abort: _abort,
  /** @export */
  emscripten_asm_const_int: _emscripten_asm_const_int,
  /** @export */
  emscripten_get_device_pixel_ratio: _emscripten_get_device_pixel_ratio,
  /** @export */
  emscripten_get_element_css_size: _emscripten_get_element_css_size,
  /** @export */
  emscripten_memcpy_js: _emscripten_memcpy_js,
  /** @export */
  emscripten_request_animation_frame_loop: _emscripten_request_animation_frame_loop,
  /** @export */
  emscripten_resize_heap: _emscripten_resize_heap,
  /** @export */
  emscripten_set_blur_callback_on_thread: _emscripten_set_blur_callback_on_thread,
  /** @export */
  emscripten_set_canvas_element_size: _emscripten_set_canvas_element_size,
  /** @export */
  emscripten_set_focus_callback_on_thread: _emscripten_set_focus_callback_on_thread,
  /** @export */
  emscripten_set_keydown_callback_on_thread: _emscripten_set_keydown_callback_on_thread,
  /** @export */
  emscripten_set_keypress_callback_on_thread: _emscripten_set_keypress_callback_on_thread,
  /** @export */
  emscripten_set_keyup_callback_on_thread: _emscripten_set_keyup_callback_on_thread,
  /** @export */
  emscripten_set_mousedown_callback_on_thread: _emscripten_set_mousedown_callback_on_thread,
  /** @export */
  emscripten_set_mouseenter_callback_on_thread: _emscripten_set_mouseenter_callback_on_thread,
  /** @export */
  emscripten_set_mouseleave_callback_on_thread: _emscripten_set_mouseleave_callback_on_thread,
  /** @export */
  emscripten_set_mousemove_callback_on_thread: _emscripten_set_mousemove_callback_on_thread,
  /** @export */
  emscripten_set_mouseup_callback_on_thread: _emscripten_set_mouseup_callback_on_thread,
  /** @export */
  emscripten_set_pointerlockchange_callback_on_thread: _emscripten_set_pointerlockchange_callback_on_thread,
  /** @export */
  emscripten_set_pointerlockerror_callback_on_thread: _emscripten_set_pointerlockerror_callback_on_thread,
  /** @export */
  emscripten_set_resize_callback_on_thread: _emscripten_set_resize_callback_on_thread,
  /** @export */
  emscripten_set_touchcancel_callback_on_thread: _emscripten_set_touchcancel_callback_on_thread,
  /** @export */
  emscripten_set_touchend_callback_on_thread: _emscripten_set_touchend_callback_on_thread,
  /** @export */
  emscripten_set_touchmove_callback_on_thread: _emscripten_set_touchmove_callback_on_thread,
  /** @export */
  emscripten_set_touchstart_callback_on_thread: _emscripten_set_touchstart_callback_on_thread,
  /** @export */
  emscripten_set_webglcontextlost_callback_on_thread: _emscripten_set_webglcontextlost_callback_on_thread,
  /** @export */
  emscripten_set_webglcontextrestored_callback_on_thread: _emscripten_set_webglcontextrestored_callback_on_thread,
  /** @export */
  emscripten_set_wheel_callback_on_thread: _emscripten_set_wheel_callback_on_thread,
  /** @export */
  emscripten_webgl_create_context: _emscripten_webgl_create_context,
  /** @export */
  emscripten_webgl_enable_extension: _emscripten_webgl_enable_extension,
  /** @export */
  emscripten_webgl_make_context_current: _emscripten_webgl_make_context_current,
  /** @export */
  environ_get: _environ_get,
  /** @export */
  environ_sizes_get: _environ_sizes_get,
  /** @export */
  exit: _exit,
  /** @export */
  fd_close: _fd_close,
  /** @export */
  fd_read: _fd_read,
  /** @export */
  fd_seek: _fd_seek,
  /** @export */
  fd_write: _fd_write,
  /** @export */
  glActiveTexture: _glActiveTexture,
  /** @export */
  glAttachShader: _glAttachShader,
  /** @export */
  glBindAttribLocation: _glBindAttribLocation,
  /** @export */
  glBindBuffer: _glBindBuffer,
  /** @export */
  glBindTexture: _glBindTexture,
  /** @export */
  glBlendFuncSeparate: _glBlendFuncSeparate,
  /** @export */
  glBufferData: _glBufferData,
  /** @export */
  glClear: _glClear,
  /** @export */
  glClearColor: _glClearColor,
  /** @export */
  glClearDepthf: _glClearDepthf,
  /** @export */
  glColorMask: _glColorMask,
  /** @export */
  glCompileShader: _glCompileShader,
  /** @export */
  glCreateProgram: _glCreateProgram,
  /** @export */
  glCreateShader: _glCreateShader,
  /** @export */
  glCullFace: _glCullFace,
  /** @export */
  glDeleteBuffers: _glDeleteBuffers,
  /** @export */
  glDeleteProgram: _glDeleteProgram,
  /** @export */
  glDeleteShader: _glDeleteShader,
  /** @export */
  glDeleteTextures: _glDeleteTextures,
  /** @export */
  glDisable: _glDisable,
  /** @export */
  glDisableVertexAttribArray: _glDisableVertexAttribArray,
  /** @export */
  glDrawArrays: _glDrawArrays,
  /** @export */
  glEnable: _glEnable,
  /** @export */
  glEnableVertexAttribArray: _glEnableVertexAttribArray,
  /** @export */
  glFinish: _glFinish,
  /** @export */
  glFrontFace: _glFrontFace,
  /** @export */
  glGenBuffers: _glGenBuffers,
  /** @export */
  glGenTextures: _glGenTextures,
  /** @export */
  glGenerateMipmap: _glGenerateMipmap,
  /** @export */
  glGetError: _glGetError,
  /** @export */
  glGetProgramInfoLog: _glGetProgramInfoLog,
  /** @export */
  glGetProgramiv: _glGetProgramiv,
  /** @export */
  glGetShaderInfoLog: _glGetShaderInfoLog,
  /** @export */
  glGetShaderiv: _glGetShaderiv,
  /** @export */
  glGetUniformLocation: _glGetUniformLocation,
  /** @export */
  glLinkProgram: _glLinkProgram,
  /** @export */
  glPixelStorei: _glPixelStorei,
  /** @export */
  glShaderSource: _glShaderSource,
  /** @export */
  glStencilFunc: _glStencilFunc,
  /** @export */
  glStencilMask: _glStencilMask,
  /** @export */
  glStencilOp: _glStencilOp,
  /** @export */
  glStencilOpSeparate: _glStencilOpSeparate,
  /** @export */
  glTexImage2D: _glTexImage2D,
  /** @export */
  glTexParameteri: _glTexParameteri,
  /** @export */
  glTexSubImage2D: _glTexSubImage2D,
  /** @export */
  glUniform1i: _glUniform1i,
  /** @export */
  glUniform2fv: _glUniform2fv,
  /** @export */
  glUniform4fv: _glUniform4fv,
  /** @export */
  glUseProgram: _glUseProgram,
  /** @export */
  glVertexAttribPointer: _glVertexAttribPointer,
  /** @export */
  glViewport: _glViewport,
  /** @export */
  sapp_js_add_beforeunload_listener: sapp_js_add_beforeunload_listener,
  /** @export */
  sapp_js_add_clipboard_listener: sapp_js_add_clipboard_listener,
  /** @export */
  sapp_js_add_dragndrop_listeners: sapp_js_add_dragndrop_listeners,
  /** @export */
  sapp_js_clear_favicon: sapp_js_clear_favicon,
  /** @export */
  sapp_js_dropped_file_size: sapp_js_dropped_file_size,
  /** @export */
  sapp_js_fetch_dropped_file: sapp_js_fetch_dropped_file,
  /** @export */
  sapp_js_init: sapp_js_init,
  /** @export */
  sapp_js_remove_beforeunload_listener: sapp_js_remove_beforeunload_listener,
  /** @export */
  sapp_js_remove_clipboard_listener: sapp_js_remove_clipboard_listener,
  /** @export */
  sapp_js_remove_dragndrop_listeners: sapp_js_remove_dragndrop_listeners,
  /** @export */
  sapp_js_request_pointerlock: sapp_js_request_pointerlock,
  /** @export */
  sapp_js_set_favicon: sapp_js_set_favicon
};
var wasmExports = createWasm();
var ___wasm_call_ctors = createExportWrapper('__wasm_call_ctors');
var _malloc = createExportWrapper('malloc');
var __sapp_emsc_onpaste = Module['__sapp_emsc_onpaste'] = createExportWrapper('_sapp_emsc_onpaste');
var __sapp_html5_get_ask_leave_site = Module['__sapp_html5_get_ask_leave_site'] = createExportWrapper('_sapp_html5_get_ask_leave_site');
var __sapp_emsc_begin_drop = Module['__sapp_emsc_begin_drop'] = createExportWrapper('_sapp_emsc_begin_drop');
var __sapp_emsc_drop = Module['__sapp_emsc_drop'] = createExportWrapper('_sapp_emsc_drop');
var __sapp_emsc_end_drop = Module['__sapp_emsc_end_drop'] = createExportWrapper('_sapp_emsc_end_drop');
var __sapp_emsc_invoke_fetch_cb = Module['__sapp_emsc_invoke_fetch_cb'] = createExportWrapper('_sapp_emsc_invoke_fetch_cb');
var _main = Module['_main'] = createExportWrapper('__main_argc_argv');
var _ma_malloc_emscripten = Module['_ma_malloc_emscripten'] = createExportWrapper('ma_malloc_emscripten');
var _ma_free_emscripten = Module['_ma_free_emscripten'] = createExportWrapper('ma_free_emscripten');
var _ma_device_process_pcm_frames_capture__webaudio = Module['_ma_device_process_pcm_frames_capture__webaudio'] = createExportWrapper('ma_device_process_pcm_frames_capture__webaudio');
var _ma_device_process_pcm_frames_playback__webaudio = Module['_ma_device_process_pcm_frames_playback__webaudio'] = createExportWrapper('ma_device_process_pcm_frames_playback__webaudio');
var _fflush = createExportWrapper('fflush');
var _emscripten_builtin_memalign = createExportWrapper('emscripten_builtin_memalign');
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 stackSave = createExportWrapper('stackSave');
var stackRestore = createExportWrapper('stackRestore');
var stackAlloc = createExportWrapper('stackAlloc');
var _emscripten_stack_get_current = () => (_emscripten_stack_get_current = wasmExports['emscripten_stack_get_current'])();
var dynCall_iiiji = Module['dynCall_iiiji'] = createExportWrapper('dynCall_iiiji');
var dynCall_jii = Module['dynCall_jii'] = createExportWrapper('dynCall_jii');
var dynCall_jiji = Module['dynCall_jiji'] = createExportWrapper('dynCall_jiji');
var ___start_em_js = Module['___start_em_js'] = 730732;
var ___stop_em_js = Module['___stop_em_js'] = 736268;

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

var missingLibrarySymbols = [
  'writeI53ToI64',
  'writeI53ToI64Clamped',
  'writeI53ToI64Signaling',
  'writeI53ToU64Clamped',
  'writeI53ToU64Signaling',
  'readI53FromI64',
  'readI53FromU64',
  'convertI32PairToI53',
  'convertU32PairToI53',
  'growMemory',
  'isLeapYear',
  'ydayFromDate',
  'arraySum',
  'addDays',
  'inetPton4',
  'inetNtop4',
  'inetPton6',
  'inetNtop6',
  'readSockaddr',
  'writeSockaddr',
  'getCallstack',
  'emscriptenLog',
  'convertPCtoSourceLocation',
  'runMainThreadEmAsm',
  'listenOnce',
  'autoResumeAudioContext',
  'dynCallLegacy',
  'getDynCaller',
  'dynCall',
  'runtimeKeepalivePush',
  'runtimeKeepalivePop',
  'callUserCallback',
  'maybeExit',
  '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',
  'stringToNewUTF8',
  'writeArrayToMemory',
  'fillDeviceOrientationEventData',
  'registerDeviceOrientationEventCallback',
  'fillDeviceMotionEventData',
  'registerDeviceMotionEventCallback',
  'screenOrientation',
  'fillOrientationChangeEventData',
  'registerOrientationChangeEventCallback',
  'fillFullscreenChangeEventData',
  'registerFullscreenChangeEventCallback',
  'JSEvents_requestFullscreen',
  'JSEvents_resizeCanvasForFullscreen',
  'registerRestoreOldStyle',
  'hideEverythingExceptGivenElement',
  'restoreHiddenElements',
  'setLetterbox',
  'softFullscreenResizeWebGLRenderTarget',
  'doRequestFullscreen',
  'requestPointerLock',
  'fillVisibilityChangeEventData',
  'registerVisibilityChangeEventCallback',
  'fillGamepadEventData',
  'registerGamepadEventCallback',
  'registerBeforeUnloadEventCallback',
  'fillBatteryEventData',
  'battery',
  'registerBatteryEventCallback',
  'setCanvasElementSize',
  'getCanvasElementSize',
  'demangle',
  'jsStackTrace',
  'stackTrace',
  'checkWasiClock',
  'wasiRightsToMuslOFlags',
  'wasiOFlagsToMuslOFlags',
  'createDyncallWrapper',
  'safeSetTimeout',
  'setImmediateWrapped',
  'clearImmediateWrapped',
  'polyfillSetImmediate',
  'getPromise',
  'makePromise',
  'idsToPromises',
  'makePromiseCallback',
  'ExceptionInfo',
  'findMatchingCatch',
  'Browser_asyncPrepareDataCounter',
  'setMainLoop',
  'getSocketFromFD',
  'getSocketAddress',
  'FS_unlink',
  'FS_mkdirTree',
  '_setNetworkCallback',
  'emscriptenWebGLGet',
  'emscriptenWebGLGetUniform',
  'emscriptenWebGLGetVertexAttrib',
  '__glGetActiveAttribOrUniform',
  'emscriptenWebGLGetBufferBinding',
  'emscriptenWebGLValidateMapBufferTarget',
  'writeGLArray',
  'runAndAbortIfError',
  'SDL_unicode',
  'SDL_ttfContext',
  'SDL_audio',
  'emscriptenWebGLGetIndexed',
  'ALLOC_NORMAL',
  'ALLOC_STACK',
  'allocate',
  'writeStringToMemory',
  'writeAsciiToMemory',
  'setErrNo',
];
missingLibrarySymbols.forEach(missingLibrarySymbol)

var unexportedSymbols = [
  'run',
  'addOnPreRun',
  'addOnInit',
  'addOnPreMain',
  'addOnExit',
  'addOnPostRun',
  'addRunDependency',
  'removeRunDependency',
  'FS_createFolder',
  'FS_createPath',
  'FS_createLazyFile',
  'FS_createLink',
  'FS_createDevice',
  'FS_readFile',
  'out',
  'err',
  'callMain',
  'abort',
  'wasmMemory',
  'wasmExports',
  'stackAlloc',
  'stackSave',
  'stackRestore',
  'getTempRet0',
  'setTempRet0',
  'writeStackCookie',
  'checkStackCookie',
  'convertI32PairToI53Checked',
  'ptrToString',
  'zeroMemory',
  'exitJS',
  'getHeapMax',
  'abortOnCannotGrowMemory',
  'ENV',
  'MONTH_DAYS_REGULAR',
  'MONTH_DAYS_LEAP',
  'MONTH_DAYS_REGULAR_CUMULATIVE',
  'MONTH_DAYS_LEAP_CUMULATIVE',
  'ERRNO_CODES',
  'ERRNO_MESSAGES',
  'DNS',
  'Protocols',
  'Sockets',
  'initRandomFill',
  'randomFill',
  'timers',
  'warnOnce',
  'UNWIND_CACHE',
  'readEmAsmArgsArray',
  'readEmAsmArgs',
  'runEmAsmFunction',
  'jstoi_q',
  'jstoi_s',
  'getExecutableName',
  'handleException',
  'keepRuntimeAlive',
  'asyncLoad',
  'alignMemory',
  'mmapAlloc',
  'wasmTable',
  'noExitRuntime',
  'freeTableIndexes',
  'functionsInTableMap',
  'setValue',
  'getValue',
  'PATH',
  'PATH_FS',
  'UTF8Decoder',
  'UTF8ArrayToString',
  'UTF8ToString',
  'stringToUTF8Array',
  'stringToUTF8',
  'lengthBytesUTF8',
  'intArrayFromString',
  'stringToAscii',
  'UTF16Decoder',
  'stringToUTF8OnStack',
  'JSEvents',
  'registerKeyEventCallback',
  'specialHTMLTargets',
  'maybeCStringToJsString',
  'findEventTarget',
  'findCanvasEventTarget',
  'getBoundingClientRect',
  'fillMouseEventData',
  'registerMouseEventCallback',
  'registerWheelEventCallback',
  'registerUiEventCallback',
  'registerFocusEventCallback',
  'currentFullscreenStrategy',
  'restoreOldWindowedStyle',
  'fillPointerlockChangeEventData',
  'registerPointerlockChangeEventCallback',
  'registerPointerlockErrorEventCallback',
  'registerTouchEventCallback',
  'ExitStatus',
  'getEnvStrings',
  'doReadv',
  'doWritev',
  'promiseMap',
  'uncaughtExceptionCount',
  'exceptionLast',
  'exceptionCaught',
  'Browser',
  'wget',
  'SYSCALLS',
  'preloadPlugins',
  'FS_createPreloadedFile',
  'FS_modeStringToFlags',
  'FS_getMode',
  'FS_stdin_getChar_buffer',
  'FS_stdin_getChar',
  'FS',
  'FS_createDataFile',
  'MEMFS',
  'TTY',
  'PIPEFS',
  'SOCKFS',
  'tempFixedLengthArray',
  'miniTempWebGLFloatBuffers',
  'miniTempWebGLIntBuffers',
  'heapObjectForWebGLType',
  'heapAccessShiftForWebGLHeap',
  'webgl_enable_ANGLE_instanced_arrays',
  'webgl_enable_OES_vertex_array_object',
  'webgl_enable_WEBGL_draw_buffers',
  'webgl_enable_WEBGL_multi_draw',
  'GL',
  'computeUnpackAlignedImageSize',
  'colorChannelsInGlTextureFormat',
  'emscriptenWebGLGetTexPixelData',
  '__glGenObject',
  'webglGetUniformLocation',
  'webglPrepareUniformLocationsBeforeFirstUse',
  'webglGetLeftBracePos',
  'emscripten_webgl_power_preferences',
  'registerWebGlEventCallback',
  'AL',
  'GLUT',
  'EGL',
  'GLEW',
  'IDBStore',
  'SDL',
  'SDL_gfx',
  'webgl_enable_WEBGL_draw_instanced_base_vertex_base_instance',
  'webgl_enable_WEBGL_multi_draw_instanced_base_vertex_base_instance',
  'allocateUTF8',
  'allocateUTF8OnStack',
];
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();

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

    if (shouldRunNow) callMain(args);

    postRun();
  }

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

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(function(name) {
      var info = FS.analyzePath('/dev/' + name);
      if (!info) return;
      var stream = info.object;
      var rdev = stream.rdev;
      var tty = TTY.ttys[rdev];
      if (tty?.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