main.js

// include: shell.js
// The Module object: Our interface to the outside world. We import
// and export values on it. There are various ways Module can be used:
// 1. Not defined. We create it here
// 2. A function parameter, function(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,
    setWindowTitle;

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 = 101900;
  if (numericVersion < 101900) {
    throw new Error('This emscripten-generated code requires node v10.19.19.0 (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) => {
  // See the comment in the `read_` function.
  filename = isFileURI(filename) ? new URL(filename) : nodePath.normalize(filename);
  fs.readFile(filename, function(err, data) {
    if (err) onerror(err);
    else onload(data.buffer);
  });
};

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

  // Without this older versions of node (< v15) will log unhandled rejections
  // but return 0, which is not normally the desired behaviour.  This is
  // not be needed with node v15 and about because it is now the default
  // behaviour:
  // See https://nodejs.org/api/cli.html#cli_unhandled_rejections_mode
  var nodeMajor = process.versions.node.split(".")[0];
  if (nodeMajor < 15) {
    process.on('unhandledRejection', function(reason) { throw reason; });
  }

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

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

} 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_ = function shell_read(f) {
      return read(f);
    };
  }

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

  readAsync = function readAsync(f, onload, onerror) {
    setTimeout(() => onload(readBinary(f)), 0);
  };

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

  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.indexOf('blob:') !== 0) {
    scriptDirectory = scriptDirectory.substr(0, scriptDirectory.replace(/[?#].*/, "").lastIndexOf('/')+1);
  } else {
    scriptDirectory = '';
  }

  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
  }

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

var out = Module['print'] || console.log.bind(console);
var err = Module['printErr'] || console.warn.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 setWindowTitle in JS)');
assert(typeof Module['TOTAL_MEMORY'] == 'undefined', 'Module.TOTAL_MEMORY has been renamed Module.INITIAL_MEMORY');
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 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');
var noExitRuntime = Module['noExitRuntime'] || true;legacyModuleProp('noExitRuntime', 'noExitRuntime');

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;

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

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

// Memory management

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

function updateMemoryViews() {
  var b = wasmMemory.buffer;
  Module['HEAP8'] = HEAP8 = new Int8Array(b);
  Module['HEAP16'] = HEAP16 = new Int16Array(b);
  Module['HEAP32'] = HEAP32 = new Int32Array(b);
  Module['HEAPU8'] = HEAPU8 = new Uint8Array(b);
  Module['HEAPU16'] = HEAPU16 = new Uint16Array(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_init_table.js
// In regular non-RELOCATABLE mode the table is exported
// from the wasm module and this will be assigned once
// the exports are available.
var wasmTable;

// end include: runtime_init_table.js
// include: runtime_stack_check.js
// Initializes the stack cookie. Called at the startup of main and at the startup of each thread in pthreads mode.
function writeStackCookie() {
  var max = _emscripten_stack_get_end();
  assert((max & 3) == 0);
  // If the stack ends at address zero we write our cookies 4 bytes into the
  // stack.  This prevents interference with the (separate) address-zero check
  // below.
  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] = 0x63736d65; /* 'emsc' */
}

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] !== 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;

var runtimeKeepaliveCounter = 0;

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

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++;

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

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

function removeRunDependency(id) {
  runDependencies--;

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

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

/** @param {string|number=} what */
function abort(what) {
  if (Module['onAbort']) {
    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.
function isDataURI(filename) {
  // Prefix of data URIs emitted by SINGLE_FILE and related options.
  return filename.startsWith(dataURIPrefix);
}

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

// end include: URIUtils.js
/** @param {boolean=} fixedasm */
function createExportWrapper(name, fixedasm) {
  return function() {
    var displayName = name;
    var asm = fixedasm;
    if (!fixedasm) {
      asm = Module['asm'];
    }
    assert(runtimeInitialized, 'native function `' + displayName + '` called before runtime initialization');
    if (!asm[name]) {
      assert(asm[name], 'exported native function `' + displayName + '` not found');
    }
    return asm[name].apply(null, arguments);
  };
}

// include: runtime_exceptions.js
// end include: runtime_exceptions.js
var wasmBinaryFile;
  wasmBinaryFile = 'main.wasm';
  if (!isDataURI(wasmBinaryFile)) {
    wasmBinaryFile = locateFile(wasmBinaryFile);
  }

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

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(function(response) {
        if (!response['ok']) {
          throw "failed to load wasm binary file at '" + binaryFile + "'";
        }
        return response['arrayBuffer']();
      }).catch(function () {
          return getBinary(binaryFile);
      });
    }
    else {
      if (readAsync) {
        // fetch is not available or url is file => try XHR (readAsync uses XHR internally)
        return new Promise(function(resolve, reject) {
          readAsync(binaryFile, function(response) { resolve(new Uint8Array(/** @type{!ArrayBuffer} */(response))) }, reject)
        });
      }
    }
  }

  // Otherwise, getBinary should be able to get it synchronously
  return Promise.resolve().then(function() { return getBinary(binaryFile); });
}

function instantiateArrayBuffer(binaryFile, imports, receiver) {
  return getBinaryPromise(binaryFile).then(function(binary) {
    return WebAssembly.instantiate(binary, imports);
  }).then(function (instance) {
    return instance;
  }).then(receiver, function(reason) {
    err('failed to asynchronously prepare wasm: ' + reason);

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

function instantiateAsync(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(function(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);
        });
    });
  } else {
    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) {
    var exports = instance.exports;

    Module['asm'] = exports;

    wasmMemory = Module['asm']['memory'];
    assert(wasmMemory, "memory not found in wasm exports");
    // This assertion doesn't hold when emscripten is run in --post-link
    // mode.
    // TODO(sbc): Read INITIAL_MEMORY out of the wasm file in post-link mode.
    //assert(wasmMemory.buffer.byteLength === 16777216);
    updateMemoryViews();

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

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

    removeRunDependency('wasm-instantiate');

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

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: function() {
        warnOnce('`' + sym + '` is not longer defined by emscripten. ' + msg);
        return undefined;
      }
    });
  }
}

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

function missingLibrarySymbol(sym) {
  if (typeof globalThis !== 'undefined' && !Object.getOwnPropertyDescriptor(globalThis, sym)) {
    Object.defineProperty(globalThis, sym, {
      configurable: true,
      get: function() {
        // 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: function() {
        var msg = "'" + sym + "' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the 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 errors.
  console.error(text);
}

// end include: runtime_debug.js
// === Body ===

function upload(accept_types,callback,callback_data) { globalThis["open_file"] = function(e) { const file_reader = new FileReader(); file_reader.onload = (event) => { const uint8Arr = new Uint8Array(event.target.result); const num_bytes = uint8Arr.length * uint8Arr.BYTES_PER_ELEMENT; const data_ptr = Module["_malloc"](num_bytes); const data_on_heap = new Uint8Array(Module["HEAPU8"].buffer, data_ptr, num_bytes); data_on_heap.set(uint8Arr); Module["ccall"]('upload_file_return', 'number', ['string', 'string', 'number', 'number', 'number', 'number'], [event.target.filename, event.target.mime_type, data_on_heap.byteOffset, uint8Arr.length, callback, callback_data]); Module["_free"](data_ptr); }; file_reader.filename = e.target.files[0].name; file_reader.mime_type = e.target.files[0].type; file_reader.readAsArrayBuffer(e.target.files[0]); }; var file_selector = document.createElement('input'); file_selector.setAttribute('type', 'file'); file_selector.setAttribute('onchange', 'globalThis["open_file"](event)'); file_selector.setAttribute('accept', UTF8ToString(accept_types)); file_selector.click(); }
function download(filename,mime_type,buffer,buffer_size) { var a = document.createElement('a'); a.download = UTF8ToString(filename); a.href = URL.createObjectURL(new Blob([new Uint8Array(Module["HEAPU8"].buffer, buffer, buffer_size)], {type: UTF8ToString(mime_type)})); a.click(); }



// end include: preamble.js

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

  function 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': return HEAP32[((ptr)>>2)];
      case 'float': return HEAPF32[((ptr)>>2)];
      case 'double': return HEAPF64[((ptr)>>3)];
      case '*': return HEAPU32[((ptr)>>2)];
      default: abort('invalid type for getValue: ' + type);
    }
  }

  function ptrToString(ptr) {
      assert(typeof ptr === 'number');
      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': (tempI64 = [value>>>0,(tempDouble=value,(+(Math.abs(tempDouble))) >= 1.0 ? (tempDouble > 0.0 ? ((Math.min((+(Math.floor((tempDouble)/4294967296.0))), 4294967295.0))|0)>>>0 : (~~((+(Math.ceil((tempDouble - +(((~~(tempDouble)))>>>0))/4294967296.0)))))>>>0) : 0)],HEAP32[((ptr)>>2)] = tempI64[0],HEAP32[(((ptr)+(4))>>2)] = tempI64[1]); break;
      case 'float': HEAPF32[((ptr)>>2)] = value; break;
      case 'double': HEAPF64[((ptr)>>3)] = value; break;
      case '*': HEAPU32[((ptr)>>2)] = value; break;
      default: abort('invalid type for setValue: ' + type);
    }
  }

  function warnOnce(text) {
      if (!warnOnce.shown) 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}
     */
  function 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  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}
     */
  function UTF8ToString(ptr, maxBytesToRead) {
      assert(typeof ptr == 'number');
      return ptr ? UTF8ArrayToString(HEAPU8, ptr, maxBytesToRead) : '';
    }
  function ___assert_fail(condition, filename, line, func) {
      abort('Assertion failed: ' + UTF8ToString(condition) + ', at: ' + [filename ? UTF8ToString(filename) : 'unknown filename', line, func ? UTF8ToString(func) : 'unknown function']);
    }

  /** @constructor */
  function ExceptionInfo(excPtr) {
      this.excPtr = excPtr;
      this.ptr = excPtr - 24;
  
      this.set_type = function(type) {
        HEAPU32[(((this.ptr)+(4))>>2)] = type;
      };
  
      this.get_type = function() {
        return HEAPU32[(((this.ptr)+(4))>>2)];
      };
  
      this.set_destructor = function(destructor) {
        HEAPU32[(((this.ptr)+(8))>>2)] = destructor;
      };
  
      this.get_destructor = function() {
        return HEAPU32[(((this.ptr)+(8))>>2)];
      };
  
      this.set_refcount = function(refcount) {
        HEAP32[((this.ptr)>>2)] = refcount;
      };
  
      this.set_caught = function (caught) {
        caught = caught ? 1 : 0;
        HEAP8[(((this.ptr)+(12))>>0)] = caught;
      };
  
      this.get_caught = function () {
        return HEAP8[(((this.ptr)+(12))>>0)] != 0;
      };
  
      this.set_rethrown = function (rethrown) {
        rethrown = rethrown ? 1 : 0;
        HEAP8[(((this.ptr)+(13))>>0)] = rethrown;
      };
  
      this.get_rethrown = function () {
        return HEAP8[(((this.ptr)+(13))>>0)] != 0;
      };
  
      // Initialize native structure fields. Should be called once after allocated.
      this.init = function(type, destructor) {
        this.set_adjusted_ptr(0);
        this.set_type(type);
        this.set_destructor(destructor);
        this.set_refcount(0);
        this.set_caught(false);
        this.set_rethrown(false);
      }
  
      this.add_ref = function() {
        var value = HEAP32[((this.ptr)>>2)];
        HEAP32[((this.ptr)>>2)] = value + 1;
      };
  
      // Returns true if last reference released.
      this.release_ref = function() {
        var prev = HEAP32[((this.ptr)>>2)];
        HEAP32[((this.ptr)>>2)] = prev - 1;
        assert(prev > 0);
        return prev === 1;
      };
  
      this.set_adjusted_ptr = function(adjustedPtr) {
        HEAPU32[(((this.ptr)+(16))>>2)] = adjustedPtr;
      };
  
      this.get_adjusted_ptr = function() {
        return HEAPU32[(((this.ptr)+(16))>>2)];
      };
  
      // Get pointer which is expected to be received by catch clause in C++ code. It may be adjusted
      // when the pointer is casted to some of the exception object base classes (e.g. when virtual
      // inheritance is used). When a pointer is thrown this method should return the thrown pointer
      // itself.
      this.get_exception_ptr = function() {
        // Work around a fastcomp bug, this code is still included for some reason in a build without
        // exceptions support.
        var isPointer = ___cxa_is_pointer_type(this.get_type());
        if (isPointer) {
          return HEAPU32[((this.excPtr)>>2)];
        }
        var adjusted = this.get_adjusted_ptr();
        if (adjusted !== 0) return adjusted;
        return this.excPtr;
      };
    }
  
  var exceptionLast = 0;
  
  var uncaughtExceptionCount = 0;
  function ___cxa_throw(ptr, type, destructor) {
      var info = new ExceptionInfo(ptr);
      // Initialize ExceptionInfo content after it was allocated in __cxa_allocate_exception.
      info.init(type, destructor);
      exceptionLast = ptr;
      uncaughtExceptionCount++;
      assert(false, 'Exception thrown, but exception catching is not enabled. Compile with -sNO_DISABLE_EXCEPTION_CATCHING or -sEXCEPTION_CATCHING_ALLOWED=[..] to catch.');
    }

  function setErrNo(value) {
      HEAP32[((___errno_location())>>2)] = value;
      return value;
    }
  
  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) => {
        return PATH.normalize(l + '/' + r);
      }};
  
  function 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: function(array) { for (var i = 0; i < array.length; i++) array[i] = (Math.random()*256)|0 } };");
    }
  function 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('/');
      }};
  
  
  function lengthBytesUTF8(str) {
      var len = 0;
      for (var i = 0; i < str.length; ++i) {
        // Gotcha: charCodeAt returns a 16-bit word that is a UTF-16 encoded code
        // unit, not a Unicode code point of the character! So decode
        // UTF16->UTF32->UTF8.
        // See http://unicode.org/faq/utf_bom.html#utf16-3
        var 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;
    }
  
  function stringToUTF8Array(str, heap, outIdx, maxBytesToWrite) {
      // 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 TTY = {ttys:[],init:function () {
        // https://github.com/emscripten-core/emscripten/pull/1555
        // if (ENVIRONMENT_IS_NODE) {
        //   // currently, FS.init does not distinguish if process.stdin is a file or TTY
        //   // device, it always assumes it's a TTY device. because of this, we're forcing
        //   // process.stdin to UTF8 encoding to at least make stdin reading compatible
        //   // with text files until FS.init can be refactored.
        //   process.stdin.setEncoding('utf8');
        // }
      },shutdown:function() {
        // https://github.com/emscripten-core/emscripten/pull/1555
        // if (ENVIRONMENT_IS_NODE) {
        //   // inolen: any idea as to why node -e 'process.stdin.read()' wouldn't exit immediately (with process.stdin being a tty)?
        //   // isaacs: because now it's reading from the stream, you've expressed interest in it, so that read() kicks off a _read() which creates a ReadReq operation
        //   // inolen: I thought read() in that case was a synchronous operation that just grabbed some amount of buffered data if it exists?
        //   // isaacs: it is. but it also triggers a _read() call, which calls readStart() on the handle
        //   // isaacs: do process.stdin.pause() and i'd think it'd probably close the pending call
        //   process.stdin.pause();
        // }
      },register:function(dev, ops) {
        TTY.ttys[dev] = { input: [], output: [], ops: ops };
        FS.registerDevice(dev, TTY.stream_ops);
      },stream_ops:{open:function(stream) {
          var tty = TTY.ttys[stream.node.rdev];
          if (!tty) {
            throw new FS.ErrnoError(43);
          }
          stream.tty = tty;
          stream.seekable = false;
        },close:function(stream) {
          // flush any pending line data
          stream.tty.ops.fsync(stream.tty);
        },fsync:function(stream) {
          stream.tty.ops.fsync(stream.tty);
        },read:function(stream, buffer, offset, length, pos /* ignored */) {
          if (!stream.tty || !stream.tty.ops.get_char) {
            throw new FS.ErrnoError(60);
          }
          var bytesRead = 0;
          for (var i = 0; i < length; i++) {
            var result;
            try {
              result = stream.tty.ops.get_char(stream.tty);
            } catch (e) {
              throw new FS.ErrnoError(29);
            }
            if (result === undefined && bytesRead === 0) {
              throw new FS.ErrnoError(6);
            }
            if (result === null || result === undefined) break;
            bytesRead++;
            buffer[offset+i] = result;
          }
          if (bytesRead) {
            stream.node.timestamp = Date.now();
          }
          return bytesRead;
        },write:function(stream, buffer, offset, length, pos) {
          if (!stream.tty || !stream.tty.ops.put_char) {
            throw new FS.ErrnoError(60);
          }
          try {
            for (var i = 0; i < length; i++) {
              stream.tty.ops.put_char(stream.tty, buffer[offset+i]);
            }
          } catch (e) {
            throw new FS.ErrnoError(29);
          }
          if (length) {
            stream.node.timestamp = Date.now();
          }
          return i;
        }},default_tty_ops:{get_char:function(tty) {
          if (!tty.input.length) {
            var result = null;
            if (ENVIRONMENT_IS_NODE) {
              // we will read data by chunks of BUFSIZE
              var BUFSIZE = 256;
              var buf = Buffer.alloc(BUFSIZE);
              var bytesRead = 0;
  
              try {
                bytesRead = fs.readSync(process.stdin.fd, buf, 0, BUFSIZE, -1);
              } catch(e) {
                // Cross-platform differences: on Windows, reading EOF throws an exception, but on other OSes,
                // reading EOF returns 0. Uniformize behavior by treating the EOF exception to return 0.
                if (e.toString().includes('EOF')) bytesRead = 0;
                else throw e;
              }
  
              if (bytesRead > 0) {
                result = buf.slice(0, bytesRead).toString('utf-8');
              } else {
                result = null;
              }
            } else
            if (typeof window != 'undefined' &&
              typeof window.prompt == 'function') {
              // Browser.
              result = window.prompt('Input: ');  // returns null on cancel
              if (result !== null) {
                result += '\n';
              }
            } else if (typeof readline == 'function') {
              // Command line.
              result = readline();
              if (result !== null) {
                result += '\n';
              }
            }
            if (!result) {
              return null;
            }
            tty.input = intArrayFromString(result, true);
          }
          return tty.input.shift();
        },put_char:function(tty, val) {
          if (val === null || val === 10) {
            out(UTF8ArrayToString(tty.output, 0));
            tty.output = [];
          } else {
            if (val != 0) tty.output.push(val); // val == 0 would cut text output off in the middle.
          }
        },fsync:function(tty) {
          if (tty.output && tty.output.length > 0) {
            out(UTF8ArrayToString(tty.output, 0));
            tty.output = [];
          }
        }},default_tty1_ops:{put_char:function(tty, val) {
          if (val === null || val === 10) {
            err(UTF8ArrayToString(tty.output, 0));
            tty.output = [];
          } else {
            if (val != 0) tty.output.push(val);
          }
        },fsync:function(tty) {
          if (tty.output && tty.output.length > 0) {
            err(UTF8ArrayToString(tty.output, 0));
            tty.output = [];
          }
        }}};
  
  
  function zeroMemory(address, size) {
      HEAPU8.fill(0, address, address + size);
      return address;
    }
  
  function alignMemory(size, alignment) {
      assert(alignment, "alignment argument is required");
      return Math.ceil(size / alignment) * alignment;
    }
  function mmapAlloc(size) {
      abort('internal error: mmapAlloc called but `emscripten_builtin_memalign` native symbol not exported');
    }
  var MEMFS = {ops_table:null,mount:function(mount) {
        return MEMFS.createNode(null, '/', 16384 | 511 /* 0777 */, 0);
      },createNode:function(parent, name, mode, dev) {
        if (FS.isBlkdev(mode) || FS.isFIFO(mode)) {
          // no supported
          throw new FS.ErrnoError(63);
        }
        if (!MEMFS.ops_table) {
          MEMFS.ops_table = {
            dir: {
              node: {
                getattr: MEMFS.node_ops.getattr,
                setattr: MEMFS.node_ops.setattr,
                lookup: MEMFS.node_ops.lookup,
                mknod: MEMFS.node_ops.mknod,
                rename: MEMFS.node_ops.rename,
                unlink: MEMFS.node_ops.unlink,
                rmdir: MEMFS.node_ops.rmdir,
                readdir: MEMFS.node_ops.readdir,
                symlink: MEMFS.node_ops.symlink
              },
              stream: {
                llseek: MEMFS.stream_ops.llseek
              }
            },
            file: {
              node: {
                getattr: MEMFS.node_ops.getattr,
                setattr: MEMFS.node_ops.setattr
              },
              stream: {
                llseek: MEMFS.stream_ops.llseek,
                read: MEMFS.stream_ops.read,
                write: MEMFS.stream_ops.write,
                allocate: MEMFS.stream_ops.allocate,
                mmap: MEMFS.stream_ops.mmap,
                msync: MEMFS.stream_ops.msync
              }
            },
            link: {
              node: {
                getattr: MEMFS.node_ops.getattr,
                setattr: MEMFS.node_ops.setattr,
                readlink: MEMFS.node_ops.readlink
              },
              stream: {}
            },
            chrdev: {
              node: {
                getattr: MEMFS.node_ops.getattr,
                setattr: MEMFS.node_ops.setattr
              },
              stream: FS.chrdev_stream_ops
            }
          };
        }
        var node = FS.createNode(parent, name, mode, dev);
        if (FS.isDir(node.mode)) {
          node.node_ops = MEMFS.ops_table.dir.node;
          node.stream_ops = MEMFS.ops_table.dir.stream;
          node.contents = {};
        } else if (FS.isFile(node.mode)) {
          node.node_ops = MEMFS.ops_table.file.node;
          node.stream_ops = MEMFS.ops_table.file.stream;
          node.usedBytes = 0; // The actual number of bytes used in the typed array, as opposed to contents.length which gives the whole capacity.
          // When the byte data of the file is populated, this will point to either a typed array, or a normal JS array. Typed arrays are preferred
          // for performance, and used by default. However, typed arrays are not resizable like normal JS arrays are, so there is a small disk size
          // penalty involved for appending file writes that continuously grow a file similar to std::vector capacity vs used -scheme.
          node.contents = null; 
        } else if (FS.isLink(node.mode)) {
          node.node_ops = MEMFS.ops_table.link.node;
          node.stream_ops = MEMFS.ops_table.link.stream;
        } else if (FS.isChrdev(node.mode)) {
          node.node_ops = MEMFS.ops_table.chrdev.node;
          node.stream_ops = MEMFS.ops_table.chrdev.stream;
        }
        node.timestamp = Date.now();
        // add the new node to the parent
        if (parent) {
          parent.contents[name] = node;
          parent.timestamp = node.timestamp;
        }
        return node;
      },getFileDataAsTypedArray:function(node) {
        if (!node.contents) return new Uint8Array(0);
        if (node.contents.subarray) return node.contents.subarray(0, node.usedBytes); // Make sure to not return excess unused bytes.
        return new Uint8Array(node.contents);
      },expandFileStorage:function(node, newCapacity) {
        var prevCapacity = node.contents ? node.contents.length : 0;
        if (prevCapacity >= newCapacity) return; // No need to expand, the storage was already large enough.
        // Don't expand strictly to the given requested limit if it's only a very small increase, but instead geometrically grow capacity.
        // For small filesizes (<1MB), perform size*2 geometric increase, but for large sizes, do a much more conservative size*1.125 increase to
        // avoid overshooting the allocation cap by a very large margin.
        var CAPACITY_DOUBLING_MAX = 1024 * 1024;
        newCapacity = Math.max(newCapacity, (prevCapacity * (prevCapacity < CAPACITY_DOUBLING_MAX ? 2.0 : 1.125)) >>> 0);
        if (prevCapacity != 0) newCapacity = Math.max(newCapacity, 256); // At minimum allocate 256b for each file when expanding.
        var oldContents = node.contents;
        node.contents = new Uint8Array(newCapacity); // Allocate new storage.
        if (node.usedBytes > 0) node.contents.set(oldContents.subarray(0, node.usedBytes), 0); // Copy old data over to the new storage.
      },resizeFileStorage:function(node, newSize) {
        if (node.usedBytes == newSize) return;
        if (newSize == 0) {
          node.contents = null; // Fully decommit when requesting a resize to zero.
          node.usedBytes = 0;
        } else {
          var oldContents = node.contents;
          node.contents = new Uint8Array(newSize); // Allocate new storage.
          if (oldContents) {
            node.contents.set(oldContents.subarray(0, Math.min(newSize, node.usedBytes))); // Copy old data over to the new storage.
          }
          node.usedBytes = newSize;
        }
      },node_ops:{getattr:function(node) {
          var attr = {};
          // device numbers reuse inode numbers.
          attr.dev = FS.isChrdev(node.mode) ? node.id : 1;
          attr.ino = node.id;
          attr.mode = node.mode;
          attr.nlink = 1;
          attr.uid = 0;
          attr.gid = 0;
          attr.rdev = node.rdev;
          if (FS.isDir(node.mode)) {
            attr.size = 4096;
          } else if (FS.isFile(node.mode)) {
            attr.size = node.usedBytes;
          } else if (FS.isLink(node.mode)) {
            attr.size = node.link.length;
          } else {
            attr.size = 0;
          }
          attr.atime = new Date(node.timestamp);
          attr.mtime = new Date(node.timestamp);
          attr.ctime = new Date(node.timestamp);
          // NOTE: In our implementation, st_blocks = Math.ceil(st_size/st_blksize),
          //       but this is not required by the standard.
          attr.blksize = 4096;
          attr.blocks = Math.ceil(attr.size / attr.blksize);
          return attr;
        },setattr:function(node, attr) {
          if (attr.mode !== undefined) {
            node.mode = attr.mode;
          }
          if (attr.timestamp !== undefined) {
            node.timestamp = attr.timestamp;
          }
          if (attr.size !== undefined) {
            MEMFS.resizeFileStorage(node, attr.size);
          }
        },lookup:function(parent, name) {
          throw FS.genericErrors[44];
        },mknod:function(parent, name, mode, dev) {
          return MEMFS.createNode(parent, name, mode, dev);
        },rename:function(old_node, new_dir, new_name) {
          // if we're overwriting a directory at new_name, make sure it's empty.
          if (FS.isDir(old_node.mode)) {
            var new_node;
            try {
              new_node = FS.lookupNode(new_dir, new_name);
            } catch (e) {
            }
            if (new_node) {
              for (var i in new_node.contents) {
                throw new FS.ErrnoError(55);
              }
            }
          }
          // do the internal rewiring
          delete old_node.parent.contents[old_node.name];
          old_node.parent.timestamp = Date.now()
          old_node.name = new_name;
          new_dir.contents[new_name] = old_node;
          new_dir.timestamp = old_node.parent.timestamp;
          old_node.parent = new_dir;
        },unlink:function(parent, name) {
          delete parent.contents[name];
          parent.timestamp = Date.now();
        },rmdir:function(parent, name) {
          var node = FS.lookupNode(parent, name);
          for (var i in node.contents) {
            throw new FS.ErrnoError(55);
          }
          delete parent.contents[name];
          parent.timestamp = Date.now();
        },readdir:function(node) {
          var entries = ['.', '..'];
          for (var key in node.contents) {
            if (!node.contents.hasOwnProperty(key)) {
              continue;
            }
            entries.push(key);
          }
          return entries;
        },symlink:function(parent, newname, oldpath) {
          var node = MEMFS.createNode(parent, newname, 511 /* 0777 */ | 40960, 0);
          node.link = oldpath;
          return node;
        },readlink:function(node) {
          if (!FS.isLink(node.mode)) {
            throw new FS.ErrnoError(28);
          }
          return node.link;
        }},stream_ops:{read:function(stream, buffer, offset, length, position) {
          var contents = stream.node.contents;
          if (position >= stream.node.usedBytes) return 0;
          var size = Math.min(stream.node.usedBytes - position, length);
          assert(size >= 0);
          if (size > 8 && contents.subarray) { // non-trivial, and typed array
            buffer.set(contents.subarray(position, position + size), offset);
          } else {
            for (var i = 0; i < size; i++) buffer[offset + i] = contents[position + i];
          }
          return size;
        },write:function(stream, buffer, offset, length, position, canOwn) {
          // The data buffer should be a typed array view
          assert(!(buffer instanceof ArrayBuffer));
          // If the buffer is located in main memory (HEAP), and if
          // memory can grow, we can't hold on to references of the
          // memory buffer, as they may get invalidated. That means we
          // need to do copy its contents.
          if (buffer.buffer === HEAP8.buffer) {
            canOwn = false;
          }
  
          if (!length) return 0;
          var node = stream.node;
          node.timestamp = Date.now();
  
          if (buffer.subarray && (!node.contents || node.contents.subarray)) { // This write is from a typed array to a typed array?
            if (canOwn) {
              assert(position === 0, 'canOwn must imply no weird position inside the file');
              node.contents = buffer.subarray(offset, offset + length);
              node.usedBytes = length;
              return length;
            } else if (node.usedBytes === 0 && position === 0) { // If this is a simple first write to an empty file, do a fast set since we don't need to care about old data.
              node.contents = buffer.slice(offset, offset + length);
              node.usedBytes = length;
              return length;
            } else if (position + length <= node.usedBytes) { // Writing to an already allocated and used subrange of the file?
              node.contents.set(buffer.subarray(offset, offset + length), position);
              return length;
            }
          }
  
          // Appending to an existing file and we need to reallocate, or source data did not come as a typed array.
          MEMFS.expandFileStorage(node, position+length);
          if (node.contents.subarray && buffer.subarray) {
            // Use typed array write which is available.
            node.contents.set(buffer.subarray(offset, offset + length), position);
          } else {
            for (var i = 0; i < length; i++) {
             node.contents[position + i] = buffer[offset + i]; // Or fall back to manual write if not.
            }
          }
          node.usedBytes = Math.max(node.usedBytes, position + length);
          return length;
        },llseek:function(stream, offset, whence) {
          var position = offset;
          if (whence === 1) {
            position += stream.position;
          } else if (whence === 2) {
            if (FS.isFile(stream.node.mode)) {
              position += stream.node.usedBytes;
            }
          }
          if (position < 0) {
            throw new FS.ErrnoError(28);
          }
          return position;
        },allocate:function(stream, offset, length) {
          MEMFS.expandFileStorage(stream.node, offset + length);
          stream.node.usedBytes = Math.max(stream.node.usedBytes, offset + length);
        },mmap:function(stream, 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: ptr, allocated: allocated };
        },msync:function(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 */
  function 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 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 = {};
  
  function demangle(func) {
      warnOnce('warning: build with -sDEMANGLE_SUPPORT to link in libcxxabi demangling');
      return func;
    }
  function demangleAll(text) {
      var regex =
        /\b_Z[\w\d_]+/g;
      return text.replace(regex,
        function(x) {
          var y = demangle(x);
          return x === y ? x : (y + ' [' + x + ']');
        });
    }
  var FS = {root:null,mounts:[],devices:{},streams:[],nextInode:1,nameTable:null,currentPath:"/",initialized:false,ignorePermissions:true,ErrnoError:null,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, parent);
        }
        var hash = FS.hashName(parent.id, name);
        for (var node = FS.nameTable[hash]; node; node = node.name_next) {
          var nodeName = node.name;
          if (node.parent.id === parent.id && nodeName === name) {
            return node;
          }
        }
        // if we failed to find it in the cache, call into the VFS
        return FS.lookup(parent, name);
      },createNode:(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;
      },flagModes:{"r":0,"r+":2,"w":577,"w+":578,"a":1089,"a+":1090},modeStringToFlags:(str) => {
        var flags = FS.flagModes[str];
        if (typeof flags == 'undefined') {
          throw new Error('Unknown file open mode: ' + str);
        }
        return flags;
      },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) => {
        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:(fd_start = 0, fd_end = FS.MAX_OPEN_FDS) => {
        for (var fd = fd_start; fd <= fd_end; fd++) {
          if (!FS.streams[fd]) {
            return fd;
          }
        }
        throw new FS.ErrnoError(33);
      },getStream:(fd) => FS.streams[fd],createStream:(stream, fd_start, fd_end) => {
        if (!FS.FSStream) {
          FS.FSStream = /** @constructor */ function() {
            this.shared = { };
          };
          FS.FSStream.prototype = {};
          Object.defineProperties(FS.FSStream.prototype, {
            object: {
              /** @this {FS.FSStream} */
              get: function() { return this.node; },
              /** @this {FS.FSStream} */
              set: function(val) { this.node = val; }
            },
            isRead: {
              /** @this {FS.FSStream} */
              get: function() { return (this.flags & 2097155) !== 1; }
            },
            isWrite: {
              /** @this {FS.FSStream} */
              get: function() { return (this.flags & 2097155) !== 0; }
            },
            isAppend: {
              /** @this {FS.FSStream} */
              get: function() { return (this.flags & 1024); }
            },
            flags: {
              /** @this {FS.FSStream} */
              get: function() { return this.shared.flags; },
              /** @this {FS.FSStream} */
              set: function(val) { this.shared.flags = val; },
            },
            position : {
              /** @this {FS.FSStream} */
              get: function() { return this.shared.position; },
              /** @this {FS.FSStream} */
              set: function(val) { this.shared.position = val; },
            },
          });
        }
        // clone it, so we can return an instance of FSStream
        stream = Object.assign(new FS.FSStream(), stream);
        var fd = FS.nextfd(fd_start, fd_end);
        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
          if (stream.stream_ops.open) {
            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: type,
          opts: opts,
          mountpoint: mountpoint,
          mounts: []
        };
  
        // create a root node for the fs
        var mountRoot = type.mount(mount);
        mountRoot.mount = mount;
        mount.root = mountRoot;
  
        if (root) {
          FS.root = mountRoot;
        } else if (node) {
          // set as a mountpoint
          node.mounted = mount;
  
          // add the new mount to the current mount's children
          if (node.mount) {
            node.mount.mounts.push(mount);
          }
        }
  
        return mountRoot;
      },unmount:(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.getStream(fd);
        if (!stream) {
          throw new FS.ErrnoError(8);
        }
        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.getStream(fd);
        if (!stream) {
          throw new FS.ErrnoError(8);
        }
        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.getStream(fd);
        if (!stream) {
          throw new FS.ErrnoError(8);
        }
        if ((stream.flags & 2097155) === 0) {
          throw new FS.ErrnoError(28);
        }
        FS.truncate(stream.node, len);
      },utime:(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: node,
          path: FS.getPath(node),  // we want the absolute path to the node
          flags: flags,
          seekable: true,
          position: 0,
          stream_ops: node.stream_ops,
          // used by the file family libc calls (fopen, fwrite, ferror, etc.)
          ungotten: [],
          error: false
        });
        // 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) => {
        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) => {
        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) => {
        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.getStream(fd);
                if (!stream) throw new FS.ErrnoError(8);
                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 + ')');
      },ensureErrnoError:() => {
        if (FS.ErrnoError) return;
        FS.ErrnoError = /** @this{Object} */ function ErrnoError(errno, node) {
          // 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
          this.name = 'ErrnoError';
          this.node = node;
          this.setErrno = /** @this{Object} */ function(errno) {
            this.errno = errno;
            for (var key in ERRNO_CODES) {
              if (ERRNO_CODES[key] === errno) {
                this.code = key;
                break;
              }
            }
          };
          this.setErrno(errno);
          this.message = ERRNO_MESSAGES[errno];
  
          // Try to get a maximally helpful stack trace. On Node.js, getting Error.stack
          // now ensures it shows what we want.
          if (this.stack) {
            // Define the stack property for Node.js 4, which otherwise errors on the next line.
            Object.defineProperty(this, "stack", { value: (new Error).stack, writable: true });
            this.stack = demangleAll(this.stack);
          }
        };
        FS.ErrnoError.prototype = new Error();
        FS.ErrnoError.prototype.constructor = FS.ErrnoError;
        // Some errors may happen quite a bit, to avoid overhead we reuse them (and suffer a lack of stack info)
        [44].forEach((code) => {
          FS.genericErrors[code] = new FS.ErrnoError(code);
          FS.genericErrors[code].stack = '<generic error, no stack>';
        });
      },staticInit:() => {
        FS.ensureErrnoError();
  
        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;
  
        FS.ensureErrnoError();
  
        // Allow Module.stdin etc. to provide defaults, if none explicitly passed to us here
        Module['stdin'] = input || Module['stdin'];
        Module['stdout'] = output || Module['stdout'];
        Module['stderr'] = error || Module['stderr'];
  
        FS.createStandardStreams();
      },quit:() => {
        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);
        }
      },getMode:(canRead, canWrite) => {
        var mode = 0;
        if (canRead) mode |= 292 | 73;
        if (canWrite) mode |= 146;
        return mode;
      },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);
        }
        return node;
      },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 && output.buffer && 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: ptr, allocated: true };
        };
        node.stream_ops = stream_ops;
        return node;
      },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) {
            if (preFinish) preFinish();
            if (!dontCreateFile) {
              FS.createDataFile(parent, name, byteArray, canRead, canWrite, canOwn);
            }
            if (onload) onload();
            removeRunDependency(dep);
          }
          if (Browser.handledByPreloadPlugin(byteArray, fullname, finish, () => {
            if (onerror) onerror();
            removeRunDependency(dep);
          })) {
            return;
          }
          finish(byteArray);
        }
        addRunDependency(dep);
        if (typeof url == 'string') {
          asyncLoad(url, (byteArray) => processData(byteArray), onerror);
        } else {
          processData(url);
        }
      },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:function(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:function(func, path, buf) {
        try {
          var stat = func(path);
        } catch (e) {
          if (e && e.node && PATH.normalize(path) !== PATH.normalize(FS.getPath(e.node))) {
            // an error occurred while trying to look up the path; we should just report ENOTDIR
            return -54;
          }
          throw e;
        }
        HEAP32[((buf)>>2)] = stat.dev;
        HEAP32[(((buf)+(8))>>2)] = stat.ino;
        HEAP32[(((buf)+(12))>>2)] = stat.mode;
        HEAPU32[(((buf)+(16))>>2)] = stat.nlink;
        HEAP32[(((buf)+(20))>>2)] = stat.uid;
        HEAP32[(((buf)+(24))>>2)] = stat.gid;
        HEAP32[(((buf)+(28))>>2)] = stat.rdev;
        (tempI64 = [stat.size>>>0,(tempDouble=stat.size,(+(Math.abs(tempDouble))) >= 1.0 ? (tempDouble > 0.0 ? ((Math.min((+(Math.floor((tempDouble)/4294967296.0))), 4294967295.0))|0)>>>0 : (~~((+(Math.ceil((tempDouble - +(((~~(tempDouble)))>>>0))/4294967296.0)))))>>>0) : 0)],HEAP32[(((buf)+(40))>>2)] = tempI64[0],HEAP32[(((buf)+(44))>>2)] = tempI64[1]);
        HEAP32[(((buf)+(48))>>2)] = 4096;
        HEAP32[(((buf)+(52))>>2)] = stat.blocks;
        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.min((+(Math.floor((tempDouble)/4294967296.0))), 4294967295.0))|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)] = (atime % 1000) * 1000;
        (tempI64 = [Math.floor(mtime / 1000)>>>0,(tempDouble=Math.floor(mtime / 1000),(+(Math.abs(tempDouble))) >= 1.0 ? (tempDouble > 0.0 ? ((Math.min((+(Math.floor((tempDouble)/4294967296.0))), 4294967295.0))|0)>>>0 : (~~((+(Math.ceil((tempDouble - +(((~~(tempDouble)))>>>0))/4294967296.0)))))>>>0) : 0)],HEAP32[(((buf)+(72))>>2)] = tempI64[0],HEAP32[(((buf)+(76))>>2)] = tempI64[1]);
        HEAPU32[(((buf)+(80))>>2)] = (mtime % 1000) * 1000;
        (tempI64 = [Math.floor(ctime / 1000)>>>0,(tempDouble=Math.floor(ctime / 1000),(+(Math.abs(tempDouble))) >= 1.0 ? (tempDouble > 0.0 ? ((Math.min((+(Math.floor((tempDouble)/4294967296.0))), 4294967295.0))|0)>>>0 : (~~((+(Math.ceil((tempDouble - +(((~~(tempDouble)))>>>0))/4294967296.0)))))>>>0) : 0)],HEAP32[(((buf)+(88))>>2)] = tempI64[0],HEAP32[(((buf)+(92))>>2)] = tempI64[1]);
        HEAPU32[(((buf)+(96))>>2)] = (ctime % 1000) * 1000;
        (tempI64 = [stat.ino>>>0,(tempDouble=stat.ino,(+(Math.abs(tempDouble))) >= 1.0 ? (tempDouble > 0.0 ? ((Math.min((+(Math.floor((tempDouble)/4294967296.0))), 4294967295.0))|0)>>>0 : (~~((+(Math.ceil((tempDouble - +(((~~(tempDouble)))>>>0))/4294967296.0)))))>>>0) : 0)],HEAP32[(((buf)+(104))>>2)] = tempI64[0],HEAP32[(((buf)+(108))>>2)] = tempI64[1]);
        return 0;
      },doMsync:function(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:function() {
        assert(SYSCALLS.varargs != undefined);
        SYSCALLS.varargs += 4;
        var ret = HEAP32[(((SYSCALLS.varargs)-(4))>>2)];
        return ret;
      },getStr:function(ptr) {
        var ret = UTF8ToString(ptr);
        return ret;
      },getStreamFromFD:function(fd) {
        var stream = FS.getStream(fd);
        if (!stream) throw new FS.ErrnoError(8);
        return stream;
      }};
  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;
          }
          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 5:
        /* case 5: Currently in musl F_GETLK64 has same value as F_GETLK, so omitted to avoid duplicate case blocks. If that changes, uncomment this */ {
          
          var arg = SYSCALLS.get();
          var offset = 0;
          // We're always unlocked.
          HEAP16[(((arg)+(offset))>>1)] = 2;
          return 0;
        }
        case 6:
        case 7:
        /* case 6: Currently in musl F_SETLK64 has same value as F_SETLK, so omitted to avoid duplicate case blocks. If that changes, uncomment this */
        /* case 7: Currently in musl F_SETLKW64 has same value as F_SETLKW, so omitted to avoid duplicate case blocks. If that changes, uncomment this */
          
          
          return 0; // Pretend that the locking is successful.
        case 16:
        case 8:
          return -28; // These are for sockets. We don't have them fully implemented yet.
        case 9:
          // musl trusts getown return values, due to a bug where they must be, as they overlap with errors. just return -1 here, so fcntl() returns that, and we set errno ourselves.
          setErrNo(28);
          return -1;
        default: {
          return -28;
        }
      }
    } catch (e) {
    if (typeof FS == 'undefined' || !(e.name === 'ErrnoError')) throw e;
    return -e.errno;
  }
  }

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

  function ___syscall_openat(dirfd, path, flags, varargs) {
  SYSCALLS.varargs = varargs;
  try {
  
      path = SYSCALLS.getStr(path);
      path = SYSCALLS.calculateAt(dirfd, path);
      var mode = varargs ? 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 __emscripten_fs_load_embedded_files(ptr) {
      do {
        var name_addr = HEAPU32[((ptr)>>2)];
        ptr += 4;
        var len = HEAPU32[((ptr)>>2)];
        ptr += 4;
        var content = HEAPU32[((ptr)>>2)];
        ptr += 4;
        var name = UTF8ToString(name_addr)
        FS.createPath('/', PATH.dirname(name), true, true);
        // canOwn this data in the filesystem, it is a slice of wasm memory that will never change
        FS.createDataFile(name, null, HEAP8.subarray(content, content + len), true, true, true);
      } while (HEAPU32[((ptr)>>2)]);
    }

  function _abort() {
      abort('native code called abort()');
    }


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

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

  var ENV = {};
  
  function getExecutableName() {
      return thisProgram || './this.program';
    }
  function 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;
    }
  
  function 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;
    }
  
  function _environ_get(__environ, environ_buf) {
      var bufSize = 0;
      getEnvStrings().forEach(function(string, i) {
        var ptr = environ_buf + bufSize;
        HEAPU32[(((__environ)+(i*4))>>2)] = ptr;
        stringToAscii(string, ptr);
        bufSize += string.length + 1;
      });
      return 0;
    }

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

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

  /** @param {number=} offset */
  function 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;
  }
  }

  function 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) {
  try {
  
      var offset = convertI32PairToI53Checked(offset_low, offset_high); 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.min((+(Math.floor((tempDouble)/4294967296.0))), 4294967295.0))|0)>>>0 : (~~((+(Math.ceil((tempDouble - +(((~~(tempDouble)))>>>0))/4294967296.0)))))>>>0) : 0)],HEAP32[((newOffset)>>2)] = tempI64[0],HEAP32[(((newOffset)+(4))>>2)] = tempI64[1]);
      if (stream.getdents && offset === 0 && whence === 0) stream.getdents = null; // reset readdir state
      return 0;
    } catch (e) {
    if (typeof FS == 'undefined' || !(e.name === 'ErrnoError')) throw e;
    return e.errno;
  }
  }

  /** @param {number=} offset */
  function 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 isLeapYear(year) {
        return year%4 === 0 && (year%100 !== 0 || year%400 === 0);
    }
  
  function arraySum(array, index) {
      var sum = 0;
      for (var i = 0; i <= index; sum += array[i++]) {
        // no-op
      }
      return sum;
    }
  
  
  var MONTH_DAYS_LEAP = [31,29,31,30,31,30,31,31,30,31,30,31];
  
  var MONTH_DAYS_REGULAR = [31,28,31,30,31,30,31,31,30,31,30,31];
  function addDays(date, days) {
      var newDate = new Date(date.getTime());
      while (days > 0) {
        var leap = isLeapYear(newDate.getFullYear());
        var currentMonth = newDate.getMonth();
        var daysInCurrentMonth = (leap ? MONTH_DAYS_LEAP : MONTH_DAYS_REGULAR)[currentMonth];
  
        if (days > daysInCurrentMonth-newDate.getDate()) {
          // we spill over to next month
          days -= (daysInCurrentMonth-newDate.getDate()+1);
          newDate.setDate(1);
          if (currentMonth < 11) {
            newDate.setMonth(currentMonth+1)
          } else {
            newDate.setMonth(0);
            newDate.setFullYear(newDate.getFullYear()+1);
          }
        } else {
          // we stay in current month
          newDate.setDate(newDate.getDate()+days);
          return newDate;
        }
      }
  
      return newDate;
    }
  
  
  
  
  function writeArrayToMemory(array, buffer) {
      assert(array.length >= 0, 'writeArrayToMemory array must have a length (should be an array or typed array)')
      HEAP8.set(array, buffer);
    }
  
  function _strftime(s, maxsize, format, tm) {
      // size_t strftime(char *restrict s, size_t maxsize, const char *restrict format, const struct tm *restrict timeptr);
      // http://pubs.opengroup.org/onlinepubs/009695399/functions/strftime.html
  
      var tm_zone = HEAP32[(((tm)+(40))>>2)];
  
      var date = {
        tm_sec: HEAP32[((tm)>>2)],
        tm_min: HEAP32[(((tm)+(4))>>2)],
        tm_hour: HEAP32[(((tm)+(8))>>2)],
        tm_mday: HEAP32[(((tm)+(12))>>2)],
        tm_mon: HEAP32[(((tm)+(16))>>2)],
        tm_year: HEAP32[(((tm)+(20))>>2)],
        tm_wday: HEAP32[(((tm)+(24))>>2)],
        tm_yday: HEAP32[(((tm)+(28))>>2)],
        tm_isdst: HEAP32[(((tm)+(32))>>2)],
        tm_gmtoff: HEAP32[(((tm)+(36))>>2)],
        tm_zone: tm_zone ? UTF8ToString(tm_zone) : ''
      };
  
      var pattern = UTF8ToString(format);
  
      // expand format
      var EXPANSION_RULES_1 = {
        '%c': '%a %b %d %H:%M:%S %Y',     // Replaced by the locale's appropriate date and time representation - e.g., Mon Aug  3 14:02:01 2013
        '%D': '%m/%d/%y',                 // Equivalent to %m / %d / %y
        '%F': '%Y-%m-%d',                 // Equivalent to %Y - %m - %d
        '%h': '%b',                       // Equivalent to %b
        '%r': '%I:%M:%S %p',              // Replaced by the time in a.m. and p.m. notation
        '%R': '%H:%M',                    // Replaced by the time in 24-hour notation
        '%T': '%H:%M:%S',                 // Replaced by the time
        '%x': '%m/%d/%y',                 // Replaced by the locale's appropriate date representation
        '%X': '%H:%M:%S',                 // Replaced by the locale's appropriate time representation
        // Modified Conversion Specifiers
        '%Ec': '%c',                      // Replaced by the locale's alternative appropriate date and time representation.
        '%EC': '%C',                      // Replaced by the name of the base year (period) in the locale's alternative representation.
        '%Ex': '%m/%d/%y',                // Replaced by the locale's alternative date representation.
        '%EX': '%H:%M:%S',                // Replaced by the locale's alternative time representation.
        '%Ey': '%y',                      // Replaced by the offset from %EC (year only) in the locale's alternative representation.
        '%EY': '%Y',                      // Replaced by the full alternative year representation.
        '%Od': '%d',                      // Replaced by the day of the month, using the locale's alternative numeric symbols, filled as needed with leading zeros if there is any alternative symbol for zero; otherwise, with leading <space> characters.
        '%Oe': '%e',                      // Replaced by the day of the month, using the locale's alternative numeric symbols, filled as needed with leading <space> characters.
        '%OH': '%H',                      // Replaced by the hour (24-hour clock) using the locale's alternative numeric symbols.
        '%OI': '%I',                      // Replaced by the hour (12-hour clock) using the locale's alternative numeric symbols.
        '%Om': '%m',                      // Replaced by the month using the locale's alternative numeric symbols.
        '%OM': '%M',                      // Replaced by the minutes using the locale's alternative numeric symbols.
        '%OS': '%S',                      // Replaced by the seconds using the locale's alternative numeric symbols.
        '%Ou': '%u',                      // Replaced by the weekday as a number in the locale's alternative representation (Monday=1).
        '%OU': '%U',                      // Replaced by the week number of the year (Sunday as the first day of the week, rules corresponding to %U ) using the locale's alternative numeric symbols.
        '%OV': '%V',                      // Replaced by the week number of the year (Monday as the first day of the week, rules corresponding to %V ) using the locale's alternative numeric symbols.
        '%Ow': '%w',                      // Replaced by the number of the weekday (Sunday=0) using the locale's alternative numeric symbols.
        '%OW': '%W',                      // Replaced by the week number of the year (Monday as the first day of the week) using the locale's alternative numeric symbols.
        '%Oy': '%y',                      // Replaced by the year (offset from %C ) using the locale's alternative numeric symbols.
      };
      for (var rule in EXPANSION_RULES_1) {
        pattern = pattern.replace(new RegExp(rule, 'g'), EXPANSION_RULES_1[rule]);
      }
  
      var WEEKDAYS = ['Sunday', 'Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday'];
      var MONTHS = ['January', 'February', 'March', 'April', 'May', 'June', 'July', 'August', 'September', 'October', 'November', 'December'];
  
      function leadingSomething(value, digits, character) {
        var str = typeof value == 'number' ? value.toString() : (value || '');
        while (str.length < digits) {
          str = character[0]+str;
        }
        return str;
      }
  
      function leadingNulls(value, digits) {
        return leadingSomething(value, digits, '0');
      }
  
      function compareByDay(date1, date2) {
        function sgn(value) {
          return value < 0 ? -1 : (value > 0 ? 1 : 0);
        }
  
        var compare;
        if ((compare = sgn(date1.getFullYear()-date2.getFullYear())) === 0) {
          if ((compare = sgn(date1.getMonth()-date2.getMonth())) === 0) {
            compare = sgn(date1.getDate()-date2.getDate());
          }
        }
        return compare;
      }
  
      function getFirstWeekStartDate(janFourth) {
          switch (janFourth.getDay()) {
            case 0: // Sunday
              return new Date(janFourth.getFullYear()-1, 11, 29);
            case 1: // Monday
              return janFourth;
            case 2: // Tuesday
              return new Date(janFourth.getFullYear(), 0, 3);
            case 3: // Wednesday
              return new Date(janFourth.getFullYear(), 0, 2);
            case 4: // Thursday
              return new Date(janFourth.getFullYear(), 0, 1);
            case 5: // Friday
              return new Date(janFourth.getFullYear()-1, 11, 31);
            case 6: // Saturday
              return new Date(janFourth.getFullYear()-1, 11, 30);
          }
      }
  
      function getWeekBasedYear(date) {
          var thisDate = addDays(new Date(date.tm_year+1900, 0, 1), date.tm_yday);
  
          var janFourthThisYear = new Date(thisDate.getFullYear(), 0, 4);
          var janFourthNextYear = new Date(thisDate.getFullYear()+1, 0, 4);
  
          var firstWeekStartThisYear = getFirstWeekStartDate(janFourthThisYear);
          var firstWeekStartNextYear = getFirstWeekStartDate(janFourthNextYear);
  
          if (compareByDay(firstWeekStartThisYear, thisDate) <= 0) {
            // this date is after the start of the first week of this year
            if (compareByDay(firstWeekStartNextYear, thisDate) <= 0) {
              return thisDate.getFullYear()+1;
            }
            return thisDate.getFullYear();
          }
          return thisDate.getFullYear()-1;
      }
  
      var EXPANSION_RULES_2 = {
        '%a': function(date) {
          return WEEKDAYS[date.tm_wday].substring(0,3);
        },
        '%A': function(date) {
          return WEEKDAYS[date.tm_wday];
        },
        '%b': function(date) {
          return MONTHS[date.tm_mon].substring(0,3);
        },
        '%B': function(date) {
          return MONTHS[date.tm_mon];
        },
        '%C': function(date) {
          var year = date.tm_year+1900;
          return leadingNulls((year/100)|0,2);
        },
        '%d': function(date) {
          return leadingNulls(date.tm_mday, 2);
        },
        '%e': function(date) {
          return leadingSomething(date.tm_mday, 2, ' ');
        },
        '%g': function(date) {
          // %g, %G, and %V give values according to the ISO 8601:2000 standard week-based year.
          // In this system, weeks begin on a Monday and week 1 of the year is the week that includes
          // January 4th, which is also the week that includes the first Thursday of the year, and
          // is also the first week that contains at least four days in the year.
          // If the first Monday of January is the 2nd, 3rd, or 4th, the preceding days are part of
          // the last week of the preceding year; thus, for Saturday 2nd January 1999,
          // %G is replaced by 1998 and %V is replaced by 53. If December 29th, 30th,
          // or 31st is a Monday, it and any following days are part of week 1 of the following year.
          // Thus, for Tuesday 30th December 1997, %G is replaced by 1998 and %V is replaced by 01.
  
          return getWeekBasedYear(date).toString().substring(2);
        },
        '%G': function(date) {
          return getWeekBasedYear(date);
        },
        '%H': function(date) {
          return leadingNulls(date.tm_hour, 2);
        },
        '%I': function(date) {
          var twelveHour = date.tm_hour;
          if (twelveHour == 0) twelveHour = 12;
          else if (twelveHour > 12) twelveHour -= 12;
          return leadingNulls(twelveHour, 2);
        },
        '%j': function(date) {
          // Day of the year (001-366)
          return leadingNulls(date.tm_mday + arraySum(isLeapYear(date.tm_year+1900) ? MONTH_DAYS_LEAP : MONTH_DAYS_REGULAR, date.tm_mon-1), 3);
        },
        '%m': function(date) {
          return leadingNulls(date.tm_mon+1, 2);
        },
        '%M': function(date) {
          return leadingNulls(date.tm_min, 2);
        },
        '%n': function() {
          return '\n';
        },
        '%p': function(date) {
          if (date.tm_hour >= 0 && date.tm_hour < 12) {
            return 'AM';
          }
          return 'PM';
        },
        '%S': function(date) {
          return leadingNulls(date.tm_sec, 2);
        },
        '%t': function() {
          return '\t';
        },
        '%u': function(date) {
          return date.tm_wday || 7;
        },
        '%U': function(date) {
          var days = date.tm_yday + 7 - date.tm_wday;
          return leadingNulls(Math.floor(days / 7), 2);
        },
        '%V': function(date) {
          // Replaced by the week number of the year (Monday as the first day of the week)
          // as a decimal number [01,53]. If the week containing 1 January has four
          // or more days in the new year, then it is considered week 1.
          // Otherwise, it is the last week of the previous year, and the next week is week 1.
          // Both January 4th and the first Thursday of January are always in week 1. [ tm_year, tm_wday, tm_yday]
          var val = Math.floor((date.tm_yday + 7 - (date.tm_wday + 6) % 7 ) / 7);
          // If 1 Jan is just 1-3 days past Monday, the previous week
          // is also in this year.
          if ((date.tm_wday + 371 - date.tm_yday - 2) % 7 <= 2) {
            val++;
          }
          if (!val) {
            val = 52;
            // If 31 December of prev year a Thursday, or Friday of a
            // leap year, then the prev year has 53 weeks.
            var dec31 = (date.tm_wday + 7 - date.tm_yday - 1) % 7;
            if (dec31 == 4 || (dec31 == 5 && isLeapYear(date.tm_year%400-1))) {
              val++;
            }
          } else if (val == 53) {
            // If 1 January is not a Thursday, and not a Wednesday of a
            // leap year, then this year has only 52 weeks.
            var jan1 = (date.tm_wday + 371 - date.tm_yday) % 7;
            if (jan1 != 4 && (jan1 != 3 || !isLeapYear(date.tm_year)))
              val = 1;
          }
          return leadingNulls(val, 2);
        },
        '%w': function(date) {
          return date.tm_wday;
        },
        '%W': function(date) {
          var days = date.tm_yday + 7 - ((date.tm_wday + 6) % 7);
          return leadingNulls(Math.floor(days / 7), 2);
        },
        '%y': function(date) {
          // Replaced by the last two digits of the year as a decimal number [00,99]. [ tm_year]
          return (date.tm_year+1900).toString().substring(2);
        },
        '%Y': function(date) {
          // Replaced by the year as a decimal number (for example, 1997). [ tm_year]
          return date.tm_year+1900;
        },
        '%z': function(date) {
          // Replaced by the offset from UTC in the ISO 8601:2000 standard format ( +hhmm or -hhmm ).
          // For example, "-0430" means 4 hours 30 minutes behind UTC (west of Greenwich).
          var off = date.tm_gmtoff;
          var ahead = off >= 0;
          off = Math.abs(off) / 60;
          // convert from minutes into hhmm format (which means 60 minutes = 100 units)
          off = (off / 60)*100 + (off % 60);
          return (ahead ? '+' : '-') + String("0000" + off).slice(-4);
        },
        '%Z': function(date) {
          return date.tm_zone;
        },
        '%%': function() {
          return '%';
        }
      };
  
      // Replace %% with a pair of NULLs (which cannot occur in a C string), then
      // re-inject them after processing.
      pattern = pattern.replace(/%%/g, '\0\0')
      for (var rule in EXPANSION_RULES_2) {
        if (pattern.includes(rule)) {
          pattern = pattern.replace(new RegExp(rule, 'g'), EXPANSION_RULES_2[rule](date));
        }
      }
      pattern = pattern.replace(/\0\0/g, '%')
  
      var bytes = intArrayFromString(pattern, false);
      if (bytes.length > maxsize) {
        return 0;
      }
  
      writeArrayToMemory(bytes, s);
      return bytes.length-1;
    }
  function _strftime_l(s, maxsize, format, tm, loc) {
      return _strftime(s, maxsize, format, tm); // no locale support yet
    }

  
  function _proc_exit(code) {
      EXITSTATUS = code;
      if (!keepRuntimeAlive()) {
        if (Module['onExit']) Module['onExit'](code);
        ABORT = true;
      }
      quit_(code, new ExitStatus(code));
    }
  /** @param {boolean|number=} implicit */
  function 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);
    }

  function 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);
    }

  
  function stringToUTF8(str, outPtr, maxBytesToWrite) {
      assert(typeof maxBytesToWrite == 'number', 'stringToUTF8(str, outPtr, maxBytesToWrite) is missing the third parameter that specifies the length of the output buffer!');
      return stringToUTF8Array(str, HEAPU8,outPtr, maxBytesToWrite);
    }
  function stringToUTF8OnStack(str) {
      var size = lengthBytesUTF8(str) + 1;
      var ret = stackAlloc(size);
      stringToUTF8(str, ret, size);
      return ret;
    }


  function getCFunc(ident) {
      var func = Module['_' + ident]; // closure exported function
      assert(func, 'Cannot call unknown function ' + ident + ', make sure it is exported');
      return func;
    }
  
  
  
  
    /**
     * @param {string|null=} returnType
     * @param {Array=} argTypes
     * @param {Arguments|Array=} args
     * @param {Object=} opts
     */
  function ccall(ident, returnType, argTypes, args, opts) {
      // For fast lookup of conversion functions
      var toC = {
        'string': (str) => {
          var ret = 0;
          if (str !== null && str !== undefined && str !== 0) { // null string
            // at most 4 bytes per UTF-8 code point, +1 for the trailing '\0'
            ret = stringToUTF8OnStack(str);
          }
          return ret;
        },
        'array': (arr) => {
          var ret = stackAlloc(arr.length);
          writeArrayToMemory(arr, ret);
          return ret;
        }
      };
  
      function convertReturnValue(ret) {
        if (returnType === 'string') {
          
          return UTF8ToString(ret);
        }
        if (returnType === 'boolean') return Boolean(ret);
        return ret;
      }
  
      var func = getCFunc(ident);
      var cArgs = [];
      var stack = 0;
      assert(returnType !== 'array', 'Return type should not be "array".');
      if (args) {
        for (var i = 0; i < args.length; i++) {
          var converter = toC[argTypes[i]];
          if (converter) {
            if (stack === 0) stack = stackSave();
            cArgs[i] = converter(args[i]);
          } else {
            cArgs[i] = args[i];
          }
        }
      }
      var ret = func.apply(null, cArgs);
      function onDone(ret) {
        if (stack !== 0) stackRestore(stack);
        return convertReturnValue(ret);
      }
  
      ret = onDone(ret);
      return ret;
    }

  var FSNode = /** @constructor */ function(parent, name, mode, rdev) {
    if (!parent) {
      parent = this;  // root node sets parent to itself
    }
    this.parent = parent;
    this.mount = parent.mount;
    this.mounted = null;
    this.id = FS.nextInode++;
    this.name = name;
    this.mode = mode;
    this.node_ops = {};
    this.stream_ops = {};
    this.rdev = rdev;
  };
  var readMode = 292/*292*/ | 73/*73*/;
  var writeMode = 146/*146*/;
  Object.defineProperties(FSNode.prototype, {
   read: {
    get: /** @this{FSNode} */function() {
     return (this.mode & readMode) === readMode;
    },
    set: /** @this{FSNode} */function(val) {
     val ? this.mode |= readMode : this.mode &= ~readMode;
    }
   },
   write: {
    get: /** @this{FSNode} */function() {
     return (this.mode & writeMode) === writeMode;
    },
    set: /** @this{FSNode} */function(val) {
     val ? this.mode |= writeMode : this.mode &= ~writeMode;
    }
   },
   isFolder: {
    get: /** @this{FSNode} */function() {
     return FS.isDir(this.mode);
    }
   },
   isDevice: {
    get: /** @this{FSNode} */function() {
     return FS.isChrdev(this.mode);
    }
   }
  });
  FS.FSNode = FSNode;
  FS.staticInit();Module["FS_createPath"] = FS.createPath;Module["FS_createDataFile"] = FS.createDataFile;Module["FS_createPreloadedFile"] = FS.createPreloadedFile;Module["FS_unlink"] = FS.unlink;Module["FS_createLazyFile"] = FS.createLazyFile;Module["FS_createDevice"] = FS.createDevice;;
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,
    };;
// include: base64Utils.js
// Copied from https://github.com/strophe/strophejs/blob/e06d027/src/polyfills.js#L149

// This code was written by Tyler Akins and has been placed in the
// public domain.  It would be nice if you left this header intact.
// Base64 code from Tyler Akins -- http://rumkin.com

/**
 * Decodes a base64 string.
 * @param {string} input The string to decode.
 */
var decodeBase64 = typeof atob == 'function' ? atob : function (input) {
  var keyStr = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=';

  var output = '';
  var chr1, chr2, chr3;
  var enc1, enc2, enc3, enc4;
  var i = 0;
  // remove all characters that are not A-Z, a-z, 0-9, +, /, or =
  input = input.replace(/[^A-Za-z0-9\+\/\=]/g, '');
  do {
    enc1 = keyStr.indexOf(input.charAt(i++));
    enc2 = keyStr.indexOf(input.charAt(i++));
    enc3 = keyStr.indexOf(input.charAt(i++));
    enc4 = keyStr.indexOf(input.charAt(i++));

    chr1 = (enc1 << 2) | (enc2 >> 4);
    chr2 = ((enc2 & 15) << 4) | (enc3 >> 2);
    chr3 = ((enc3 & 3) << 6) | enc4;

    output = output + String.fromCharCode(chr1);

    if (enc3 !== 64) {
      output = output + String.fromCharCode(chr2);
    }
    if (enc4 !== 64) {
      output = output + String.fromCharCode(chr3);
    }
  } while (i < input.length);
  return output;
};

// Converts a string of base64 into a byte array.
// Throws error on invalid input.
function intArrayFromBase64(s) {
  if (typeof ENVIRONMENT_IS_NODE == 'boolean' && ENVIRONMENT_IS_NODE) {
    var buf = Buffer.from(s, 'base64');
    return new Uint8Array(buf['buffer'], buf['byteOffset'], buf['byteLength']);
  }

  try {
    var decoded = decodeBase64(s);
    var bytes = new Uint8Array(decoded.length);
    for (var i = 0 ; i < decoded.length ; ++i) {
      bytes[i] = decoded.charCodeAt(i);
    }
    return bytes;
  } catch (_) {
    throw new Error('Converting base64 string to bytes failed.');
  }
}

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

  return intArrayFromBase64(filename.slice(dataURIPrefix.length));
}


// end include: base64Utils.js
function checkIncomingModuleAPI() {
  ignoredModuleProp('fetchSettings');
}
var wasmImports = {
  "__assert_fail": ___assert_fail,
  "__cxa_throw": ___cxa_throw,
  "__syscall_fcntl64": ___syscall_fcntl64,
  "__syscall_ioctl": ___syscall_ioctl,
  "__syscall_openat": ___syscall_openat,
  "_emscripten_fs_load_embedded_files": __emscripten_fs_load_embedded_files,
  "abort": _abort,
  "download": download,
  "emscripten_memcpy_big": _emscripten_memcpy_big,
  "emscripten_resize_heap": _emscripten_resize_heap,
  "environ_get": _environ_get,
  "environ_sizes_get": _environ_sizes_get,
  "fd_close": _fd_close,
  "fd_read": _fd_read,
  "fd_seek": _fd_seek,
  "fd_write": _fd_write,
  "strftime_l": _strftime_l
};
var asm = createWasm();
/** @type {function(...*):?} */
var ___wasm_call_ctors = createExportWrapper("__wasm_call_ctors");
/** @type {function(...*):?} */
var _upload_file_return = Module["_upload_file_return"] = createExportWrapper("upload_file_return");
/** @type {function(...*):?} */
var _PrintCGIInfo = Module["_PrintCGIInfo"] = createExportWrapper("PrintCGIInfo");
/** @type {function(...*):?} */
var _TrimAndExportToFBX = Module["_TrimAndExportToFBX"] = createExportWrapper("TrimAndExportToFBX");
/** @type {function(...*):?} */
var _main = Module["_main"] = createExportWrapper("__main_argc_argv");
/** @type {function(...*):?} */
var ___errno_location = createExportWrapper("__errno_location");
/** @type {function(...*):?} */
var _malloc = Module["_malloc"] = createExportWrapper("malloc");
/** @type {function(...*):?} */
var _free = Module["_free"] = createExportWrapper("free");
/** @type {function(...*):?} */
var _fflush = Module["_fflush"] = createExportWrapper("fflush");
/** @type {function(...*):?} */
var _emscripten_stack_init = function() {
  return (_emscripten_stack_init = Module["asm"]["emscripten_stack_init"]).apply(null, arguments);
};

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

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

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

/** @type {function(...*):?} */
var stackSave = createExportWrapper("stackSave");
/** @type {function(...*):?} */
var stackRestore = createExportWrapper("stackRestore");
/** @type {function(...*):?} */
var stackAlloc = createExportWrapper("stackAlloc");
/** @type {function(...*):?} */
var _emscripten_stack_get_current = function() {
  return (_emscripten_stack_get_current = Module["asm"]["emscripten_stack_get_current"]).apply(null, arguments);
};

/** @type {function(...*):?} */
var ___cxa_is_pointer_type = createExportWrapper("__cxa_is_pointer_type");
/** @type {function(...*):?} */
var dynCall_viijii = Module["dynCall_viijii"] = createExportWrapper("dynCall_viijii");
/** @type {function(...*):?} */
var dynCall_iiij = Module["dynCall_iiij"] = createExportWrapper("dynCall_iiij");
/** @type {function(...*):?} */
var dynCall_iij = Module["dynCall_iij"] = createExportWrapper("dynCall_iij");
/** @type {function(...*):?} */
var dynCall_jiji = Module["dynCall_jiji"] = createExportWrapper("dynCall_jiji");
/** @type {function(...*):?} */
var dynCall_iiiiij = Module["dynCall_iiiiij"] = createExportWrapper("dynCall_iiiiij");
/** @type {function(...*):?} */
var dynCall_iiiiijj = Module["dynCall_iiiiijj"] = createExportWrapper("dynCall_iiiiijj");
/** @type {function(...*):?} */
var dynCall_iiiiiijj = Module["dynCall_iiiiiijj"] = createExportWrapper("dynCall_iiiiiijj");
var ___emscripten_embedded_file_data = Module['___emscripten_embedded_file_data'] = 204988;
var ___start_em_js = Module['___start_em_js'] = 220044;
var ___stop_em_js = Module['___stop_em_js'] = 221492;

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

Module["addRunDependency"] = addRunDependency;
Module["removeRunDependency"] = removeRunDependency;
Module["FS_createPath"] = FS.createPath;
Module["FS_createDataFile"] = FS.createDataFile;
Module["FS_createPreloadedFile"] = FS.createPreloadedFile;
Module["FS_createLazyFile"] = FS.createLazyFile;
Module["FS_createDevice"] = FS.createDevice;
Module["FS_unlink"] = FS.unlink;
Module["ccall"] = ccall;
var missingLibrarySymbols = [
  'ydayFromDate',
  'inetPton4',
  'inetNtop4',
  'inetPton6',
  'inetNtop6',
  'readSockaddr',
  'writeSockaddr',
  'getHostByName',
  'traverseStack',
  'getCallstack',
  'emscriptenLog',
  'convertPCtoSourceLocation',
  'readEmAsmArgs',
  'jstoi_q',
  'jstoi_s',
  'listenOnce',
  'autoResumeAudioContext',
  'dynCallLegacy',
  'getDynCaller',
  'dynCall',
  'runtimeKeepalivePush',
  'runtimeKeepalivePop',
  'callUserCallback',
  'maybeExit',
  'safeSetTimeout',
  'asmjsMangle',
  'HandleAllocator',
  'getNativeTypeSize',
  'STACK_SIZE',
  'STACK_ALIGN',
  'POINTER_SIZE',
  'ASSERTIONS',
  'writeI53ToI64',
  'writeI53ToI64Clamped',
  'writeI53ToI64Signaling',
  'writeI53ToU64Clamped',
  'writeI53ToU64Signaling',
  'readI53FromI64',
  'readI53FromU64',
  'convertI32PairToI53',
  'convertU32PairToI53',
  'cwrap',
  'uleb128Encode',
  'sigToWasmTypes',
  'generateFuncType',
  'convertJsFunctionToWasm',
  'getEmptyTableSlot',
  'updateTableMap',
  'getFunctionAddress',
  'addFunction',
  'removeFunction',
  'reallyNegative',
  'unSign',
  'strLen',
  'reSign',
  'formatString',
  'intArrayToString',
  'AsciiToString',
  'UTF16ToString',
  'stringToUTF16',
  'lengthBytesUTF16',
  'UTF32ToString',
  'stringToUTF32',
  'lengthBytesUTF32',
  'stringToNewUTF8',
  'getSocketFromFD',
  'getSocketAddress',
  'registerKeyEventCallback',
  'maybeCStringToJsString',
  'findEventTarget',
  'findCanvasEventTarget',
  'getBoundingClientRect',
  'fillMouseEventData',
  'registerMouseEventCallback',
  'registerWheelEventCallback',
  'registerUiEventCallback',
  'registerFocusEventCallback',
  'fillDeviceOrientationEventData',
  'registerDeviceOrientationEventCallback',
  'fillDeviceMotionEventData',
  'registerDeviceMotionEventCallback',
  'screenOrientation',
  'fillOrientationChangeEventData',
  'registerOrientationChangeEventCallback',
  'fillFullscreenChangeEventData',
  'registerFullscreenChangeEventCallback',
  'JSEvents_requestFullscreen',
  'JSEvents_resizeCanvasForFullscreen',
  'registerRestoreOldStyle',
  'hideEverythingExceptGivenElement',
  'restoreHiddenElements',
  'setLetterbox',
  'softFullscreenResizeWebGLRenderTarget',
  'doRequestFullscreen',
  'fillPointerlockChangeEventData',
  'registerPointerlockChangeEventCallback',
  'registerPointerlockErrorEventCallback',
  'requestPointerLock',
  'fillVisibilityChangeEventData',
  'registerVisibilityChangeEventCallback',
  'registerTouchEventCallback',
  'fillGamepadEventData',
  'registerGamepadEventCallback',
  'registerBeforeUnloadEventCallback',
  'fillBatteryEventData',
  'battery',
  'registerBatteryEventCallback',
  'setCanvasElementSize',
  'getCanvasElementSize',
  'jsStackTrace',
  'stackTrace',
  'checkWasiClock',
  'wasiRightsToMuslOFlags',
  'wasiOFlagsToMuslOFlags',
  'createDyncallWrapper',
  'setImmediateWrapped',
  'clearImmediateWrapped',
  'polyfillSetImmediate',
  'getPromise',
  'makePromise',
  'makePromiseCallback',
  'exception_addRef',
  'exception_decRef',
  'setMainLoop',
  '_setNetworkCallback',
  'heapObjectForWebGLType',
  'heapAccessShiftForWebGLHeap',
  'webgl_enable_ANGLE_instanced_arrays',
  'webgl_enable_OES_vertex_array_object',
  'webgl_enable_WEBGL_draw_buffers',
  'webgl_enable_WEBGL_multi_draw',
  'emscriptenWebGLGet',
  'computeUnpackAlignedImageSize',
  'colorChannelsInGlTextureFormat',
  'emscriptenWebGLGetTexPixelData',
  '__glGenObject',
  'emscriptenWebGLGetUniform',
  'webglGetUniformLocation',
  'webglPrepareUniformLocationsBeforeFirstUse',
  'webglGetLeftBracePos',
  'emscriptenWebGLGetVertexAttrib',
  '__glGetActiveAttribOrUniform',
  'writeGLArray',
  'registerWebGlEventCallback',
  'runAndAbortIfError',
  'SDL_unicode',
  'SDL_ttfContext',
  'SDL_audio',
  'GLFW_Window',
  'ALLOC_NORMAL',
  'ALLOC_STACK',
  'allocate',
  'writeStringToMemory',
  'writeAsciiToMemory',
];
missingLibrarySymbols.forEach(missingLibrarySymbol)

var unexportedSymbols = [
  'run',
  'addOnPreRun',
  'addOnInit',
  'addOnPreMain',
  'addOnExit',
  'addOnPostRun',
  'FS_createFolder',
  'FS_createLink',
  'out',
  'err',
  'callMain',
  'abort',
  'keepRuntimeAlive',
  'wasmMemory',
  'stackAlloc',
  'stackSave',
  'stackRestore',
  'getTempRet0',
  'setTempRet0',
  'writeStackCookie',
  'checkStackCookie',
  'ptrToString',
  'zeroMemory',
  'exitJS',
  'getHeapMax',
  'emscripten_realloc_buffer',
  'ENV',
  'MONTH_DAYS_REGULAR',
  'MONTH_DAYS_LEAP',
  'MONTH_DAYS_REGULAR_CUMULATIVE',
  'MONTH_DAYS_LEAP_CUMULATIVE',
  'isLeapYear',
  'arraySum',
  'addDays',
  'ERRNO_CODES',
  'ERRNO_MESSAGES',
  'setErrNo',
  'DNS',
  'Protocols',
  'Sockets',
  'initRandomFill',
  'randomFill',
  'timers',
  'warnOnce',
  'UNWIND_CACHE',
  'readEmAsmArgsArray',
  'getExecutableName',
  'handleException',
  'asyncLoad',
  'alignMemory',
  'mmapAlloc',
  'convertI32PairToI53Checked',
  'getCFunc',
  'freeTableIndexes',
  'functionsInTableMap',
  'setValue',
  'getValue',
  'PATH',
  'PATH_FS',
  'UTF8Decoder',
  'UTF8ArrayToString',
  'UTF8ToString',
  'stringToUTF8Array',
  'stringToUTF8',
  'lengthBytesUTF8',
  'intArrayFromString',
  'stringToAscii',
  'UTF16Decoder',
  'stringToUTF8OnStack',
  'writeArrayToMemory',
  'SYSCALLS',
  'JSEvents',
  'specialHTMLTargets',
  'currentFullscreenStrategy',
  'restoreOldWindowedStyle',
  'demangle',
  'demangleAll',
  'ExitStatus',
  'getEnvStrings',
  'doReadv',
  'doWritev',
  'dlopenMissingError',
  'promiseMap',
  'uncaughtExceptionCount',
  'exceptionLast',
  'exceptionCaught',
  'ExceptionInfo',
  'Browser',
  'wget',
  'FS',
  'MEMFS',
  'TTY',
  'PIPEFS',
  'SOCKFS',
  'tempFixedLengthArray',
  'miniTempWebGLFloatBuffers',
  'miniTempWebGLIntBuffers',
  'GL',
  'emscripten_webgl_power_preferences',
  'AL',
  'GLUT',
  'EGL',
  'GLEW',
  'IDBStore',
  'SDL',
  'SDL_gfx',
  'GLFW',
  '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 >> 2;
  args.forEach((arg) => {
    HEAP32[argv_ptr++] = stringToUTF8OnStack(arg);
  });
  HEAP32[argv_ptr] = 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 && tty.output && tty.output.length) {
        has = true;
      }
    });
  } catch(e) {}
  out = oldOut;
  err = oldErr;
  if (has) {
    warnOnce('stdio streams had content in them that was not flushed. you should set EXIT_RUNTIME to 1 (see the FAQ), or make sure to emit a newline when you printf etc.');
  }
}

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