text: #!C:/Users/Thoth/emsdk/node/12.18.1_64bit/bin/node.exe
  
  
  // 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)
  // {{PRE_JSES}}
  
  // 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 = {};
  var key;
  for (key in Module) {
    if (Module.hasOwnProperty(key)) {
      moduleOverrides[key] = Module[key];
    }
  }
  
  var arguments_ = [];
  var thisProgram = './this.program';
  var quit_ = function(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).
  
  var ENVIRONMENT_IS_WEB = false;
  var ENVIRONMENT_IS_WORKER = false;
  var ENVIRONMENT_IS_NODE = false;
  var ENVIRONMENT_IS_SHELL = false;
  ENVIRONMENT_IS_WEB = typeof window === 'object';
  ENVIRONMENT_IS_WORKER = typeof importScripts === 'function';
  // N.b. Electron.js environment is simultaneously a NODE-environment, but
  // also a web environment.
  ENVIRONMENT_IS_NODE = typeof process === 'object' && typeof process.versions === 'object' && typeof process.versions.node === 'string';
  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, -s ENVIRONMENT=web or -s ENVIRONMENT=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;
  
  var nodeFS;
  var nodePath;
  
  if (ENVIRONMENT_IS_NODE) {
    if (ENVIRONMENT_IS_WORKER) {
      scriptDirectory = require('path').dirname(scriptDirectory) + '/';
    } else {
      scriptDirectory = __dirname + '/';
    }
  
  // include: node_shell_read.js
  
  
  read_ = function shell_read(filename, binary) {
    if (!nodeFS) nodeFS = require('fs');
    if (!nodePath) nodePath = require('path');
    filename = nodePath['normalize'](filename);
    return nodeFS['readFileSync'](filename, binary ? null : 'utf8');
  };
  
  readBinary = function readBinary(filename) {
    var ret = read_(filename, true);
    if (!ret.buffer) {
      ret = new Uint8Array(ret);
    }
    assert(ret.buffer);
    return ret;
  };
  
  // end include: node_shell_read.js
    if (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 instanceof ExitStatus)) {
        throw ex;
      }
    });
  
    process['on']('unhandledRejection', abort);
  
    quit_ = function(status) {
      process['exit'](status);
    };
  
    Module['inspect'] = function () { return '[Emscripten Module object]'; };
  
  } else
  if (ENVIRONMENT_IS_SHELL) {
  
    if (typeof read != 'undefined') {
      read_ = function shell_read(f) {
        return read(f);
      };
    }
  
    readBinary = function readBinary(f) {
      var data;
      if (typeof readbuffer === 'function') {
        return new Uint8Array(readbuffer(f));
      }
      data = read(f, 'binary');
      assert(typeof data === 'object');
      return data;
    };
  
    if (typeof scriptArgs != 'undefined') {
      arguments_ = scriptArgs;
    } else if (typeof arguments != 'undefined') {
      arguments_ = arguments;
    }
  
    if (typeof quit === 'function') {
      quit_ = function(status) {
        quit(status);
      };
    }
  
    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.indexOf('blob:') !== 0) {
      scriptDirectory = scriptDirectory.substr(0, scriptDirectory.lastIndexOf('/')+1);
    } else {
      scriptDirectory = '';
    }
  
    // Differentiate the Web Worker from the Node Worker case, as reading must
    // be done differently.
    {
  
  // include: web_or_worker_shell_read.js
  
  
    read_ = function shell_read(url) {
        var xhr = new XMLHttpRequest();
        xhr.open('GET', url, false);
        xhr.send(null);
        return xhr.responseText;
    };
  
    if (ENVIRONMENT_IS_WORKER) {
      readBinary = function 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 = function readAsync(url, onload, onerror) {
      var xhr = new XMLHttpRequest();
      xhr.open('GET', url, true);
      xhr.responseType = 'arraybuffer';
      xhr.onload = function 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 = function(title) { document.title = title };
  } else
  {
    throw new Error('environment detection error');
  }
  
  // Set up the out() and err() hooks, which are how we can print to stdout or
  // stderr, respectively.
  var out = Module['print'] || console.log.bind(console);
  var err = Module['printErr'] || console.warn.bind(console);
  
  // Merge back in the overrides
  for (key in moduleOverrides) {
    if (moduleOverrides.hasOwnProperty(key)) {
      Module[key] = moduleOverrides[key];
    }
  }
  // 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;
  
  // 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'];if (!Object.getOwnPropertyDescriptor(Module, 'arguments')) Object.defineProperty(Module, 'arguments', { configurable: true, get: function() { abort('Module.arguments has been replaced with plain arguments_ (the initial value can be provided on Module, but after startup the value is only looked for on a local variable of that name)') } });
  if (Module['thisProgram']) thisProgram = Module['thisProgram'];if (!Object.getOwnPropertyDescriptor(Module, 'thisProgram')) Object.defineProperty(Module, 'thisProgram', { configurable: true, get: function() { abort('Module.thisProgram has been replaced with plain thisProgram (the initial value can be provided on Module, but after startup the value is only looked for on a local variable of that name)') } });
  if (Module['quit']) quit_ = Module['quit'];if (!Object.getOwnPropertyDescriptor(Module, 'quit')) Object.defineProperty(Module, 'quit', { configurable: true, get: function() { abort('Module.quit has been replaced with plain quit_ (the initial value can be provided on Module, but after startup the value is only looked for on a local variable of that name)') } });
  
  // 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');
  if (!Object.getOwnPropertyDescriptor(Module, 'read')) Object.defineProperty(Module, 'read', { configurable: true, get: function() { abort('Module.read has been replaced with plain read_ (the initial value can be provided on Module, but after startup the value is only looked for on a local variable of that name)') } });
  if (!Object.getOwnPropertyDescriptor(Module, 'readAsync')) Object.defineProperty(Module, 'readAsync', { configurable: true, get: function() { abort('Module.readAsync has been replaced with plain readAsync (the initial value can be provided on Module, but after startup the value is only looked for on a local variable of that name)') } });
  if (!Object.getOwnPropertyDescriptor(Module, 'readBinary')) Object.defineProperty(Module, 'readBinary', { configurable: true, get: function() { abort('Module.readBinary has been replaced with plain readBinary (the initial value can be provided on Module, but after startup the value is only looked for on a local variable of that name)') } });
  if (!Object.getOwnPropertyDescriptor(Module, 'setWindowTitle')) Object.defineProperty(Module, 'setWindowTitle', { configurable: true, get: function() { abort('Module.setWindowTitle has been replaced with plain setWindowTitle (the initial value can be provided on Module, but after startup the value is only looked for on a local variable of that name)') } });
  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';
  
  
  
  
  var STACK_ALIGN = 16;
  
  function alignMemory(size, factor) {
    if (!factor) factor = STACK_ALIGN; // stack alignment (16-byte) by default
    return Math.ceil(size / factor) * factor;
  }
  
  function getNativeTypeSize(type) {
    switch (type) {
      case 'i1': case 'i8': return 1;
      case 'i16': return 2;
      case 'i32': return 4;
      case 'i64': return 8;
      case 'float': return 4;
      case 'double': return 8;
      default: {
        if (type[type.length-1] === '*') {
          return 4; // A pointer
        } else if (type[0] === 'i') {
          var bits = Number(type.substr(1));
          assert(bits % 8 === 0, 'getNativeTypeSize invalid bits ' + bits + ', type ' + type);
          return bits / 8;
        } else {
          return 0;
        }
      }
    }
  }
  
  function warnOnce(text) {
    if (!warnOnce.shown) warnOnce.shown = {};
    if (!warnOnce.shown[text]) {
      warnOnce.shown[text] = 1;
      err(text);
    }
  }
  
  // include: runtime_functions.js
  
  
  // Wraps a JS function as a wasm function with a given signature.
  function convertJsFunctionToWasm(func, sig) {
  
    // If the type reflection proposal is available, use the new
    // "WebAssembly.Function" constructor.
    // Otherwise, construct a minimal wasm module importing the JS function and
    // re-exporting it.
    if (typeof WebAssembly.Function === "function") {
      var typeNames = {
        'i': 'i32',
        'j': 'i64',
        'f': 'f32',
        'd': 'f64'
      };
      var type = {
        parameters: [],
        results: sig[0] == 'v' ? [] : [typeNames[sig[0]]]
      };
      for (var i = 1; i < sig.length; ++i) {
        type.parameters.push(typeNames[sig[i]]);
      }
      return new WebAssembly.Function(type, func);
    }
  
    // The module is static, with the exception of the type section, which is
    // generated based on the signature passed in.
    var typeSection = [
      0x01, // id: section,
      0x00, // length: 0 (placeholder)
      0x01, // count: 1
      0x60, // form: func
    ];
    var sigRet = sig.slice(0, 1);
    var sigParam = sig.slice(1);
    var typeCodes = {
      'i': 0x7f, // i32
      'j': 0x7e, // i64
      'f': 0x7d, // f32
      'd': 0x7c, // f64
    };
  
    // Parameters, length + signatures
    typeSection.push(sigParam.length);
    for (var i = 0; i < sigParam.length; ++i) {
      typeSection.push(typeCodes[sigParam[i]]);
    }
  
    // Return values, length + signatures
    // With no multi-return in MVP, either 0 (void) or 1 (anything else)
    if (sigRet == 'v') {
      typeSection.push(0x00);
    } else {
      typeSection = typeSection.concat([0x01, typeCodes[sigRet]]);
    }
  
    // Write the overall length of the type section back into the section header
    // (excepting the 2 bytes for the section id and length)
    typeSection[1] = typeSection.length - 2;
  
    // Rest of the module is static
    var bytes = new Uint8Array([
      0x00, 0x61, 0x73, 0x6d, // magic ("\0asm")
      0x01, 0x00, 0x00, 0x00, // version: 1
    ].concat(typeSection, [
      0x02, 0x07, // import section
        // (import "e" "f" (func 0 (type 0)))
        0x01, 0x01, 0x65, 0x01, 0x66, 0x00, 0x00,
      0x07, 0x05, // export section
        // (export "f" (func 0 (type 0)))
        0x01, 0x01, 0x66, 0x00, 0x00,
    ]));
  
     // We can compile this wasm module synchronously because it is very small.
    // This accepts an import (at "e.f"), that it reroutes to an export (at "f")
    var module = new WebAssembly.Module(bytes);
    var instance = new WebAssembly.Instance(module, {
      'e': {
        'f': func
      }
    });
    var wrappedFunc = instance.exports['f'];
    return wrappedFunc;
  }
  
  var freeTableIndexes = [];
  
  // Weak map of functions in the table to their indexes, created on first use.
  var functionsInTableMap;
  
  function getEmptyTableSlot() {
    // Reuse a free index if there is one, otherwise grow.
    if (freeTableIndexes.length) {
      return freeTableIndexes.pop();
    }
    // Grow the table
    try {
      wasmTable.grow(1);
    } catch (err) {
      if (!(err instanceof RangeError)) {
        throw err;
      }
      throw 'Unable to grow wasm table. Set ALLOW_TABLE_GROWTH.';
    }
    return wasmTable.length - 1;
  }
  
  // Add a wasm function to the table.
  function addFunctionWasm(func, sig) {
    // Check if the function is already in the table, to ensure each function
    // gets a unique index. First, create the map if this is the first use.
    if (!functionsInTableMap) {
      functionsInTableMap = new WeakMap();
      for (var i = 0; i < wasmTable.length; i++) {
        var item = wasmTable.get(i);
        // Ignore null values.
        if (item) {
          functionsInTableMap.set(item, i);
        }
      }
    }
    if (functionsInTableMap.has(func)) {
      return functionsInTableMap.get(func);
    }
  
    // It's not in the table, add it now.
  
    var ret = getEmptyTableSlot();
  
    // Set the new value.
    try {
      // Attempting to call this with JS function will cause of table.set() to fail
      wasmTable.set(ret, func);
    } catch (err) {
      if (!(err instanceof TypeError)) {
        throw err;
      }
      assert(typeof sig !== 'undefined', 'Missing signature argument to addFunction: ' + func);
      var wrapped = convertJsFunctionToWasm(func, sig);
      wasmTable.set(ret, wrapped);
    }
  
    functionsInTableMap.set(func, ret);
  
    return ret;
  }
  
  function removeFunction(index) {
    functionsInTableMap.delete(wasmTable.get(index));
    freeTableIndexes.push(index);
  }
  
  // 'sig' parameter is required for the llvm backend but only when func is not
  // already a WebAssembly function.
  function addFunction(func, sig) {
    assert(typeof func !== 'undefined');
  
    return addFunctionWasm(func, sig);
  }
  
  // end include: runtime_functions.js
  // include: runtime_debug.js
  
  
  // end include: runtime_debug.js
  function makeBigInt(low, high, unsigned) {
    return unsigned ? ((+((low>>>0)))+((+((high>>>0)))*4294967296.0)) : ((+((low>>>0)))+((+((high|0)))*4294967296.0));
  }
  
  var tempRet0 = 0;
  
  var setTempRet0 = function(value) {
    tempRet0 = value;
  };
  
  var getTempRet0 = function() {
    return tempRet0;
  };
  
  function getCompilerSetting(name) {
    throw 'You must build with -s RETAIN_COMPILER_SETTINGS=1 for getCompilerSetting or emscripten_get_compiler_setting to work';
  }
  
  
  
  // === 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'];if (!Object.getOwnPropertyDescriptor(Module, 'wasmBinary')) Object.defineProperty(Module, 'wasmBinary', { configurable: true, get: function() { abort('Module.wasmBinary has been replaced with plain wasmBinary (the initial value can be provided on Module, but after startup the value is only looked for on a local variable of that name)') } });
  var noExitRuntime;if (Module['noExitRuntime']) noExitRuntime = Module['noExitRuntime'];if (!Object.getOwnPropertyDescriptor(Module, 'noExitRuntime')) Object.defineProperty(Module, 'noExitRuntime', { configurable: true, get: function() { abort('Module.noExitRuntime has been replaced with plain noExitRuntime (the initial value can be provided on Module, but after startup the value is only looked for on a local variable of that name)') } });
  
  if (typeof WebAssembly !== 'object') {
    abort('no native wasm support detected');
  }
  
  // include: runtime_safe_heap.js
  
  
  // In MINIMAL_RUNTIME, setValue() and getValue() are only available when building with safe heap enabled, for heap safety checking.
  // In traditional runtime, setValue() and getValue() are always available (although their use is highly discouraged due to perf penalties)
  
  /** @param {number} ptr
      @param {number} value
      @param {string} type
      @param {number|boolean=} noSafe */
  function setValue(ptr, value, type, noSafe) {
    type = type || 'i8';
    if (type.charAt(type.length-1) === '*') type = 'i32'; // pointers are 32-bit
      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;
        default: abort('invalid type for setValue: ' + type);
      }
  }
  
  /** @param {number} ptr
      @param {string} type
      @param {number|boolean=} noSafe */
  function getValue(ptr, type, noSafe) {
    type = type || 'i8';
    if (type.charAt(type.length-1) === '*') type = 'i32'; // pointers are 32-bit
      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)];
        default: abort('invalid type for getValue: ' + type);
      }
    return null;
  }
  
  // end include: runtime_safe_heap.js
  // Wasm globals
  
  var wasmMemory;
  
  //========================================
  // Runtime essentials
  //========================================
  
  // whether we are quitting the application. no code should run after this.
  // set in exit() and abort()
  var ABORT = false;
  
  // set by exit() and abort().  Passed to 'onExit' handler.
  // NOTE: This is also used as the process return code code in shell environments
  // but only when noExitRuntime is false.
  var EXITSTATUS;
  
  /** @type {function(*, string=)} */
  function assert(condition, text) {
    if (!condition) {
      abort('Assertion failed: ' + text);
    }
  }
  
  // Returns the C function with a specified identifier (for C++, you need to do manual name mangling)
  function getCFunc(ident) {
    var func = Module['_' + ident]; // closure exported function
    assert(func, 'Cannot call unknown function ' + ident + ', make sure it is exported');
    return func;
  }
  
  // C calling interface.
  /** @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': function(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'
          var len = (str.length << 2) + 1;
          ret = stackAlloc(len);
          stringToUTF8(str, ret, len);
        }
        return ret;
      },
      'array': function(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);
  
    ret = convertReturnValue(ret);
    if (stack !== 0) stackRestore(stack);
    return ret;
  }
  
  /** @param {string=} returnType
      @param {Array=} argTypes
      @param {Object=} opts */
  function cwrap(ident, returnType, argTypes, opts) {
    return function() {
      return ccall(ident, returnType, argTypes, arguments, opts);
    }
  }
  
  // We used to include malloc/free by default in the past. Show a helpful error in
  // builds with assertions.
  
  var ALLOC_NORMAL = 0; // Tries to use _malloc()
  var ALLOC_STACK = 1; // Lives for the duration of the current function call
  
  // allocate(): This is for internal use. You can use it yourself as well, but the interface
  //             is a little tricky (see docs right below). The reason is that it is optimized
  //             for multiple syntaxes to save space in generated code. So you should
  //             normally not use allocate(), and instead allocate memory using _malloc(),
  //             initialize it with setValue(), and so forth.
  // @slab: An array of data.
  // @allocator: How to allocate memory, see ALLOC_*
  /** @type {function((Uint8Array|Array<number>), number)} */
  function allocate(slab, allocator) {
    var ret;
    assert(typeof allocator === 'number', 'allocate no longer takes a type argument')
    assert(typeof slab !== 'number', 'allocate no longer takes a number as arg0')
  
    if (allocator == ALLOC_STACK) {
      ret = stackAlloc(slab.length);
    } else {
      ret = _malloc(slab.length);
    }
  
    if (slab.subarray || slab.slice) {
      HEAPU8.set(/** @type {!Uint8Array} */(slab), ret);
    } else {
      HEAPU8.set(new Uint8Array(slab), ret);
    }
    return ret;
  }
  
  // include: runtime_strings.js
  
  
  // runtime_strings.js: Strings related runtime functions that are part of both MINIMAL_RUNTIME and regular runtime.
  
  // Given a pointer 'ptr' 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.
  
  var UTF8Decoder = typeof TextDecoder !== 'undefined' ? new TextDecoder('utf8') : undefined;
  
  /**
   * @param {number} idx
   * @param {number=} maxBytesToRead
   * @return {string}
   */
  function UTF8ArrayToString(heap, 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 (heap[endPtr] && !(endPtr >= endIdx)) ++endPtr;
  
    if (endPtr - idx > 16 && heap.subarray && UTF8Decoder) {
      return UTF8Decoder.decode(heap.subarray(idx, endPtr));
    } else {
      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 = heap[idx++];
        if (!(u0 & 0x80)) { str += String.fromCharCode(u0); continue; }
        var u1 = heap[idx++] & 63;
        if ((u0 & 0xE0) == 0xC0) { str += String.fromCharCode(((u0 & 31) << 6) | u1); continue; }
        var u2 = heap[idx++] & 63;
        if ((u0 & 0xF0) == 0xE0) {
          u0 = ((u0 & 15) << 12) | (u1 << 6) | u2;
        } else {
          if ((u0 & 0xF8) != 0xF0) warnOnce('Invalid UTF-8 leading byte 0x' + u0.toString(16) + ' encountered when deserializing a UTF-8 string on the asm.js/wasm heap to a JS string!');
          u0 = ((u0 & 7) << 18) | (u1 << 12) | (u2 << 6) | (heap[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.
  // maxBytesToRead: an optional length that specifies the maximum number of bytes to read. You can omit
  //                 this parameter to scan the string until the first \0 byte. If maxBytesToRead is
  //                 passed, and the string at [ptr, ptr+maxBytesToReadr[ contains a null byte in the
  //                 middle, then the string will cut short at that byte index (i.e. maxBytesToRead will
  //                 not produce a string of exact length [ptr, ptr+maxBytesToRead[)
  //                 N.B. mixing frequent uses of UTF8ToString() with and without maxBytesToRead may
  //                 throw JS JIT optimizations off, so it is worth to consider consistently using one
  //                 style or the other.
  /**
   * @param {number} ptr
   * @param {number=} maxBytesToRead
   * @return {string}
   */
  function UTF8ToString(ptr, maxBytesToRead) {
    return ptr ? UTF8ArrayToString(HEAPU8, ptr, maxBytesToRead) : '';
  }
  
  // Copies the given Javascript String object 'str' to the given byte array at address 'outIdx',
  // encoded in UTF8 form and null-terminated. The copy will require at most str.length*4+1 bytes of space in the HEAP.
  // Use the function lengthBytesUTF8 to compute the exact number of bytes (excluding null terminator) that this function will write.
  // Parameters:
  //   str: the Javascript string to copy.
  //   heap: the array to copy to. Each index in this array is assumed to be one 8-byte element.
  //   outIdx: The starting offset in the array to begin the copying.
  //   maxBytesToWrite: The maximum number of bytes this function can write to the array.
  //                    This count should include the null terminator,
  //                    i.e. if maxBytesToWrite=1, only the null terminator will be written and nothing else.
  //                    maxBytesToWrite=0 does not write any bytes to the output, not even the null terminator.
  // Returns the number of bytes written, EXCLUDING the null terminator.
  
  function stringToUTF8Array(str, heap, outIdx, maxBytesToWrite) {
    if (!(maxBytesToWrite > 0)) // Parameter maxBytesToWrite is not optional. Negative values, 0, null, undefined and false each don't write out any bytes.
      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 >= 0x200000) warnOnce('Invalid Unicode code point 0x' + u.toString(16) + ' encountered when serializing a JS string to an UTF-8 string on the asm.js/wasm heap! (Valid unicode code points should be in range 0-0x1FFFFF).');
        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;
  }
  
  // Copies the given Javascript String object 'str' to the emscripten HEAP at address 'outPtr',
  // null-terminated and encoded in UTF8 form. The copy will require at most str.length*4+1 bytes of space in the HEAP.
  // Use the function lengthBytesUTF8 to compute the exact number of bytes (excluding null terminator) that this function will write.
  // Returns the number of bytes written, EXCLUDING the null terminator.
  
  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);
  }
  
  // Returns the number of bytes the given Javascript string takes if encoded as a UTF8 byte array, EXCLUDING the null terminator byte.
  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 u = str.charCodeAt(i); // possibly a lead surrogate
      if (u >= 0xD800 && u <= 0xDFFF) u = 0x10000 + ((u & 0x3FF) << 10) | (str.charCodeAt(++i) & 0x3FF);
      if (u <= 0x7F) ++len;
      else if (u <= 0x7FF) len += 2;
      else if (u <= 0xFFFF) len += 3;
      else len += 4;
    }
    return len;
  }
  
  // end include: runtime_strings.js
  // include: runtime_strings_extra.js
  
  
  // runtime_strings_extra.js: Strings related runtime functions that are available only in regular runtime.
  
  // Given a pointer 'ptr' to a null-terminated ASCII-encoded string in the emscripten HEAP, returns
  // a copy of that string as a Javascript String object.
  
  function AsciiToString(ptr) {
    var str = '';
    while (1) {
      var ch = HEAPU8[((ptr++)>>0)];
      if (!ch) return str;
      str += String.fromCharCode(ch);
    }
  }
  
  // Copies the given Javascript String object 'str' to the emscripten HEAP at address 'outPtr',
  // null-terminated and encoded in ASCII form. The copy will require at most str.length+1 bytes of space in the HEAP.
  
  function stringToAscii(str, outPtr) {
    return writeAsciiToMemory(str, outPtr, false);
  }
  
  // Given a pointer 'ptr' to a null-terminated UTF16LE-encoded string in the emscripten HEAP, returns
  // a copy of that string as a Javascript String object.
  
  var UTF16Decoder = typeof TextDecoder !== 'undefined' ? new TextDecoder('utf-16le') : undefined;
  
  function UTF16ToString(ptr, maxBytesToRead) {
    assert(ptr % 2 == 0, 'Pointer passed to UTF16ToString must be aligned to two bytes!');
    var endPtr = ptr;
    // 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.
    var idx = endPtr >> 1;
    var maxIdx = idx + maxBytesToRead / 2;
    // If maxBytesToRead is not passed explicitly, it will be undefined, and this
    // will always evaluate to true. This saves on code size.
    while (!(idx >= maxIdx) && HEAPU16[idx]) ++idx;
    endPtr = idx << 1;
  
    if (endPtr - ptr > 32 && UTF16Decoder) {
      return UTF16Decoder.decode(HEAPU8.subarray(ptr, endPtr));
    } else {
      var str = '';
  
      // If maxBytesToRead is not passed explicitly, it will be undefined, and the for-loop's condition
      // will always evaluate to true. The loop is then terminated on the first null char.
      for (var i = 0; !(i >= maxBytesToRead / 2); ++i) {
        var codeUnit = HEAP16[(((ptr)+(i*2))>>1)];
        if (codeUnit == 0) break;
        // fromCharCode constructs a character from a UTF-16 code unit, so we can pass the UTF16 string right through.
        str += String.fromCharCode(codeUnit);
      }
  
      return str;
    }
  }
  
  // Copies the given Javascript String object 'str' to the emscripten HEAP at address 'outPtr',
  // null-terminated and encoded in UTF16 form. The copy will require at most str.length*4+2 bytes of space in the HEAP.
  // Use the function lengthBytesUTF16() to compute the exact number of bytes (excluding null terminator) that this function will write.
  // Parameters:
  //   str: the Javascript string to copy.
  //   outPtr: Byte address in Emscripten HEAP where to write the string to.
  //   maxBytesToWrite: The maximum number of bytes this function can write to the array. This count should include the null
  //                    terminator, i.e. if maxBytesToWrite=2, only the null terminator will be written and nothing else.
  //                    maxBytesToWrite<2 does not write any bytes to the output, not even the null terminator.
  // Returns the number of bytes written, EXCLUDING the null terminator.
  
  function stringToUTF16(str, outPtr, maxBytesToWrite) {
    assert(outPtr % 2 == 0, 'Pointer passed to stringToUTF16 must be aligned to two bytes!');
    assert(typeof maxBytesToWrite == 'number', 'stringToUTF16(str, outPtr, maxBytesToWrite) is missing the third parameter that specifies the length of the output buffer!');
    // Backwards compatibility: if max bytes is not specified, assume unsafe unbounded write is allowed.
    if (maxBytesToWrite === undefined) {
      maxBytesToWrite = 0x7FFFFFFF;
    }
    if (maxBytesToWrite < 2) return 0;
    maxBytesToWrite -= 2; // Null terminator.
    var startPtr = outPtr;
    var numCharsToWrite = (maxBytesToWrite < str.length*2) ? (maxBytesToWrite / 2) : str.length;
    for (var i = 0; i < numCharsToWrite; ++i) {
      // charCodeAt returns a UTF-16 encoded code unit, so it can be directly written to the HEAP.
      var codeUnit = str.charCodeAt(i); // possibly a lead surrogate
      HEAP16[((outPtr)>>1)]=codeUnit;
      outPtr += 2;
    }
    // Null-terminate the pointer to the HEAP.
    HEAP16[((outPtr)>>1)]=0;
    return outPtr - startPtr;
  }
  
  // Returns the number of bytes the given Javascript string takes if encoded as a UTF16 byte array, EXCLUDING the null terminator byte.
  
  function lengthBytesUTF16(str) {
    return str.length*2;
  }
  
  function UTF32ToString(ptr, maxBytesToRead) {
    assert(ptr % 4 == 0, 'Pointer passed to UTF32ToString must be aligned to four bytes!');
    var i = 0;
  
    var str = '';
    // If maxBytesToRead is not passed explicitly, it will be undefined, and this
    // will always evaluate to true. This saves on code size.
    while (!(i >= maxBytesToRead / 4)) {
      var utf32 = HEAP32[(((ptr)+(i*4))>>2)];
      if (utf32 == 0) break;
      ++i;
      // Gotcha: fromCharCode constructs a character from a UTF-16 encoded code (pair), not from a Unicode code point! So encode the code point to UTF-16 for constructing.
      // See http://unicode.org/faq/utf_bom.html#utf16-3
      if (utf32 >= 0x10000) {
        var ch = utf32 - 0x10000;
        str += String.fromCharCode(0xD800 | (ch >> 10), 0xDC00 | (ch & 0x3FF));
      } else {
        str += String.fromCharCode(utf32);
      }
    }
    return str;
  }
  
  // Copies the given Javascript String object 'str' to the emscripten HEAP at address 'outPtr',
  // null-terminated and encoded in UTF32 form. The copy will require at most str.length*4+4 bytes of space in the HEAP.
  // Use the function lengthBytesUTF32() to compute the exact number of bytes (excluding null terminator) that this function will write.
  // Parameters:
  //   str: the Javascript string to copy.
  //   outPtr: Byte address in Emscripten HEAP where to write the string to.
  //   maxBytesToWrite: The maximum number of bytes this function can write to the array. This count should include the null
  //                    terminator, i.e. if maxBytesToWrite=4, only the null terminator will be written and nothing else.
  //                    maxBytesToWrite<4 does not write any bytes to the output, not even the null terminator.
  // Returns the number of bytes written, EXCLUDING the null terminator.
  
  function stringToUTF32(str, outPtr, maxBytesToWrite) {
    assert(outPtr % 4 == 0, 'Pointer passed to stringToUTF32 must be aligned to four bytes!');
    assert(typeof maxBytesToWrite == 'number', 'stringToUTF32(str, outPtr, maxBytesToWrite) is missing the third parameter that specifies the length of the output buffer!');
    // Backwards compatibility: if max bytes is not specified, assume unsafe unbounded write is allowed.
    if (maxBytesToWrite === undefined) {
      maxBytesToWrite = 0x7FFFFFFF;
    }
    if (maxBytesToWrite < 4) return 0;
    var startPtr = outPtr;
    var endPtr = startPtr + maxBytesToWrite - 4;
    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! We must decode the string to UTF-32 to the heap.
      // See http://unicode.org/faq/utf_bom.html#utf16-3
      var codeUnit = str.charCodeAt(i); // possibly a lead surrogate
      if (codeUnit >= 0xD800 && codeUnit <= 0xDFFF) {
        var trailSurrogate = str.charCodeAt(++i);
        codeUnit = 0x10000 + ((codeUnit & 0x3FF) << 10) | (trailSurrogate & 0x3FF);
      }
      HEAP32[((outPtr)>>2)]=codeUnit;
      outPtr += 4;
      if (outPtr + 4 > endPtr) break;
    }
    // Null-terminate the pointer to the HEAP.
    HEAP32[((outPtr)>>2)]=0;
    return outPtr - startPtr;
  }
  
  // Returns the number of bytes the given Javascript string takes if encoded as a UTF16 byte array, EXCLUDING the null terminator byte.
  
  function lengthBytesUTF32(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! We must decode the string to UTF-32 to the heap.
      // See http://unicode.org/faq/utf_bom.html#utf16-3
      var codeUnit = str.charCodeAt(i);
      if (codeUnit >= 0xD800 && codeUnit <= 0xDFFF) ++i; // possibly a lead surrogate, so skip over the tail surrogate.
      len += 4;
    }
  
    return len;
  }
  
  // Allocate heap space for a JS string, and write it there.
  // It is the responsibility of the caller to free() that memory.
  function allocateUTF8(str) {
    var size = lengthBytesUTF8(str) + 1;
    var ret = _malloc(size);
    if (ret) stringToUTF8Array(str, HEAP8, ret, size);
    return ret;
  }
  
  // Allocate stack space for a JS string, and write it there.
  function allocateUTF8OnStack(str) {
    var size = lengthBytesUTF8(str) + 1;
    var ret = stackAlloc(size);
    stringToUTF8Array(str, HEAP8, ret, size);
    return ret;
  }
  
  // Deprecated: This function should not be called because it is unsafe and does not provide
  // a maximum length limit of how many bytes it is allowed to write. Prefer calling the
  // function stringToUTF8Array() instead, which takes in a maximum length that can be used
  // to be secure from out of bounds writes.
  /** @deprecated
      @param {boolean=} dontAddNull */
  function writeStringToMemory(string, buffer, dontAddNull) {
    warnOnce('writeStringToMemory is deprecated and should not be called! Use stringToUTF8() instead!');
  
    var /** @type {number} */ lastChar, /** @type {number} */ end;
    if (dontAddNull) {
      // stringToUTF8Array always appends null. If we don't want to do that, remember the
      // character that existed at the location where the null will be placed, and restore
      // that after the write (below).
      end = buffer + lengthBytesUTF8(string);
      lastChar = HEAP8[end];
    }
    stringToUTF8(string, buffer, Infinity);
    if (dontAddNull) HEAP8[end] = lastChar; // Restore the value under the null character.
  }
  
  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);
  }
  
  /** @param {boolean=} dontAddNull */
  function writeAsciiToMemory(str, buffer, dontAddNull) {
    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 pointer to the HEAP.
    if (!dontAddNull) HEAP8[((buffer)>>0)]=0;
  }
  
  // end include: runtime_strings_extra.js
  // Memory management
  
  function alignUp(x, multiple) {
    if (x % multiple > 0) {
      x += multiple - (x % multiple);
    }
    return x;
  }
  
  var HEAP,
  /** @type {ArrayBuffer} */
    buffer,
  /** @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 updateGlobalBufferAndViews(buf) {
    buffer = buf;
    Module['HEAP8'] = HEAP8 = new Int8Array(buf);
    Module['HEAP16'] = HEAP16 = new Int16Array(buf);
    Module['HEAP32'] = HEAP32 = new Int32Array(buf);
    Module['HEAPU8'] = HEAPU8 = new Uint8Array(buf);
    Module['HEAPU16'] = HEAPU16 = new Uint16Array(buf);
    Module['HEAPU32'] = HEAPU32 = new Uint32Array(buf);
    Module['HEAPF32'] = HEAPF32 = new Float32Array(buf);
    Module['HEAPF64'] = HEAPF64 = new Float64Array(buf);
  }
  
  var TOTAL_STACK = 5242880;
  if (Module['TOTAL_STACK']) assert(TOTAL_STACK === Module['TOTAL_STACK'], 'the stack size can no longer be determined at runtime')
  
  var INITIAL_MEMORY = Module['INITIAL_MEMORY'] || 16777216;if (!Object.getOwnPropertyDescriptor(Module, 'INITIAL_MEMORY')) Object.defineProperty(Module, 'INITIAL_MEMORY', { configurable: true, get: function() { abort('Module.INITIAL_MEMORY has been replaced with plain INITIAL_MEMORY (the initial value can be provided on Module, but after startup the value is only looked for on a local variable of that name)') } });
  
  assert(INITIAL_MEMORY >= TOTAL_STACK, 'INITIAL_MEMORY should be larger than TOTAL_STACK, was ' + INITIAL_MEMORY + '! (TOTAL_STACK=' + TOTAL_STACK + ')');
  
  // check for full engine support (use string 'subarray' to avoid closure compiler confusion)
  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.
  assert(!Module['wasmMemory'], 'Use of `wasmMemory` detected.  Use -s IMPORTED_MEMORY to define wasmMemory externally');
  assert(INITIAL_MEMORY == 16777216, 'Detected runtime INITIAL_MEMORY setting.  Use -s IMPORTED_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);
    // The stack grows downwards
    HEAPU32[(max >> 2)+1] = 0x2135467;
    HEAPU32[(max >> 2)+2] = 0x89BACDFE;
    // Also test the global address 0 for integrity.
    HEAP32[0] = 0x63736d65; /* 'emsc' */
  }
  
  function checkStackCookie() {
    if (ABORT) return;
    var max = _emscripten_stack_get_end();
    var cookie1 = HEAPU32[(max >> 2)+1];
    var cookie2 = HEAPU32[(max >> 2)+2];
    if (cookie1 != 0x2135467 || cookie2 != 0x89BACDFE) {
      abort('Stack overflow! Stack cookie has been overwritten, expected hex dwords 0x89BACDFE and 0x2135467, but received 0x' + cookie2.toString(16) + ' ' + cookie1.toString(16));
    }
    // Also test the global address 0 for integrity.
    if (HEAP32[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 (note: assumes compiler arch was little-endian)
  (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!';
  })();
  
  function abortFnPtrError(ptr, sig) {
  	abort("Invalid function pointer " + ptr + " called with signature '" + sig + "'. Perhaps this is an invalid value (e.g. caused by calling a virtual method on a NULL pointer)? Or calling a function with an incorrect type, which will fail? (it is worth building your source files with -Werror (warnings are errors), as warnings can indicate undefined behavior which can cause this). Build with ASSERTIONS=2 for more info.");
  }
  
  // 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 runtimeExited = false;
  
  function preRun() {
  
    if (Module['preRun']) {
      if (typeof Module['preRun'] == 'function') Module['preRun'] = [Module['preRun']];
      while (Module['preRun'].length) {
        addOnPreRun(Module['preRun'].shift());
      }
    }
  
    callRuntimeCallbacks(__ATPRERUN__);
  }
  
  function initRuntime() {
    checkStackCookie();
    assert(!runtimeInitialized);
    runtimeInitialized = true;
    if (!Module["noFSInit"] && !FS.init.initialized) FS.init();
  TTY.init();
    callRuntimeCallbacks(__ATINIT__);
  }
  
  function preMain() {
    checkStackCookie();
    FS.ignorePermissions = false;
    callRuntimeCallbacks(__ATMAIN__);
  }
  
  function exitRuntime() {
    checkStackCookie();
    callRuntimeCallbacks(__ATEXIT__);
    FS.quit();
  TTY.shutdown();
    runtimeExited = true;
  }
  
  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) {
    __ATEXIT__.unshift(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
      }
    }
  }
  
  Module["preloadedImages"] = {}; // maps url to image data
  Module["preloadedAudios"] = {}; // maps url to audio data
  
  /** @param {string|number=} what */
  function abort(what) {
    if (Module['onAbort']) {
      Module['onAbort'](what);
    }
  
    what += '';
    err(what);
  
    ABORT = true;
    EXITSTATUS = 1;
  
    var output = 'abort(' + what + ') at ' + stackTrace();
    what = output;
  
    // 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.
    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;
  }
  
  // {{MEM_INITIALIZER}}
  
  // include: memoryprofiler.js
  
  
  // end include: memoryprofiler.js
  // include: URIUtils.js
  
  
  function hasPrefix(str, prefix) {
    return String.prototype.startsWith ?
        str.startsWith(prefix) :
        str.indexOf(prefix) === 0;
  }
  
  // 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) {
    return hasPrefix(filename, dataURIPrefix);
  }
  
  var fileURIPrefix = "file://";
  
  // Indicates whether filename is delivered via file protocol (as opposed to http/https)
  function isFileURI(filename) {
    return hasPrefix(filename, fileURIPrefix);
  }
  
  // end include: URIUtils.js
  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');
      assert(!runtimeExited, 'native function `' + displayName + '` called after runtime exit (use NO_EXIT_RUNTIME to keep it alive after main() exits)');
      if (!asm[name]) {
        assert(asm[name], 'exported native function `' + displayName + '` not found');
      }
      return asm[name].apply(null, arguments);
    };
  }
  
  var wasmBinaryFile = 'pal2rgb.wasm';
  if (!isDataURI(wasmBinaryFile)) {
    wasmBinaryFile = locateFile(wasmBinaryFile);
  }
  
  function getBinary() {
    try {
      if (wasmBinary) {
        return new Uint8Array(wasmBinary);
      }
  
      if (readBinary) {
        return readBinary(wasmBinaryFile);
      } else {
        throw "both async and sync fetching of the wasm failed";
      }
    }
    catch (err) {
      abort(err);
    }
  }
  
  function getBinaryPromise() {
    // If we don't have the binary yet, and have the Fetch api, use that;
    // in some environments, like Electron's render process, Fetch api may be present, but have a different context than expected, let's only use it on the Web
    if (!wasmBinary && (ENVIRONMENT_IS_WEB || ENVIRONMENT_IS_WORKER) && typeof fetch === 'function'
        // Let's not use fetch to get objects over file:// as it's most likely Cordova which doesn't support fetch for file://
        && !isFileURI(wasmBinaryFile)
        ) {
      return fetch(wasmBinaryFile, { credentials: 'same-origin' }).then(function(response) {
        if (!response['ok']) {
          throw "failed to load wasm binary file at '" + wasmBinaryFile + "'";
        }
        return response['arrayBuffer']();
      }).catch(function () {
        return getBinary();
      });
    }
    // Otherwise, getBinary should be able to get it synchronously
    return Promise.resolve().then(getBinary);
  }
  
  // Create the wasm instance.
  // Receives the wasm imports, returns the exports.
  function createWasm() {
    // prepare imports
    var info = {
      'env': asmLibraryArg,
      'wasi_snapshot_preview1': asmLibraryArg,
    };
    // 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);
      updateGlobalBufferAndViews(wasmMemory.buffer);
  
      wasmTable = Module['asm']['__indirect_function_table'];
      assert(wasmTable, "table not found in wasm exports");
  
      removeRunDependency('wasm-instantiate');
    }
    // we can't run yet (except in a pthread, where we have a custom sync instantiator)
    addRunDependency('wasm-instantiate');
  
    // 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 receiveInstantiatedSource(output) {
      // 'output' is a WebAssemblyInstantiatedSource 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 USE_PTHREADS-enabled path.
      receiveInstance(output['instance']);
    }
  
    function instantiateArrayBuffer(receiver) {
      return getBinaryPromise().then(function(binary) {
        return WebAssembly.instantiate(binary, info);
      }).then(receiver, function(reason) {
        err('failed to asynchronously prepare wasm: ' + reason);
  
        abort(reason);
      });
    }
  
    // Prefer streaming instantiation if available.
    function instantiateAsync() {
      if (!wasmBinary &&
          typeof WebAssembly.instantiateStreaming === 'function' &&
          !isDataURI(wasmBinaryFile) &&
          // Don't use streaming for file:// delivered objects in a webview, fetch them synchronously.
          !isFileURI(wasmBinaryFile) &&
          typeof fetch === 'function') {
        return fetch(wasmBinaryFile, { credentials: 'same-origin' }).then(function (response) {
          var result = WebAssembly.instantiateStreaming(response, info);
          return result.then(receiveInstantiatedSource, 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(receiveInstantiatedSource);
            });
        });
      } else {
        return instantiateArrayBuffer(receiveInstantiatedSource);
      }
    }
    // 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.
    if (Module['instantiateWasm']) {
      try {
        var exports = Module['instantiateWasm'](info, receiveInstance);
        return exports;
      } catch(e) {
        err('Module.instantiateWasm callback failed with error: ' + e);
        return false;
      }
    }
  
    instantiateAsync();
    return {}; // no exports yet; we'll fill them in later
  }
  
  // Globals used by JS i64 conversions
  var tempDouble;
  var tempI64;
  
  // === Body ===
  
  var ASM_CONSTS = {
    
  };
  
  
  
  
  
  
    function abortStackOverflow(allocSize) {
        abort('Stack overflow! Attempted to allocate ' + allocSize + ' bytes on the stack, but stack has only ' + (_emscripten_stack_get_free() + allocSize) + ' bytes available!');
      }
  
    function callRuntimeCallbacks(callbacks) {
        while(callbacks.length > 0) {
          var callback = callbacks.shift();
          if (typeof callback == 'function') {
            callback(Module); // Pass the module as the first argument.
            continue;
          }
          var func = callback.func;
          if (typeof func === 'number') {
            if (callback.arg === undefined) {
              wasmTable.get(func)();
            } else {
              wasmTable.get(func)(callback.arg);
            }
          } else {
            func(callback.arg === undefined ? null : callback.arg);
          }
        }
      }
  
    function demangle(func) {
        warnOnce('warning: build with  -s DEMANGLE_SUPPORT=1  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 + ']');
          });
      }
  
    function jsStackTrace() {
        var error = new Error();
        if (!error.stack) {
          // IE10+ special cases: It does have callstack info, but it is only populated if an Error object is thrown,
          // so try that as a special-case.
          try {
            throw new Error();
          } catch(e) {
            error = e;
          }
          if (!error.stack) {
            return '(no stack trace available)';
          }
        }
        return error.stack.toString();
      }
  
    function stackTrace() {
        var js = jsStackTrace();
        if (Module['extraStackTrace']) js += '\n' + Module['extraStackTrace']();
        return demangleAll(js);
      }
  
    function ___assert_fail(condition, filename, line, func) {
        abort('Assertion failed: ' + UTF8ToString(condition) + ', at: ' + [filename ? UTF8ToString(filename) : 'unknown filename', line, func ? UTF8ToString(func) : 'unknown function']);
      }
  
    var PATH={splitPath:function(filename) {
          var splitPathRe = /^(\/?|)([\s\S]*?)((?:\.{1,2}|[^\/]+?|)(\.[^.\/]*|))(?:[\/]*)$/;
          return splitPathRe.exec(filename).slice(1);
        },normalizeArray:function(parts, allowAboveRoot) {
          // if the path tries to go above the root, `up` ends up > 0
          var up = 0;
          for (var i = parts.length - 1; i >= 0; i--) {
            var last = parts[i];
            if (last === '.') {
              parts.splice(i, 1);
            } else if (last === '..') {
              parts.splice(i, 1);
              up++;
            } else if (up) {
              parts.splice(i, 1);
              up--;
            }
          }
          // if the path is allowed to go above the root, restore leading ..s
          if (allowAboveRoot) {
            for (; up; up--) {
              parts.unshift('..');
            }
          }
          return parts;
        },normalize:function(path) {
          var isAbsolute = path.charAt(0) === '/',
              trailingSlash = path.substr(-1) === '/';
          // Normalize the path
          path = PATH.normalizeArray(path.split('/').filter(function(p) {
            return !!p;
          }), !isAbsolute).join('/');
          if (!path && !isAbsolute) {
            path = '.';
          }
          if (path && trailingSlash) {
            path += '/';
          }
          return (isAbsolute ? '/' : '') + path;
        },dirname:function(path) {
          var result = PATH.splitPath(path),
              root = result[0],
              dir = result[1];
          if (!root && !dir) {
            // No dirname whatsoever
            return '.';
          }
          if (dir) {
            // It has a dirname, strip trailing slash
            dir = dir.substr(0, dir.length - 1);
          }
          return root + dir;
        },basename:function(path) {
          // EMSCRIPTEN return '/'' for '/', not an empty string
          if (path === '/') return '/';
          path = PATH.normalize(path);
          path = path.replace(/\/$/, "");
          var lastSlash = path.lastIndexOf('/');
          if (lastSlash === -1) return path;
          return path.substr(lastSlash+1);
        },extname:function(path) {
          return PATH.splitPath(path)[3];
        },join:function() {
          var paths = Array.prototype.slice.call(arguments, 0);
          return PATH.normalize(paths.join('/'));
        },join2:function(l, r) {
          return PATH.normalize(l + '/' + r);
        }};
    
    function getRandomDevice() {
        if (typeof crypto === 'object' && typeof crypto['getRandomValues'] === 'function') {
          // for modern web browsers
          var randomBuffer = new Uint8Array(1);
          return function() { crypto.getRandomValues(randomBuffer); return randomBuffer[0]; };
        } else
        if (ENVIRONMENT_IS_NODE) {
          // for nodejs with or without crypto support included
          try {
            var crypto_module = require('crypto');
            // nodejs has crypto support
            return function() { return crypto_module['randomBytes'](1)[0]; };
          } 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
        return function() { 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 } };"); };
      }
    
    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.charAt(0) === '/';
          }
          // 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(function(p) {
            return !!p;
          }), !resolvedAbsolute).join('/');
          return ((resolvedAbsolute ? '/' : '') + resolvedPath) || '.';
        },relative:function(from, to) {
          from = PATH_FS.resolve(from).substr(1);
          to = PATH_FS.resolve(to).substr(1);
          function trim(arr) {
            var start = 0;
            for (; start < arr.length; start++) {
              if (arr[start] !== '') break;
            }
            var end = arr.length - 1;
            for (; end >= 0; end--) {
              if (arr[end] !== '') break;
            }
            if (start > end) return [];
            return arr.slice(start, end - start + 1);
          }
          var fromParts = trim(from.split('/'));
          var toParts = trim(to.split('/'));
          var length = Math.min(fromParts.length, toParts.length);
          var samePartsLength = length;
          for (var i = 0; i < length; i++) {
            if (fromParts[i] !== toParts[i]) {
              samePartsLength = i;
              break;
            }
          }
          var outputParts = [];
          for (var i = samePartsLength; i < fromParts.length; i++) {
            outputParts.push('..');
          }
          outputParts = outputParts.concat(toParts.slice(samePartsLength));
          return outputParts.join('/');
        }};
    
    var 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.flush(stream.tty);
          },flush:function(stream) {
            stream.tty.ops.flush(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 ? Buffer.alloc(BUFSIZE) : new Buffer(BUFSIZE);
                var bytesRead = 0;
    
                try {
                  bytesRead = nodeFS.readSync(process.stdin.fd, buf, 0, BUFSIZE, null);
                } 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().indexOf('EOF') != -1) 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.
            }
          },flush: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);
            }
          },flush:function(tty) {
            if (tty.output && tty.output.length > 0) {
              err(UTF8ArrayToString(tty.output, 0));
              tty.output = [];
            }
          }}};
    
    function mmapAlloc(size) {
        var alignedSize = alignMemory(size, 16384);
        var ptr = _malloc(alignedSize);
        while (size < alignedSize) HEAP8[ptr + size++] = 0;
        return ptr;
      }
    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;
          }
          return node;
        },getFileDataAsRegularArray:function(node) {
          if (node.contents && node.contents.subarray) {
            var arr = [];
            for (var i = 0; i < node.usedBytes; ++i) arr.push(node.contents[i]);
            return arr; // Returns a copy of the original data.
          }
          return node.contents; // No-op, the file contents are already in a JS array. Return as-is.
        },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.
          return;
        },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;
            return;
          }
          if (!node.contents || node.contents.subarray) { // Resize a typed array if that is being used as the backing store.
            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;
            return;
          }
          // Backing with a JS array.
          if (!node.contents) node.contents = [];
          if (node.contents.length > newSize) node.contents.length = newSize;
          else while (node.contents.length < newSize) node.contents.push(0);
          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.name = new_name;
            new_dir.contents[new_name] = old_node;
            old_node.parent = new_dir;
          },unlink:function(parent, name) {
            delete parent.contents[name];
          },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];
          },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 (!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, address, length, position, prot, flags) {
            // We don't currently support location hints for the address of the mapping
            assert(address === 0);
    
            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 === 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) {
            if (!FS.isFile(stream.node.mode)) {
              throw new FS.ErrnoError(43);
            }
            if (mmapFlags & 2) {
              // MAP_PRIVATE calls need not to be synced back to underlying fs
              return 0;
            }
    
            var bytesWritten = MEMFS.stream_ops.write(stream, buffer, 0, length, offset, false);
            // should we check if bytesWritten and length are the same?
            return 0;
          }}};
    
    var ERRNO_CODES={EPERM:63,ENOENT:44,ESRCH:71,EINTR:27,EIO:29,ENXIO:60,E2BIG:1,ENOEXEC:45,EBADF:8,ECHILD:12,EAGAIN:6,EWOULDBLOCK:6,ENOMEM:48,EACCES:2,EFAULT:21,ENOTBLK:105,EBUSY:10,EEXIST:20,EXDEV:75,ENODEV:43,ENOTDIR:54,EISDIR:31,EINVAL:28,ENFILE:41,EMFILE:33,ENOTTY:59,ETXTBSY:74,EFBIG:22,ENOSPC:51,ESPIPE:70,EROFS:69,EMLINK:34,EPIPE:64,EDOM:18,ERANGE:68,ENOMSG:49,EIDRM:24,ECHRNG:106,EL2NSYNC:156,EL3HLT:107,EL3RST:108,ELNRNG:109,EUNATCH:110,ENOCSI:111,EL2HLT:112,EDEADLK:16,ENOLCK:46,EBADE:113,EBADR:114,EXFULL:115,ENOANO:104,EBADRQC:103,EBADSLT:102,EDEADLOCK:16,EBFONT:101,ENOSTR:100,ENODATA:116,ETIME:117,ENOSR:118,ENONET:119,ENOPKG:120,EREMOTE:121,ENOLINK:47,EADV:122,ESRMNT:123,ECOMM:124,EPROTO:65,EMULTIHOP:36,EDOTDOT:125,EBADMSG:9,ENOTUNIQ:126,EBADFD:127,EREMCHG:128,ELIBACC:129,ELIBBAD:130,ELIBSCN:131,ELIBMAX:132,ELIBEXEC:133,ENOSYS:52,ENOTEMPTY:55,ENAMETOOLONG:37,ELOOP:32,EOPNOTSUPP:138,EPFNOSUPPORT:139,ECONNRESET:15,ENOBUFS:42,EAFNOSUPPORT:5,EPROTOTYPE:67,ENOTSOCK:57,ENOPROTOOPT:50,ESHUTDOWN:140,ECONNREFUSED:14,EADDRINUSE:3,ECONNABORTED:13,ENETUNREACH:40,ENETDOWN:38,ETIMEDOUT:73,EHOSTDOWN:142,EHOSTUNREACH:23,EINPROGRESS:26,EALREADY:7,EDESTADDRREQ:17,EMSGSIZE:35,EPROTONOSUPPORT:66,ESOCKTNOSUPPORT:137,EADDRNOTAVAIL:4,ENETRESET:39,EISCONN:30,ENOTCONN:53,ETOOMANYREFS:141,EUSERS:136,EDQUOT:19,ESTALE:72,ENOTSUP:138,ENOMEDIUM:148,EILSEQ:25,EOVERFLOW:61,ECANCELED:11,ENOTRECOVERABLE:56,EOWNERDEAD:62,ESTRPIPE:135};
    var NODEFS={isWindows:false,staticInit:function() {
          NODEFS.isWindows = !!process.platform.match(/^win/);
          var flags = process["binding"]("constants");
          // Node.js 4 compatibility: it has no namespaces for constants
          if (flags["fs"]) {
            flags = flags["fs"];
          }
          NODEFS.flagsForNodeMap = {
            "1024": flags["O_APPEND"],
            "64": flags["O_CREAT"],
            "128": flags["O_EXCL"],
            "256": flags["O_NOCTTY"],
            "0": flags["O_RDONLY"],
            "2": flags["O_RDWR"],
            "4096": flags["O_SYNC"],
            "512": flags["O_TRUNC"],
            "1": flags["O_WRONLY"]
          };
        },bufferFrom:function (arrayBuffer) {
          // Node.js < 4.5 compatibility: Buffer.from does not support ArrayBuffer
          // Buffer.from before 4.5 was just a method inherited from Uint8Array
          // Buffer.alloc has been added with Buffer.from together, so check it instead
          return Buffer["alloc"] ? Buffer.from(arrayBuffer) : new Buffer(arrayBuffer);
        },convertNodeCode:function(e) {
          var code = e.code;
          assert(code in ERRNO_CODES);
          return ERRNO_CODES[code];
        },mount:function (mount) {
          assert(ENVIRONMENT_IS_NODE);
          return NODEFS.createNode(null, '/', NODEFS.getMode(mount.opts.root), 0);
        },createNode:function (parent, name, mode, dev) {
          if (!FS.isDir(mode) && !FS.isFile(mode) && !FS.isLink(mode)) {
            throw new FS.ErrnoError(28);
          }
          var node = FS.createNode(parent, name, mode);
          node.node_ops = NODEFS.node_ops;
          node.stream_ops = NODEFS.stream_ops;
          return node;
        },getMode:function (path) {
          var stat;
          try {
            stat = fs.lstatSync(path);
            if (NODEFS.isWindows) {
              // Node.js on Windows never represents permission bit 'x', so
              // propagate read bits to execute bits
              stat.mode = stat.mode | ((stat.mode & 292) >> 2);
            }
          } catch (e) {
            if (!e.code) throw e;
            throw new FS.ErrnoError(NODEFS.convertNodeCode(e));
          }
          return stat.mode;
        },realPath:function (node) {
          var parts = [];
          while (node.parent !== node) {
            parts.push(node.name);
            node = node.parent;
          }
          parts.push(node.mount.opts.root);
          parts.reverse();
          return PATH.join.apply(null, parts);
        },flagsForNode:function(flags) {
          flags &= ~0x200000 /*O_PATH*/; // Ignore this flag from musl, otherwise node.js fails to open the file.
          flags &= ~0x800 /*O_NONBLOCK*/; // Ignore this flag from musl, otherwise node.js fails to open the file.
          flags &= ~0x8000 /*O_LARGEFILE*/; // Ignore this flag from musl, otherwise node.js fails to open the file.
          flags &= ~0x80000 /*O_CLOEXEC*/; // Some applications may pass it; it makes no sense for a single process.
          var newFlags = 0;
          for (var k in NODEFS.flagsForNodeMap) {
            if (flags & k) {
              newFlags |= NODEFS.flagsForNodeMap[k];
              flags ^= k;
            }
          }
    
          if (!flags) {
            return newFlags;
          } else {
            throw new FS.ErrnoError(28);
          }
        },node_ops:{getattr:function(node) {
            var path = NODEFS.realPath(node);
            var stat;
            try {
              stat = fs.lstatSync(path);
            } catch (e) {
              if (!e.code) throw e;
              throw new FS.ErrnoError(NODEFS.convertNodeCode(e));
            }
            // node.js v0.10.20 doesn't report blksize and blocks on Windows. Fake them with default blksize of 4096.
            // See http://support.microsoft.com/kb/140365
            if (NODEFS.isWindows && !stat.blksize) {
              stat.blksize = 4096;
            }
            if (NODEFS.isWindows && !stat.blocks) {
              stat.blocks = (stat.size+stat.blksize-1)/stat.blksize|0;
            }
            return {
              dev: stat.dev,
              ino: stat.ino,
              mode: stat.mode,
              nlink: stat.nlink,
              uid: stat.uid,
              gid: stat.gid,
              rdev: stat.rdev,
              size: stat.size,
              atime: stat.atime,
              mtime: stat.mtime,
              ctime: stat.ctime,
              blksize: stat.blksize,
              blocks: stat.blocks
            };
          },setattr:function(node, attr) {
            var path = NODEFS.realPath(node);
            try {
              if (attr.mode !== undefined) {
                fs.chmodSync(path, attr.mode);
                // update the common node structure mode as well
                node.mode = attr.mode;
              }
              if (attr.timestamp !== undefined) {
                var date = new Date(attr.timestamp);
                fs.utimesSync(path, date, date);
              }
              if (attr.size !== undefined) {
                fs.truncateSync(path, attr.size);
              }
            } catch (e) {
              if (!e.code) throw e;
              throw new FS.ErrnoError(NODEFS.convertNodeCode(e));
            }
          },lookup:function (parent, name) {
            var path = PATH.join2(NODEFS.realPath(parent), name);
            var mode = NODEFS.getMode(path);
            return NODEFS.createNode(parent, name, mode);
          },mknod:function (parent, name, mode, dev) {
            var node = NODEFS.createNode(parent, name, mode, dev);
            // create the backing node for this in the fs root as well
            var path = NODEFS.realPath(node);
            try {
              if (FS.isDir(node.mode)) {
                fs.mkdirSync(path, node.mode);
              } else {
                fs.writeFileSync(path, '', { mode: node.mode });
              }
            } catch (e) {
              if (!e.code) throw e;
              throw new FS.ErrnoError(NODEFS.convertNodeCode(e));
            }
            return node;
          },rename:function (oldNode, newDir, newName) {
            var oldPath = NODEFS.realPath(oldNode);
            var newPath = PATH.join2(NODEFS.realPath(newDir), newName);
            try {
              fs.renameSync(oldPath, newPath);
            } catch (e) {
              if (!e.code) throw e;
              throw new FS.ErrnoError(NODEFS.convertNodeCode(e));
            }
            oldNode.name = newName;
          },unlink:function(parent, name) {
            var path = PATH.join2(NODEFS.realPath(parent), name);
            try {
              fs.unlinkSync(path);
            } catch (e) {
              if (!e.code) throw e;
              throw new FS.ErrnoError(NODEFS.convertNodeCode(e));
            }
          },rmdir:function(parent, name) {
            var path = PATH.join2(NODEFS.realPath(parent), name);
            try {
              fs.rmdirSync(path);
            } catch (e) {
              if (!e.code) throw e;
              throw new FS.ErrnoError(NODEFS.convertNodeCode(e));
            }
          },readdir:function(node) {
            var path = NODEFS.realPath(node);
            try {
              return fs.readdirSync(path);
            } catch (e) {
              if (!e.code) throw e;
              throw new FS.ErrnoError(NODEFS.convertNodeCode(e));
            }
          },symlink:function(parent, newName, oldPath) {
            var newPath = PATH.join2(NODEFS.realPath(parent), newName);
            try {
              fs.symlinkSync(oldPath, newPath);
            } catch (e) {
              if (!e.code) throw e;
              throw new FS.ErrnoError(NODEFS.convertNodeCode(e));
            }
          },readlink:function(node) {
            var path = NODEFS.realPath(node);
            try {
              path = fs.readlinkSync(path);
              path = NODEJS_PATH.relative(NODEJS_PATH.resolve(node.mount.opts.root), path);
              return path;
            } catch (e) {
              if (!e.code) throw e;
              throw new FS.ErrnoError(NODEFS.convertNodeCode(e));
            }
          }},stream_ops:{open:function (stream) {
            var path = NODEFS.realPath(stream.node);
            try {
              if (FS.isFile(stream.node.mode)) {
                stream.nfd = fs.openSync(path, NODEFS.flagsForNode(stream.flags));
              }
            } catch (e) {
              if (!e.code) throw e;
              throw new FS.ErrnoError(NODEFS.convertNodeCode(e));
            }
          },close:function (stream) {
            try {
              if (FS.isFile(stream.node.mode) && stream.nfd) {
                fs.closeSync(stream.nfd);
              }
            } catch (e) {
              if (!e.code) throw e;
              throw new FS.ErrnoError(NODEFS.convertNodeCode(e));
            }
          },read:function (stream, buffer, offset, length, position) {
            // Node.js < 6 compatibility: node errors on 0 length reads
            if (length === 0) return 0;
            try {
              return fs.readSync(stream.nfd, NODEFS.bufferFrom(buffer.buffer), offset, length, position);
            } catch (e) {
              throw new FS.ErrnoError(NODEFS.convertNodeCode(e));
            }
          },write:function (stream, buffer, offset, length, position) {
            try {
              return fs.writeSync(stream.nfd, NODEFS.bufferFrom(buffer.buffer), offset, length, position);
            } catch (e) {
              throw new FS.ErrnoError(NODEFS.convertNodeCode(e));
            }
          },llseek:function (stream, offset, whence) {
            var position = offset;
            if (whence === 1) {
              position += stream.position;
            } else if (whence === 2) {
              if (FS.isFile(stream.node.mode)) {
                try {
                  var stat = fs.fstatSync(stream.nfd);
                  position += stat.size;
                } catch (e) {
                  throw new FS.ErrnoError(NODEFS.convertNodeCode(e));
                }
              }
            }
    
            if (position < 0) {
              throw new FS.ErrnoError(28);
            }
    
            return position;
          },mmap:function(stream, address, length, position, prot, flags) {
            // We don't currently support location hints for the address of the mapping
            assert(address === 0);
    
            if (!FS.isFile(stream.node.mode)) {
              throw new FS.ErrnoError(43);
            }
    
            var ptr = mmapAlloc(length);
    
            NODEFS.stream_ops.read(stream, HEAP8, ptr, length, position);
            return { ptr: ptr, allocated: true };
          },msync:function(stream, buffer, offset, length, mmapFlags) {
            if (!FS.isFile(stream.node.mode)) {
              throw new FS.ErrnoError(43);
            }
            if (mmapFlags & 2) {
              // MAP_PRIVATE calls need not to be synced back to underlying fs
              return 0;
            }
    
            var bytesWritten = NODEFS.stream_ops.write(stream, buffer, 0, length, offset, false);
            return 0;
          }}};
    
    var NODERAWFS={lookupPath:function(path) {
          return { path: path, node: { mode: NODEFS.getMode(path) } };
        },createStandardStreams:function() {
          FS.streams[0] = { fd: 0, nfd: 0, position: 0, path: '', flags: 0, tty: true, seekable: false };
          for (var i = 1; i < 3; i++) {
            FS.streams[i] = { fd: i, nfd: i, position: 0, path: '', flags: 577, tty: true, seekable: false };
          }
        },cwd:function() { return process.cwd(); },chdir:function() { process.chdir.apply(void 0, arguments); },mknod:function(path, mode) {
          if (FS.isDir(path)) {
            fs.mkdirSync(path, mode);
          } else {
            fs.writeFileSync(path, '', { mode: mode });
          }
        },mkdir:function() { fs.mkdirSync.apply(void 0, arguments); },symlink:function() { fs.symlinkSync.apply(void 0, arguments); },rename:function() { fs.renameSync.apply(void 0, arguments); },rmdir:function() { fs.rmdirSync.apply(void 0, arguments); },readdir:function() { fs.readdirSync.apply(void 0, arguments); },unlink:function() { fs.unlinkSync.apply(void 0, arguments); },readlink:function() { return fs.readlinkSync.apply(void 0, arguments); },stat:function() { return fs.statSync.apply(void 0, arguments); },lstat:function() { return fs.lstatSync.apply(void 0, arguments); },chmod:function() { fs.chmodSync.apply(void 0, arguments); },fchmod:function() { fs.fchmodSync.apply(void 0, arguments); },chown:function() { fs.chownSync.apply(void 0, arguments); },fchown:function() { fs.fchownSync.apply(void 0, arguments); },truncate:function() { fs.truncateSync.apply(void 0, arguments); },ftruncate:function(fd, len) {
          // See https://github.com/nodejs/node/issues/35632
          if (len < 0) {
            throw new FS.ErrnoError(28);
          }
          fs.ftruncateSync.apply(void 0, arguments);
        },utime:function() { fs.utimesSync.apply(void 0, arguments); },open:function(path, flags, mode, suggestFD) {
          if (typeof flags === "string") {
            flags = VFS.modeStringToFlags(flags)
          }
          var nfd = fs.openSync(path, NODEFS.flagsForNode(flags), mode);
          var fd = suggestFD != null ? suggestFD : FS.nextfd(nfd);
          var stream = { fd: fd, nfd: nfd, position: 0, path: path, flags: flags, seekable: true };
          FS.streams[fd] = stream;
          return stream;
        },close:function(stream) {
          if (!stream.stream_ops) {
            // this stream is created by in-memory filesystem
            fs.closeSync(stream.nfd);
          }
          FS.closeStream(stream.fd);
        },llseek:function(stream, offset, whence) {
          if (stream.stream_ops) {
            // this stream is created by in-memory filesystem
            return VFS.llseek(stream, offset, whence);
          }
          var position = offset;
          if (whence === 1) {
            position += stream.position;
          } else if (whence === 2) {
            position += fs.fstatSync(stream.nfd).size;
          } else if (whence !== 0) {
            throw new FS.ErrnoError(ERRNO_CODES.EINVAL);
          }
    
          if (position < 0) {
            throw new FS.ErrnoError(ERRNO_CODES.EINVAL);
          }
          stream.position = position;
          return position;
        },read:function(stream, buffer, offset, length, position) {
          if (stream.stream_ops) {
            // this stream is created by in-memory filesystem
            return VFS.read(stream, buffer, offset, length, position);
          }
          var seeking = typeof position !== 'undefined';
          if (!seeking && stream.seekable) position = stream.position;
          var bytesRead = fs.readSync(stream.nfd, NODEFS.bufferFrom(buffer.buffer), offset, length, position);
          // update position marker when non-seeking
          if (!seeking) stream.position += bytesRead;
          return bytesRead;
        },write:function(stream, buffer, offset, length, position) {
          if (stream.stream_ops) {
            // this stream is created by in-memory filesystem
            return VFS.write(stream, buffer, offset, length, position);
          }
          if (stream.flags & +"1024") {
            // seek to the end before writing in append mode
            FS.llseek(stream, 0, +"2");
          }
          var seeking = typeof position !== 'undefined';
          if (!seeking && stream.seekable) position = stream.position;
          var bytesWritten = fs.writeSync(stream.nfd, NODEFS.bufferFrom(buffer.buffer), offset, length, position);
          // update position marker when non-seeking
          if (!seeking) stream.position += bytesWritten;
          return bytesWritten;
        },allocate:function() {
          throw new FS.ErrnoError(ERRNO_CODES.EOPNOTSUPP);
        },mmap:function() {
          throw new FS.ErrnoError(ERRNO_CODES.ENODEV);
        },msync:function() {
          return 0;
        },munmap:function() {
          return 0;
        },ioctl:function() {
          throw new FS.ErrnoError(ERRNO_CODES.ENOTTY);
        }};
    
    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 FS={root:null,mounts:[],devices:{},streams:[],nextInode:1,nameTable:null,currentPath:"/",initialized:false,ignorePermissions:true,trackingDelegate:{},tracking:{openFlags:{READ:1,WRITE:2}},ErrnoError:null,genericErrors:{},filesystems:null,syncFSRequests:0,lookupPath:function(path, opts) {
          path = PATH_FS.resolve(FS.cwd(), path);
          opts = opts || {};
    
          if (!path) return { path: '', node: null };
    
          var defaults = {
            follow_mount: true,
            recurse_count: 0
          };
          for (var key in defaults) {
            if (opts[key] === undefined) {
              opts[key] = defaults[key];
            }
          }
    
          if (opts.recurse_count > 8) {  // max recursive lookup of 8
            throw new FS.ErrnoError(32);
          }
    
          // split the path
          var parts = PATH.normalizeArray(path.split('/').filter(function(p) {
            return !!p;
          }), false);
    
          // 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 });
                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:function(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:function(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:function(node) {
          var hash = FS.hashName(node.parent.id, node.name);
          node.name_next = FS.nameTable[hash];
          FS.nameTable[hash] = node;
        },hashRemoveNode:function(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:function(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:function(parent, name, mode, rdev) {
          var node = new FS.FSNode(parent, name, mode, rdev);
    
          FS.hashAddNode(node);
    
          return node;
        },destroyNode:function(node) {
          FS.hashRemoveNode(node);
        },isRoot:function(node) {
          return node === node.parent;
        },isMountpoint:function(node) {
          return !!node.mounted;
        },isFile:function(mode) {
          return (mode & 61440) === 32768;
        },isDir:function(mode) {
          return (mode & 61440) === 16384;
        },isLink:function(mode) {
          return (mode & 61440) === 40960;
        },isChrdev:function(mode) {
          return (mode & 61440) === 8192;
        },isBlkdev:function(mode) {
          return (mode & 61440) === 24576;
        },isFIFO:function(mode) {
          return (mode & 61440) === 4096;
        },isSocket:function(mode) {
          return (mode & 49152) === 49152;
        },flagModes:{"r":0,"r+":2,"w":577,"w+":578,"a":1089,"a+":1090},modeStringToFlags:function(str) {
          var flags = FS.flagModes[str];
          if (typeof flags === 'undefined') {
            throw new Error('Unknown file open mode: ' + str);
          }
          return flags;
        },flagsToPermissionString:function(flag) {
          var perms = ['r', 'w', 'rw'][flag & 3];
          if ((flag & 512)) {
            perms += 'w';
          }
          return perms;
        },nodePermissions:function(node, perms) {
          if (FS.ignorePermissions) {
            return 0;
          }
          // return 0 if any user, group or owner bits are set.
          if (perms.indexOf('r') !== -1 && !(node.mode & 292)) {
            return 2;
          } else if (perms.indexOf('w') !== -1 && !(node.mode & 146)) {
            return 2;
          } else if (perms.indexOf('x') !== -1 && !(node.mode & 73)) {
            return 2;
          }
          return 0;
        },mayLookup:function(dir) {
          var errCode = FS.nodePermissions(dir, 'x');
          if (errCode) return errCode;
          if (!dir.node_ops.lookup) return 2;
          return 0;
        },mayCreate:function(dir, name) {
          try {
            var node = FS.lookupNode(dir, name);
            return 20;
          } catch (e) {
          }
          return FS.nodePermissions(dir, 'wx');
        },mayDelete:function(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:function(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:function(fd_start, fd_end) {
          fd_start = fd_start || 0;
          fd_end = 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:function(fd) {
          return FS.streams[fd];
        },createStream:function(stream, fd_start, fd_end) {
          if (!FS.FSStream) {
            FS.FSStream = /** @constructor */ function(){};
            FS.FSStream.prototype = {
              object: {
                get: function() { return this.node; },
                set: function(val) { this.node = val; }
              },
              isRead: {
                get: function() { return (this.flags & 2097155) !== 1; }
              },
              isWrite: {
                get: function() { return (this.flags & 2097155) !== 0; }
              },
              isAppend: {
                get: function() { return (this.flags & 1024); }
              }
            };
          }
          // clone it, so we can return an instance of FSStream
          var newStream = new FS.FSStream();
          for (var p in stream) {
            newStream[p] = stream[p];
          }
          stream = newStream;
          var fd = FS.nextfd(fd_start, fd_end);
          stream.fd = fd;
          FS.streams[fd] = stream;
          return stream;
        },closeStream:function(fd) {
          FS.streams[fd] = null;
        },chrdev_stream_ops:{open:function(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:function() {
            throw new FS.ErrnoError(70);
          }},major:function(dev) {
          return ((dev) >> 8);
        },minor:function(dev) {
          return ((dev) & 0xff);
        },makedev:function(ma, mi) {
          return ((ma) << 8 | (mi));
        },registerDevice:function(dev, ops) {
          FS.devices[dev] = { stream_ops: ops };
        },getDevice:function(dev) {
          return FS.devices[dev];
        },getMounts:function(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:function(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(function (mount) {
            if (!mount.type.syncfs) {
              return done(null);
            }
            mount.type.syncfs(mount, populate, done);
          });
        },mount:function(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:function (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(function (hash) {
            var current = FS.nameTable[hash];
    
            while (current) {
              var next = current.name_next;
    
              if (mounts.indexOf(current.mount) !== -1) {
                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:function(parent, name) {
          return parent.node_ops.lookup(parent, name);
        },mknod:function(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:function(path, mode) {
          mode = mode !== undefined ? mode : 438 /* 0666 */;
          mode &= 4095;
          mode |= 32768;
          return FS.mknod(path, mode, 0);
        },mkdir:function(path, mode) {
          mode = mode !== undefined ? mode : 511 /* 0777 */;
          mode &= 511 | 512;
          mode |= 16384;
          return FS.mknod(path, mode, 0);
        },mkdirTree:function(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:function(path, mode, dev) {
          if (typeof(dev) === 'undefined') {
            dev = mode;
            mode = 438 /* 0666 */;
          }
          mode |= 8192;
          return FS.mknod(path, mode, dev);
        },symlink:function(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:function(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);
            }
          }
          try {
            if (FS.trackingDelegate['willMovePath']) {
              FS.trackingDelegate['willMovePath'](old_path, new_path);
            }
          } catch(e) {
            err("FS.trackingDelegate['willMovePath']('"+old_path+"', '"+new_path+"') threw an exception: " + e.message);
          }
          // 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);
          }
          try {
            if (FS.trackingDelegate['onMovePath']) FS.trackingDelegate['onMovePath'](old_path, new_path);
          } catch(e) {
            err("FS.trackingDelegate['onMovePath']('"+old_path+"', '"+new_path+"') threw an exception: " + e.message);
          }
        },rmdir:function(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);
          }
          try {
            if (FS.trackingDelegate['willDeletePath']) {
              FS.trackingDelegate['willDeletePath'](path);
            }
          } catch(e) {
            err("FS.trackingDelegate['willDeletePath']('"+path+"') threw an exception: " + e.message);
          }
          parent.node_ops.rmdir(parent, name);
          FS.destroyNode(node);
          try {
            if (FS.trackingDelegate['onDeletePath']) FS.trackingDelegate['onDeletePath'](path);
          } catch(e) {
            err("FS.trackingDelegate['onDeletePath']('"+path+"') threw an exception: " + e.message);
          }
        },readdir:function(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:function(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, 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);
          }
          try {
            if (FS.trackingDelegate['willDeletePath']) {
              FS.trackingDelegate['willDeletePath'](path);
            }
          } catch(e) {
            err("FS.trackingDelegate['willDeletePath']('"+path+"') threw an exception: " + e.message);
          }
          parent.node_ops.unlink(parent, name);
          FS.destroyNode(node);
          try {
            if (FS.trackingDelegate['onDeletePath']) FS.trackingDelegate['onDeletePath'](path);
          } catch(e) {
            err("FS.trackingDelegate['onDeletePath']('"+path+"') threw an exception: " + e.message);
          }
        },readlink:function(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:function(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:function(path) {
          return FS.stat(path, true);
        },chmod:function(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:function(path, mode) {
          FS.chmod(path, mode, true);
        },fchmod:function(fd, mode) {
          var stream = FS.getStream(fd);
          if (!stream) {
            throw new FS.ErrnoError(8);
          }
          FS.chmod(stream.node, mode);
        },chown:function(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:function(path, uid, gid) {
          FS.chown(path, uid, gid, true);
        },fchown:function(fd, uid, gid) {
          var stream = FS.getStream(fd);
          if (!stream) {
            throw new FS.ErrnoError(8);
          }
          FS.chown(stream.node, uid, gid);
        },truncate:function(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:function(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:function(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:function(path, flags, mode, fd_start, fd_end) {
          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)) {
            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
          }, fd_start, fd_end);
          // 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;
              err("FS.trackingDelegate error on read file: " + path);
            }
          }
          try {
            if (FS.trackingDelegate['onOpenFile']) {
              var trackingFlags = 0;
              if ((flags & 2097155) !== 1) {
                trackingFlags |= FS.tracking.openFlags.READ;
              }
              if ((flags & 2097155) !== 0) {
                trackingFlags |= FS.tracking.openFlags.WRITE;
              }
              FS.trackingDelegate['onOpenFile'](path, trackingFlags);
            }
          } catch(e) {
            err("FS.trackingDelegate['onOpenFile']('"+path+"', flags) threw an exception: " + e.message);
          }
          return stream;
        },close:function(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:function(stream) {
          return stream.fd === null;
        },llseek:function(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:function(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:function(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;
          try {
            if (stream.path && FS.trackingDelegate['onWriteToFile']) FS.trackingDelegate['onWriteToFile'](stream.path);
          } catch(e) {
            err("FS.trackingDelegate['onWriteToFile']('"+stream.path+"') threw an exception: " + e.message);
          }
          return bytesWritten;
        },allocate:function(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:function(stream, address, 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, address, length, position, prot, flags);
        },msync:function(stream, buffer, offset, length, mmapFlags) {
          if (!stream || !stream.stream_ops.msync) {
            return 0;
          }
          return stream.stream_ops.msync(stream, buffer, offset, length, mmapFlags);
        },munmap:function(stream) {
          return 0;
        },ioctl:function(stream, cmd, arg) {
          if (!stream.stream_ops.ioctl) {
            throw new FS.ErrnoError(59);
          }
          return stream.stream_ops.ioctl(stream, cmd, arg);
        },readFile:function(path, opts) {
          opts = 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:function(path, data, opts) {
          opts = 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:function() {
          return FS.currentPath;
        },chdir:function(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:function() {
          FS.mkdir('/tmp');
          FS.mkdir('/home');
          FS.mkdir('/home/web_user');
        },createDefaultDevices:function() {
          // create /dev
          FS.mkdir('/dev');
          // setup /dev/null
          FS.registerDevice(FS.makedev(1, 3), {
            read: function() { return 0; },
            write: function(stream, buffer, offset, length, pos) { return 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
          var random_device = getRandomDevice();
          FS.createDevice('/dev', 'random', random_device);
          FS.createDevice('/dev', 'urandom', random_device);
          // 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:function() {
          // 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');
          FS.mkdir('/proc/self');
          FS.mkdir('/proc/self/fd');
          FS.mount({
            mount: function() {
              var node = FS.createNode('/proc/self', 'fd', 16384 | 511 /* 0777 */, 73);
              node.node_ops = {
                lookup: function(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: function() { return stream.path } }
                  };
                  ret.parent = ret; // make it look like a simple root node
                  return ret;
                }
              };
              return node;
            }
          }, {}, '/proc/self/fd');
        },createStandardStreams:function() {
          // 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:function() {
          if (FS.ErrnoError) return;
          FS.ErrnoError = /** @this{Object} */ function ErrnoError(errno, node) {
            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(function(code) {
            FS.genericErrors[code] = new FS.ErrnoError(code);
            FS.genericErrors[code].stack = '<generic error, no stack>';
          });
        },staticInit:function() {
          FS.ensureErrnoError();
    
          FS.nameTable = new Array(4096);
    
          FS.mount(MEMFS, {}, '/');
    
          FS.createDefaultDirectories();
          FS.createDefaultDevices();
          FS.createSpecialDirectories();
    
          FS.filesystems = {
            'MEMFS': MEMFS,
            'NODEFS': NODEFS,
          };
        },init:function(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:function() {
          FS.init.initialized = false;
          // force-flush all streams, so we get musl std streams printed out
          var fflush = Module['_fflush'];
          if (fflush) 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:function(canRead, canWrite) {
          var mode = 0;
          if (canRead) mode |= 292 | 73;
          if (canWrite) mode |= 146;
          return mode;
        },findObject:function(path, dontResolveLastLink) {
          var ret = FS.analyzePath(path, dontResolveLastLink);
          if (ret.exists) {
            return ret.object;
          } else {
            return null;
          }
        },analyzePath:function(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:function(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:function(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:function(parent, name, data, canRead, canWrite, canOwn) {
          var path = name ? PATH.join2(typeof parent === 'string' ? parent : FS.getPath(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:function(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: function(stream) {
              stream.seekable = false;
            },
            close: function(stream) {
              // flush any pending line data
              if (output && output.buffer && output.buffer.length) {
                output(10);
              }
            },
            read: function(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: function(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:function(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:function(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 = (function(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.
              if (typeof Uint8Array != 'undefined') 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 || []));
              } else {
                return intArrayFromString(xhr.responseText || '', true);
              }
            });
            var lazyArray = this;
            lazyArray.setDataGetter(function(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(function(key) {
            var fn = node.stream_ops[key];
            stream_ops[key] = function forceLoadLazyFile() {
              FS.forceLoadFile(node);
              return fn.apply(null, arguments);
            };
          });
          // use a custom read function
          stream_ops.read = function stream_ops_read(stream, buffer, offset, length, position) {
            FS.forceLoadFile(node);
            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;
          };
          node.stream_ops = stream_ops;
          return node;
        },createPreloadedFile:function(parent, name, url, canRead, canWrite, onload, onerror, dontCreateFile, canOwn, preFinish) {
          Browser.init(); // XXX perhaps this method should move onto Browser?
          // 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);
            }
            var handled = false;
            Module['preloadPlugins'].forEach(function(plugin) {
              if (handled) return;
              if (plugin['canHandle'](fullname)) {
                plugin['handle'](byteArray, fullname, finish, function() {
                  if (onerror) onerror();
                  removeRunDependency(dep);
                });
                handled = true;
              }
            });
            if (!handled) finish(byteArray);
          }
          addRunDependency(dep);
          if (typeof url == 'string') {
            Browser.asyncLoad(url, function(byteArray) {
              processData(byteArray);
            }, onerror);
          } else {
            processData(url);
          }
        },indexedDB:function() {
          return window.indexedDB || window.mozIndexedDB || window.webkitIndexedDB || window.msIndexedDB;
        },DB_NAME:function() {
          return 'EM_FS_' + window.location.pathname;
        },DB_VERSION:20,DB_STORE_NAME:"FILE_DATA",saveFilesToDB:function(paths, onload, onerror) {
          onload = onload || function(){};
          onerror = onerror || function(){};
          var indexedDB = FS.indexedDB();
          try {
            var openRequest = indexedDB.open(FS.DB_NAME(), FS.DB_VERSION);
          } catch (e) {
            return onerror(e);
          }
          openRequest.onupgradeneeded = function openRequest_onupgradeneeded() {
            out('creating db');
            var db = openRequest.result;
            db.createObjectStore(FS.DB_STORE_NAME);
          };
          openRequest.onsuccess = function openRequest_onsuccess() {
            var db = openRequest.result;
            var transaction = db.transaction([FS.DB_STORE_NAME], 'readwrite');
            var files = transaction.objectStore(FS.DB_STORE_NAME);
            var ok = 0, fail = 0, total = paths.length;
            function finish() {
              if (fail == 0) onload(); else onerror();
            }
            paths.forEach(function(path) {
              var putRequest = files.put(FS.analyzePath(path).object.contents, path);
              putRequest.onsuccess = function putRequest_onsuccess() { ok++; if (ok + fail == total) finish() };
              putRequest.onerror = function putRequest_onerror() { fail++; if (ok + fail == total) finish() };
            });
            transaction.onerror = onerror;
          };
          openRequest.onerror = onerror;
        },loadFilesFromDB:function(paths, onload, onerror) {
          onload = onload || function(){};
          onerror = onerror || function(){};
          var indexedDB = FS.indexedDB();
          try {
            var openRequest = indexedDB.open(FS.DB_NAME(), FS.DB_VERSION);
          } catch (e) {
            return onerror(e);
          }
          openRequest.onupgradeneeded = onerror; // no database to load from
          openRequest.onsuccess = function openRequest_onsuccess() {
            var db = openRequest.result;
            try {
              var transaction = db.transaction([FS.DB_STORE_NAME], 'readonly');
            } catch(e) {
              onerror(e);
              return;
            }
            var files = transaction.objectStore(FS.DB_STORE_NAME);
            var ok = 0, fail = 0, total = paths.length;
            function finish() {
              if (fail == 0) onload(); else onerror();
            }
            paths.forEach(function(path) {
              var getRequest = files.get(path);
              getRequest.onsuccess = function getRequest_onsuccess() {
                if (FS.analyzePath(path).exists) {
                  FS.unlink(path);
                }
                FS.createDataFile(PATH.dirname(path), PATH.basename(path), getRequest.result, true, true, true);
                ok++;
                if (ok + fail == total) finish();
              };
              getRequest.onerror = function getRequest_onerror() { fail++; if (ok + fail == total) finish() };
            });
            transaction.onerror = onerror;
          };
          openRequest.onerror = onerror;
        },absolutePath:function() {
          abort('FS.absolutePath has been removed; use PATH_FS.resolve instead');
        },createFolder:function() {
          abort('FS.createFolder has been removed; use FS.mkdir instead');
        },createLink:function() {
          abort('FS.createLink has been removed; use FS.symlink instead');
        },joinPath:function() {
          abort('FS.joinPath has been removed; use PATH.join instead');
        },mmapAlloc:function() {
          abort('FS.mmapAlloc has been replaced by the top level function mmapAlloc');
        },standardizePath:function() {
          abort('FS.standardizePath has been removed; use PATH.normalize instead');
        }};
    var SYSCALLS={mappings:{},DEFAULT_POLLMASK:5,umask:511,calculateAt:function(dirfd, path) {
          if (path[0] !== '/') {
            // relative path
            var dir;
            if (dirfd === -100) {
              dir = FS.cwd();
            } else {
              var dirstream = FS.getStream(dirfd);
              if (!dirstream) throw new FS.ErrnoError(8);
              dir = dirstream.path;
            }
            path = PATH.join2(dir, path);
          }
          return 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)+(4))>>2)]=0;
          HEAP32[(((buf)+(8))>>2)]=stat.ino;
          HEAP32[(((buf)+(12))>>2)]=stat.mode;
          HEAP32[(((buf)+(16))>>2)]=stat.nlink;
          HEAP32[(((buf)+(20))>>2)]=stat.uid;
          HEAP32[(((buf)+(24))>>2)]=stat.gid;
          HEAP32[(((buf)+(28))>>2)]=stat.rdev;
          HEAP32[(((buf)+(32))>>2)]=0;
          (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;
          HEAP32[(((buf)+(56))>>2)]=(stat.atime.getTime() / 1000)|0;
          HEAP32[(((buf)+(60))>>2)]=0;
          HEAP32[(((buf)+(64))>>2)]=(stat.mtime.getTime() / 1000)|0;
          HEAP32[(((buf)+(68))>>2)]=0;
          HEAP32[(((buf)+(72))>>2)]=(stat.ctime.getTime() / 1000)|0;
          HEAP32[(((buf)+(76))>>2)]=0;
          (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)+(80))>>2)]=tempI64[0],HEAP32[(((buf)+(84))>>2)]=tempI64[1]);
          return 0;
        },doMsync:function(addr, stream, len, flags, offset) {
          var buffer = HEAPU8.slice(addr, addr + len);
          FS.msync(stream, buffer, offset, len, flags);
        },doMkdir:function(path, mode) {
          // remove a trailing slash, if one - /a/b/ has basename of '', but
          // we want to create b in the context of this function
          path = PATH.normalize(path);
          if (path[path.length-1] === '/') path = path.substr(0, path.length-1);
          FS.mkdir(path, mode, 0);
          return 0;
        },doMknod:function(path, mode, dev) {
          // we don't want this in the JS API as it uses mknod to create all nodes.
          switch (mode & 61440) {
            case 32768:
            case 8192:
            case 24576:
            case 4096:
            case 49152:
              break;
            default: return -28;
          }
          FS.mknod(path, mode, dev);
          return 0;
        },doReadlink:function(path, buf, bufsize) {
          if (bufsize <= 0) return -28;
          var ret = FS.readlink(path);
    
          var len = Math.min(bufsize, lengthBytesUTF8(ret));
          var endChar = HEAP8[buf+len];
          stringToUTF8(ret, buf, bufsize+1);
          // readlink is one of the rare functions that write out a C string, but does never append a null to the output buffer(!)
          // stringToUTF8() always appends a null byte, so restore the character under the null byte after the write.
          HEAP8[buf+len] = endChar;
    
          return len;
        },doAccess:function(path, amode) {
          if (amode & ~7) {
            // need a valid mode
            return -28;
          }
          var node;
          var lookup = FS.lookupPath(path, { follow: true });
          node = lookup.node;
          if (!node) {
            return -44;
          }
          var perms = '';
          if (amode & 4) perms += 'r';
          if (amode & 2) perms += 'w';
          if (amode & 1) perms += 'x';
          if (perms /* otherwise, they've just passed F_OK */ && FS.nodePermissions(node, perms)) {
            return -2;
          }
          return 0;
        },doDup:function(path, flags, suggestFD) {
          var suggest = FS.getStream(suggestFD);
          if (suggest) FS.close(suggest);
          return FS.open(path, flags, 0, suggestFD, suggestFD).fd;
        },doReadv:function(stream, iov, iovcnt, offset) {
          var ret = 0;
          for (var i = 0; i < iovcnt; i++) {
            var ptr = HEAP32[(((iov)+(i*8))>>2)];
            var len = HEAP32[(((iov)+(i*8 + 4))>>2)];
            var curr = FS.read(stream, HEAP8,ptr, len, offset);
            if (curr < 0) return -1;
            ret += curr;
            if (curr < len) break; // nothing more to read
          }
          return ret;
        },doWritev:function(stream, iov, iovcnt, offset) {
          var ret = 0;
          for (var i = 0; i < iovcnt; i++) {
            var ptr = HEAP32[(((iov)+(i*8))>>2)];
            var len = HEAP32[(((iov)+(i*8 + 4))>>2)];
            var curr = FS.write(stream, HEAP8,ptr, len, offset);
            if (curr < 0) return -1;
            ret += curr;
          }
          return ret;
        },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;
        },get64:function(low, high) {
          if (low >= 0) assert(high === 0);
          else assert(high === -1);
          return low;
        }};
    function ___sys_fstat64(fd, buf) {try {
    
        var stream = SYSCALLS.getStreamFromFD(fd);
        return SYSCALLS.doStat(FS.stat, stream.path, buf);
      } catch (e) {
      if (typeof FS === 'undefined' || !(e instanceof FS.ErrnoError)) abort(e);
      return -e.errno;
    }
    }
  
    function syscallMmap2(addr, len, prot, flags, fd, off) {
        off <<= 12; // undo pgoffset
        var ptr;
        var allocated = false;
    
        // addr argument must be page aligned if MAP_FIXED flag is set.
        if ((flags & 16) !== 0 && (addr % 16384) !== 0) {
          return -28;
        }
    
        // MAP_ANONYMOUS (aka MAP_ANON) isn't actually defined by POSIX spec,
        // but it is widely used way to allocate memory pages on Linux, BSD and Mac.
        // In this case fd argument is ignored.
        if ((flags & 32) !== 0) {
          ptr = _memalign(16384, len);
          if (!ptr) return -48;
          _memset(ptr, 0, len);
          allocated = true;
        } else {
          var info = FS.getStream(fd);
          if (!info) return -8;
          var res = FS.mmap(info, addr, len, off, prot, flags);
          ptr = res.ptr;
          allocated = res.allocated;
        }
        SYSCALLS.mappings[ptr] = { malloc: ptr, len: len, allocated: allocated, fd: fd, prot: prot, flags: flags, offset: off };
        return ptr;
      }
    function ___sys_mmap2(addr, len, prot, flags, fd, off) {try {
    
        return syscallMmap2(addr, len, prot, flags, fd, off);
      } catch (e) {
      if (typeof FS === 'undefined' || !(e instanceof FS.ErrnoError)) abort(e);
      return -e.errno;
    }
    }
  
    function syscallMunmap(addr, len) {
        if ((addr | 0) === -1 || len === 0) {
          return -28;
        }
        // TODO: support unmmap'ing parts of allocations
        var info = SYSCALLS.mappings[addr];
        if (!info) return 0;
        if (len === info.len) {
          var stream = FS.getStream(info.fd);
          if (info.prot & 2) {
            SYSCALLS.doMsync(addr, stream, len, info.flags, info.offset);
          }
          FS.munmap(stream);
          SYSCALLS.mappings[addr] = null;
          if (info.allocated) {
            _free(info.malloc);
          }
        }
        return 0;
      }
    function ___sys_munmap(addr, len) {try {
    
        return syscallMunmap(addr, len);
      } catch (e) {
      if (typeof FS === 'undefined' || !(e instanceof FS.ErrnoError)) abort(e);
      return -e.errno;
    }
    }
  
    function ___sys_open(path, flags, varargs) {SYSCALLS.varargs = varargs;
    try {
    
        var pathname = SYSCALLS.getStr(path);
        var mode = SYSCALLS.get();
        var stream = FS.open(pathname, flags, mode);
        return stream.fd;
      } catch (e) {
      if (typeof FS === 'undefined' || !(e instanceof FS.ErrnoError)) abort(e);
      return -e.errno;
    }
    }
  
    function ___sys_stat64(path, buf) {try {
    
        path = SYSCALLS.getStr(path);
        return SYSCALLS.doStat(FS.stat, path, buf);
      } catch (e) {
      if (typeof FS === 'undefined' || !(e instanceof FS.ErrnoError)) abort(e);
      return -e.errno;
    }
    }
  
    function _emscripten_memcpy_big(dest, src, num) {
        HEAPU8.copyWithin(dest, src, src + num);
      }
  
    function _emscripten_get_heap_size() {
        return HEAPU8.length;
      }
    
    function abortOnCannotGrowMemory(requestedSize) {
        abort('Cannot enlarge memory arrays to size ' + requestedSize + ' bytes (OOM). Either (1) compile with  -s INITIAL_MEMORY=X  with X higher than the current value ' + HEAP8.length + ', (2) compile with  -s ALLOW_MEMORY_GROWTH=1  which allows increasing the size at runtime, or (3) if you want malloc to return NULL (0) instead of this abort, compile with  -s ABORTING_MALLOC=0 ');
      }
    function _emscripten_resize_heap(requestedSize) {
        requestedSize = requestedSize >>> 0;
        abortOnCannotGrowMemory(requestedSize);
      }
  
    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) {
            env[x] = ENV[x];
          }
          var strings = [];
          for (var x in env) {
            strings.push(x + '=' + env[x]);
          }
          getEnvStrings.strings = strings;
        }
        return getEnvStrings.strings;
      }
    function _environ_get(__environ, environ_buf) {try {
    
        var bufSize = 0;
        getEnvStrings().forEach(function(string, i) {
          var ptr = environ_buf + bufSize;
          HEAP32[(((__environ)+(i * 4))>>2)]=ptr;
          writeAsciiToMemory(string, ptr);
          bufSize += string.length + 1;
        });
        return 0;
      } catch (e) {
      if (typeof FS === 'undefined' || !(e instanceof FS.ErrnoError)) abort(e);
      return e.errno;
    }
    }
  
    function _environ_sizes_get(penviron_count, penviron_buf_size) {try {
    
        var strings = getEnvStrings();
        HEAP32[((penviron_count)>>2)]=strings.length;
        var bufSize = 0;
        strings.forEach(function(string) {
          bufSize += string.length + 1;
        });
        HEAP32[((penviron_buf_size)>>2)]=bufSize;
        return 0;
      } catch (e) {
      if (typeof FS === 'undefined' || !(e instanceof FS.ErrnoError)) abort(e);
      return e.errno;
    }
    }
  
    function _exit(status) {
        // void _exit(int status);
        // http://pubs.opengroup.org/onlinepubs/000095399/functions/exit.html
        exit(status);
      }
  
    function _fd_close(fd) {try {
    
        var stream = SYSCALLS.getStreamFromFD(fd);
        FS.close(stream);
        return 0;
      } catch (e) {
      if (typeof FS === 'undefined' || !(e instanceof FS.ErrnoError)) abort(e);
      return e.errno;
    }
    }
  
    function _fd_fdstat_get(fd, pbuf) {try {
    
        var stream = SYSCALLS.getStreamFromFD(fd);
        // All character devices are terminals (other things a Linux system would
        // assume is a character device, like the mouse, we have special APIs for).
        var type = stream.tty ? 2 :
                   FS.isDir(stream.mode) ? 3 :
                   FS.isLink(stream.mode) ? 7 :
                   4;
        HEAP8[((pbuf)>>0)]=type;
        // TODO HEAP16[(((pbuf)+(2))>>1)]=?;
        // TODO (tempI64 = [?>>>0,(tempDouble=?,(+(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[(((pbuf)+(8))>>2)]=tempI64[0],HEAP32[(((pbuf)+(12))>>2)]=tempI64[1]);
        // TODO (tempI64 = [?>>>0,(tempDouble=?,(+(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[(((pbuf)+(16))>>2)]=tempI64[0],HEAP32[(((pbuf)+(20))>>2)]=tempI64[1]);
        return 0;
      } catch (e) {
      if (typeof FS === 'undefined' || !(e instanceof FS.ErrnoError)) abort(e);
      return e.errno;
    }
    }
  
    function _fd_read(fd, iov, iovcnt, pnum) {try {
    
        var stream = SYSCALLS.getStreamFromFD(fd);
        var num = SYSCALLS.doReadv(stream, iov, iovcnt);
        HEAP32[((pnum)>>2)]=num
        return 0;
      } catch (e) {
      if (typeof FS === 'undefined' || !(e instanceof FS.ErrnoError)) abort(e);
      return e.errno;
    }
    }
  
    function _fd_seek(fd, offset_low, offset_high, whence, newOffset) {try {
    
        
        var stream = SYSCALLS.getStreamFromFD(fd);
        var HIGH_OFFSET = 0x100000000; // 2^32
        // use an unsigned operator on low and shift high by 32-bits
        var offset = offset_high * HIGH_OFFSET + (offset_low >>> 0);
    
        var DOUBLE_LIMIT = 0x20000000000000; // 2^53
        // we also check for equality since DOUBLE_LIMIT + 1 == DOUBLE_LIMIT
        if (offset <= -DOUBLE_LIMIT || offset >= DOUBLE_LIMIT) {
          return -61;
        }
    
        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 instanceof FS.ErrnoError)) abort(e);
      return e.errno;
    }
    }
  
    function _fd_write(fd, iov, iovcnt, pnum) {try {
    
        var stream = SYSCALLS.getStreamFromFD(fd);
        var num = SYSCALLS.doWritev(stream, iov, iovcnt);
        HEAP32[((pnum)>>2)]=num
        return 0;
      } catch (e) {
      if (typeof FS === 'undefined' || !(e instanceof FS.ErrnoError)) abort(e);
      return e.errno;
    }
    }
  
    function _setTempRet0($i) {
        setTempRet0(($i) | 0);
      }
  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();;
  if (ENVIRONMENT_IS_NODE) { var fs = require("fs"); var NODEJS_PATH = require("path"); NODEFS.staticInit(); };
  if (ENVIRONMENT_IS_NODE) {var _wrapNodeError = function(func) { return function() { try { return func.apply(this, arguments) } catch (e) { if (!e.code) throw e; throw new FS.ErrnoError(ERRNO_CODES[e.code]); } } };var VFS = Object.assign({}, FS);for (var _key in NODERAWFS) FS[_key] = _wrapNodeError(NODERAWFS[_key]);}else { throw new Error("NODERAWFS is currently only supported on Node.js environment.") };
  var ASSERTIONS = true;
  
  
  
  /** @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;
  }
  
  function intArrayToString(array) {
    var ret = [];
    for (var i = 0; i < array.length; i++) {
      var chr = array[i];
      if (chr > 0xFF) {
        if (ASSERTIONS) {
          assert(false, 'Character code ' + chr + ' (' + String.fromCharCode(chr) + ')  at offset ' + i + ' not in 0x00-0xFF.');
        }
        chr &= 0xFF;
      }
      ret.push(String.fromCharCode(chr));
    }
    return ret.join('');
  }
  
  
  
  __ATINIT__.push({ func: function() { ___wasm_call_ctors() } });
  var asmLibraryArg = {
    "__assert_fail": ___assert_fail,
    "__sys_fstat64": ___sys_fstat64,
    "__sys_mmap2": ___sys_mmap2,
    "__sys_munmap": ___sys_munmap,
    "__sys_open": ___sys_open,
    "__sys_stat64": ___sys_stat64,
    "emscripten_memcpy_big": _emscripten_memcpy_big,
    "emscripten_resize_heap": _emscripten_resize_heap,
    "environ_get": _environ_get,
    "environ_sizes_get": _environ_sizes_get,
    "exit": _exit,
    "fd_close": _fd_close,
    "fd_fdstat_get": _fd_fdstat_get,
    "fd_read": _fd_read,
    "fd_seek": _fd_seek,
    "fd_write": _fd_write,
    "setTempRet0": _setTempRet0
  };
  var asm = createWasm();
  /** @type {function(...*):?} */
  var ___wasm_call_ctors = Module["___wasm_call_ctors"] = createExportWrapper("__wasm_call_ctors");
  
  /** @type {function(...*):?} */
  var _main = Module["_main"] = createExportWrapper("main");
  
  /** @type {function(...*):?} */
  var _memset = Module["_memset"] = createExportWrapper("memset");
  
  /** @type {function(...*):?} */
  var ___errno_location = Module["___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_get_end = Module["_emscripten_stack_get_end"] = function() {
    return (_emscripten_stack_get_end = Module["_emscripten_stack_get_end"] = Module["asm"]["emscripten_stack_get_end"]).apply(null, arguments);
  };
  
  /** @type {function(...*):?} */
  var stackSave = Module["stackSave"] = createExportWrapper("stackSave");
  
  /** @type {function(...*):?} */
  var stackRestore = Module["stackRestore"] = createExportWrapper("stackRestore");
  
  /** @type {function(...*):?} */
  var stackAlloc = Module["stackAlloc"] = createExportWrapper("stackAlloc");
  
  /** @type {function(...*):?} */
  var _emscripten_stack_init = Module["_emscripten_stack_init"] = function() {
    return (_emscripten_stack_init = Module["_emscripten_stack_init"] = Module["asm"]["emscripten_stack_init"]).apply(null, arguments);
  };
  
  /** @type {function(...*):?} */
  var _emscripten_stack_get_free = Module["_emscripten_stack_get_free"] = function() {
    return (_emscripten_stack_get_free = Module["_emscripten_stack_get_free"] = Module["asm"]["emscripten_stack_get_free"]).apply(null, arguments);
  };
  
  /** @type {function(...*):?} */
  var _memalign = Module["_memalign"] = createExportWrapper("memalign");
  
  /** @type {function(...*):?} */
  var dynCall_viij = Module["dynCall_viij"] = createExportWrapper("dynCall_viij");
  
  /** @type {function(...*):?} */
  var dynCall_jiji = Module["dynCall_jiji"] = createExportWrapper("dynCall_jiji");
  
  /** @type {function(...*):?} */
  var dynCall_ji = Module["dynCall_ji"] = createExportWrapper("dynCall_ji");
  
  
  
  
  
  // === Auto-generated postamble setup entry stuff ===
  
  if (!Object.getOwnPropertyDescriptor(Module, "intArrayFromString")) Module["intArrayFromString"] = function() { abort("'intArrayFromString' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "intArrayToString")) Module["intArrayToString"] = function() { abort("'intArrayToString' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "ccall")) Module["ccall"] = function() { abort("'ccall' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "cwrap")) Module["cwrap"] = function() { abort("'cwrap' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "setValue")) Module["setValue"] = function() { abort("'setValue' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "getValue")) Module["getValue"] = function() { abort("'getValue' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "allocate")) Module["allocate"] = function() { abort("'allocate' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "UTF8ArrayToString")) Module["UTF8ArrayToString"] = function() { abort("'UTF8ArrayToString' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "UTF8ToString")) Module["UTF8ToString"] = function() { abort("'UTF8ToString' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "stringToUTF8Array")) Module["stringToUTF8Array"] = function() { abort("'stringToUTF8Array' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "stringToUTF8")) Module["stringToUTF8"] = function() { abort("'stringToUTF8' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "lengthBytesUTF8")) Module["lengthBytesUTF8"] = function() { abort("'lengthBytesUTF8' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "stackTrace")) Module["stackTrace"] = function() { abort("'stackTrace' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "addOnPreRun")) Module["addOnPreRun"] = function() { abort("'addOnPreRun' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "addOnInit")) Module["addOnInit"] = function() { abort("'addOnInit' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "addOnPreMain")) Module["addOnPreMain"] = function() { abort("'addOnPreMain' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "addOnExit")) Module["addOnExit"] = function() { abort("'addOnExit' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "addOnPostRun")) Module["addOnPostRun"] = function() { abort("'addOnPostRun' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "writeStringToMemory")) Module["writeStringToMemory"] = function() { abort("'writeStringToMemory' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "writeArrayToMemory")) Module["writeArrayToMemory"] = function() { abort("'writeArrayToMemory' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "writeAsciiToMemory")) Module["writeAsciiToMemory"] = function() { abort("'writeAsciiToMemory' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "addRunDependency")) Module["addRunDependency"] = function() { abort("'addRunDependency' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ). Alternatively, forcing filesystem support (-s FORCE_FILESYSTEM=1) can export this for you") };
  if (!Object.getOwnPropertyDescriptor(Module, "removeRunDependency")) Module["removeRunDependency"] = function() { abort("'removeRunDependency' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ). Alternatively, forcing filesystem support (-s FORCE_FILESYSTEM=1) can export this for you") };
  if (!Object.getOwnPropertyDescriptor(Module, "FS_createFolder")) Module["FS_createFolder"] = function() { abort("'FS_createFolder' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "FS_createPath")) Module["FS_createPath"] = function() { abort("'FS_createPath' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ). Alternatively, forcing filesystem support (-s FORCE_FILESYSTEM=1) can export this for you") };
  if (!Object.getOwnPropertyDescriptor(Module, "FS_createDataFile")) Module["FS_createDataFile"] = function() { abort("'FS_createDataFile' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ). Alternatively, forcing filesystem support (-s FORCE_FILESYSTEM=1) can export this for you") };
  if (!Object.getOwnPropertyDescriptor(Module, "FS_createPreloadedFile")) Module["FS_createPreloadedFile"] = function() { abort("'FS_createPreloadedFile' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ). Alternatively, forcing filesystem support (-s FORCE_FILESYSTEM=1) can export this for you") };
  if (!Object.getOwnPropertyDescriptor(Module, "FS_createLazyFile")) Module["FS_createLazyFile"] = function() { abort("'FS_createLazyFile' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ). Alternatively, forcing filesystem support (-s FORCE_FILESYSTEM=1) can export this for you") };
  if (!Object.getOwnPropertyDescriptor(Module, "FS_createLink")) Module["FS_createLink"] = function() { abort("'FS_createLink' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "FS_createDevice")) Module["FS_createDevice"] = function() { abort("'FS_createDevice' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ). Alternatively, forcing filesystem support (-s FORCE_FILESYSTEM=1) can export this for you") };
  if (!Object.getOwnPropertyDescriptor(Module, "FS_unlink")) Module["FS_unlink"] = function() { abort("'FS_unlink' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ). Alternatively, forcing filesystem support (-s FORCE_FILESYSTEM=1) can export this for you") };
  if (!Object.getOwnPropertyDescriptor(Module, "getLEB")) Module["getLEB"] = function() { abort("'getLEB' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "getFunctionTables")) Module["getFunctionTables"] = function() { abort("'getFunctionTables' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "alignFunctionTables")) Module["alignFunctionTables"] = function() { abort("'alignFunctionTables' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "registerFunctions")) Module["registerFunctions"] = function() { abort("'registerFunctions' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "addFunction")) Module["addFunction"] = function() { abort("'addFunction' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "removeFunction")) Module["removeFunction"] = function() { abort("'removeFunction' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "getFuncWrapper")) Module["getFuncWrapper"] = function() { abort("'getFuncWrapper' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "prettyPrint")) Module["prettyPrint"] = function() { abort("'prettyPrint' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "makeBigInt")) Module["makeBigInt"] = function() { abort("'makeBigInt' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "dynCall")) Module["dynCall"] = function() { abort("'dynCall' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "getCompilerSetting")) Module["getCompilerSetting"] = function() { abort("'getCompilerSetting' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "print")) Module["print"] = function() { abort("'print' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "printErr")) Module["printErr"] = function() { abort("'printErr' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "getTempRet0")) Module["getTempRet0"] = function() { abort("'getTempRet0' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "setTempRet0")) Module["setTempRet0"] = function() { abort("'setTempRet0' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "callMain")) Module["callMain"] = function() { abort("'callMain' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "abort")) Module["abort"] = function() { abort("'abort' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "stringToNewUTF8")) Module["stringToNewUTF8"] = function() { abort("'stringToNewUTF8' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "setFileTime")) Module["setFileTime"] = function() { abort("'setFileTime' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "abortOnCannotGrowMemory")) Module["abortOnCannotGrowMemory"] = function() { abort("'abortOnCannotGrowMemory' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "emscripten_realloc_buffer")) Module["emscripten_realloc_buffer"] = function() { abort("'emscripten_realloc_buffer' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "ENV")) Module["ENV"] = function() { abort("'ENV' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "ERRNO_CODES")) Module["ERRNO_CODES"] = function() { abort("'ERRNO_CODES' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "ERRNO_MESSAGES")) Module["ERRNO_MESSAGES"] = function() { abort("'ERRNO_MESSAGES' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "setErrNo")) Module["setErrNo"] = function() { abort("'setErrNo' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "DNS")) Module["DNS"] = function() { abort("'DNS' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "getHostByName")) Module["getHostByName"] = function() { abort("'getHostByName' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "GAI_ERRNO_MESSAGES")) Module["GAI_ERRNO_MESSAGES"] = function() { abort("'GAI_ERRNO_MESSAGES' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "Protocols")) Module["Protocols"] = function() { abort("'Protocols' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "Sockets")) Module["Sockets"] = function() { abort("'Sockets' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "getRandomDevice")) Module["getRandomDevice"] = function() { abort("'getRandomDevice' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "traverseStack")) Module["traverseStack"] = function() { abort("'traverseStack' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "UNWIND_CACHE")) Module["UNWIND_CACHE"] = function() { abort("'UNWIND_CACHE' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "withBuiltinMalloc")) Module["withBuiltinMalloc"] = function() { abort("'withBuiltinMalloc' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "readAsmConstArgsArray")) Module["readAsmConstArgsArray"] = function() { abort("'readAsmConstArgsArray' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "readAsmConstArgs")) Module["readAsmConstArgs"] = function() { abort("'readAsmConstArgs' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "mainThreadEM_ASM")) Module["mainThreadEM_ASM"] = function() { abort("'mainThreadEM_ASM' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "jstoi_q")) Module["jstoi_q"] = function() { abort("'jstoi_q' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "jstoi_s")) Module["jstoi_s"] = function() { abort("'jstoi_s' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "getExecutableName")) Module["getExecutableName"] = function() { abort("'getExecutableName' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "listenOnce")) Module["listenOnce"] = function() { abort("'listenOnce' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "autoResumeAudioContext")) Module["autoResumeAudioContext"] = function() { abort("'autoResumeAudioContext' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "dynCallLegacy")) Module["dynCallLegacy"] = function() { abort("'dynCallLegacy' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "getDynCaller")) Module["getDynCaller"] = function() { abort("'getDynCaller' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "dynCall")) Module["dynCall"] = function() { abort("'dynCall' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "callRuntimeCallbacks")) Module["callRuntimeCallbacks"] = function() { abort("'callRuntimeCallbacks' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "abortStackOverflow")) Module["abortStackOverflow"] = function() { abort("'abortStackOverflow' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "reallyNegative")) Module["reallyNegative"] = function() { abort("'reallyNegative' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "unSign")) Module["unSign"] = function() { abort("'unSign' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "reSign")) Module["reSign"] = function() { abort("'reSign' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "formatString")) Module["formatString"] = function() { abort("'formatString' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "PATH")) Module["PATH"] = function() { abort("'PATH' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "PATH_FS")) Module["PATH_FS"] = function() { abort("'PATH_FS' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "SYSCALLS")) Module["SYSCALLS"] = function() { abort("'SYSCALLS' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "syscallMmap2")) Module["syscallMmap2"] = function() { abort("'syscallMmap2' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "syscallMunmap")) Module["syscallMunmap"] = function() { abort("'syscallMunmap' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "JSEvents")) Module["JSEvents"] = function() { abort("'JSEvents' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "specialHTMLTargets")) Module["specialHTMLTargets"] = function() { abort("'specialHTMLTargets' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "maybeCStringToJsString")) Module["maybeCStringToJsString"] = function() { abort("'maybeCStringToJsString' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "findEventTarget")) Module["findEventTarget"] = function() { abort("'findEventTarget' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "findCanvasEventTarget")) Module["findCanvasEventTarget"] = function() { abort("'findCanvasEventTarget' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "polyfillSetImmediate")) Module["polyfillSetImmediate"] = function() { abort("'polyfillSetImmediate' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "demangle")) Module["demangle"] = function() { abort("'demangle' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "demangleAll")) Module["demangleAll"] = function() { abort("'demangleAll' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "jsStackTrace")) Module["jsStackTrace"] = function() { abort("'jsStackTrace' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "stackTrace")) Module["stackTrace"] = function() { abort("'stackTrace' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "getEnvStrings")) Module["getEnvStrings"] = function() { abort("'getEnvStrings' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "checkWasiClock")) Module["checkWasiClock"] = function() { abort("'checkWasiClock' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "writeI53ToI64")) Module["writeI53ToI64"] = function() { abort("'writeI53ToI64' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "writeI53ToI64Clamped")) Module["writeI53ToI64Clamped"] = function() { abort("'writeI53ToI64Clamped' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "writeI53ToI64Signaling")) Module["writeI53ToI64Signaling"] = function() { abort("'writeI53ToI64Signaling' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "writeI53ToU64Clamped")) Module["writeI53ToU64Clamped"] = function() { abort("'writeI53ToU64Clamped' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "writeI53ToU64Signaling")) Module["writeI53ToU64Signaling"] = function() { abort("'writeI53ToU64Signaling' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "readI53FromI64")) Module["readI53FromI64"] = function() { abort("'readI53FromI64' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "readI53FromU64")) Module["readI53FromU64"] = function() { abort("'readI53FromU64' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "convertI32PairToI53")) Module["convertI32PairToI53"] = function() { abort("'convertI32PairToI53' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "convertU32PairToI53")) Module["convertU32PairToI53"] = function() { abort("'convertU32PairToI53' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "uncaughtExceptionCount")) Module["uncaughtExceptionCount"] = function() { abort("'uncaughtExceptionCount' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "exceptionLast")) Module["exceptionLast"] = function() { abort("'exceptionLast' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "exceptionCaught")) Module["exceptionCaught"] = function() { abort("'exceptionCaught' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "ExceptionInfoAttrs")) Module["ExceptionInfoAttrs"] = function() { abort("'ExceptionInfoAttrs' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "ExceptionInfo")) Module["ExceptionInfo"] = function() { abort("'ExceptionInfo' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "CatchInfo")) Module["CatchInfo"] = function() { abort("'CatchInfo' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "exception_addRef")) Module["exception_addRef"] = function() { abort("'exception_addRef' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "exception_decRef")) Module["exception_decRef"] = function() { abort("'exception_decRef' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "Browser")) Module["Browser"] = function() { abort("'Browser' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "funcWrappers")) Module["funcWrappers"] = function() { abort("'funcWrappers' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "getFuncWrapper")) Module["getFuncWrapper"] = function() { abort("'getFuncWrapper' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "setMainLoop")) Module["setMainLoop"] = function() { abort("'setMainLoop' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "FS")) Module["FS"] = function() { abort("'FS' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "mmapAlloc")) Module["mmapAlloc"] = function() { abort("'mmapAlloc' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "MEMFS")) Module["MEMFS"] = function() { abort("'MEMFS' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "TTY")) Module["TTY"] = function() { abort("'TTY' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "PIPEFS")) Module["PIPEFS"] = function() { abort("'PIPEFS' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "SOCKFS")) Module["SOCKFS"] = function() { abort("'SOCKFS' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "NODEFS")) Module["NODEFS"] = function() { abort("'NODEFS' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "NODERAWFS")) Module["NODERAWFS"] = function() { abort("'NODERAWFS' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "tempFixedLengthArray")) Module["tempFixedLengthArray"] = function() { abort("'tempFixedLengthArray' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "miniTempWebGLFloatBuffers")) Module["miniTempWebGLFloatBuffers"] = function() { abort("'miniTempWebGLFloatBuffers' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "heapObjectForWebGLType")) Module["heapObjectForWebGLType"] = function() { abort("'heapObjectForWebGLType' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "heapAccessShiftForWebGLHeap")) Module["heapAccessShiftForWebGLHeap"] = function() { abort("'heapAccessShiftForWebGLHeap' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "GL")) Module["GL"] = function() { abort("'GL' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "emscriptenWebGLGet")) Module["emscriptenWebGLGet"] = function() { abort("'emscriptenWebGLGet' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "computeUnpackAlignedImageSize")) Module["computeUnpackAlignedImageSize"] = function() { abort("'computeUnpackAlignedImageSize' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "emscriptenWebGLGetTexPixelData")) Module["emscriptenWebGLGetTexPixelData"] = function() { abort("'emscriptenWebGLGetTexPixelData' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "emscriptenWebGLGetUniform")) Module["emscriptenWebGLGetUniform"] = function() { abort("'emscriptenWebGLGetUniform' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "emscriptenWebGLGetVertexAttrib")) Module["emscriptenWebGLGetVertexAttrib"] = function() { abort("'emscriptenWebGLGetVertexAttrib' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "writeGLArray")) Module["writeGLArray"] = function() { abort("'writeGLArray' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "AL")) Module["AL"] = function() { abort("'AL' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "SDL_unicode")) Module["SDL_unicode"] = function() { abort("'SDL_unicode' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "SDL_ttfContext")) Module["SDL_ttfContext"] = function() { abort("'SDL_ttfContext' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "SDL_audio")) Module["SDL_audio"] = function() { abort("'SDL_audio' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "SDL")) Module["SDL"] = function() { abort("'SDL' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "SDL_gfx")) Module["SDL_gfx"] = function() { abort("'SDL_gfx' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "GLUT")) Module["GLUT"] = function() { abort("'GLUT' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "EGL")) Module["EGL"] = function() { abort("'EGL' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "GLFW_Window")) Module["GLFW_Window"] = function() { abort("'GLFW_Window' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "GLFW")) Module["GLFW"] = function() { abort("'GLFW' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "GLEW")) Module["GLEW"] = function() { abort("'GLEW' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "IDBStore")) Module["IDBStore"] = function() { abort("'IDBStore' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "runAndAbortIfError")) Module["runAndAbortIfError"] = function() { abort("'runAndAbortIfError' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "warnOnce")) Module["warnOnce"] = function() { abort("'warnOnce' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "stackSave")) Module["stackSave"] = function() { abort("'stackSave' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "stackRestore")) Module["stackRestore"] = function() { abort("'stackRestore' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "stackAlloc")) Module["stackAlloc"] = function() { abort("'stackAlloc' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "AsciiToString")) Module["AsciiToString"] = function() { abort("'AsciiToString' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "stringToAscii")) Module["stringToAscii"] = function() { abort("'stringToAscii' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "UTF16ToString")) Module["UTF16ToString"] = function() { abort("'UTF16ToString' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "stringToUTF16")) Module["stringToUTF16"] = function() { abort("'stringToUTF16' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "lengthBytesUTF16")) Module["lengthBytesUTF16"] = function() { abort("'lengthBytesUTF16' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "UTF32ToString")) Module["UTF32ToString"] = function() { abort("'UTF32ToString' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "stringToUTF32")) Module["stringToUTF32"] = function() { abort("'stringToUTF32' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "lengthBytesUTF32")) Module["lengthBytesUTF32"] = function() { abort("'lengthBytesUTF32' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "allocateUTF8")) Module["allocateUTF8"] = function() { abort("'allocateUTF8' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Object.getOwnPropertyDescriptor(Module, "allocateUTF8OnStack")) Module["allocateUTF8OnStack"] = function() { abort("'allocateUTF8OnStack' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  Module["writeStackCookie"] = writeStackCookie;
  Module["checkStackCookie"] = checkStackCookie;
  if (!Object.getOwnPropertyDescriptor(Module, "ALLOC_NORMAL")) Object.defineProperty(Module, "ALLOC_NORMAL", { configurable: true, get: function() { abort("'ALLOC_NORMAL' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") } });
  if (!Object.getOwnPropertyDescriptor(Module, "ALLOC_STACK")) Object.defineProperty(Module, "ALLOC_STACK", { configurable: true, get: function() { abort("'ALLOC_STACK' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") } });
  
  var calledRun;
  
  /**
   * @constructor
   * @this {ExitStatus}
   */
  function ExitStatus(status) {
    this.name = "ExitStatus";
    this.message = "Program terminated with exit(" + status + ")";
    this.status = status;
  }
  
  var calledMain = false;
  
  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 = Module['_main'];
  
    args = args || [];
  
    var argc = args.length+1;
    var argv = stackAlloc((argc + 1) * 4);
    HEAP32[argv >> 2] = allocateUTF8OnStack(thisProgram);
    for (var i = 1; i < argc; i++) {
      HEAP32[(argv >> 2) + i] = allocateUTF8OnStack(args[i - 1]);
    }
    HEAP32[(argv >> 2) + argc] = 0;
  
    try {
  
      var ret = entryFunction(argc, argv);
  
      // In PROXY_TO_PTHREAD builds, we should never exit the runtime below, as execution is asynchronously handed
      // off to a pthread.
      // if we're not running an evented main loop, it's time to exit
        exit(ret, /* implicit = */ true);
    }
    catch(e) {
      if (e instanceof ExitStatus) {
        // exit() throws this once it's done to make sure execution
        // has been stopped completely
        return;
      } else if (e == 'unwind') {
        // running an evented main loop, don't immediately exit
        noExitRuntime = true;
        return;
      } else {
        var toLog = e;
        if (e && typeof e === 'object' && e.stack) {
          toLog = [e, e.stack];
        }
        err('exception thrown: ' + toLog);
        quit_(1, e);
      }
    } finally {
      calledMain = true;
  
    }
  }
  
  /** @type {function(Array=)} */
  function run(args) {
    args = args || arguments_;
  
    if (runDependencies > 0) {
      return;
    }
  
    // 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.
    // TODO(sbc): Move writeStackCookie to native to to avoid this.
    _emscripten_stack_init();
    writeStackCookie();
  
    preRun();
  
    if (runDependencies > 0) return; // a preRun added a dependency, run will be called later
  
    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();
  }
  Module['run'] = run;
  
  /** @param {boolean|number=} implicit */
  function exit(status, implicit) {
  
    // if this is just main exit-ing implicitly, and the status is 0, then we
    // don't need to do anything here and can just leave. if the status is
    // non-zero, though, then we need to report it.
    // (we may have warned about this earlier, if a situation justifies doing so)
    if (implicit && noExitRuntime && status === 0) {
      return;
    }
  
    if (noExitRuntime) {
      // if exit() was called, we may warn the user if the runtime isn't actually being shut down
      if (!implicit) {
        var msg = 'program exited (with status: ' + status + '), but noExitRuntime is set 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);
      }
    } else {
  
      EXITSTATUS = status;
  
      exitRuntime();
  
      if (Module['onExit']) Module['onExit'](status);
  
      ABORT = true;
    }
  
    quit_(status, new ExitStatus(status));
  }
  
  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();
  
  
  
  
  
  