text: // Copyright 2010 The Emscripten Authors.  All rights reserved.
  // Emscripten is available under two separate licenses, the MIT license and the
  // University of Illinois/NCSA Open Source License.  Both these licenses can be
  // found in the LICENSE file.
  
  // 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)
  
  if (!Module.expectedDataFileDownloads) {
    Module.expectedDataFileDownloads = 0;
    Module.finishedDataFileDownloads = 0;
  }
  Module.expectedDataFileDownloads++;
  (function() {
   var loadPackage = function(metadata) {
  
      var PACKAGE_PATH;
      if (typeof window === 'object') {
        PACKAGE_PATH = window['encodeURIComponent'](window.location.pathname.toString().substring(0, window.location.pathname.toString().lastIndexOf('/')) + '/');
      } else if (typeof location !== 'undefined') {
        // worker
        PACKAGE_PATH = encodeURIComponent(location.pathname.toString().substring(0, location.pathname.toString().lastIndexOf('/')) + '/');
      } else {
        throw 'using preloaded data can only be done on a web page or in a web worker';
      }
      var PACKAGE_NAME = 'index.data';
      var REMOTE_PACKAGE_BASE = 'index.data';
      if (typeof Module['locateFilePackage'] === 'function' && !Module['locateFile']) {
        Module['locateFile'] = Module['locateFilePackage'];
        err('warning: you defined Module.locateFilePackage, that has been renamed to Module.locateFile (using your locateFilePackage for now)');
      }
      var REMOTE_PACKAGE_NAME = Module['locateFile'] ? Module['locateFile'](REMOTE_PACKAGE_BASE, '') : REMOTE_PACKAGE_BASE;
    
      var REMOTE_PACKAGE_SIZE = metadata.remote_package_size;
      var PACKAGE_UUID = metadata.package_uuid;
    
      function fetchRemotePackage(packageName, packageSize, callback, errback) {
        var xhr = new XMLHttpRequest();
        xhr.open('GET', packageName, true);
        xhr.responseType = 'arraybuffer';
        xhr.onprogress = function(event) {
          var url = packageName;
          var size = packageSize;
          if (event.total) size = event.total;
          if (event.loaded) {
            if (!xhr.addedTotal) {
              xhr.addedTotal = true;
              if (!Module.dataFileDownloads) Module.dataFileDownloads = {};
              Module.dataFileDownloads[url] = {
                loaded: event.loaded,
                total: size
              };
            } else {
              Module.dataFileDownloads[url].loaded = event.loaded;
            }
            var total = 0;
            var loaded = 0;
            var num = 0;
            for (var download in Module.dataFileDownloads) {
            var data = Module.dataFileDownloads[download];
              total += data.total;
              loaded += data.loaded;
              num++;
            }
            total = Math.ceil(total * Module.expectedDataFileDownloads/num);
            if (Module['setStatus']) Module['setStatus']('Downloading data... (' + loaded + '/' + total + ')');
          } else if (!Module.dataFileDownloads) {
            if (Module['setStatus']) Module['setStatus']('Downloading data...');
          }
        };
        xhr.onerror = function(event) {
          throw new Error("NetworkError for: " + packageName);
        }
        xhr.onload = function(event) {
          if (xhr.status == 200 || xhr.status == 304 || xhr.status == 206 || (xhr.status == 0 && xhr.response)) { // file URLs can return 0
            var packageData = xhr.response;
            callback(packageData);
          } else {
            throw new Error(xhr.statusText + " : " + xhr.responseURL);
          }
        };
        xhr.send(null);
      };
  
      function handleError(error) {
        console.error('package error:', error);
      };
    
        var fetchedCallback = null;
        var fetched = Module['getPreloadedPackage'] ? Module['getPreloadedPackage'](REMOTE_PACKAGE_NAME, REMOTE_PACKAGE_SIZE) : null;
  
        if (!fetched) fetchRemotePackage(REMOTE_PACKAGE_NAME, REMOTE_PACKAGE_SIZE, function(data) {
          if (fetchedCallback) {
            fetchedCallback(data);
            fetchedCallback = null;
          } else {
            fetched = data;
          }
        }, handleError);
      
    function runWithFS() {
  
      function assert(check, msg) {
        if (!check) throw msg + new Error().stack;
      }
  
      function DataRequest(start, end, audio) {
        this.start = start;
        this.end = end;
        this.audio = audio;
      }
      DataRequest.prototype = {
        requests: {},
        open: function(mode, name) {
          this.name = name;
          this.requests[name] = this;
          Module['addRunDependency']('fp ' + this.name);
        },
        send: function() {},
        onload: function() {
          var byteArray = this.byteArray.subarray(this.start, this.end);
          this.finish(byteArray);
        },
        finish: function(byteArray) {
          var that = this;
  
          Module['FS_createDataFile'](this.name, null, byteArray, true, true, true); // canOwn this data in the filesystem, it is a slide into the heap that will never change
          Module['removeRunDependency']('fp ' + that.name);
  
          this.requests[this.name] = null;
        }
      };
  
          var files = metadata.files;
          for (var i = 0; i < files.length; ++i) {
            new DataRequest(files[i].start, files[i].end, files[i].audio).open('GET', files[i].filename);
          }
  
    
      function processPackageData(arrayBuffer) {
        Module.finishedDataFileDownloads++;
        assert(arrayBuffer, 'Loading data file failed.');
        assert(arrayBuffer instanceof ArrayBuffer, 'bad input to processPackageData');
        var byteArray = new Uint8Array(arrayBuffer);
        var curr;
        
          // copy the entire loaded file into a spot in the heap. Files will refer to slices in that. They cannot be freed though
          // (we may be allocating before malloc is ready, during startup).
          if (Module['SPLIT_MEMORY']) err('warning: you should run the file packager with --no-heap-copy when SPLIT_MEMORY is used, otherwise copying into the heap may fail due to the splitting');
          var ptr = Module['getMemory'](byteArray.length);
          Module['HEAPU8'].set(byteArray, ptr);
          DataRequest.prototype.byteArray = Module['HEAPU8'].subarray(ptr, ptr+byteArray.length);
    
            var files = metadata.files;
            for (var i = 0; i < files.length; ++i) {
              DataRequest.prototype.requests[files[i].filename].onload();
            }
                Module['removeRunDependency']('datafile_index.data');
  
      };
      Module['addRunDependency']('datafile_index.data');
    
      if (!Module.preloadResults) Module.preloadResults = {};
    
        Module.preloadResults[PACKAGE_NAME] = {fromCache: false};
        if (fetched) {
          processPackageData(fetched);
          fetched = null;
        } else {
          fetchedCallback = processPackageData;
        }
      
    }
    if (Module['calledRun']) {
      runWithFS();
    } else {
      if (!Module['preRun']) Module['preRun'] = [];
      Module["preRun"].push(runWithFS); // FS is not initialized yet, wait for it
    }
  
   }
   loadPackage({"files": [{"filename": "/greeneggs.txt", "start": 0, "end": 3595, "audio": 0}], "remote_package_size": 3595, "package_uuid": "236543f6-7619-49c6-8cb3-b5bd291ec18d"});
  
  })();
  
  
  
  // 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];
    }
  }
  
  Module['arguments'] = [];
  Module['thisProgram'] = './this.program';
  Module['quit'] = function(status, toThrow) {
    throw toThrow;
  };
  Module['preRun'] = [];
  Module['postRun'] = [];
  
  // 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';
  ENVIRONMENT_IS_NODE = typeof process === 'object' && typeof require === 'function' && !ENVIRONMENT_IS_WEB && !ENVIRONMENT_IS_WORKER;
  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)');
  }
  
  // Three configurations we can be running in:
  // 1) We could be the application main() thread running in the main JS UI thread. (ENVIRONMENT_IS_WORKER == false and ENVIRONMENT_IS_PTHREAD == false)
  // 2) We could be the application main() thread proxied to worker. (with Emscripten -s PROXY_TO_WORKER=1) (ENVIRONMENT_IS_WORKER == true, ENVIRONMENT_IS_PTHREAD == false)
  // 3) We could be an application pthread running in a worker. (ENVIRONMENT_IS_WORKER == true and ENVIRONMENT_IS_PTHREAD == true)
  
  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');
  
  // `/` should be present at the end if `scriptDirectory` is not empty
  var scriptDirectory = '';
  function locateFile(path) {
    if (Module['locateFile']) {
      return Module['locateFile'](path, scriptDirectory);
    } else {
      return scriptDirectory + path;
    }
  }
  
  if (ENVIRONMENT_IS_NODE) {
    scriptDirectory = __dirname + '/';
  
    // Expose functionality in the same simple way that the shells work
    // Note that we pollute the global namespace here, otherwise we break in node
    var nodeFS;
    var nodePath;
  
    Module['read'] = function shell_read(filename, binary) {
      var ret;
        if (!nodeFS) nodeFS = require('fs');
        if (!nodePath) nodePath = require('path');
        filename = nodePath['normalize'](filename);
        ret = nodeFS['readFileSync'](filename);
      return binary ? ret : ret.toString();
    };
  
    Module['readBinary'] = function readBinary(filename) {
      var ret = Module['read'](filename, true);
      if (!ret.buffer) {
        ret = new Uint8Array(ret);
      }
      assert(ret.buffer);
      return ret;
    };
  
    if (process['argv'].length > 1) {
      Module['thisProgram'] = process['argv'][1].replace(/\\/g, '/');
    }
  
    Module['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;
      }
    });
    // Currently node will swallow unhandled rejections, but this behavior is
    // deprecated, and in the future it will exit with error status.
    process['on']('unhandledRejection', abort);
  
    Module['quit'] = function(status) {
      process['exit'](status);
    };
  
    Module['inspect'] = function () { return '[Emscripten Module object]'; };
  } else
  if (ENVIRONMENT_IS_SHELL) {
  
  
    if (typeof read != 'undefined') {
      Module['read'] = function shell_read(f) {
        return read(f);
      };
    }
  
    Module['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') {
      Module['arguments'] = scriptArgs;
    } else if (typeof arguments != 'undefined') {
      Module['arguments'] = arguments;
    }
  
    if (typeof quit === 'function') {
      Module['quit'] = function(status) {
        quit(status);
      }
    }
  } else
  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 (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 = '';
    }
  
  
    Module['read'] = function shell_read(url) {
        var xhr = new XMLHttpRequest();
        xhr.open('GET', url, false);
        xhr.send(null);
        return xhr.responseText;
    };
  
    if (ENVIRONMENT_IS_WORKER) {
      Module['readBinary'] = function readBinary(url) {
          var xhr = new XMLHttpRequest();
          xhr.open('GET', url, false);
          xhr.responseType = 'arraybuffer';
          xhr.send(null);
          return new Uint8Array(xhr.response);
      };
    }
  
    Module['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);
    };
  
    Module['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.
  // If the user provided Module.print or printErr, use that. Otherwise,
  // console.log is checked first, as 'print' on the web will open a print dialogue
  // printErr is preferable to console.warn (works better in shells)
  // bind(console) is necessary to fix IE/Edge closed dev tools panel behavior.
  var out = Module['print'] || (typeof console !== 'undefined' ? console.log.bind(console) : (typeof print !== 'undefined' ? print : null));
  var err = Module['printErr'] || (typeof printErr !== 'undefined' ? printErr : ((typeof console !== 'undefined' && console.warn.bind(console)) || out));
  
  // 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 = undefined;
  
  
  
  // Copyright 2017 The Emscripten Authors.  All rights reserved.
  // Emscripten is available under two separate licenses, the MIT license and the
  // University of Illinois/NCSA Open Source License.  Both these licenses can be
  // found in the LICENSE file.
  
  // {{PREAMBLE_ADDITIONS}}
  
  var STACK_ALIGN = 16;
  
  // stack management, and other functionality that is provided by the compiled code,
  // should not be used before it is ready
  stackSave = stackRestore = stackAlloc = setTempRet0 = getTempRet0 = function() {
    abort('cannot use the stack before compiled code is ready to run, and has provided stack access');
  };
  
  function staticAlloc(size) {
    assert(!staticSealed);
    var ret = STATICTOP;
    STATICTOP = (STATICTOP + size + 15) & -16;
    assert(STATICTOP < TOTAL_MEMORY, 'not enough memory for static allocation - increase TOTAL_MEMORY');
    return ret;
  }
  
  function dynamicAlloc(size) {
    assert(DYNAMICTOP_PTR);
    var ret = HEAP32[DYNAMICTOP_PTR>>2];
    var end = (ret + size + 15) & -16;
    HEAP32[DYNAMICTOP_PTR>>2] = end;
    if (end >= TOTAL_MEMORY) {
      var success = enlargeMemory();
      if (!success) {
        HEAP32[DYNAMICTOP_PTR>>2] = ret;
        return 0;
      }
    }
    return ret;
  }
  
  function alignMemory(size, factor) {
    if (!factor) factor = STACK_ALIGN; // stack alignment (16-byte) by default
    var ret = size = Math.ceil(size / factor) * factor;
    return ret;
  }
  
  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 = parseInt(type.substr(1));
          assert(bits % 8 === 0);
          return bits / 8;
        } else {
          return 0;
        }
      }
    }
  }
  
  function warnOnce(text) {
    if (!warnOnce.shown) warnOnce.shown = {};
    if (!warnOnce.shown[text]) {
      warnOnce.shown[text] = 1;
      err(text);
    }
  }
  
  var asm2wasmImports = { // special asm2wasm imports
      "f64-rem": function(x, y) {
          return x % y;
      },
      "debugger": function() {
          debugger;
      }
  };
  
  
  
  var jsCallStartIndex = 1;
  var functionPointers = new Array(0);
  
  // 'sig' parameter is only used on LLVM wasm backend
  function addFunction(func, sig) {
    if (typeof sig === 'undefined') {
      err('warning: addFunction(): You should provide a wasm function signature string as a second argument. This is not necessary for asm.js and asm2wasm, but is required for the LLVM wasm backend, so it is recommended for full portability.');
    }
    var base = 0;
    for (var i = base; i < base + 0; i++) {
      if (!functionPointers[i]) {
        functionPointers[i] = func;
        return jsCallStartIndex + i;
      }
    }
    throw 'Finished up all reserved function pointers. Use a higher value for RESERVED_FUNCTION_POINTERS.';
  }
  
  function removeFunction(index) {
    functionPointers[index-jsCallStartIndex] = null;
  }
  
  var funcWrappers = {};
  
  function getFuncWrapper(func, sig) {
    if (!func) return; // on null pointer, return undefined
    assert(sig);
    if (!funcWrappers[sig]) {
      funcWrappers[sig] = {};
    }
    var sigCache = funcWrappers[sig];
    if (!sigCache[func]) {
      // optimize away arguments usage in common cases
      if (sig.length === 1) {
        sigCache[func] = function dynCall_wrapper() {
          return dynCall(sig, func);
        };
      } else if (sig.length === 2) {
        sigCache[func] = function dynCall_wrapper(arg) {
          return dynCall(sig, func, [arg]);
        };
      } else {
        // general case
        sigCache[func] = function dynCall_wrapper() {
          return dynCall(sig, func, Array.prototype.slice.call(arguments));
        };
      }
    }
    return sigCache[func];
  }
  
  
  function makeBigInt(low, high, unsigned) {
    return unsigned ? ((+((low>>>0)))+((+((high>>>0)))*4294967296.0)) : ((+((low>>>0)))+((+((high|0)))*4294967296.0));
  }
  
  function dynCall(sig, ptr, args) {
    if (args && args.length) {
      assert(args.length == sig.length-1);
      assert(('dynCall_' + sig) in Module, 'bad function pointer type - no table for sig \'' + sig + '\'');
      return Module['dynCall_' + sig].apply(null, [ptr].concat(args));
    } else {
      assert(sig.length == 1);
      assert(('dynCall_' + sig) in Module, 'bad function pointer type - no table for sig \'' + sig + '\'');
      return Module['dynCall_' + sig].call(null, ptr);
    }
  }
  
  
  function getCompilerSetting(name) {
    throw 'You must build with -s RETAIN_COMPILER_SETTINGS=1 for getCompilerSetting or emscripten_get_compiler_setting to work';
  }
  
  var Runtime = {
    // FIXME backwards compatibility layer for ports. Support some Runtime.*
    //       for now, fix it there, then remove it from here. That way we
    //       can minimize any period of breakage.
    dynCall: dynCall, // for SDL2 port
    // helpful errors
    getTempRet0: function() { abort('getTempRet0() is now a top-level function, after removing the Runtime object. Remove "Runtime."') },
    staticAlloc: function() { abort('staticAlloc() is now a top-level function, after removing the Runtime object. Remove "Runtime."') },
    stackAlloc: function() { abort('stackAlloc() is now a top-level function, after removing the Runtime object. Remove "Runtime."') },
  };
  
  // The address globals begin at. Very low in memory, for code size and optimization opportunities.
  // Above 0 is static memory, starting with globals.
  // Then the stack.
  // Then 'dynamic' memory for sbrk.
  var GLOBAL_BASE = 1024;
  
  
  // === 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
  
  
  
  //========================================
  // 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 = 0;
  
  /** @type {function(*, string=)} */
  function assert(condition, text) {
    if (!condition) {
      abort('Assertion failed: ' + text);
    }
  }
  
  var globalScope = this;
  
  // 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;
  }
  
  var JSfuncs = {
    // Helpers for cwrap -- it can't refer to Runtime directly because it might
    // be renamed by closure, instead it calls JSfuncs['stackSave'].body to find
    // out what the minified function name is.
    'stackSave': function() {
      stackSave()
    },
    'stackRestore': function() {
      stackRestore()
    },
    // type conversion from js to c
    'arrayToC' : function(arr) {
      var ret = stackAlloc(arr.length);
      writeArrayToMemory(arr, ret);
      return ret;
    },
    'stringToC' : 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;
    }
  };
  
  // For fast lookup of conversion functions
  var toC = {
    'string': JSfuncs['stringToC'], 'array': JSfuncs['arrayToC']
  };
  
  
  // C calling interface.
  function ccall(ident, returnType, argTypes, args, opts) {
    function convertReturnValue(ret) {
      if (returnType === 'string') return Pointer_stringify(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;
  }
  
  function cwrap(ident, returnType, argTypes, opts) {
    return function() {
      return ccall(ident, returnType, argTypes, arguments, opts);
    }
  }
  
  /** @type {function(number, number, string, boolean=)} */
  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);
      }
  }
  
  /** @type {function(number, string, boolean=)} */
  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;
  }
  
  var ALLOC_NORMAL = 0; // Tries to use _malloc()
  var ALLOC_STACK = 1; // Lives for the duration of the current function call
  var ALLOC_STATIC = 2; // Cannot be freed
  var ALLOC_DYNAMIC = 3; // Cannot be freed except through sbrk
  var ALLOC_NONE = 4; // Do not allocate
  
  // 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, or a number. If a number, then the size of the block to allocate,
  //        in *bytes* (note that this is sometimes confusing: the next parameter does not
  //        affect this!)
  // @types: Either an array of types, one for each byte (or 0 if no type at that position),
  //         or a single type which is used for the entire block. This only matters if there
  //         is initial data - if @slab is a number, then this does not matter at all and is
  //         ignored.
  // @allocator: How to allocate memory, see ALLOC_*
  /** @type {function((TypedArray|Array<number>|number), string, number, number=)} */
  function allocate(slab, types, allocator, ptr) {
    var zeroinit, size;
    if (typeof slab === 'number') {
      zeroinit = true;
      size = slab;
    } else {
      zeroinit = false;
      size = slab.length;
    }
  
    var singleType = typeof types === 'string' ? types : null;
  
    var ret;
    if (allocator == ALLOC_NONE) {
      ret = ptr;
    } else {
      ret = [typeof _malloc === 'function' ? _malloc : staticAlloc, stackAlloc, staticAlloc, dynamicAlloc][allocator === undefined ? ALLOC_STATIC : allocator](Math.max(size, singleType ? 1 : types.length));
    }
  
    if (zeroinit) {
      var stop;
      ptr = ret;
      assert((ret & 3) == 0);
      stop = ret + (size & ~3);
      for (; ptr < stop; ptr += 4) {
        HEAP32[((ptr)>>2)]=0;
      }
      stop = ret + size;
      while (ptr < stop) {
        HEAP8[((ptr++)>>0)]=0;
      }
      return ret;
    }
  
    if (singleType === 'i8') {
      if (slab.subarray || slab.slice) {
        HEAPU8.set(/** @type {!Uint8Array} */ (slab), ret);
      } else {
        HEAPU8.set(new Uint8Array(slab), ret);
      }
      return ret;
    }
  
    var i = 0, type, typeSize, previousType;
    while (i < size) {
      var curr = slab[i];
  
      type = singleType || types[i];
      if (type === 0) {
        i++;
        continue;
      }
      assert(type, 'Must know what type to store in allocate!');
  
      if (type == 'i64') type = 'i32'; // special case: we have one i32 here, and one i32 later
  
      setValue(ret+i, curr, type);
  
      // no need to look up size unless type changes, so cache it
      if (previousType !== type) {
        typeSize = getNativeTypeSize(type);
        previousType = type;
      }
      i += typeSize;
    }
  
    return ret;
  }
  
  // Allocate memory during any stage of startup - static memory early on, dynamic memory later, malloc when ready
  function getMemory(size) {
    if (!staticSealed) return staticAlloc(size);
    if (!runtimeInitialized) return dynamicAlloc(size);
    return _malloc(size);
  }
  
  /** @type {function(number, number=)} */
  function Pointer_stringify(ptr, length) {
    if (length === 0 || !ptr) return '';
    // Find the length, and check for UTF while doing so
    var hasUtf = 0;
    var t;
    var i = 0;
    while (1) {
      assert(ptr + i < TOTAL_MEMORY);
      t = HEAPU8[(((ptr)+(i))>>0)];
      hasUtf |= t;
      if (t == 0 && !length) break;
      i++;
      if (length && i == length) break;
    }
    if (!length) length = i;
  
    var ret = '';
  
    if (hasUtf < 128) {
      var MAX_CHUNK = 1024; // split up into chunks, because .apply on a huge string can overflow the stack
      var curr;
      while (length > 0) {
        curr = String.fromCharCode.apply(String, HEAPU8.subarray(ptr, ptr + Math.min(length, MAX_CHUNK)));
        ret = ret ? ret + curr : curr;
        ptr += MAX_CHUNK;
        length -= MAX_CHUNK;
      }
      return ret;
    }
    return UTF8ToString(ptr);
  }
  
  // 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 = HEAP8[((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 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;
  function UTF8ArrayToString(u8Array, idx) {
    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.
    while (u8Array[endPtr]) ++endPtr;
  
    if (endPtr - idx > 16 && u8Array.subarray && UTF8Decoder) {
      return UTF8Decoder.decode(u8Array.subarray(idx, endPtr));
    } else {
      var u0, u1, u2, u3, u4, u5;
  
      var str = '';
      while (1) {
        // 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
        u0 = u8Array[idx++];
        if (!u0) return str;
        if (!(u0 & 0x80)) { str += String.fromCharCode(u0); continue; }
        u1 = u8Array[idx++] & 63;
        if ((u0 & 0xE0) == 0xC0) { str += String.fromCharCode(((u0 & 31) << 6) | u1); continue; }
        u2 = u8Array[idx++] & 63;
        if ((u0 & 0xF0) == 0xE0) {
          u0 = ((u0 & 15) << 12) | (u1 << 6) | u2;
        } else {
          u3 = u8Array[idx++] & 63;
          if ((u0 & 0xF8) == 0xF0) {
            u0 = ((u0 & 7) << 18) | (u1 << 12) | (u2 << 6) | u3;
          } else {
            u4 = u8Array[idx++] & 63;
            if ((u0 & 0xFC) == 0xF8) {
              u0 = ((u0 & 3) << 24) | (u1 << 18) | (u2 << 12) | (u3 << 6) | u4;
            } else {
              u5 = u8Array[idx++] & 63;
              u0 = ((u0 & 1) << 30) | (u1 << 24) | (u2 << 18) | (u3 << 12) | (u4 << 6) | u5;
            }
          }
        }
        if (u0 < 0x10000) {
          str += String.fromCharCode(u0);
        } else {
          var ch = u0 - 0x10000;
          str += String.fromCharCode(0xD800 | (ch >> 10), 0xDC00 | (ch & 0x3FF));
        }
      }
    }
  }
  
  // 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.
  
  function UTF8ToString(ptr) {
    return UTF8ArrayToString(HEAPU8,ptr);
  }
  
  // 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.
  //   outU8Array: 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, outU8Array, 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;
        outU8Array[outIdx++] = u;
      } else if (u <= 0x7FF) {
        if (outIdx + 1 >= endIdx) break;
        outU8Array[outIdx++] = 0xC0 | (u >> 6);
        outU8Array[outIdx++] = 0x80 | (u & 63);
      } else if (u <= 0xFFFF) {
        if (outIdx + 2 >= endIdx) break;
        outU8Array[outIdx++] = 0xE0 | (u >> 12);
        outU8Array[outIdx++] = 0x80 | ((u >> 6) & 63);
        outU8Array[outIdx++] = 0x80 | (u & 63);
      } else if (u <= 0x1FFFFF) {
        if (outIdx + 3 >= endIdx) break;
        outU8Array[outIdx++] = 0xF0 | (u >> 18);
        outU8Array[outIdx++] = 0x80 | ((u >> 12) & 63);
        outU8Array[outIdx++] = 0x80 | ((u >> 6) & 63);
        outU8Array[outIdx++] = 0x80 | (u & 63);
      } else if (u <= 0x3FFFFFF) {
        if (outIdx + 4 >= endIdx) break;
        outU8Array[outIdx++] = 0xF8 | (u >> 24);
        outU8Array[outIdx++] = 0x80 | ((u >> 18) & 63);
        outU8Array[outIdx++] = 0x80 | ((u >> 12) & 63);
        outU8Array[outIdx++] = 0x80 | ((u >> 6) & 63);
        outU8Array[outIdx++] = 0x80 | (u & 63);
      } else {
        if (outIdx + 5 >= endIdx) break;
        outU8Array[outIdx++] = 0xFC | (u >> 30);
        outU8Array[outIdx++] = 0x80 | ((u >> 24) & 63);
        outU8Array[outIdx++] = 0x80 | ((u >> 18) & 63);
        outU8Array[outIdx++] = 0x80 | ((u >> 12) & 63);
        outU8Array[outIdx++] = 0x80 | ((u >> 6) & 63);
        outU8Array[outIdx++] = 0x80 | (u & 63);
      }
    }
    // Null-terminate the pointer to the buffer.
    outU8Array[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 if (u <= 0x1FFFFF) {
        len += 4;
      } else if (u <= 0x3FFFFFF) {
        len += 5;
      } else {
        len += 6;
      }
    }
    return len;
  }
  
  // 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) {
    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;
    while (HEAP16[idx]) ++idx;
    endPtr = idx << 1;
  
    if (endPtr - ptr > 32 && UTF16Decoder) {
      return UTF16Decoder.decode(HEAPU8.subarray(ptr, endPtr));
    } else {
      var i = 0;
  
      var str = '';
      while (1) {
        var codeUnit = HEAP16[(((ptr)+(i*2))>>1)];
        if (codeUnit == 0) return str;
        ++i;
        // fromCharCode constructs a character from a UTF-16 code unit, so we can pass the UTF16 string right through.
        str += String.fromCharCode(codeUnit);
      }
    }
  }
  
  // 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) {
    assert(ptr % 4 == 0, 'Pointer passed to UTF32ToString must be aligned to four bytes!');
    var i = 0;
  
    var str = '';
    while (1) {
      var utf32 = HEAP32[(((ptr)+(i*4))>>2)];
      if (utf32 == 0)
        return str;
      ++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);
      }
    }
  }
  
  // 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;
  }
  
  function demangle(func) {
    warnOnce('warning: build with  -s DEMANGLE_SUPPORT=1  to link in libcxxabi demangling');
    return func;
  }
  
  function demangleAll(text) {
    var regex =
      /__Z[\w\d_]+/g;
    return text.replace(regex,
      function(x) {
        var y = demangle(x);
        return x === y ? x : (y + ' [' + x + ']');
      });
  }
  
  function jsStackTrace() {
    var err = new Error();
    if (!err.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(0);
      } catch(e) {
        err = e;
      }
      if (!err.stack) {
        return '(no stack trace available)';
      }
    }
    return err.stack.toString();
  }
  
  function stackTrace() {
    var js = jsStackTrace();
    if (Module['extraStackTrace']) js += '\n' + Module['extraStackTrace']();
    return demangleAll(js);
  }
  
  // Memory management
  
  var PAGE_SIZE = 16384;
  var WASM_PAGE_SIZE = 65536;
  var ASMJS_PAGE_SIZE = 16777216;
  var MIN_TOTAL_MEMORY = 16777216;
  
  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 updateGlobalBuffer(buf) {
    Module['buffer'] = buffer = buf;
  }
  
  function updateGlobalBufferViews() {
    Module['HEAP8'] = HEAP8 = new Int8Array(buffer);
    Module['HEAP16'] = HEAP16 = new Int16Array(buffer);
    Module['HEAP32'] = HEAP32 = new Int32Array(buffer);
    Module['HEAPU8'] = HEAPU8 = new Uint8Array(buffer);
    Module['HEAPU16'] = HEAPU16 = new Uint16Array(buffer);
    Module['HEAPU32'] = HEAPU32 = new Uint32Array(buffer);
    Module['HEAPF32'] = HEAPF32 = new Float32Array(buffer);
    Module['HEAPF64'] = HEAPF64 = new Float64Array(buffer);
  }
  
  var STATIC_BASE, STATICTOP, staticSealed; // static area
  var STACK_BASE, STACKTOP, STACK_MAX; // stack area
  var DYNAMIC_BASE, DYNAMICTOP_PTR; // dynamic area handled by sbrk
  
    STATIC_BASE = STATICTOP = STACK_BASE = STACKTOP = STACK_MAX = DYNAMIC_BASE = DYNAMICTOP_PTR = 0;
    staticSealed = false;
  
  
  // Initializes the stack cookie. Called at the startup of main and at the startup of each thread in pthreads mode.
  function writeStackCookie() {
    assert((STACK_MAX & 3) == 0);
    HEAPU32[(STACK_MAX >> 2)-1] = 0x02135467;
    HEAPU32[(STACK_MAX >> 2)-2] = 0x89BACDFE;
  }
  
  function checkStackCookie() {
    if (HEAPU32[(STACK_MAX >> 2)-1] != 0x02135467 || HEAPU32[(STACK_MAX >> 2)-2] != 0x89BACDFE) {
      abort('Stack overflow! Stack cookie has been overwritten, expected hex dwords 0x89BACDFE and 0x02135467, but received 0x' + HEAPU32[(STACK_MAX >> 2)-2].toString(16) + ' ' + HEAPU32[(STACK_MAX >> 2)-1].toString(16));
    }
    // Also test the global address 0 for integrity. This check is not compatible with SAFE_SPLIT_MEMORY though, since that mode already tests all address 0 accesses on its own.
    if (HEAP32[0] !== 0x63736d65 /* 'emsc' */) throw 'Runtime error: The application has corrupted its heap memory area (address zero)!';
  }
  
  function abortStackOverflow(allocSize) {
    abort('Stack overflow! Attempted to allocate ' + allocSize + ' bytes on the stack, but stack has only ' + (STACK_MAX - stackSave() + allocSize) + ' bytes available!');
  }
  
  
  function abortOnCannotGrowMemory() {
    abort('Cannot enlarge memory arrays. Either (1) compile with  -s TOTAL_MEMORY=X  with X higher than the current value ' + TOTAL_MEMORY + ', (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 enlargeMemory() {
    abortOnCannotGrowMemory();
  }
  
  
  var TOTAL_STACK = Module['TOTAL_STACK'] || 5242880;
  var TOTAL_MEMORY = Module['TOTAL_MEMORY'] || 16777216;
  if (TOTAL_MEMORY < TOTAL_STACK) err('TOTAL_MEMORY should be larger than TOTAL_STACK, was ' + TOTAL_MEMORY + '! (TOTAL_STACK=' + TOTAL_STACK + ')');
  
  // Initialize the runtime's memory
  // 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');
  
  
  
  // Use a provided buffer, if there is one, or else allocate a new one
  if (Module['buffer']) {
    buffer = Module['buffer'];
    assert(buffer.byteLength === TOTAL_MEMORY, 'provided buffer should be ' + TOTAL_MEMORY + ' bytes, but it is ' + buffer.byteLength);
  } else {
    // Use a WebAssembly memory where available
    if (typeof WebAssembly === 'object' && typeof WebAssembly.Memory === 'function') {
      assert(TOTAL_MEMORY % WASM_PAGE_SIZE === 0);
      Module['wasmMemory'] = new WebAssembly.Memory({ 'initial': TOTAL_MEMORY / WASM_PAGE_SIZE, 'maximum': TOTAL_MEMORY / WASM_PAGE_SIZE });
      buffer = Module['wasmMemory'].buffer;
    } else
    {
      buffer = new ArrayBuffer(TOTAL_MEMORY);
    }
    assert(buffer.byteLength === TOTAL_MEMORY);
    Module['buffer'] = buffer;
  }
  updateGlobalBufferViews();
  
  
  function getTotalMemory() {
    return TOTAL_MEMORY;
  }
  
  // Endianness check (note: assumes compiler arch was little-endian)
    HEAP32[0] = 0x63736d65; /* 'emsc' */
  HEAP16[1] = 0x6373;
  if (HEAPU8[2] !== 0x73 || HEAPU8[3] !== 0x63) throw 'Runtime error: expected the system to be little-endian!';
  
  function callRuntimeCallbacks(callbacks) {
    while(callbacks.length > 0) {
      var callback = callbacks.shift();
      if (typeof callback == 'function') {
        callback();
        continue;
      }
      var func = callback.func;
      if (typeof func === 'number') {
        if (callback.arg === undefined) {
          Module['dynCall_v'](func);
        } else {
          Module['dynCall_vi'](func, callback.arg);
        }
      } else {
        func(callback.arg === undefined ? null : callback.arg);
      }
    }
  }
  
  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() {
    // compatibility - merge in anything from Module['preRun'] at this time
    if (Module['preRun']) {
      if (typeof Module['preRun'] == 'function') Module['preRun'] = [Module['preRun']];
      while (Module['preRun'].length) {
        addOnPreRun(Module['preRun'].shift());
      }
    }
    callRuntimeCallbacks(__ATPRERUN__);
  }
  
  function ensureInitRuntime() {
    checkStackCookie();
    if (runtimeInitialized) return;
    runtimeInitialized = true;
    callRuntimeCallbacks(__ATINIT__);
  }
  
  function preMain() {
    checkStackCookie();
    callRuntimeCallbacks(__ATMAIN__);
  }
  
  function exitRuntime() {
    checkStackCookie();
    callRuntimeCallbacks(__ATEXIT__);
    runtimeExited = true;
  }
  
  function postRun() {
    checkStackCookie();
    // compatibility - merge in anything from Module['postRun'] at this time
    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);
  }
  
  // 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 */
  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);
  }
  
  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;
  }
  
  function unSign(value, bits, ignore) {
    if (value >= 0) {
      return value;
    }
    return bits <= 32 ? 2*Math.abs(1 << (bits-1)) + value // Need some trickery, since if bits == 32, we are right at the limit of the bits JS uses in bitshifts
                      : Math.pow(2, bits)         + value;
  }
  function reSign(value, bits, ignore) {
    if (value <= 0) {
      return value;
    }
    var half = bits <= 32 ? Math.abs(1 << (bits-1)) // abs is needed if bits == 32
                          : Math.pow(2, bits-1);
    if (value >= half && (bits <= 32 || value > half)) { // for huge values, we can hit the precision limit and always get true here. so don't do that
                                                         // but, in general there is no perfect solution here. With 64-bit ints, we get rounding and errors
                                                         // TODO: In i64 mode 1, resign the two parts separately and safely
      value = -2*half + value; // Cannot bitshift half, as it may be at the limit of the bits JS uses in bitshifts
    }
    return value;
  }
  
  assert(Math['imul'] && Math['fround'] && Math['clz32'] && Math['trunc'], 'this is a legacy browser, build with LEGACY_VM_SUPPORT');
  
  var Math_abs = Math.abs;
  var Math_cos = Math.cos;
  var Math_sin = Math.sin;
  var Math_tan = Math.tan;
  var Math_acos = Math.acos;
  var Math_asin = Math.asin;
  var Math_atan = Math.atan;
  var Math_atan2 = Math.atan2;
  var Math_exp = Math.exp;
  var Math_log = Math.log;
  var Math_sqrt = Math.sqrt;
  var Math_ceil = Math.ceil;
  var Math_floor = Math.floor;
  var Math_pow = Math.pow;
  var Math_imul = Math.imul;
  var Math_fround = Math.fround;
  var Math_round = Math.round;
  var Math_min = Math.min;
  var Math_max = Math.max;
  var Math_clz32 = Math.clz32;
  var Math_trunc = Math.trunc;
  
  // 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();
    }
    return id;
  }
  
  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
  
  
  
  var memoryInitializer = null;
  
  
  
  
  
  
  // Copyright 2017 The Emscripten Authors.  All rights reserved.
  // Emscripten is available under two separate licenses, the MIT license and the
  // University of Illinois/NCSA Open Source License.  Both these licenses can be
  // found in the LICENSE file.
  
  // 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 String.prototype.startsWith ?
        filename.startsWith(dataURIPrefix) :
        filename.indexOf(dataURIPrefix) === 0;
  }
  
  
  
  
  function integrateWasmJS() {
    // wasm.js has several methods for creating the compiled code module here:
    //  * 'native-wasm' : use native WebAssembly support in the browser
    //  * 'interpret-s-expr': load s-expression code from a .wast and interpret
    //  * 'interpret-binary': load binary wasm and interpret
    //  * 'interpret-asm2wasm': load asm.js code, translate to wasm, and interpret
    //  * 'asmjs': no wasm, just load the asm.js code and use that (good for testing)
    // The method is set at compile time (BINARYEN_METHOD)
    // The method can be a comma-separated list, in which case, we will try the
    // options one by one. Some of them can fail gracefully, and then we can try
    // the next.
  
    // inputs
  
    var method = 'native-wasm';
  
    var wasmTextFile = 'index.wast';
    var wasmBinaryFile = 'index.wasm';
    var asmjsCodeFile = 'index.temp.asm.js';
  
    if (!isDataURI(wasmTextFile)) {
      wasmTextFile = locateFile(wasmTextFile);
    }
    if (!isDataURI(wasmBinaryFile)) {
      wasmBinaryFile = locateFile(wasmBinaryFile);
    }
    if (!isDataURI(asmjsCodeFile)) {
      asmjsCodeFile = locateFile(asmjsCodeFile);
    }
  
    // utilities
  
    var wasmPageSize = 64*1024;
  
    var info = {
      'global': null,
      'env': null,
      'asm2wasm': asm2wasmImports,
      'parent': Module // Module inside wasm-js.cpp refers to wasm-js.cpp; this allows access to the outside program.
    };
  
    var exports = null;
  
  
    function mergeMemory(newBuffer) {
      // The wasm instance creates its memory. But static init code might have written to
      // buffer already, including the mem init file, and we must copy it over in a proper merge.
      // TODO: avoid this copy, by avoiding such static init writes
      // TODO: in shorter term, just copy up to the last static init write
      var oldBuffer = Module['buffer'];
      if (newBuffer.byteLength < oldBuffer.byteLength) {
        err('the new buffer in mergeMemory is smaller than the previous one. in native wasm, we should grow memory here');
      }
      var oldView = new Int8Array(oldBuffer);
      var newView = new Int8Array(newBuffer);
  
  
      newView.set(oldView);
      updateGlobalBuffer(newBuffer);
      updateGlobalBufferViews();
    }
  
    function fixImports(imports) {
      return imports;
    }
  
    function getBinary() {
      try {
        if (Module['wasmBinary']) {
          return new Uint8Array(Module['wasmBinary']);
        }
        if (Module['readBinary']) {
          return Module['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 (!Module['wasmBinary'] && (ENVIRONMENT_IS_WEB || ENVIRONMENT_IS_WORKER) && typeof fetch === 'function') {
        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 new Promise(function(resolve, reject) {
        resolve(getBinary());
      });
    }
  
    // do-method functions
  
  
    function doNativeWasm(global, env, providedBuffer) {
      if (typeof WebAssembly !== 'object') {
        // when the method is just native-wasm, our error message can be very specific
        abort('No WebAssembly support found. Build with -s WASM=0 to target JavaScript instead.');
        err('no native wasm support detected');
        return false;
      }
      // prepare memory import
      if (!(Module['wasmMemory'] instanceof WebAssembly.Memory)) {
        err('no native wasm Memory in use');
        return false;
      }
      env['memory'] = Module['wasmMemory'];
      // Load the wasm module and create an instance of using native support in the JS engine.
      info['global'] = {
        'NaN': NaN,
        'Infinity': Infinity
      };
      info['global.Math'] = Math;
      info['env'] = env;
      // handle a generated wasm instance, receiving its exports and
      // performing other necessary setup
      function receiveInstance(instance, module) {
        exports = instance.exports;
        if (exports.memory) mergeMemory(exports.memory);
        Module['asm'] = exports;
        Module["usingWasm"] = true;
        removeRunDependency('wasm-instantiate');
      }
      addRunDependency('wasm-instantiate');
  
      // 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 {
          return Module['instantiateWasm'](info, receiveInstance);
        } catch(e) {
          err('Module.instantiateWasm callback failed with error: ' + e);
          return false;
        }
      }
  
      // 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;
        receiveInstance(output['instance'], output['module']);
      }
      function instantiateArrayBuffer(receiver) {
        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.
      if (!Module['wasmBinary'] &&
          typeof WebAssembly.instantiateStreaming === 'function' &&
          !isDataURI(wasmBinaryFile) &&
          typeof fetch === 'function') {
        WebAssembly.instantiateStreaming(fetch(wasmBinaryFile, { credentials: 'same-origin' }), info)
          .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');
            instantiateArrayBuffer(receiveInstantiatedSource);
          });
      } else {
        instantiateArrayBuffer(receiveInstantiatedSource);
      }
      return {}; // no exports yet; we'll fill them in later
    }
  
  
    // We may have a preloaded value in Module.asm, save it
    Module['asmPreload'] = Module['asm'];
  
    // Memory growth integration code
  
    var asmjsReallocBuffer = Module['reallocBuffer'];
  
    var wasmReallocBuffer = function(size) {
      var PAGE_MULTIPLE = Module["usingWasm"] ? WASM_PAGE_SIZE : ASMJS_PAGE_SIZE; // In wasm, heap size must be a multiple of 64KB. In asm.js, they need to be multiples of 16MB.
      size = alignUp(size, PAGE_MULTIPLE); // round up to wasm page size
      var old = Module['buffer'];
      var oldSize = old.byteLength;
      if (Module["usingWasm"]) {
        // native wasm support
        try {
          var result = Module['wasmMemory'].grow((size - oldSize) / wasmPageSize); // .grow() takes a delta compared to the previous size
          if (result !== (-1 | 0)) {
            // success in native wasm memory growth, get the buffer from the memory
            return Module['buffer'] = Module['wasmMemory'].buffer;
          } else {
            return null;
          }
        } catch(e) {
          console.error('Module.reallocBuffer: Attempted to grow from ' + oldSize  + ' bytes to ' + size + ' bytes, but got error: ' + e);
          return null;
        }
      }
    };
  
    Module['reallocBuffer'] = function(size) {
      if (finalMethod === 'asmjs') {
        return asmjsReallocBuffer(size);
      } else {
        return wasmReallocBuffer(size);
      }
    };
  
    // we may try more than one; this is the final one, that worked and we are using
    var finalMethod = '';
  
    // Provide an "asm.js function" for the application, called to "link" the asm.js module. We instantiate
    // the wasm module at that time, and it receives imports and provides exports and so forth, the app
    // doesn't need to care that it is wasm or olyfilled wasm or asm.js.
  
    Module['asm'] = function(global, env, providedBuffer) {
      env = fixImports(env);
  
      // import table
      if (!env['table']) {
        var TABLE_SIZE = Module['wasmTableSize'];
        if (TABLE_SIZE === undefined) TABLE_SIZE = 1024; // works in binaryen interpreter at least
        var MAX_TABLE_SIZE = Module['wasmMaxTableSize'];
        if (typeof WebAssembly === 'object' && typeof WebAssembly.Table === 'function') {
          if (MAX_TABLE_SIZE !== undefined) {
            env['table'] = new WebAssembly.Table({ 'initial': TABLE_SIZE, 'maximum': MAX_TABLE_SIZE, 'element': 'anyfunc' });
          } else {
            env['table'] = new WebAssembly.Table({ 'initial': TABLE_SIZE, element: 'anyfunc' });
          }
        } else {
          env['table'] = new Array(TABLE_SIZE); // works in binaryen interpreter at least
        }
        Module['wasmTable'] = env['table'];
      }
  
      if (!env['memoryBase']) {
        env['memoryBase'] = Module['STATIC_BASE']; // tell the memory segments where to place themselves
      }
      if (!env['tableBase']) {
        env['tableBase'] = 0; // table starts at 0 by default, in dynamic linking this will change
      }
  
      // try the methods. each should return the exports if it succeeded
  
      var exports;
      exports = doNativeWasm(global, env, providedBuffer);
  
      assert(exports, 'no binaryen method succeeded. consider enabling more options, like interpreting, if you want that: http://kripken.github.io/emscripten-site/docs/compiling/WebAssembly.html#binaryen-methods');
  
  
      return exports;
    };
  
    var methodHandler = Module['asm']; // note our method handler, as we may modify Module['asm'] later
  }
  
  integrateWasmJS();
  
  // === Body ===
  
  var ASM_CONSTS = [];
  
  
  
  
  
  STATIC_BASE = GLOBAL_BASE;
  
  STATICTOP = STATIC_BASE + 24000;
  /* global initializers */  __ATINIT__.push({ func: function() { __GLOBAL__I_000101() } }, { func: function() { __GLOBAL__sub_I_iostream_cpp() } });
  
  
  
  
  
  
  
  var STATIC_BUMP = 24000;
  Module["STATIC_BASE"] = STATIC_BASE;
  Module["STATIC_BUMP"] = STATIC_BUMP;
  
  /* no memory initializer */
  var tempDoublePtr = STATICTOP; STATICTOP += 16;
  
  assert(tempDoublePtr % 8 == 0);
  
  function copyTempFloat(ptr) { // functions, because inlining this code increases code size too much
  
    HEAP8[tempDoublePtr] = HEAP8[ptr];
  
    HEAP8[tempDoublePtr+1] = HEAP8[ptr+1];
  
    HEAP8[tempDoublePtr+2] = HEAP8[ptr+2];
  
    HEAP8[tempDoublePtr+3] = HEAP8[ptr+3];
  
  }
  
  function copyTempDouble(ptr) {
  
    HEAP8[tempDoublePtr] = HEAP8[ptr];
  
    HEAP8[tempDoublePtr+1] = HEAP8[ptr+1];
  
    HEAP8[tempDoublePtr+2] = HEAP8[ptr+2];
  
    HEAP8[tempDoublePtr+3] = HEAP8[ptr+3];
  
    HEAP8[tempDoublePtr+4] = HEAP8[ptr+4];
  
    HEAP8[tempDoublePtr+5] = HEAP8[ptr+5];
  
    HEAP8[tempDoublePtr+6] = HEAP8[ptr+6];
  
    HEAP8[tempDoublePtr+7] = HEAP8[ptr+7];
  
  }
  
  // {{PRE_LIBRARY}}
  
  
    function ___cxa_allocate_exception(size) {
        return _malloc(size);
      }
  
    
    var EXCEPTIONS={last:0,caught:[],infos:{},deAdjust:function (adjusted) {
          if (!adjusted || EXCEPTIONS.infos[adjusted]) return adjusted;
          for (var key in EXCEPTIONS.infos) {
            var ptr = +key; // the iteration key is a string, and if we throw this, it must be an integer as that is what we look for
            var info = EXCEPTIONS.infos[ptr];
            if (info.adjusted === adjusted) {
              return ptr;
            }
          }
          return adjusted;
        },addRef:function (ptr) {
          if (!ptr) return;
          var info = EXCEPTIONS.infos[ptr];
          info.refcount++;
        },decRef:function (ptr) {
          if (!ptr) return;
          var info = EXCEPTIONS.infos[ptr];
          assert(info.refcount > 0);
          info.refcount--;
          // A rethrown exception can reach refcount 0; it must not be discarded
          // Its next handler will clear the rethrown flag and addRef it, prior to
          // final decRef and destruction here
          if (info.refcount === 0 && !info.rethrown) {
            if (info.destructor) {
              Module['dynCall_vi'](info.destructor, ptr);
            }
            delete EXCEPTIONS.infos[ptr];
            ___cxa_free_exception(ptr);
          }
        },clearRef:function (ptr) {
          if (!ptr) return;
          var info = EXCEPTIONS.infos[ptr];
          info.refcount = 0;
        }};function ___cxa_begin_catch(ptr) {
        var info = EXCEPTIONS.infos[ptr];
        if (info && !info.caught) {
          info.caught = true;
          __ZSt18uncaught_exceptionv.uncaught_exception--;
        }
        if (info) info.rethrown = false;
        EXCEPTIONS.caught.push(ptr);
        EXCEPTIONS.addRef(EXCEPTIONS.deAdjust(ptr));
        return ptr;
      }
  
    
    
    function ___resumeException(ptr) {
        if (!EXCEPTIONS.last) { EXCEPTIONS.last = ptr; }
        throw ptr + " - Exception catching is disabled, this exception cannot be caught. Compile with -s DISABLE_EXCEPTION_CATCHING=0 or DISABLE_EXCEPTION_CATCHING=2 to catch.";
      }function ___cxa_find_matching_catch() {
        var thrown = EXCEPTIONS.last;
        if (!thrown) {
          // just pass through the null ptr
          return ((setTempRet0(0),0)|0);
        }
        var info = EXCEPTIONS.infos[thrown];
        var throwntype = info.type;
        if (!throwntype) {
          // just pass through the thrown ptr
          return ((setTempRet0(0),thrown)|0);
        }
        var typeArray = Array.prototype.slice.call(arguments);
    
        var pointer = Module['___cxa_is_pointer_type'](throwntype);
        // can_catch receives a **, add indirection
        if (!___cxa_find_matching_catch.buffer) ___cxa_find_matching_catch.buffer = _malloc(4);
        HEAP32[((___cxa_find_matching_catch.buffer)>>2)]=thrown;
        thrown = ___cxa_find_matching_catch.buffer;
        // The different catch blocks are denoted by different types.
        // Due to inheritance, those types may not precisely match the
        // type of the thrown object. Find one which matches, and
        // return the type of the catch block which should be called.
        for (var i = 0; i < typeArray.length; i++) {
          if (typeArray[i] && Module['___cxa_can_catch'](typeArray[i], throwntype, thrown)) {
            thrown = HEAP32[((thrown)>>2)]; // undo indirection
            info.adjusted = thrown;
            return ((setTempRet0(typeArray[i]),thrown)|0);
          }
        }
        // Shouldn't happen unless we have bogus data in typeArray
        // or encounter a type for which emscripten doesn't have suitable
        // typeinfo defined. Best-efforts match just in case.
        thrown = HEAP32[((thrown)>>2)]; // undo indirection
        return ((setTempRet0(throwntype),thrown)|0);
      }function ___cxa_throw(ptr, type, destructor) {
        EXCEPTIONS.infos[ptr] = {
          ptr: ptr,
          adjusted: ptr,
          type: type,
          destructor: destructor,
          refcount: 0,
          caught: false,
          rethrown: false
        };
        EXCEPTIONS.last = ptr;
        if (!("uncaught_exception" in __ZSt18uncaught_exceptionv)) {
          __ZSt18uncaught_exceptionv.uncaught_exception = 1;
        } else {
          __ZSt18uncaught_exceptionv.uncaught_exception++;
        }
        throw ptr + " - Exception catching is disabled, this exception cannot be caught. Compile with -s DISABLE_EXCEPTION_CATCHING=0 or DISABLE_EXCEPTION_CATCHING=2 to catch.";
      }
  
    function ___cxa_uncaught_exception() {
        return !!__ZSt18uncaught_exceptionv.uncaught_exception;
      }
  
    function ___gxx_personality_v0() {
      }
  
    function ___lock() {}
  
    
    var ERRNO_CODES={EPERM:1,ENOENT:2,ESRCH:3,EINTR:4,EIO:5,ENXIO:6,E2BIG:7,ENOEXEC:8,EBADF:9,ECHILD:10,EAGAIN:11,EWOULDBLOCK:11,ENOMEM:12,EACCES:13,EFAULT:14,ENOTBLK:15,EBUSY:16,EEXIST:17,EXDEV:18,ENODEV:19,ENOTDIR:20,EISDIR:21,EINVAL:22,ENFILE:23,EMFILE:24,ENOTTY:25,ETXTBSY:26,EFBIG:27,ENOSPC:28,ESPIPE:29,EROFS:30,EMLINK:31,EPIPE:32,EDOM:33,ERANGE:34,ENOMSG:42,EIDRM:43,ECHRNG:44,EL2NSYNC:45,EL3HLT:46,EL3RST:47,ELNRNG:48,EUNATCH:49,ENOCSI:50,EL2HLT:51,EDEADLK:35,ENOLCK:37,EBADE:52,EBADR:53,EXFULL:54,ENOANO:55,EBADRQC:56,EBADSLT:57,EDEADLOCK:35,EBFONT:59,ENOSTR:60,ENODATA:61,ETIME:62,ENOSR:63,ENONET:64,ENOPKG:65,EREMOTE:66,ENOLINK:67,EADV:68,ESRMNT:69,ECOMM:70,EPROTO:71,EMULTIHOP:72,EDOTDOT:73,EBADMSG:74,ENOTUNIQ:76,EBADFD:77,EREMCHG:78,ELIBACC:79,ELIBBAD:80,ELIBSCN:81,ELIBMAX:82,ELIBEXEC:83,ENOSYS:38,ENOTEMPTY:39,ENAMETOOLONG:36,ELOOP:40,EOPNOTSUPP:95,EPFNOSUPPORT:96,ECONNRESET:104,ENOBUFS:105,EAFNOSUPPORT:97,EPROTOTYPE:91,ENOTSOCK:88,ENOPROTOOPT:92,ESHUTDOWN:108,ECONNREFUSED:111,EADDRINUSE:98,ECONNABORTED:103,ENETUNREACH:101,ENETDOWN:100,ETIMEDOUT:110,EHOSTDOWN:112,EHOSTUNREACH:113,EINPROGRESS:115,EALREADY:114,EDESTADDRREQ:89,EMSGSIZE:90,EPROTONOSUPPORT:93,ESOCKTNOSUPPORT:94,EADDRNOTAVAIL:99,ENETRESET:102,EISCONN:106,ENOTCONN:107,ETOOMANYREFS:109,EUSERS:87,EDQUOT:122,ESTALE:116,ENOTSUP:95,ENOMEDIUM:123,EILSEQ:84,EOVERFLOW:75,ECANCELED:125,ENOTRECOVERABLE:131,EOWNERDEAD:130,ESTRPIPE:86};
    
    function ___setErrNo(value) {
        if (Module['___errno_location']) HEAP32[((Module['___errno_location']())>>2)]=value;
        else err('failed to set errno from JS');
        return value;
      }function ___map_file(pathname, size) {
        ___setErrNo(ERRNO_CODES.EPERM);
        return -1;
      }
  
    
    
    
    var ERRNO_MESSAGES={0:"Success",1:"Not super-user",2:"No such file or directory",3:"No such process",4:"Interrupted system call",5:"I/O error",6:"No such device or address",7:"Arg list too long",8:"Exec format error",9:"Bad file number",10:"No children",11:"No more processes",12:"Not enough core",13:"Permission denied",14:"Bad address",15:"Block device required",16:"Mount device busy",17:"File exists",18:"Cross-device link",19:"No such device",20:"Not a directory",21:"Is a directory",22:"Invalid argument",23:"Too many open files in system",24:"Too many open files",25:"Not a typewriter",26:"Text file busy",27:"File too large",28:"No space left on device",29:"Illegal seek",30:"Read only file system",31:"Too many links",32:"Broken pipe",33:"Math arg out of domain of func",34:"Math result not representable",35:"File locking deadlock error",36:"File or path name too long",37:"No record locks available",38:"Function not implemented",39:"Directory not empty",40:"Too many symbolic links",42:"No message of desired type",43:"Identifier removed",44:"Channel number out of range",45:"Level 2 not synchronized",46:"Level 3 halted",47:"Level 3 reset",48:"Link number out of range",49:"Protocol driver not attached",50:"No CSI structure available",51:"Level 2 halted",52:"Invalid exchange",53:"Invalid request descriptor",54:"Exchange full",55:"No anode",56:"Invalid request code",57:"Invalid slot",59:"Bad font file fmt",60:"Device not a stream",61:"No data (for no delay io)",62:"Timer expired",63:"Out of streams resources",64:"Machine is not on the network",65:"Package not installed",66:"The object is remote",67:"The link has been severed",68:"Advertise error",69:"Srmount error",70:"Communication error on send",71:"Protocol error",72:"Multihop attempted",73:"Cross mount point (not really error)",74:"Trying to read unreadable message",75:"Value too large for defined data type",76:"Given log. name not unique",77:"f.d. invalid for this operation",78:"Remote address changed",79:"Can   access a needed shared lib",80:"Accessing a corrupted shared lib",81:".lib section in a.out corrupted",82:"Attempting to link in too many libs",83:"Attempting to exec a shared library",84:"Illegal byte sequence",86:"Streams pipe error",87:"Too many users",88:"Socket operation on non-socket",89:"Destination address required",90:"Message too long",91:"Protocol wrong type for socket",92:"Protocol not available",93:"Unknown protocol",94:"Socket type not supported",95:"Not supported",96:"Protocol family not supported",97:"Address family not supported by protocol family",98:"Address already in use",99:"Address not available",100:"Network interface is not configured",101:"Network is unreachable",102:"Connection reset by network",103:"Connection aborted",104:"Connection reset by peer",105:"No buffer space available",106:"Socket is already connected",107:"Socket is not connected",108:"Can't send after socket shutdown",109:"Too many references",110:"Connection timed out",111:"Connection refused",112:"Host is down",113:"Host is unreachable",114:"Socket already connected",115:"Connection already in progress",116:"Stale file handle",122:"Quota exceeded",123:"No medium (in tape drive)",125:"Operation canceled",130:"Previous owner died",131:"State not recoverable"};
    
    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 '/';
          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);
        },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.resolve(from).substr(1);
          to = PATH.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/kripken/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/kripken/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(ERRNO_CODES.ENODEV);
            }
            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(ERRNO_CODES.ENXIO);
            }
            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(ERRNO_CODES.EIO);
              }
              if (result === undefined && bytesRead === 0) {
                throw new FS.ErrnoError(ERRNO_CODES.EAGAIN);
              }
              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(ERRNO_CODES.ENXIO);
            }
            for (var i = 0; i < length; i++) {
              try {
                stream.tty.ops.put_char(stream.tty, buffer[offset+i]);
              } catch (e) {
                throw new FS.ErrnoError(ERRNO_CODES.EIO);
              }
            }
            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 = new Buffer(BUFSIZE);
                var bytesRead = 0;
    
                var isPosixPlatform = (process.platform != 'win32'); // Node doesn't offer a direct check, so test by exclusion
    
                var fd = process.stdin.fd;
                if (isPosixPlatform) {
                  // Linux and Mac cannot use process.stdin.fd (which isn't set up as sync)
                  var usingDevice = false;
                  try {
                    fd = fs.openSync('/dev/stdin', 'r');
                    usingDevice = true;
                  } catch (e) {}
                }
    
                try {
                  bytesRead = fs.readSync(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 (usingDevice) { fs.closeSync(fd); }
                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 = [];
            }
          }}};
    
    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(ERRNO_CODES.EPERM);
          }
          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;
          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) {
          // If we are asked to expand the size of a file that already exists, revert to using a standard JS array to store the file
          // instead of a typed array. This makes resizing the array more flexible because we can just .push() elements at the back to
          // increase the size.
          if (node.contents && node.contents.subarray && newCapacity > node.contents.length) {
            node.contents = MEMFS.getFileDataAsRegularArray(node);
            node.usedBytes = node.contents.length; // We might be writing to a lazy-loaded file which had overridden this property, so force-reset it.
          }
    
          if (!node.contents || node.contents.subarray) { // Keep using a typed array if creating a new storage, or if old one was a typed array as well.
            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;
          }
          // Not using a typed array to back the file storage. Use a standard JS array instead.
          if (!node.contents && newCapacity > 0) node.contents = [];
          while (node.contents.length < newCapacity) node.contents.push(0);
        },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(new ArrayBuffer(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[ERRNO_CODES.ENOENT];
          },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(ERRNO_CODES.ENOTEMPTY);
                }
              }
            }
            // 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(ERRNO_CODES.ENOTEMPTY);
            }
            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(ERRNO_CODES.EINVAL);
            }
            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) {
    
            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 = new Uint8Array(buffer.subarray(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) node.contents.set(buffer.subarray(offset, offset + length), position); // Use typed array write if available.
            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) {  // SEEK_CUR.
              position += stream.position;
            } else if (whence === 2) {  // SEEK_END.
              if (FS.isFile(stream.node.mode)) {
                position += stream.node.usedBytes;
              }
            }
            if (position < 0) {
              throw new FS.ErrnoError(ERRNO_CODES.EINVAL);
            }
            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, buffer, offset, length, position, prot, flags) {
            if (!FS.isFile(stream.node.mode)) {
              throw new FS.ErrnoError(ERRNO_CODES.ENODEV);
            }
            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 || contents.buffer === 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 < stream.node.usedBytes) {
                if (contents.subarray) {
                  contents = contents.subarray(position, position + length);
                } else {
                  contents = Array.prototype.slice.call(contents, position, position + length);
                }
              }
              allocated = true;
              ptr = _malloc(length);
              if (!ptr) {
                throw new FS.ErrnoError(ERRNO_CODES.ENOMEM);
              }
              buffer.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(ERRNO_CODES.ENODEV);
            }
            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 IDBFS={dbs:{},indexedDB:function () {
          if (typeof indexedDB !== 'undefined') return indexedDB;
          var ret = null;
          if (typeof window === 'object') ret = window.indexedDB || window.mozIndexedDB || window.webkitIndexedDB || window.msIndexedDB;
          assert(ret, 'IDBFS used, but indexedDB not supported');
          return ret;
        },DB_VERSION:21,DB_STORE_NAME:"FILE_DATA",mount:function (mount) {
          // reuse all of the core MEMFS functionality
          return MEMFS.mount.apply(null, arguments);
        },syncfs:function (mount, populate, callback) {
          IDBFS.getLocalSet(mount, function(err, local) {
            if (err) return callback(err);
    
            IDBFS.getRemoteSet(mount, function(err, remote) {
              if (err) return callback(err);
    
              var src = populate ? remote : local;
              var dst = populate ? local : remote;
    
              IDBFS.reconcile(src, dst, callback);
            });
          });
        },getDB:function (name, callback) {
          // check the cache first
          var db = IDBFS.dbs[name];
          if (db) {
            return callback(null, db);
          }
    
          var req;
          try {
            req = IDBFS.indexedDB().open(name, IDBFS.DB_VERSION);
          } catch (e) {
            return callback(e);
          }
          if (!req) {
            return callback("Unable to connect to IndexedDB");
          }
          req.onupgradeneeded = function(e) {
            var db = e.target.result;
            var transaction = e.target.transaction;
    
            var fileStore;
    
            if (db.objectStoreNames.contains(IDBFS.DB_STORE_NAME)) {
              fileStore = transaction.objectStore(IDBFS.DB_STORE_NAME);
            } else {
              fileStore = db.createObjectStore(IDBFS.DB_STORE_NAME);
            }
    
            if (!fileStore.indexNames.contains('timestamp')) {
              fileStore.createIndex('timestamp', 'timestamp', { unique: false });
            }
          };
          req.onsuccess = function() {
            db = req.result;
    
            // add to the cache
            IDBFS.dbs[name] = db;
            callback(null, db);
          };
          req.onerror = function(e) {
            callback(this.error);
            e.preventDefault();
          };
        },getLocalSet:function (mount, callback) {
          var entries = {};
    
          function isRealDir(p) {
            return p !== '.' && p !== '..';
          };
          function toAbsolute(root) {
            return function(p) {
              return PATH.join2(root, p);
            }
          };
    
          var check = FS.readdir(mount.mountpoint).filter(isRealDir).map(toAbsolute(mount.mountpoint));
    
          while (check.length) {
            var path = check.pop();
            var stat;
    
            try {
              stat = FS.stat(path);
            } catch (e) {
              return callback(e);
            }
    
            if (FS.isDir(stat.mode)) {
              check.push.apply(check, FS.readdir(path).filter(isRealDir).map(toAbsolute(path)));
            }
    
            entries[path] = { timestamp: stat.mtime };
          }
    
          return callback(null, { type: 'local', entries: entries });
        },getRemoteSet:function (mount, callback) {
          var entries = {};
    
          IDBFS.getDB(mount.mountpoint, function(err, db) {
            if (err) return callback(err);
    
            try {
              var transaction = db.transaction([IDBFS.DB_STORE_NAME], 'readonly');
              transaction.onerror = function(e) {
                callback(this.error);
                e.preventDefault();
              };
    
              var store = transaction.objectStore(IDBFS.DB_STORE_NAME);
              var index = store.index('timestamp');
    
              index.openKeyCursor().onsuccess = function(event) {
                var cursor = event.target.result;
    
                if (!cursor) {
                  return callback(null, { type: 'remote', db: db, entries: entries });
                }
    
                entries[cursor.primaryKey] = { timestamp: cursor.key };
    
                cursor.continue();
              };
            } catch (e) {
              return callback(e);
            }
          });
        },loadLocalEntry:function (path, callback) {
          var stat, node;
    
          try {
            var lookup = FS.lookupPath(path);
            node = lookup.node;
            stat = FS.stat(path);
          } catch (e) {
            return callback(e);
          }
    
          if (FS.isDir(stat.mode)) {
            return callback(null, { timestamp: stat.mtime, mode: stat.mode });
          } else if (FS.isFile(stat.mode)) {
            // Performance consideration: storing a normal JavaScript array to a IndexedDB is much slower than storing a typed array.
            // Therefore always convert the file contents to a typed array first before writing the data to IndexedDB.
            node.contents = MEMFS.getFileDataAsTypedArray(node);
            return callback(null, { timestamp: stat.mtime, mode: stat.mode, contents: node.contents });
          } else {
            return callback(new Error('node type not supported'));
          }
        },storeLocalEntry:function (path, entry, callback) {
          try {
            if (FS.isDir(entry.mode)) {
              FS.mkdir(path, entry.mode);
            } else if (FS.isFile(entry.mode)) {
              FS.writeFile(path, entry.contents, { canOwn: true });
            } else {
              return callback(new Error('node type not supported'));
            }
    
            FS.chmod(path, entry.mode);
            FS.utime(path, entry.timestamp, entry.timestamp);
          } catch (e) {
            return callback(e);
          }
    
          callback(null);
        },removeLocalEntry:function (path, callback) {
          try {
            var lookup = FS.lookupPath(path);
            var stat = FS.stat(path);
    
            if (FS.isDir(stat.mode)) {
              FS.rmdir(path);
            } else if (FS.isFile(stat.mode)) {
              FS.unlink(path);
            }
          } catch (e) {
            return callback(e);
          }
    
          callback(null);
        },loadRemoteEntry:function (store, path, callback) {
          var req = store.get(path);
          req.onsuccess = function(event) { callback(null, event.target.result); };
          req.onerror = function(e) {
            callback(this.error);
            e.preventDefault();
          };
        },storeRemoteEntry:function (store, path, entry, callback) {
          var req = store.put(entry, path);
          req.onsuccess = function() { callback(null); };
          req.onerror = function(e) {
            callback(this.error);
            e.preventDefault();
          };
        },removeRemoteEntry:function (store, path, callback) {
          var req = store.delete(path);
          req.onsuccess = function() { callback(null); };
          req.onerror = function(e) {
            callback(this.error);
            e.preventDefault();
          };
        },reconcile:function (src, dst, callback) {
          var total = 0;
    
          var create = [];
          Object.keys(src.entries).forEach(function (key) {
            var e = src.entries[key];
            var e2 = dst.entries[key];
            if (!e2 || e.timestamp > e2.timestamp) {
              create.push(key);
              total++;
            }
          });
    
          var remove = [];
          Object.keys(dst.entries).forEach(function (key) {
            var e = dst.entries[key];
            var e2 = src.entries[key];
            if (!e2) {
              remove.push(key);
              total++;
            }
          });
    
          if (!total) {
            return callback(null);
          }
    
          var errored = false;
          var completed = 0;
          var db = src.type === 'remote' ? src.db : dst.db;
          var transaction = db.transaction([IDBFS.DB_STORE_NAME], 'readwrite');
          var store = transaction.objectStore(IDBFS.DB_STORE_NAME);
    
          function done(err) {
            if (err) {
              if (!done.errored) {
                done.errored = true;
                return callback(err);
              }
              return;
            }
            if (++completed >= total) {
              return callback(null);
            }
          };
    
          transaction.onerror = function(e) {
            done(this.error);
            e.preventDefault();
          };
    
          // sort paths in ascending order so directory entries are created
          // before the files inside them
          create.sort().forEach(function (path) {
            if (dst.type === 'local') {
              IDBFS.loadRemoteEntry(store, path, function (err, entry) {
                if (err) return done(err);
                IDBFS.storeLocalEntry(path, entry, done);
              });
            } else {
              IDBFS.loadLocalEntry(path, function (err, entry) {
                if (err) return done(err);
                IDBFS.storeRemoteEntry(store, path, entry, done);
              });
            }
          });
    
          // sort paths in descending order so files are deleted before their
          // parent directories
          remove.sort().reverse().forEach(function(path) {
            if (dst.type === 'local') {
              IDBFS.removeLocalEntry(path, done);
            } else {
              IDBFS.removeRemoteEntry(store, path, done);
            }
          });
        }};
    
    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"],
            "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);
        },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(ERRNO_CODES.EINVAL);
          }
          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(ERRNO_CODES[e.code]);
          }
          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(ERRNO_CODES.EINVAL);
          }
        },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(ERRNO_CODES[e.code]);
            }
            // 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(ERRNO_CODES[e.code]);
            }
          },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(ERRNO_CODES[e.code]);
            }
            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(ERRNO_CODES[e.code]);
            }
          },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(ERRNO_CODES[e.code]);
            }
          },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(ERRNO_CODES[e.code]);
            }
          },readdir:function (node) {
            var path = NODEFS.realPath(node);
            try {
              return fs.readdirSync(path);
            } catch (e) {
              if (!e.code) throw e;
              throw new FS.ErrnoError(ERRNO_CODES[e.code]);
            }
          },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(ERRNO_CODES[e.code]);
            }
          },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(ERRNO_CODES[e.code]);
            }
          }},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(ERRNO_CODES[e.code]);
            }
          },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(ERRNO_CODES[e.code]);
            }
          },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(ERRNO_CODES[e.code]);
            }
          },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(ERRNO_CODES[e.code]);
            }
          },llseek:function (stream, offset, whence) {
            var position = offset;
            if (whence === 1) {  // SEEK_CUR.
              position += stream.position;
            } else if (whence === 2) {  // SEEK_END.
              if (FS.isFile(stream.node.mode)) {
                try {
                  var stat = fs.fstatSync(stream.nfd);
                  position += stat.size;
                } catch (e) {
                  throw new FS.ErrnoError(ERRNO_CODES[e.code]);
                }
              }
            }
    
            if (position < 0) {
              throw new FS.ErrnoError(ERRNO_CODES.EINVAL);
            }
    
            return position;
          }}};
    
    var WORKERFS={DIR_MODE:16895,FILE_MODE:33279,reader:null,mount:function (mount) {
          assert(ENVIRONMENT_IS_WORKER);
          if (!WORKERFS.reader) WORKERFS.reader = new FileReaderSync();
          var root = WORKERFS.createNode(null, '/', WORKERFS.DIR_MODE, 0);
          var createdParents = {};
          function ensureParent(path) {
            // return the parent node, creating subdirs as necessary
            var parts = path.split('/');
            var parent = root;
            for (var i = 0; i < parts.length-1; i++) {
              var curr = parts.slice(0, i+1).join('/');
              // Issue 4254: Using curr as a node name will prevent the node
              // from being found in FS.nameTable when FS.open is called on
              // a path which holds a child of this node,
              // given that all FS functions assume node names
              // are just their corresponding parts within their given path,
              // rather than incremental aggregates which include their parent's
              // directories.
              if (!createdParents[curr]) {
                createdParents[curr] = WORKERFS.createNode(parent, parts[i], WORKERFS.DIR_MODE, 0);
              }
              parent = createdParents[curr];
            }
            return parent;
          }
          function base(path) {
            var parts = path.split('/');
            return parts[parts.length-1];
          }
          // We also accept FileList here, by using Array.prototype
          Array.prototype.forEach.call(mount.opts["files"] || [], function(file) {
            WORKERFS.createNode(ensureParent(file.name), base(file.name), WORKERFS.FILE_MODE, 0, file, file.lastModifiedDate);
          });
          (mount.opts["blobs"] || []).forEach(function(obj) {
            WORKERFS.createNode(ensureParent(obj["name"]), base(obj["name"]), WORKERFS.FILE_MODE, 0, obj["data"]);
          });
          (mount.opts["packages"] || []).forEach(function(pack) {
            pack['metadata'].files.forEach(function(file) {
              var name = file.filename.substr(1); // remove initial slash
              WORKERFS.createNode(ensureParent(name), base(name), WORKERFS.FILE_MODE, 0, pack['blob'].slice(file.start, file.end));
            });
          });
          return root;
        },createNode:function (parent, name, mode, dev, contents, mtime) {
          var node = FS.createNode(parent, name, mode);
          node.mode = mode;
          node.node_ops = WORKERFS.node_ops;
          node.stream_ops = WORKERFS.stream_ops;
          node.timestamp = (mtime || new Date).getTime();
          assert(WORKERFS.FILE_MODE !== WORKERFS.DIR_MODE);
          if (mode === WORKERFS.FILE_MODE) {
            node.size = contents.size;
            node.contents = contents;
          } else {
            node.size = 4096;
            node.contents = {};
          }
          if (parent) {
            parent.contents[name] = node;
          }
          return node;
        },node_ops:{getattr:function (node) {
            return {
              dev: 1,
              ino: undefined,
              mode: node.mode,
              nlink: 1,
              uid: 0,
              gid: 0,
              rdev: undefined,
              size: node.size,
              atime: new Date(node.timestamp),
              mtime: new Date(node.timestamp),
              ctime: new Date(node.timestamp),
              blksize: 4096,
              blocks: Math.ceil(node.size / 4096),
            };
          },setattr:function (node, attr) {
            if (attr.mode !== undefined) {
              node.mode = attr.mode;
            }
            if (attr.timestamp !== undefined) {
              node.timestamp = attr.timestamp;
            }
          },lookup:function (parent, name) {
            throw new FS.ErrnoError(ERRNO_CODES.ENOENT);
          },mknod:function (parent, name, mode, dev) {
            throw new FS.ErrnoError(ERRNO_CODES.EPERM);
          },rename:function (oldNode, newDir, newName) {
            throw new FS.ErrnoError(ERRNO_CODES.EPERM);
          },unlink:function (parent, name) {
            throw new FS.ErrnoError(ERRNO_CODES.EPERM);
          },rmdir:function (parent, name) {
            throw new FS.ErrnoError(ERRNO_CODES.EPERM);
          },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) {
            throw new FS.ErrnoError(ERRNO_CODES.EPERM);
          },readlink:function (node) {
            throw new FS.ErrnoError(ERRNO_CODES.EPERM);
          }},stream_ops:{read:function (stream, buffer, offset, length, position) {
            if (position >= stream.node.size) return 0;
            var chunk = stream.node.contents.slice(position, position + length);
            var ab = WORKERFS.reader.readAsArrayBuffer(chunk);
            buffer.set(new Uint8Array(ab), offset);
            return chunk.size;
          },write:function (stream, buffer, offset, length, position) {
            throw new FS.ErrnoError(ERRNO_CODES.EIO);
          },llseek:function (stream, offset, whence) {
            var position = offset;
            if (whence === 1) {  // SEEK_CUR.
              position += stream.position;
            } else if (whence === 2) {  // SEEK_END.
              if (FS.isFile(stream.node.mode)) {
                position += stream.node.size;
              }
            }
            if (position < 0) {
              throw new FS.ErrnoError(ERRNO_CODES.EINVAL);
            }
            return position;
          }}};
    
    var _stdin=STATICTOP; STATICTOP += 16;;
    
    var _stdout=STATICTOP; STATICTOP += 16;;
    
    var _stderr=STATICTOP; STATICTOP += 16;;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,handleFSError:function (e) {
          if (!(e instanceof FS.ErrnoError)) throw e + ' : ' + stackTrace();
          return ___setErrNo(e.errno);
        },lookupPath:function (path, opts) {
          path = PATH.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(ERRNO_CODES.ELOOP);
          }
    
          // 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.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(ERRNO_CODES.ELOOP);
                }
              }
            }
          }
    
          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 err = FS.mayLookup(parent);
          if (err) {
            throw new FS.ErrnoError(err, 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) {
          if (!FS.FSNode) {
            FS.FSNode = 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;
            };
    
            FS.FSNode.prototype = {};
    
            // compatibility
            var readMode = 292 | 73;
            var writeMode = 146;
    
            // NOTE we must use Object.defineProperties instead of individual calls to
            // Object.defineProperty in order to make closure compiler happy
            Object.defineProperties(FS.FSNode.prototype, {
              read: {
                get: function() { return (this.mode & readMode) === readMode; },
                set: function(val) { val ? this.mode |= readMode : this.mode &= ~readMode; }
              },
              write: {
                get: function() { return (this.mode & writeMode) === writeMode; },
                set: function(val) { val ? this.mode |= writeMode : this.mode &= ~writeMode; }
              },
              isFolder: {
                get: function() { return FS.isDir(this.mode); }
              },
              isDevice: {
                get: function() { return FS.isChrdev(this.mode); }
              }
            });
          }
    
          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,"rs":1052672,"r+":2,"w":577,"wx":705,"xw":705,"w+":578,"wx+":706,"xw+":706,"a":1089,"ax":1217,"xa":1217,"a+":1090,"ax+":1218,"xa+":1218},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 ERRNO_CODES.EACCES;
          } else if (perms.indexOf('w') !== -1 && !(node.mode & 146)) {
            return ERRNO_CODES.EACCES;
          } else if (perms.indexOf('x') !== -1 && !(node.mode & 73)) {
            return ERRNO_CODES.EACCES;
          }
          return 0;
        },mayLookup:function (dir) {
          var err = FS.nodePermissions(dir, 'x');
          if (err) return err;
          if (!dir.node_ops.lookup) return ERRNO_CODES.EACCES;
          return 0;
        },mayCreate:function (dir, name) {
          try {
            var node = FS.lookupNode(dir, name);
            return ERRNO_CODES.EEXIST;
          } 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 err = FS.nodePermissions(dir, 'wx');
          if (err) {
            return err;
          }
          if (isdir) {
            if (!FS.isDir(node.mode)) {
              return ERRNO_CODES.ENOTDIR;
            }
            if (FS.isRoot(node) || FS.getPath(node) === FS.cwd()) {
              return ERRNO_CODES.EBUSY;
            }
          } else {
            if (FS.isDir(node.mode)) {
              return ERRNO_CODES.EISDIR;
            }
          }
          return 0;
        },mayOpen:function (node, flags) {
          if (!node) {
            return ERRNO_CODES.ENOENT;
          }
          if (FS.isLink(node.mode)) {
            return ERRNO_CODES.ELOOP;
          } 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 ERRNO_CODES.EISDIR;
            }
          }
          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(ERRNO_CODES.EMFILE);
        },getStream:function (fd) {
          return FS.streams[fd];
        },createStream:function (stream, fd_start, fd_end) {
          if (!FS.FSStream) {
            FS.FSStream = function(){};
            FS.FSStream.prototype = {};
            // compatibility
            Object.defineProperties(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(ERRNO_CODES.ESPIPE);
          }},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) {
            console.log('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(err) {
            assert(FS.syncFSRequests > 0);
            FS.syncFSRequests--;
            return callback(err);
          }
    
          function done(err) {
            if (err) {
              if (!done.errored) {
                done.errored = true;
                return doCallback(err);
              }
              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) {
          var root = mountpoint === '/';
          var pseudo = !mountpoint;
          var node;
    
          if (root && FS.root) {
            throw new FS.ErrnoError(ERRNO_CODES.EBUSY);
          } 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(ERRNO_CODES.EBUSY);
            }
    
            if (!FS.isDir(node.mode)) {
              throw new FS.ErrnoError(ERRNO_CODES.ENOTDIR);
            }
          }
    
          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(ERRNO_CODES.EINVAL);
          }
    
          // 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(ERRNO_CODES.EINVAL);
          }
          var err = FS.mayCreate(parent, name);
          if (err) {
            throw new FS.ErrnoError(err);
          }
          if (!parent.node_ops.mknod) {
            throw new FS.ErrnoError(ERRNO_CODES.EPERM);
          }
          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 != ERRNO_CODES.EEXIST) 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.resolve(oldpath)) {
            throw new FS.ErrnoError(ERRNO_CODES.ENOENT);
          }
          var lookup = FS.lookupPath(newpath, { parent: true });
          var parent = lookup.node;
          if (!parent) {
            throw new FS.ErrnoError(ERRNO_CODES.ENOENT);
          }
          var newname = PATH.basename(newpath);
          var err = FS.mayCreate(parent, newname);
          if (err) {
            throw new FS.ErrnoError(err);
          }
          if (!parent.node_ops.symlink) {
            throw new FS.ErrnoError(ERRNO_CODES.EPERM);
          }
          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;
          try {
            lookup = FS.lookupPath(old_path, { parent: true });
            old_dir = lookup.node;
            lookup = FS.lookupPath(new_path, { parent: true });
            new_dir = lookup.node;
          } catch (e) {
            throw new FS.ErrnoError(ERRNO_CODES.EBUSY);
          }
          if (!old_dir || !new_dir) throw new FS.ErrnoError(ERRNO_CODES.ENOENT);
          // need to be part of the same mount
          if (old_dir.mount !== new_dir.mount) {
            throw new FS.ErrnoError(ERRNO_CODES.EXDEV);
          }
          // 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.relative(old_path, new_dirname);
          if (relative.charAt(0) !== '.') {
            throw new FS.ErrnoError(ERRNO_CODES.EINVAL);
          }
          // new path should not be an ancestor of the old path
          relative = PATH.relative(new_path, old_dirname);
          if (relative.charAt(0) !== '.') {
            throw new FS.ErrnoError(ERRNO_CODES.ENOTEMPTY);
          }
          // 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 err = FS.mayDelete(old_dir, old_name, isdir);
          if (err) {
            throw new FS.ErrnoError(err);
          }
          // need delete permissions if we'll be overwriting.
          // need create permissions if new doesn't already exist.
          err = new_node ?
            FS.mayDelete(new_dir, new_name, isdir) :
            FS.mayCreate(new_dir, new_name);
          if (err) {
            throw new FS.ErrnoError(err);
          }
          if (!old_dir.node_ops.rename) {
            throw new FS.ErrnoError(ERRNO_CODES.EPERM);
          }
          if (FS.isMountpoint(old_node) || (new_node && FS.isMountpoint(new_node))) {
            throw new FS.ErrnoError(ERRNO_CODES.EBUSY);
          }
          // if we are going to change the parent, check write permissions
          if (new_dir !== old_dir) {
            err = FS.nodePermissions(old_dir, 'w');
            if (err) {
              throw new FS.ErrnoError(err);
            }
          }
          try {
            if (FS.trackingDelegate['willMovePath']) {
              FS.trackingDelegate['willMovePath'](old_path, new_path);
            }
          } catch(e) {
            console.log("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) {
            console.log("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 err = FS.mayDelete(parent, name, true);
          if (err) {
            throw new FS.ErrnoError(err);
          }
          if (!parent.node_ops.rmdir) {
            throw new FS.ErrnoError(ERRNO_CODES.EPERM);
          }
          if (FS.isMountpoint(node)) {
            throw new FS.ErrnoError(ERRNO_CODES.EBUSY);
          }
          try {
            if (FS.trackingDelegate['willDeletePath']) {
              FS.trackingDelegate['willDeletePath'](path);
            }
          } catch(e) {
            console.log("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) {
            console.log("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(ERRNO_CODES.ENOTDIR);
          }
          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 err = FS.mayDelete(parent, name, false);
          if (err) {
            // 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(err);
          }
          if (!parent.node_ops.unlink) {
            throw new FS.ErrnoError(ERRNO_CODES.EPERM);
          }
          if (FS.isMountpoint(node)) {
            throw new FS.ErrnoError(ERRNO_CODES.EBUSY);
          }
          try {
            if (FS.trackingDelegate['willDeletePath']) {
              FS.trackingDelegate['willDeletePath'](path);
            }
          } catch(e) {
            console.log("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) {
            console.log("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(ERRNO_CODES.ENOENT);
          }
          if (!link.node_ops.readlink) {
            throw new FS.ErrnoError(ERRNO_CODES.EINVAL);
          }
          return PATH.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(ERRNO_CODES.ENOENT);
          }
          if (!node.node_ops.getattr) {
            throw new FS.ErrnoError(ERRNO_CODES.EPERM);
          }
          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(ERRNO_CODES.EPERM);
          }
          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(ERRNO_CODES.EBADF);
          }
          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(ERRNO_CODES.EPERM);
          }
          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(ERRNO_CODES.EBADF);
          }
          FS.chown(stream.node, uid, gid);
        },truncate:function (path, len) {
          if (len < 0) {
            throw new FS.ErrnoError(ERRNO_CODES.EINVAL);
          }
          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(ERRNO_CODES.EPERM);
          }
          if (FS.isDir(node.mode)) {
            throw new FS.ErrnoError(ERRNO_CODES.EISDIR);
          }
          if (!FS.isFile(node.mode)) {
            throw new FS.ErrnoError(ERRNO_CODES.EINVAL);
          }
          var err = FS.nodePermissions(node, 'w');
          if (err) {
            throw new FS.ErrnoError(err);
          }
          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(ERRNO_CODES.EBADF);
          }
          if ((stream.flags & 2097155) === 0) {
            throw new FS.ErrnoError(ERRNO_CODES.EINVAL);
          }
          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(ERRNO_CODES.ENOENT);
          }
          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(ERRNO_CODES.EEXIST);
              }
            } else {
              // node doesn't exist, try to create it
              node = FS.mknod(path, mode, 0);
              created = true;
            }
          }
          if (!node) {
            throw new FS.ErrnoError(ERRNO_CODES.ENOENT);
          }
          // 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(ERRNO_CODES.ENOTDIR);
          }
          // 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 err = FS.mayOpen(node, flags);
            if (err) {
              throw new FS.ErrnoError(err);
            }
          }
          // 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);
    
          // 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('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) {
            console.log("FS.trackingDelegate['onOpenFile']('"+path+"', flags) threw an exception: " + e.message);
          }
          return stream;
        },close:function (stream) {
          if (FS.isClosed(stream)) {
            throw new FS.ErrnoError(ERRNO_CODES.EBADF);
          }
          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(ERRNO_CODES.EBADF);
          }
          if (!stream.seekable || !stream.stream_ops.llseek) {
            throw new FS.ErrnoError(ERRNO_CODES.ESPIPE);
          }
          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(ERRNO_CODES.EINVAL);
          }
          if (FS.isClosed(stream)) {
            throw new FS.ErrnoError(ERRNO_CODES.EBADF);
          }
          if ((stream.flags & 2097155) === 1) {
            throw new FS.ErrnoError(ERRNO_CODES.EBADF);
          }
          if (FS.isDir(stream.node.mode)) {
            throw new FS.ErrnoError(ERRNO_CODES.EISDIR);
          }
          if (!stream.stream_ops.read) {
            throw new FS.ErrnoError(ERRNO_CODES.EINVAL);
          }
          var seeking = typeof position !== 'undefined';
          if (!seeking) {
            position = stream.position;
          } else if (!stream.seekable) {
            throw new FS.ErrnoError(ERRNO_CODES.ESPIPE);
          }
          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(ERRNO_CODES.EINVAL);
          }
          if (FS.isClosed(stream)) {
            throw new FS.ErrnoError(ERRNO_CODES.EBADF);
          }
          if ((stream.flags & 2097155) === 0) {
            throw new FS.ErrnoError(ERRNO_CODES.EBADF);
          }
          if (FS.isDir(stream.node.mode)) {
            throw new FS.ErrnoError(ERRNO_CODES.EISDIR);
          }
          if (!stream.stream_ops.write) {
            throw new FS.ErrnoError(ERRNO_CODES.EINVAL);
          }
          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) {
            position = stream.position;
          } else if (!stream.seekable) {
            throw new FS.ErrnoError(ERRNO_CODES.ESPIPE);
          }
          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) {
            console.log("FS.trackingDelegate['onWriteToFile']('"+path+"') threw an exception: " + e.message);
          }
          return bytesWritten;
        },allocate:function (stream, offset, length) {
          if (FS.isClosed(stream)) {
            throw new FS.ErrnoError(ERRNO_CODES.EBADF);
          }
          if (offset < 0 || length <= 0) {
            throw new FS.ErrnoError(ERRNO_CODES.EINVAL);
          }
          if ((stream.flags & 2097155) === 0) {
            throw new FS.ErrnoError(ERRNO_CODES.EBADF);
          }
          if (!FS.isFile(stream.node.mode) && !FS.isDir(stream.node.mode)) {
            throw new FS.ErrnoError(ERRNO_CODES.ENODEV);
          }
          if (!stream.stream_ops.allocate) {
            throw new FS.ErrnoError(ERRNO_CODES.EOPNOTSUPP);
          }
          stream.stream_ops.allocate(stream, offset, length);
        },mmap:function (stream, buffer, offset, length, position, prot, flags) {
          // TODO if PROT is PROT_WRITE, make sure we have write access
          if ((stream.flags & 2097155) === 1) {
            throw new FS.ErrnoError(ERRNO_CODES.EACCES);
          }
          if (!stream.stream_ops.mmap) {
            throw new FS.ErrnoError(ERRNO_CODES.ENODEV);
          }
          return stream.stream_ops.mmap(stream, buffer, offset, 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(ERRNO_CODES.ENOTTY);
          }
          return stream.stream_ops.ioctl(stream, cmd, arg);
        },readFile:function (path, opts) {
          opts = opts || {};
          opts.flags = opts.flags || 'r';
          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 || 'w';
          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(ERRNO_CODES.ENOENT);
          }
          if (!FS.isDir(lookup.node.mode)) {
            throw new FS.ErrnoError(ERRNO_CODES.ENOTDIR);
          }
          var err = FS.nodePermissions(lookup.node, 'x');
          if (err) {
            throw new FS.ErrnoError(err);
          }
          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 Module['printErr']
          // 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;
          if (typeof crypto !== 'undefined') {
            // for modern web browsers
            var randomBuffer = new Uint8Array(1);
            random_device = function() { crypto.getRandomValues(randomBuffer); return randomBuffer[0]; };
          } else if (ENVIRONMENT_IS_NODE) {
            // for nodejs
            random_device = function() { return require('crypto')['randomBytes'](1)[0]; };
          } else {
            // default for ES5 platforms
            random_device = function() { abort("random_device"); /*Math.random() is not safe for random number generation, so this fallback random_device implementation aborts... see kripken/emscripten/pull/7096 */ };
          }
          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(ERRNO_CODES.EBADF);
                  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', 'r');
          assert(stdin.fd === 0, 'invalid handle for stdin (' + stdin.fd + ')');
    
          var stdout = FS.open('/dev/stdout', 'w');
          assert(stdout.fd === 1, 'invalid handle for stdout (' + stdout.fd + ')');
    
          var stderr = FS.open('/dev/stderr', 'w');
          assert(stderr.fd === 2, 'invalid handle for stderr (' + stderr.fd + ')');
        },ensureErrnoError:function () {
          if (FS.ErrnoError) return;
          FS.ErrnoError = function ErrnoError(errno, node) {
            //err(stackTrace()); // useful for debugging
            this.node = node;
            this.setErrno = 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];
            // Node.js compatibility: assigning on this.stack fails on Node 4 (but fixed on Node 8)
            if (this.stack) Object.defineProperty(this, "stack", { value: (new Error).stack, writable: true });
            if (this.stack) 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)
          [ERRNO_CODES.ENOENT].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,
            'IDBFS': IDBFS,
            'NODEFS': NODEFS,
            'WORKERFS': WORKERFS,
          };
        },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;
        },joinPath:function (parts, forceRelative) {
          var path = PATH.join.apply(null, parts);
          if (forceRelative && path[0] == '/') path = path.substr(1);
          return path;
        },absolutePath:function (relative, base) {
          return PATH.resolve(base, relative);
        },standardizePath:function (path) {
          return PATH.normalize(path);
        },findObject:function (path, dontResolveLastLink) {
          var ret = FS.analyzePath(path, dontResolveLastLink);
          if (ret.exists) {
            return ret.object;
          } else {
            ___setErrNo(ret.error);
            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;
        },createFolder:function (parent, name, canRead, canWrite) {
          var path = PATH.join2(typeof parent === 'string' ? parent : FS.getPath(parent), name);
          var mode = FS.getMode(canRead, canWrite);
          return FS.mkdir(path, mode);
        },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, 'w');
            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(ERRNO_CODES.EIO);
                }
                if (result === undefined && bytesRead === 0) {
                  throw new FS.ErrnoError(ERRNO_CODES.EAGAIN);
                }
                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(ERRNO_CODES.EIO);
                }
              }
              if (length) {
                stream.node.timestamp = Date.now();
              }
              return i;
            }
          });
          return FS.mkdev(path, mode, dev);
        },createLink:function (parent, name, target, canRead, canWrite) {
          var path = PATH.join2(typeof parent === 'string' ? parent : FS.getPath(parent), name);
          return FS.symlink(target, path);
        },forceLoadFile:function (obj) {
          if (obj.isDevice || obj.isFolder || obj.link || obj.contents) return true;
          var success = 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 (Module['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(Module['read'](obj.url), true);
              obj.usedBytes = obj.contents.length;
            } catch (e) {
              success = false;
            }
          } else {
            throw new Error('Cannot load without read() or XMLHttpRequest.');
          }
          if (!success) ___setErrNo(ERRNO_CODES.EIO);
          return success;
        },createLazyFile:function (parent, name, url, canRead, canWrite) {
          // Lazy chunked Uint8Array (implements get and length from Uint8Array). Actual getting is abstracted away for eventual reuse.
          function LazyUint8Array() {
            this.lengthKnown = false;
            this.chunks = []; // Loaded chunks. Index is the chunk number
          }
          LazyUint8Array.prototype.get = 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(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;
              console.log("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: function() {
                  if(!this.lengthKnown) {
                    this.cacheLength();
                  }
                  return this._length;
                }
              },
              chunkSize: {
                get: 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: 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() {
              if (!FS.forceLoadFile(node)) {
                throw new FS.ErrnoError(ERRNO_CODES.EIO);
              }
              return fn.apply(null, arguments);
            };
          });
          // use a custom read function
          stream_ops.read = function stream_ops_read(stream, buffer, offset, length, position) {
            if (!FS.forceLoadFile(node)) {
              throw new FS.ErrnoError(ERRNO_CODES.EIO);
            }
            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.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() {
            console.log('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;
        }};var SYSCALLS={DEFAULT_POLLMASK:5,mappings:{},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(ERRNO_CODES.EBADF);
              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 -ERRNO_CODES.ENOTDIR;
            }
            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;
          HEAP32[(((buf)+(36))>>2)]=stat.size;
          HEAP32[(((buf)+(40))>>2)]=4096;
          HEAP32[(((buf)+(44))>>2)]=stat.blocks;
          HEAP32[(((buf)+(48))>>2)]=(stat.atime.getTime() / 1000)|0;
          HEAP32[(((buf)+(52))>>2)]=0;
          HEAP32[(((buf)+(56))>>2)]=(stat.mtime.getTime() / 1000)|0;
          HEAP32[(((buf)+(60))>>2)]=0;
          HEAP32[(((buf)+(64))>>2)]=(stat.ctime.getTime() / 1000)|0;
          HEAP32[(((buf)+(68))>>2)]=0;
          HEAP32[(((buf)+(72))>>2)]=stat.ino;
          return 0;
        },doMsync:function (addr, stream, len, flags) {
          var buffer = new Uint8Array(HEAPU8.subarray(addr, addr + len));
          FS.msync(stream, buffer, 0, 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 -ERRNO_CODES.EINVAL;
          }
          FS.mknod(path, mode, dev);
          return 0;
        },doReadlink:function (path, buf, bufsize) {
          if (bufsize <= 0) return -ERRNO_CODES.EINVAL;
          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 -ERRNO_CODES.EINVAL;
          }
          var node;
          var lookup = FS.lookupPath(path, { follow: true });
          node = lookup.node;
          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 -ERRNO_CODES.EACCES;
          }
          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:0,get:function (varargs) {
          SYSCALLS.varargs += 4;
          var ret = HEAP32[(((SYSCALLS.varargs)-(4))>>2)];
          return ret;
        },getStr:function () {
          var ret = Pointer_stringify(SYSCALLS.get());
          return ret;
        },getStreamFromFD:function () {
          var stream = FS.getStream(SYSCALLS.get());
          if (!stream) throw new FS.ErrnoError(ERRNO_CODES.EBADF);
          return stream;
        },getSocketFromFD:function () {
          var socket = SOCKFS.getSocket(SYSCALLS.get());
          if (!socket) throw new FS.ErrnoError(ERRNO_CODES.EBADF);
          return socket;
        },getSocketAddress:function (allowNull) {
          var addrp = SYSCALLS.get(), addrlen = SYSCALLS.get();
          if (allowNull && addrp === 0) return null;
          var info = __read_sockaddr(addrp, addrlen);
          if (info.errno) throw new FS.ErrnoError(info.errno);
          info.addr = DNS.lookup_addr(info.addr) || info.addr;
          return info;
        },get64:function () {
          var low = SYSCALLS.get(), high = SYSCALLS.get();
          if (low >= 0) assert(high === 0);
          else assert(high === -1);
          return low;
        },getZero:function () {
          assert(SYSCALLS.get() === 0);
        }};function ___syscall140(which, varargs) {SYSCALLS.varargs = varargs;
    try {
     // llseek
        var stream = SYSCALLS.getStreamFromFD(), offset_high = SYSCALLS.get(), offset_low = SYSCALLS.get(), result = SYSCALLS.get(), whence = SYSCALLS.get();
        // NOTE: offset_high is unused - Emscripten's off_t is 32-bit
        var offset = offset_low;
        FS.llseek(stream, offset, whence);
        HEAP32[((result)>>2)]=stream.position;
        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 ___syscall145(which, varargs) {SYSCALLS.varargs = varargs;
    try {
     // readv
        var stream = SYSCALLS.getStreamFromFD(), iov = SYSCALLS.get(), iovcnt = SYSCALLS.get();
        return SYSCALLS.doReadv(stream, iov, iovcnt);
      } catch (e) {
      if (typeof FS === 'undefined' || !(e instanceof FS.ErrnoError)) abort(e);
      return -e.errno;
    }
    }
  
    function ___syscall146(which, varargs) {SYSCALLS.varargs = varargs;
    try {
     // writev
        var stream = SYSCALLS.getStreamFromFD(), iov = SYSCALLS.get(), iovcnt = SYSCALLS.get();
        return SYSCALLS.doWritev(stream, iov, iovcnt);
      } catch (e) {
      if (typeof FS === 'undefined' || !(e instanceof FS.ErrnoError)) abort(e);
      return -e.errno;
    }
    }
  
    function ___syscall221(which, varargs) {SYSCALLS.varargs = varargs;
    try {
     // fcntl64
        var stream = SYSCALLS.getStreamFromFD(), cmd = SYSCALLS.get();
        switch (cmd) {
          case 0: {
            var arg = SYSCALLS.get();
            if (arg < 0) {
              return -ERRNO_CODES.EINVAL;
            }
            var newStream;
            newStream = FS.open(stream.path, stream.flags, 0, arg);
            return newStream.fd;
          }
          case 1:
          case 2:
            return 0;  // FD_CLOEXEC makes no sense for a single process.
          case 3:
            return stream.flags;
          case 4: {
            var arg = SYSCALLS.get();
            stream.flags |= arg;
            return 0;
          }
          case 12:
          case 12: {
            var arg = SYSCALLS.get();
            var offset = 0;
            // We're always unlocked.
            HEAP16[(((arg)+(offset))>>1)]=2;
            return 0;
          }
          case 13:
          case 14:
          case 13:
          case 14:
            return 0; // Pretend that the locking is successful.
          case 16:
          case 8:
            return -ERRNO_CODES.EINVAL; // These are for sockets. We don't have them fully implemented yet.
          case 9:
            // musl trusts getown return values, due to a bug where they must be, as they overlap with errors. just return -1 here, so fnctl() returns that, and we set errno ourselves.
            ___setErrNo(ERRNO_CODES.EINVAL);
            return -1;
          default: {
            return -ERRNO_CODES.EINVAL;
          }
        }
      } catch (e) {
      if (typeof FS === 'undefined' || !(e instanceof FS.ErrnoError)) abort(e);
      return -e.errno;
    }
    }
  
    function ___syscall5(which, varargs) {SYSCALLS.varargs = varargs;
    try {
     // open
        var pathname = SYSCALLS.getStr(), flags = SYSCALLS.get(), mode = SYSCALLS.get() // optional TODO
        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 ___syscall54(which, varargs) {SYSCALLS.varargs = varargs;
    try {
     // ioctl
        var stream = SYSCALLS.getStreamFromFD(), op = SYSCALLS.get();
        switch (op) {
          case 21509:
          case 21505: {
            if (!stream.tty) return -ERRNO_CODES.ENOTTY;
            return 0;
          }
          case 21510:
          case 21511:
          case 21512:
          case 21506:
          case 21507:
          case 21508: {
            if (!stream.tty) return -ERRNO_CODES.ENOTTY;
            return 0; // no-op, not actually adjusting terminal settings
          }
          case 21519: {
            if (!stream.tty) return -ERRNO_CODES.ENOTTY;
            var argp = SYSCALLS.get();
            HEAP32[((argp)>>2)]=0;
            return 0;
          }
          case 21520: {
            if (!stream.tty) return -ERRNO_CODES.ENOTTY;
            return -ERRNO_CODES.EINVAL; // not supported
          }
          case 21531: {
            var argp = SYSCALLS.get();
            return FS.ioctl(stream, op, argp);
          }
          case 21523: {
            // TODO: in theory we should write to the winsize struct that gets
            // passed in, but for now musl doesn't read anything on it
            if (!stream.tty) return -ERRNO_CODES.ENOTTY;
            return 0;
          }
          case 21524: {
            // TODO: technically, this ioctl call should change the window size.
            // but, since emscripten doesn't have any concept of a terminal window
            // yet, we'll just silently throw it away as we do TIOCGWINSZ
            if (!stream.tty) return -ERRNO_CODES.ENOTTY;
            return 0;
          }
          default: abort('bad ioctl syscall ' + op);
        }
      } catch (e) {
      if (typeof FS === 'undefined' || !(e instanceof FS.ErrnoError)) abort(e);
      return -e.errno;
    }
    }
  
    function ___syscall6(which, varargs) {SYSCALLS.varargs = varargs;
    try {
     // close
        var stream = SYSCALLS.getStreamFromFD();
        FS.close(stream);
        return 0;
      } catch (e) {
      if (typeof FS === 'undefined' || !(e instanceof FS.ErrnoError)) abort(e);
      return -e.errno;
    }
    }
  
    function ___syscall91(which, varargs) {SYSCALLS.varargs = varargs;
    try {
     // munmap
        var addr = SYSCALLS.get(), len = SYSCALLS.get();
        // 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);
          SYSCALLS.doMsync(addr, stream, len, info.flags)
          FS.munmap(stream);
          SYSCALLS.mappings[addr] = null;
          if (info.allocated) {
            _free(info.malloc);
          }
        }
        return 0;
      } catch (e) {
      if (typeof FS === 'undefined' || !(e instanceof FS.ErrnoError)) abort(e);
      return -e.errno;
    }
    }
  
    function ___unlock() {}
  
    function _abort() {
        Module['abort']();
      }
  
    
    var ENV={};function _getenv(name) {
        // char *getenv(const char *name);
        // http://pubs.opengroup.org/onlinepubs/009695399/functions/getenv.html
        if (name === 0) return 0;
        name = Pointer_stringify(name);
        if (!ENV.hasOwnProperty(name)) return 0;
    
        if (_getenv.ret) _free(_getenv.ret);
        _getenv.ret = allocateUTF8(ENV[name]);
        return _getenv.ret;
      }
  
     
  
    function _llvm_stackrestore(p) {
        var self = _llvm_stacksave;
        var ret = self.LLVM_SAVEDSTACKS[p];
        self.LLVM_SAVEDSTACKS.splice(p, 1);
        stackRestore(ret);
      }
  
    function _llvm_stacksave() {
        var self = _llvm_stacksave;
        if (!self.LLVM_SAVEDSTACKS) {
          self.LLVM_SAVEDSTACKS = [];
        }
        self.LLVM_SAVEDSTACKS.push(stackSave());
        return self.LLVM_SAVEDSTACKS.length-1;
      }
  
    
    function _emscripten_memcpy_big(dest, src, num) {
        HEAPU8.set(HEAPU8.subarray(src, src+num), dest);
        return dest;
      } 
  
     
  
     
  
     
  
    function _pthread_cond_wait() { return 0; }
  
    
    var PTHREAD_SPECIFIC={};function _pthread_getspecific(key) {
        return PTHREAD_SPECIFIC[key] || 0;
      }
  
    
    var PTHREAD_SPECIFIC_NEXT_KEY=1;function _pthread_key_create(key, destructor) {
        if (key == 0) {
          return ERRNO_CODES.EINVAL;
        }
        HEAP32[((key)>>2)]=PTHREAD_SPECIFIC_NEXT_KEY;
        // values start at 0
        PTHREAD_SPECIFIC[PTHREAD_SPECIFIC_NEXT_KEY] = 0;
        PTHREAD_SPECIFIC_NEXT_KEY++;
        return 0;
      }
  
     
  
     
  
    function _pthread_once(ptr, func) {
        if (!_pthread_once.seen) _pthread_once.seen = {};
        if (ptr in _pthread_once.seen) return;
        Module['dynCall_v'](func);
        _pthread_once.seen[ptr] = 1;
      }
  
    function _pthread_setspecific(key, value) {
        if (!(key in PTHREAD_SPECIFIC)) {
          return ERRNO_CODES.EINVAL;
        }
        PTHREAD_SPECIFIC[key] = value;
        return 0;
      }
  
     
  
    
    
    function __isLeapYear(year) {
          return year%4 === 0 && (year%100 !== 0 || year%400 === 0);
      }
    
    function __arraySum(array, index) {
        var sum = 0;
        for (var i = 0; i <= index; sum += array[i++]);
        return sum;
      }
    
    
    var __MONTH_DAYS_LEAP=[31,29,31,30,31,30,31,31,30,31,30,31];
    
    var __MONTH_DAYS_REGULAR=[31,28,31,30,31,30,31,31,30,31,30,31];function __addDays(date, days) {
        var newDate = new Date(date.getTime());
        while(days > 0) {
          var leap = __isLeapYear(newDate.getFullYear());
          var currentMonth = newDate.getMonth();
          var daysInCurrentMonth = (leap ? __MONTH_DAYS_LEAP : __MONTH_DAYS_REGULAR)[currentMonth];
    
          if (days > daysInCurrentMonth-newDate.getDate()) {
            // we spill over to next month
            days -= (daysInCurrentMonth-newDate.getDate()+1);
            newDate.setDate(1);
            if (currentMonth < 11) {
              newDate.setMonth(currentMonth+1)
            } else {
              newDate.setMonth(0);
              newDate.setFullYear(newDate.getFullYear()+1);
            }
          } else {
            // we stay in current month
            newDate.setDate(newDate.getDate()+days);
            return newDate;
          }
        }
    
        return newDate;
      }function _strftime(s, maxsize, format, tm) {
        // size_t strftime(char *restrict s, size_t maxsize, const char *restrict format, const struct tm *restrict timeptr);
        // http://pubs.opengroup.org/onlinepubs/009695399/functions/strftime.html
    
        var tm_zone = HEAP32[(((tm)+(40))>>2)];
    
        var date = {
          tm_sec: HEAP32[((tm)>>2)],
          tm_min: HEAP32[(((tm)+(4))>>2)],
          tm_hour: HEAP32[(((tm)+(8))>>2)],
          tm_mday: HEAP32[(((tm)+(12))>>2)],
          tm_mon: HEAP32[(((tm)+(16))>>2)],
          tm_year: HEAP32[(((tm)+(20))>>2)],
          tm_wday: HEAP32[(((tm)+(24))>>2)],
          tm_yday: HEAP32[(((tm)+(28))>>2)],
          tm_isdst: HEAP32[(((tm)+(32))>>2)],
          tm_gmtoff: HEAP32[(((tm)+(36))>>2)],
          tm_zone: tm_zone ? Pointer_stringify(tm_zone) : ''
        };
    
        var pattern = Pointer_stringify(format);
    
        // expand format
        var EXPANSION_RULES_1 = {
          '%c': '%a %b %d %H:%M:%S %Y',     // Replaced by the locale's appropriate date and time representation - e.g., Mon Aug  3 14:02:01 2013
          '%D': '%m/%d/%y',                 // Equivalent to %m / %d / %y
          '%F': '%Y-%m-%d',                 // Equivalent to %Y - %m - %d
          '%h': '%b',                       // Equivalent to %b
          '%r': '%I:%M:%S %p',              // Replaced by the time in a.m. and p.m. notation
          '%R': '%H:%M',                    // Replaced by the time in 24-hour notation
          '%T': '%H:%M:%S',                 // Replaced by the time
          '%x': '%m/%d/%y',                 // Replaced by the locale's appropriate date representation
          '%X': '%H:%M:%S'                  // Replaced by the locale's appropriate date representation
        };
        for (var rule in EXPANSION_RULES_1) {
          pattern = pattern.replace(new RegExp(rule, 'g'), EXPANSION_RULES_1[rule]);
        }
    
        var WEEKDAYS = ['Sunday', 'Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday'];
        var MONTHS = ['January', 'February', 'March', 'April', 'May', 'June', 'July', 'August', 'September', 'October', 'November', 'December'];
    
        function leadingSomething(value, digits, character) {
          var str = typeof value === 'number' ? value.toString() : (value || '');
          while (str.length < digits) {
            str = character[0]+str;
          }
          return str;
        };
    
        function leadingNulls(value, digits) {
          return leadingSomething(value, digits, '0');
        };
    
        function compareByDay(date1, date2) {
          function sgn(value) {
            return value < 0 ? -1 : (value > 0 ? 1 : 0);
          };
    
          var compare;
          if ((compare = sgn(date1.getFullYear()-date2.getFullYear())) === 0) {
            if ((compare = sgn(date1.getMonth()-date2.getMonth())) === 0) {
              compare = sgn(date1.getDate()-date2.getDate());
            }
          }
          return compare;
        };
    
        function getFirstWeekStartDate(janFourth) {
            switch (janFourth.getDay()) {
              case 0: // Sunday
                return new Date(janFourth.getFullYear()-1, 11, 29);
              case 1: // Monday
                return janFourth;
              case 2: // Tuesday
                return new Date(janFourth.getFullYear(), 0, 3);
              case 3: // Wednesday
                return new Date(janFourth.getFullYear(), 0, 2);
              case 4: // Thursday
                return new Date(janFourth.getFullYear(), 0, 1);
              case 5: // Friday
                return new Date(janFourth.getFullYear()-1, 11, 31);
              case 6: // Saturday
                return new Date(janFourth.getFullYear()-1, 11, 30);
            }
        };
    
        function getWeekBasedYear(date) {
            var thisDate = __addDays(new Date(date.tm_year+1900, 0, 1), date.tm_yday);
    
            var janFourthThisYear = new Date(thisDate.getFullYear(), 0, 4);
            var janFourthNextYear = new Date(thisDate.getFullYear()+1, 0, 4);
    
            var firstWeekStartThisYear = getFirstWeekStartDate(janFourthThisYear);
            var firstWeekStartNextYear = getFirstWeekStartDate(janFourthNextYear);
    
            if (compareByDay(firstWeekStartThisYear, thisDate) <= 0) {
              // this date is after the start of the first week of this year
              if (compareByDay(firstWeekStartNextYear, thisDate) <= 0) {
                return thisDate.getFullYear()+1;
              } else {
                return thisDate.getFullYear();
              }
            } else {
              return thisDate.getFullYear()-1;
            }
        };
    
        var EXPANSION_RULES_2 = {
          '%a': function(date) {
            return WEEKDAYS[date.tm_wday].substring(0,3);
          },
          '%A': function(date) {
            return WEEKDAYS[date.tm_wday];
          },
          '%b': function(date) {
            return MONTHS[date.tm_mon].substring(0,3);
          },
          '%B': function(date) {
            return MONTHS[date.tm_mon];
          },
          '%C': function(date) {
            var year = date.tm_year+1900;
            return leadingNulls((year/100)|0,2);
          },
          '%d': function(date) {
            return leadingNulls(date.tm_mday, 2);
          },
          '%e': function(date) {
            return leadingSomething(date.tm_mday, 2, ' ');
          },
          '%g': function(date) {
            // %g, %G, and %V give values according to the ISO 8601:2000 standard week-based year.
            // In this system, weeks begin on a Monday and week 1 of the year is the week that includes
            // January 4th, which is also the week that includes the first Thursday of the year, and
            // is also the first week that contains at least four days in the year.
            // If the first Monday of January is the 2nd, 3rd, or 4th, the preceding days are part of
            // the last week of the preceding year; thus, for Saturday 2nd January 1999,
            // %G is replaced by 1998 and %V is replaced by 53. If December 29th, 30th,
            // or 31st is a Monday, it and any following days are part of week 1 of the following year.
            // Thus, for Tuesday 30th December 1997, %G is replaced by 1998 and %V is replaced by 01.
    
            return getWeekBasedYear(date).toString().substring(2);
          },
          '%G': function(date) {
            return getWeekBasedYear(date);
          },
          '%H': function(date) {
            return leadingNulls(date.tm_hour, 2);
          },
          '%I': function(date) {
            var twelveHour = date.tm_hour;
            if (twelveHour == 0) twelveHour = 12;
            else if (twelveHour > 12) twelveHour -= 12;
            return leadingNulls(twelveHour, 2);
          },
          '%j': function(date) {
            // Day of the year (001-366)
            return leadingNulls(date.tm_mday+__arraySum(__isLeapYear(date.tm_year+1900) ? __MONTH_DAYS_LEAP : __MONTH_DAYS_REGULAR, date.tm_mon-1), 3);
          },
          '%m': function(date) {
            return leadingNulls(date.tm_mon+1, 2);
          },
          '%M': function(date) {
            return leadingNulls(date.tm_min, 2);
          },
          '%n': function() {
            return '\n';
          },
          '%p': function(date) {
            if (date.tm_hour >= 0 && date.tm_hour < 12) {
              return 'AM';
            } else {
              return 'PM';
            }
          },
          '%S': function(date) {
            return leadingNulls(date.tm_sec, 2);
          },
          '%t': function() {
            return '\t';
          },
          '%u': function(date) {
            var day = new Date(date.tm_year+1900, date.tm_mon+1, date.tm_mday, 0, 0, 0, 0);
            return day.getDay() || 7;
          },
          '%U': function(date) {
            // Replaced by the week number of the year as a decimal number [00,53].
            // The first Sunday of January is the first day of week 1;
            // days in the new year before this are in week 0. [ tm_year, tm_wday, tm_yday]
            var janFirst = new Date(date.tm_year+1900, 0, 1);
            var firstSunday = janFirst.getDay() === 0 ? janFirst : __addDays(janFirst, 7-janFirst.getDay());
            var endDate = new Date(date.tm_year+1900, date.tm_mon, date.tm_mday);
    
            // is target date after the first Sunday?
            if (compareByDay(firstSunday, endDate) < 0) {
              // calculate difference in days between first Sunday and endDate
              var februaryFirstUntilEndMonth = __arraySum(__isLeapYear(endDate.getFullYear()) ? __MONTH_DAYS_LEAP : __MONTH_DAYS_REGULAR, endDate.getMonth()-1)-31;
              var firstSundayUntilEndJanuary = 31-firstSunday.getDate();
              var days = firstSundayUntilEndJanuary+februaryFirstUntilEndMonth+endDate.getDate();
              return leadingNulls(Math.ceil(days/7), 2);
            }
    
            return compareByDay(firstSunday, janFirst) === 0 ? '01': '00';
          },
          '%V': function(date) {
            // Replaced by the week number of the year (Monday as the first day of the week)
            // as a decimal number [01,53]. If the week containing 1 January has four
            // or more days in the new year, then it is considered week 1.
            // Otherwise, it is the last week of the previous year, and the next week is week 1.
            // Both January 4th and the first Thursday of January are always in week 1. [ tm_year, tm_wday, tm_yday]
            var janFourthThisYear = new Date(date.tm_year+1900, 0, 4);
            var janFourthNextYear = new Date(date.tm_year+1901, 0, 4);
    
            var firstWeekStartThisYear = getFirstWeekStartDate(janFourthThisYear);
            var firstWeekStartNextYear = getFirstWeekStartDate(janFourthNextYear);
    
            var endDate = __addDays(new Date(date.tm_year+1900, 0, 1), date.tm_yday);
    
            if (compareByDay(endDate, firstWeekStartThisYear) < 0) {
              // if given date is before this years first week, then it belongs to the 53rd week of last year
              return '53';
            }
    
            if (compareByDay(firstWeekStartNextYear, endDate) <= 0) {
              // if given date is after next years first week, then it belongs to the 01th week of next year
              return '01';
            }
    
            // given date is in between CW 01..53 of this calendar year
            var daysDifference;
            if (firstWeekStartThisYear.getFullYear() < date.tm_year+1900) {
              // first CW of this year starts last year
              daysDifference = date.tm_yday+32-firstWeekStartThisYear.getDate()
            } else {
              // first CW of this year starts this year
              daysDifference = date.tm_yday+1-firstWeekStartThisYear.getDate();
            }
            return leadingNulls(Math.ceil(daysDifference/7), 2);
          },
          '%w': function(date) {
            var day = new Date(date.tm_year+1900, date.tm_mon+1, date.tm_mday, 0, 0, 0, 0);
            return day.getDay();
          },
          '%W': function(date) {
            // Replaced by the week number of the year as a decimal number [00,53].
            // The first Monday of January is the first day of week 1;
            // days in the new year before this are in week 0. [ tm_year, tm_wday, tm_yday]
            var janFirst = new Date(date.tm_year, 0, 1);
            var firstMonday = janFirst.getDay() === 1 ? janFirst : __addDays(janFirst, janFirst.getDay() === 0 ? 1 : 7-janFirst.getDay()+1);
            var endDate = new Date(date.tm_year+1900, date.tm_mon, date.tm_mday);
    
            // is target date after the first Monday?
            if (compareByDay(firstMonday, endDate) < 0) {
              var februaryFirstUntilEndMonth = __arraySum(__isLeapYear(endDate.getFullYear()) ? __MONTH_DAYS_LEAP : __MONTH_DAYS_REGULAR, endDate.getMonth()-1)-31;
              var firstMondayUntilEndJanuary = 31-firstMonday.getDate();
              var days = firstMondayUntilEndJanuary+februaryFirstUntilEndMonth+endDate.getDate();
              return leadingNulls(Math.ceil(days/7), 2);
            }
            return compareByDay(firstMonday, janFirst) === 0 ? '01': '00';
          },
          '%y': function(date) {
            // Replaced by the last two digits of the year as a decimal number [00,99]. [ tm_year]
            return (date.tm_year+1900).toString().substring(2);
          },
          '%Y': function(date) {
            // Replaced by the year as a decimal number (for example, 1997). [ tm_year]
            return date.tm_year+1900;
          },
          '%z': function(date) {
            // Replaced by the offset from UTC in the ISO 8601:2000 standard format ( +hhmm or -hhmm ).
            // For example, "-0430" means 4 hours 30 minutes behind UTC (west of Greenwich).
            var off = date.tm_gmtoff;
            var ahead = off >= 0;
            off = Math.abs(off) / 60;
            // convert from minutes into hhmm format (which means 60 minutes = 100 units)
            off = (off / 60)*100 + (off % 60);
            return (ahead ? '+' : '-') + String("0000" + off).slice(-4);
          },
          '%Z': function(date) {
            return date.tm_zone;
          },
          '%%': function() {
            return '%';
          }
        };
        for (var rule in EXPANSION_RULES_2) {
          if (pattern.indexOf(rule) >= 0) {
            pattern = pattern.replace(new RegExp(rule, 'g'), EXPANSION_RULES_2[rule](date));
          }
        }
    
        var bytes = intArrayFromString(pattern, false);
        if (bytes.length > maxsize) {
          return 0;
        }
    
        writeArrayToMemory(bytes, s);
        return bytes.length-1;
      }function _strftime_l(s, maxsize, format, tm) {
        return _strftime(s, maxsize, format, tm); // no locale support yet
      }
  
  FS.staticInit();__ATINIT__.unshift(function() { if (!Module["noFSInit"] && !FS.init.initialized) FS.init() });__ATMAIN__.push(function() { FS.ignorePermissions = false });__ATEXIT__.push(function() { FS.quit() });Module["FS_createFolder"] = FS.createFolder;Module["FS_createPath"] = FS.createPath;Module["FS_createDataFile"] = FS.createDataFile;Module["FS_createPreloadedFile"] = FS.createPreloadedFile;Module["FS_createLazyFile"] = FS.createLazyFile;Module["FS_createLink"] = FS.createLink;Module["FS_createDevice"] = FS.createDevice;Module["FS_unlink"] = FS.unlink;;
  __ATINIT__.unshift(function() { TTY.init() });__ATEXIT__.push(function() { TTY.shutdown() });;
  if (ENVIRONMENT_IS_NODE) { var fs = require("fs"); var NODEJS_PATH = require("path"); NODEFS.staticInit(); };
  DYNAMICTOP_PTR = staticAlloc(4);
  
  STACK_BASE = STACKTOP = alignMemory(STATICTOP);
  
  STACK_MAX = STACK_BASE + TOTAL_STACK;
  
  DYNAMIC_BASE = alignMemory(STACK_MAX);
  
  HEAP32[DYNAMICTOP_PTR>>2] = DYNAMIC_BASE;
  
  staticSealed = true; // seal the static portion of memory
  
  assert(DYNAMIC_BASE < TOTAL_MEMORY, "TOTAL_MEMORY not big enough for stack");
  
  var ASSERTIONS = true;
  
  // Copyright 2017 The Emscripten Authors.  All rights reserved.
  // Emscripten is available under two separate licenses, the MIT license and the
  // University of Illinois/NCSA Open Source License.  Both these licenses can be
  // found in the LICENSE file.
  
  /** @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('');
  }
  
  
  
  function nullFunc_ii(x) { err("Invalid function pointer called with signature 'ii'. 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)");  err("Build with ASSERTIONS=2 for more info.");abort(x) }
  
  function nullFunc_iii(x) { err("Invalid function pointer called with signature 'iii'. 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)");  err("Build with ASSERTIONS=2 for more info.");abort(x) }
  
  function nullFunc_iiii(x) { err("Invalid function pointer called with signature 'iiii'. 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)");  err("Build with ASSERTIONS=2 for more info.");abort(x) }
  
  function nullFunc_iiiii(x) { err("Invalid function pointer called with signature 'iiiii'. 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)");  err("Build with ASSERTIONS=2 for more info.");abort(x) }
  
  function nullFunc_iiiiid(x) { err("Invalid function pointer called with signature 'iiiiid'. 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)");  err("Build with ASSERTIONS=2 for more info.");abort(x) }
  
  function nullFunc_iiiiii(x) { err("Invalid function pointer called with signature 'iiiiii'. 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)");  err("Build with ASSERTIONS=2 for more info.");abort(x) }
  
  function nullFunc_iiiiiid(x) { err("Invalid function pointer called with signature 'iiiiiid'. 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)");  err("Build with ASSERTIONS=2 for more info.");abort(x) }
  
  function nullFunc_iiiiiii(x) { err("Invalid function pointer called with signature 'iiiiiii'. 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)");  err("Build with ASSERTIONS=2 for more info.");abort(x) }
  
  function nullFunc_iiiiiiii(x) { err("Invalid function pointer called with signature 'iiiiiiii'. 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)");  err("Build with ASSERTIONS=2 for more info.");abort(x) }
  
  function nullFunc_iiiiiiiii(x) { err("Invalid function pointer called with signature 'iiiiiiiii'. 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)");  err("Build with ASSERTIONS=2 for more info.");abort(x) }
  
  function nullFunc_iiiiij(x) { err("Invalid function pointer called with signature 'iiiiij'. 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)");  err("Build with ASSERTIONS=2 for more info.");abort(x) }
  
  function nullFunc_v(x) { err("Invalid function pointer called with signature 'v'. 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)");  err("Build with ASSERTIONS=2 for more info.");abort(x) }
  
  function nullFunc_vi(x) { err("Invalid function pointer called with signature 'vi'. 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)");  err("Build with ASSERTIONS=2 for more info.");abort(x) }
  
  function nullFunc_vii(x) { err("Invalid function pointer called with signature 'vii'. 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)");  err("Build with ASSERTIONS=2 for more info.");abort(x) }
  
  function nullFunc_viii(x) { err("Invalid function pointer called with signature 'viii'. 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)");  err("Build with ASSERTIONS=2 for more info.");abort(x) }
  
  function nullFunc_viiii(x) { err("Invalid function pointer called with signature 'viiii'. 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)");  err("Build with ASSERTIONS=2 for more info.");abort(x) }
  
  function nullFunc_viiiii(x) { err("Invalid function pointer called with signature 'viiiii'. 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)");  err("Build with ASSERTIONS=2 for more info.");abort(x) }
  
  function nullFunc_viiiiii(x) { err("Invalid function pointer called with signature 'viiiiii'. 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)");  err("Build with ASSERTIONS=2 for more info.");abort(x) }
  
  function nullFunc_viijii(x) { err("Invalid function pointer called with signature 'viijii'. 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)");  err("Build with ASSERTIONS=2 for more info.");abort(x) }
  
  Module['wasmTableSize'] = 7489;
  
  Module['wasmMaxTableSize'] = 7489;
  
  function invoke_ii(index,a1) {
    var sp = stackSave();
    try {
      return Module["dynCall_ii"](index,a1);
    } catch(e) {
      stackRestore(sp);
      if (typeof e !== 'number' && e !== 'longjmp') throw e;
      Module["setThrew"](1, 0);
    }
  }
  
  function invoke_iii(index,a1,a2) {
    var sp = stackSave();
    try {
      return Module["dynCall_iii"](index,a1,a2);
    } catch(e) {
      stackRestore(sp);
      if (typeof e !== 'number' && e !== 'longjmp') throw e;
      Module["setThrew"](1, 0);
    }
  }
  
  function invoke_iiii(index,a1,a2,a3) {
    var sp = stackSave();
    try {
      return Module["dynCall_iiii"](index,a1,a2,a3);
    } catch(e) {
      stackRestore(sp);
      if (typeof e !== 'number' && e !== 'longjmp') throw e;
      Module["setThrew"](1, 0);
    }
  }
  
  function invoke_iiiii(index,a1,a2,a3,a4) {
    var sp = stackSave();
    try {
      return Module["dynCall_iiiii"](index,a1,a2,a3,a4);
    } catch(e) {
      stackRestore(sp);
      if (typeof e !== 'number' && e !== 'longjmp') throw e;
      Module["setThrew"](1, 0);
    }
  }
  
  function invoke_iiiiid(index,a1,a2,a3,a4,a5) {
    var sp = stackSave();
    try {
      return Module["dynCall_iiiiid"](index,a1,a2,a3,a4,a5);
    } catch(e) {
      stackRestore(sp);
      if (typeof e !== 'number' && e !== 'longjmp') throw e;
      Module["setThrew"](1, 0);
    }
  }
  
  function invoke_iiiiii(index,a1,a2,a3,a4,a5) {
    var sp = stackSave();
    try {
      return Module["dynCall_iiiiii"](index,a1,a2,a3,a4,a5);
    } catch(e) {
      stackRestore(sp);
      if (typeof e !== 'number' && e !== 'longjmp') throw e;
      Module["setThrew"](1, 0);
    }
  }
  
  function invoke_iiiiiid(index,a1,a2,a3,a4,a5,a6) {
    var sp = stackSave();
    try {
      return Module["dynCall_iiiiiid"](index,a1,a2,a3,a4,a5,a6);
    } catch(e) {
      stackRestore(sp);
      if (typeof e !== 'number' && e !== 'longjmp') throw e;
      Module["setThrew"](1, 0);
    }
  }
  
  function invoke_iiiiiii(index,a1,a2,a3,a4,a5,a6) {
    var sp = stackSave();
    try {
      return Module["dynCall_iiiiiii"](index,a1,a2,a3,a4,a5,a6);
    } catch(e) {
      stackRestore(sp);
      if (typeof e !== 'number' && e !== 'longjmp') throw e;
      Module["setThrew"](1, 0);
    }
  }
  
  function invoke_iiiiiiii(index,a1,a2,a3,a4,a5,a6,a7) {
    var sp = stackSave();
    try {
      return Module["dynCall_iiiiiiii"](index,a1,a2,a3,a4,a5,a6,a7);
    } catch(e) {
      stackRestore(sp);
      if (typeof e !== 'number' && e !== 'longjmp') throw e;
      Module["setThrew"](1, 0);
    }
  }
  
  function invoke_iiiiiiiii(index,a1,a2,a3,a4,a5,a6,a7,a8) {
    var sp = stackSave();
    try {
      return Module["dynCall_iiiiiiiii"](index,a1,a2,a3,a4,a5,a6,a7,a8);
    } catch(e) {
      stackRestore(sp);
      if (typeof e !== 'number' && e !== 'longjmp') throw e;
      Module["setThrew"](1, 0);
    }
  }
  
  function invoke_iiiiij(index,a1,a2,a3,a4,a5,a6) {
    var sp = stackSave();
    try {
      return Module["dynCall_iiiiij"](index,a1,a2,a3,a4,a5,a6);
    } catch(e) {
      stackRestore(sp);
      if (typeof e !== 'number' && e !== 'longjmp') throw e;
      Module["setThrew"](1, 0);
    }
  }
  
  function invoke_v(index) {
    var sp = stackSave();
    try {
      Module["dynCall_v"](index);
    } catch(e) {
      stackRestore(sp);
      if (typeof e !== 'number' && e !== 'longjmp') throw e;
      Module["setThrew"](1, 0);
    }
  }
  
  function invoke_vi(index,a1) {
    var sp = stackSave();
    try {
      Module["dynCall_vi"](index,a1);
    } catch(e) {
      stackRestore(sp);
      if (typeof e !== 'number' && e !== 'longjmp') throw e;
      Module["setThrew"](1, 0);
    }
  }
  
  function invoke_vii(index,a1,a2) {
    var sp = stackSave();
    try {
      Module["dynCall_vii"](index,a1,a2);
    } catch(e) {
      stackRestore(sp);
      if (typeof e !== 'number' && e !== 'longjmp') throw e;
      Module["setThrew"](1, 0);
    }
  }
  
  function invoke_viii(index,a1,a2,a3) {
    var sp = stackSave();
    try {
      Module["dynCall_viii"](index,a1,a2,a3);
    } catch(e) {
      stackRestore(sp);
      if (typeof e !== 'number' && e !== 'longjmp') throw e;
      Module["setThrew"](1, 0);
    }
  }
  
  function invoke_viiii(index,a1,a2,a3,a4) {
    var sp = stackSave();
    try {
      Module["dynCall_viiii"](index,a1,a2,a3,a4);
    } catch(e) {
      stackRestore(sp);
      if (typeof e !== 'number' && e !== 'longjmp') throw e;
      Module["setThrew"](1, 0);
    }
  }
  
  function invoke_viiiii(index,a1,a2,a3,a4,a5) {
    var sp = stackSave();
    try {
      Module["dynCall_viiiii"](index,a1,a2,a3,a4,a5);
    } catch(e) {
      stackRestore(sp);
      if (typeof e !== 'number' && e !== 'longjmp') throw e;
      Module["setThrew"](1, 0);
    }
  }
  
  function invoke_viiiiii(index,a1,a2,a3,a4,a5,a6) {
    var sp = stackSave();
    try {
      Module["dynCall_viiiiii"](index,a1,a2,a3,a4,a5,a6);
    } catch(e) {
      stackRestore(sp);
      if (typeof e !== 'number' && e !== 'longjmp') throw e;
      Module["setThrew"](1, 0);
    }
  }
  
  function invoke_viijii(index,a1,a2,a3,a4,a5,a6) {
    var sp = stackSave();
    try {
      Module["dynCall_viijii"](index,a1,a2,a3,a4,a5,a6);
    } catch(e) {
      stackRestore(sp);
      if (typeof e !== 'number' && e !== 'longjmp') throw e;
      Module["setThrew"](1, 0);
    }
  }
  
  Module.asmGlobalArg = {};
  
  Module.asmLibraryArg = { "abort": abort, "assert": assert, "enlargeMemory": enlargeMemory, "getTotalMemory": getTotalMemory, "abortOnCannotGrowMemory": abortOnCannotGrowMemory, "abortStackOverflow": abortStackOverflow, "nullFunc_ii": nullFunc_ii, "nullFunc_iii": nullFunc_iii, "nullFunc_iiii": nullFunc_iiii, "nullFunc_iiiii": nullFunc_iiiii, "nullFunc_iiiiid": nullFunc_iiiiid, "nullFunc_iiiiii": nullFunc_iiiiii, "nullFunc_iiiiiid": nullFunc_iiiiiid, "nullFunc_iiiiiii": nullFunc_iiiiiii, "nullFunc_iiiiiiii": nullFunc_iiiiiiii, "nullFunc_iiiiiiiii": nullFunc_iiiiiiiii, "nullFunc_iiiiij": nullFunc_iiiiij, "nullFunc_v": nullFunc_v, "nullFunc_vi": nullFunc_vi, "nullFunc_vii": nullFunc_vii, "nullFunc_viii": nullFunc_viii, "nullFunc_viiii": nullFunc_viiii, "nullFunc_viiiii": nullFunc_viiiii, "nullFunc_viiiiii": nullFunc_viiiiii, "nullFunc_viijii": nullFunc_viijii, "invoke_ii": invoke_ii, "invoke_iii": invoke_iii, "invoke_iiii": invoke_iiii, "invoke_iiiii": invoke_iiiii, "invoke_iiiiid": invoke_iiiiid, "invoke_iiiiii": invoke_iiiiii, "invoke_iiiiiid": invoke_iiiiiid, "invoke_iiiiiii": invoke_iiiiiii, "invoke_iiiiiiii": invoke_iiiiiiii, "invoke_iiiiiiiii": invoke_iiiiiiiii, "invoke_iiiiij": invoke_iiiiij, "invoke_v": invoke_v, "invoke_vi": invoke_vi, "invoke_vii": invoke_vii, "invoke_viii": invoke_viii, "invoke_viiii": invoke_viiii, "invoke_viiiii": invoke_viiiii, "invoke_viiiiii": invoke_viiiiii, "invoke_viijii": invoke_viijii, "___cxa_allocate_exception": ___cxa_allocate_exception, "___cxa_begin_catch": ___cxa_begin_catch, "___cxa_find_matching_catch": ___cxa_find_matching_catch, "___cxa_throw": ___cxa_throw, "___cxa_uncaught_exception": ___cxa_uncaught_exception, "___gxx_personality_v0": ___gxx_personality_v0, "___lock": ___lock, "___map_file": ___map_file, "___resumeException": ___resumeException, "___setErrNo": ___setErrNo, "___syscall140": ___syscall140, "___syscall145": ___syscall145, "___syscall146": ___syscall146, "___syscall221": ___syscall221, "___syscall5": ___syscall5, "___syscall54": ___syscall54, "___syscall6": ___syscall6, "___syscall91": ___syscall91, "___unlock": ___unlock, "__addDays": __addDays, "__arraySum": __arraySum, "__isLeapYear": __isLeapYear, "_abort": _abort, "_emscripten_memcpy_big": _emscripten_memcpy_big, "_getenv": _getenv, "_llvm_stackrestore": _llvm_stackrestore, "_llvm_stacksave": _llvm_stacksave, "_pthread_cond_wait": _pthread_cond_wait, "_pthread_getspecific": _pthread_getspecific, "_pthread_key_create": _pthread_key_create, "_pthread_once": _pthread_once, "_pthread_setspecific": _pthread_setspecific, "_strftime": _strftime, "_strftime_l": _strftime_l, "DYNAMICTOP_PTR": DYNAMICTOP_PTR, "tempDoublePtr": tempDoublePtr, "STACKTOP": STACKTOP, "STACK_MAX": STACK_MAX };
  // EMSCRIPTEN_START_ASM
  var asm =Module["asm"]// EMSCRIPTEN_END_ASM
  (Module.asmGlobalArg, Module.asmLibraryArg, buffer);
  
  var real___GLOBAL__I_000101 = asm["__GLOBAL__I_000101"]; asm["__GLOBAL__I_000101"] = function() {
    assert(runtimeInitialized, 'you need to wait for the runtime to be ready (e.g. wait for main() to be called)');
    assert(!runtimeExited, 'the runtime was exited (use NO_EXIT_RUNTIME to keep it alive after main() exits)');
    return real___GLOBAL__I_000101.apply(null, arguments);
  };
  
  var real___GLOBAL__sub_I_iostream_cpp = asm["__GLOBAL__sub_I_iostream_cpp"]; asm["__GLOBAL__sub_I_iostream_cpp"] = function() {
    assert(runtimeInitialized, 'you need to wait for the runtime to be ready (e.g. wait for main() to be called)');
    assert(!runtimeExited, 'the runtime was exited (use NO_EXIT_RUNTIME to keep it alive after main() exits)');
    return real___GLOBAL__sub_I_iostream_cpp.apply(null, arguments);
  };
  
  var real___ZSt18uncaught_exceptionv = asm["__ZSt18uncaught_exceptionv"]; asm["__ZSt18uncaught_exceptionv"] = function() {
    assert(runtimeInitialized, 'you need to wait for the runtime to be ready (e.g. wait for main() to be called)');
    assert(!runtimeExited, 'the runtime was exited (use NO_EXIT_RUNTIME to keep it alive after main() exits)');
    return real___ZSt18uncaught_exceptionv.apply(null, arguments);
  };
  
  var real____cxa_can_catch = asm["___cxa_can_catch"]; asm["___cxa_can_catch"] = function() {
    assert(runtimeInitialized, 'you need to wait for the runtime to be ready (e.g. wait for main() to be called)');
    assert(!runtimeExited, 'the runtime was exited (use NO_EXIT_RUNTIME to keep it alive after main() exits)');
    return real____cxa_can_catch.apply(null, arguments);
  };
  
  var real____cxa_is_pointer_type = asm["___cxa_is_pointer_type"]; asm["___cxa_is_pointer_type"] = function() {
    assert(runtimeInitialized, 'you need to wait for the runtime to be ready (e.g. wait for main() to be called)');
    assert(!runtimeExited, 'the runtime was exited (use NO_EXIT_RUNTIME to keep it alive after main() exits)');
    return real____cxa_is_pointer_type.apply(null, arguments);
  };
  
  var real____errno_location = asm["___errno_location"]; asm["___errno_location"] = function() {
    assert(runtimeInitialized, 'you need to wait for the runtime to be ready (e.g. wait for main() to be called)');
    assert(!runtimeExited, 'the runtime was exited (use NO_EXIT_RUNTIME to keep it alive after main() exits)');
    return real____errno_location.apply(null, arguments);
  };
  
  var real__fflush = asm["_fflush"]; asm["_fflush"] = function() {
    assert(runtimeInitialized, 'you need to wait for the runtime to be ready (e.g. wait for main() to be called)');
    assert(!runtimeExited, 'the runtime was exited (use NO_EXIT_RUNTIME to keep it alive after main() exits)');
    return real__fflush.apply(null, arguments);
  };
  
  var real__free = asm["_free"]; asm["_free"] = function() {
    assert(runtimeInitialized, 'you need to wait for the runtime to be ready (e.g. wait for main() to be called)');
    assert(!runtimeExited, 'the runtime was exited (use NO_EXIT_RUNTIME to keep it alive after main() exits)');
    return real__free.apply(null, arguments);
  };
  
  var real__llvm_bswap_i32 = asm["_llvm_bswap_i32"]; asm["_llvm_bswap_i32"] = function() {
    assert(runtimeInitialized, 'you need to wait for the runtime to be ready (e.g. wait for main() to be called)');
    assert(!runtimeExited, 'the runtime was exited (use NO_EXIT_RUNTIME to keep it alive after main() exits)');
    return real__llvm_bswap_i32.apply(null, arguments);
  };
  
  var real__main = asm["_main"]; asm["_main"] = function() {
    assert(runtimeInitialized, 'you need to wait for the runtime to be ready (e.g. wait for main() to be called)');
    assert(!runtimeExited, 'the runtime was exited (use NO_EXIT_RUNTIME to keep it alive after main() exits)');
    return real__main.apply(null, arguments);
  };
  
  var real__malloc = asm["_malloc"]; asm["_malloc"] = function() {
    assert(runtimeInitialized, 'you need to wait for the runtime to be ready (e.g. wait for main() to be called)');
    assert(!runtimeExited, 'the runtime was exited (use NO_EXIT_RUNTIME to keep it alive after main() exits)');
    return real__malloc.apply(null, arguments);
  };
  
  var real__memmove = asm["_memmove"]; asm["_memmove"] = function() {
    assert(runtimeInitialized, 'you need to wait for the runtime to be ready (e.g. wait for main() to be called)');
    assert(!runtimeExited, 'the runtime was exited (use NO_EXIT_RUNTIME to keep it alive after main() exits)');
    return real__memmove.apply(null, arguments);
  };
  
  var real__pthread_cond_broadcast = asm["_pthread_cond_broadcast"]; asm["_pthread_cond_broadcast"] = function() {
    assert(runtimeInitialized, 'you need to wait for the runtime to be ready (e.g. wait for main() to be called)');
    assert(!runtimeExited, 'the runtime was exited (use NO_EXIT_RUNTIME to keep it alive after main() exits)');
    return real__pthread_cond_broadcast.apply(null, arguments);
  };
  
  var real__pthread_mutex_lock = asm["_pthread_mutex_lock"]; asm["_pthread_mutex_lock"] = function() {
    assert(runtimeInitialized, 'you need to wait for the runtime to be ready (e.g. wait for main() to be called)');
    assert(!runtimeExited, 'the runtime was exited (use NO_EXIT_RUNTIME to keep it alive after main() exits)');
    return real__pthread_mutex_lock.apply(null, arguments);
  };
  
  var real__pthread_mutex_unlock = asm["_pthread_mutex_unlock"]; asm["_pthread_mutex_unlock"] = function() {
    assert(runtimeInitialized, 'you need to wait for the runtime to be ready (e.g. wait for main() to be called)');
    assert(!runtimeExited, 'the runtime was exited (use NO_EXIT_RUNTIME to keep it alive after main() exits)');
    return real__pthread_mutex_unlock.apply(null, arguments);
  };
  
  var real__sbrk = asm["_sbrk"]; asm["_sbrk"] = function() {
    assert(runtimeInitialized, 'you need to wait for the runtime to be ready (e.g. wait for main() to be called)');
    assert(!runtimeExited, 'the runtime was exited (use NO_EXIT_RUNTIME to keep it alive after main() exits)');
    return real__sbrk.apply(null, arguments);
  };
  
  var real_establishStackSpace = asm["establishStackSpace"]; asm["establishStackSpace"] = function() {
    assert(runtimeInitialized, 'you need to wait for the runtime to be ready (e.g. wait for main() to be called)');
    assert(!runtimeExited, 'the runtime was exited (use NO_EXIT_RUNTIME to keep it alive after main() exits)');
    return real_establishStackSpace.apply(null, arguments);
  };
  
  var real_getTempRet0 = asm["getTempRet0"]; asm["getTempRet0"] = function() {
    assert(runtimeInitialized, 'you need to wait for the runtime to be ready (e.g. wait for main() to be called)');
    assert(!runtimeExited, 'the runtime was exited (use NO_EXIT_RUNTIME to keep it alive after main() exits)');
    return real_getTempRet0.apply(null, arguments);
  };
  
  var real_setTempRet0 = asm["setTempRet0"]; asm["setTempRet0"] = function() {
    assert(runtimeInitialized, 'you need to wait for the runtime to be ready (e.g. wait for main() to be called)');
    assert(!runtimeExited, 'the runtime was exited (use NO_EXIT_RUNTIME to keep it alive after main() exits)');
    return real_setTempRet0.apply(null, arguments);
  };
  
  var real_setThrew = asm["setThrew"]; asm["setThrew"] = function() {
    assert(runtimeInitialized, 'you need to wait for the runtime to be ready (e.g. wait for main() to be called)');
    assert(!runtimeExited, 'the runtime was exited (use NO_EXIT_RUNTIME to keep it alive after main() exits)');
    return real_setThrew.apply(null, arguments);
  };
  
  var real_stackAlloc = asm["stackAlloc"]; asm["stackAlloc"] = function() {
    assert(runtimeInitialized, 'you need to wait for the runtime to be ready (e.g. wait for main() to be called)');
    assert(!runtimeExited, 'the runtime was exited (use NO_EXIT_RUNTIME to keep it alive after main() exits)');
    return real_stackAlloc.apply(null, arguments);
  };
  
  var real_stackRestore = asm["stackRestore"]; asm["stackRestore"] = function() {
    assert(runtimeInitialized, 'you need to wait for the runtime to be ready (e.g. wait for main() to be called)');
    assert(!runtimeExited, 'the runtime was exited (use NO_EXIT_RUNTIME to keep it alive after main() exits)');
    return real_stackRestore.apply(null, arguments);
  };
  
  var real_stackSave = asm["stackSave"]; asm["stackSave"] = function() {
    assert(runtimeInitialized, 'you need to wait for the runtime to be ready (e.g. wait for main() to be called)');
    assert(!runtimeExited, 'the runtime was exited (use NO_EXIT_RUNTIME to keep it alive after main() exits)');
    return real_stackSave.apply(null, arguments);
  };
  Module["asm"] = asm;
  var __GLOBAL__I_000101 = Module["__GLOBAL__I_000101"] = function() {
    assert(runtimeInitialized, 'you need to wait for the runtime to be ready (e.g. wait for main() to be called)');
    assert(!runtimeExited, 'the runtime was exited (use NO_EXIT_RUNTIME to keep it alive after main() exits)');
    return Module["asm"]["__GLOBAL__I_000101"].apply(null, arguments) };
  var __GLOBAL__sub_I_iostream_cpp = Module["__GLOBAL__sub_I_iostream_cpp"] = function() {
    assert(runtimeInitialized, 'you need to wait for the runtime to be ready (e.g. wait for main() to be called)');
    assert(!runtimeExited, 'the runtime was exited (use NO_EXIT_RUNTIME to keep it alive after main() exits)');
    return Module["asm"]["__GLOBAL__sub_I_iostream_cpp"].apply(null, arguments) };
  var __ZSt18uncaught_exceptionv = Module["__ZSt18uncaught_exceptionv"] = function() {
    assert(runtimeInitialized, 'you need to wait for the runtime to be ready (e.g. wait for main() to be called)');
    assert(!runtimeExited, 'the runtime was exited (use NO_EXIT_RUNTIME to keep it alive after main() exits)');
    return Module["asm"]["__ZSt18uncaught_exceptionv"].apply(null, arguments) };
  var ___cxa_can_catch = Module["___cxa_can_catch"] = function() {
    assert(runtimeInitialized, 'you need to wait for the runtime to be ready (e.g. wait for main() to be called)');
    assert(!runtimeExited, 'the runtime was exited (use NO_EXIT_RUNTIME to keep it alive after main() exits)');
    return Module["asm"]["___cxa_can_catch"].apply(null, arguments) };
  var ___cxa_is_pointer_type = Module["___cxa_is_pointer_type"] = function() {
    assert(runtimeInitialized, 'you need to wait for the runtime to be ready (e.g. wait for main() to be called)');
    assert(!runtimeExited, 'the runtime was exited (use NO_EXIT_RUNTIME to keep it alive after main() exits)');
    return Module["asm"]["___cxa_is_pointer_type"].apply(null, arguments) };
  var ___errno_location = Module["___errno_location"] = function() {
    assert(runtimeInitialized, 'you need to wait for the runtime to be ready (e.g. wait for main() to be called)');
    assert(!runtimeExited, 'the runtime was exited (use NO_EXIT_RUNTIME to keep it alive after main() exits)');
    return Module["asm"]["___errno_location"].apply(null, arguments) };
  var _fflush = Module["_fflush"] = function() {
    assert(runtimeInitialized, 'you need to wait for the runtime to be ready (e.g. wait for main() to be called)');
    assert(!runtimeExited, 'the runtime was exited (use NO_EXIT_RUNTIME to keep it alive after main() exits)');
    return Module["asm"]["_fflush"].apply(null, arguments) };
  var _free = Module["_free"] = function() {
    assert(runtimeInitialized, 'you need to wait for the runtime to be ready (e.g. wait for main() to be called)');
    assert(!runtimeExited, 'the runtime was exited (use NO_EXIT_RUNTIME to keep it alive after main() exits)');
    return Module["asm"]["_free"].apply(null, arguments) };
  var _llvm_bswap_i32 = Module["_llvm_bswap_i32"] = function() {
    assert(runtimeInitialized, 'you need to wait for the runtime to be ready (e.g. wait for main() to be called)');
    assert(!runtimeExited, 'the runtime was exited (use NO_EXIT_RUNTIME to keep it alive after main() exits)');
    return Module["asm"]["_llvm_bswap_i32"].apply(null, arguments) };
  var _main = Module["_main"] = function() {
    assert(runtimeInitialized, 'you need to wait for the runtime to be ready (e.g. wait for main() to be called)');
    assert(!runtimeExited, 'the runtime was exited (use NO_EXIT_RUNTIME to keep it alive after main() exits)');
    return Module["asm"]["_main"].apply(null, arguments) };
  var _malloc = Module["_malloc"] = function() {
    assert(runtimeInitialized, 'you need to wait for the runtime to be ready (e.g. wait for main() to be called)');
    assert(!runtimeExited, 'the runtime was exited (use NO_EXIT_RUNTIME to keep it alive after main() exits)');
    return Module["asm"]["_malloc"].apply(null, arguments) };
  var _memcpy = Module["_memcpy"] = function() {
    assert(runtimeInitialized, 'you need to wait for the runtime to be ready (e.g. wait for main() to be called)');
    assert(!runtimeExited, 'the runtime was exited (use NO_EXIT_RUNTIME to keep it alive after main() exits)');
    return Module["asm"]["_memcpy"].apply(null, arguments) };
  var _memmove = Module["_memmove"] = function() {
    assert(runtimeInitialized, 'you need to wait for the runtime to be ready (e.g. wait for main() to be called)');
    assert(!runtimeExited, 'the runtime was exited (use NO_EXIT_RUNTIME to keep it alive after main() exits)');
    return Module["asm"]["_memmove"].apply(null, arguments) };
  var _memset = Module["_memset"] = function() {
    assert(runtimeInitialized, 'you need to wait for the runtime to be ready (e.g. wait for main() to be called)');
    assert(!runtimeExited, 'the runtime was exited (use NO_EXIT_RUNTIME to keep it alive after main() exits)');
    return Module["asm"]["_memset"].apply(null, arguments) };
  var _pthread_cond_broadcast = Module["_pthread_cond_broadcast"] = function() {
    assert(runtimeInitialized, 'you need to wait for the runtime to be ready (e.g. wait for main() to be called)');
    assert(!runtimeExited, 'the runtime was exited (use NO_EXIT_RUNTIME to keep it alive after main() exits)');
    return Module["asm"]["_pthread_cond_broadcast"].apply(null, arguments) };
  var _pthread_mutex_lock = Module["_pthread_mutex_lock"] = function() {
    assert(runtimeInitialized, 'you need to wait for the runtime to be ready (e.g. wait for main() to be called)');
    assert(!runtimeExited, 'the runtime was exited (use NO_EXIT_RUNTIME to keep it alive after main() exits)');
    return Module["asm"]["_pthread_mutex_lock"].apply(null, arguments) };
  var _pthread_mutex_unlock = Module["_pthread_mutex_unlock"] = function() {
    assert(runtimeInitialized, 'you need to wait for the runtime to be ready (e.g. wait for main() to be called)');
    assert(!runtimeExited, 'the runtime was exited (use NO_EXIT_RUNTIME to keep it alive after main() exits)');
    return Module["asm"]["_pthread_mutex_unlock"].apply(null, arguments) };
  var _sbrk = Module["_sbrk"] = function() {
    assert(runtimeInitialized, 'you need to wait for the runtime to be ready (e.g. wait for main() to be called)');
    assert(!runtimeExited, 'the runtime was exited (use NO_EXIT_RUNTIME to keep it alive after main() exits)');
    return Module["asm"]["_sbrk"].apply(null, arguments) };
  var establishStackSpace = Module["establishStackSpace"] = function() {
    assert(runtimeInitialized, 'you need to wait for the runtime to be ready (e.g. wait for main() to be called)');
    assert(!runtimeExited, 'the runtime was exited (use NO_EXIT_RUNTIME to keep it alive after main() exits)');
    return Module["asm"]["establishStackSpace"].apply(null, arguments) };
  var getTempRet0 = Module["getTempRet0"] = function() {
    assert(runtimeInitialized, 'you need to wait for the runtime to be ready (e.g. wait for main() to be called)');
    assert(!runtimeExited, 'the runtime was exited (use NO_EXIT_RUNTIME to keep it alive after main() exits)');
    return Module["asm"]["getTempRet0"].apply(null, arguments) };
  var runPostSets = Module["runPostSets"] = function() {
    assert(runtimeInitialized, 'you need to wait for the runtime to be ready (e.g. wait for main() to be called)');
    assert(!runtimeExited, 'the runtime was exited (use NO_EXIT_RUNTIME to keep it alive after main() exits)');
    return Module["asm"]["runPostSets"].apply(null, arguments) };
  var setTempRet0 = Module["setTempRet0"] = function() {
    assert(runtimeInitialized, 'you need to wait for the runtime to be ready (e.g. wait for main() to be called)');
    assert(!runtimeExited, 'the runtime was exited (use NO_EXIT_RUNTIME to keep it alive after main() exits)');
    return Module["asm"]["setTempRet0"].apply(null, arguments) };
  var setThrew = Module["setThrew"] = function() {
    assert(runtimeInitialized, 'you need to wait for the runtime to be ready (e.g. wait for main() to be called)');
    assert(!runtimeExited, 'the runtime was exited (use NO_EXIT_RUNTIME to keep it alive after main() exits)');
    return Module["asm"]["setThrew"].apply(null, arguments) };
  var stackAlloc = Module["stackAlloc"] = function() {
    assert(runtimeInitialized, 'you need to wait for the runtime to be ready (e.g. wait for main() to be called)');
    assert(!runtimeExited, 'the runtime was exited (use NO_EXIT_RUNTIME to keep it alive after main() exits)');
    return Module["asm"]["stackAlloc"].apply(null, arguments) };
  var stackRestore = Module["stackRestore"] = function() {
    assert(runtimeInitialized, 'you need to wait for the runtime to be ready (e.g. wait for main() to be called)');
    assert(!runtimeExited, 'the runtime was exited (use NO_EXIT_RUNTIME to keep it alive after main() exits)');
    return Module["asm"]["stackRestore"].apply(null, arguments) };
  var stackSave = Module["stackSave"] = function() {
    assert(runtimeInitialized, 'you need to wait for the runtime to be ready (e.g. wait for main() to be called)');
    assert(!runtimeExited, 'the runtime was exited (use NO_EXIT_RUNTIME to keep it alive after main() exits)');
    return Module["asm"]["stackSave"].apply(null, arguments) };
  var dynCall_ii = Module["dynCall_ii"] = function() {
    assert(runtimeInitialized, 'you need to wait for the runtime to be ready (e.g. wait for main() to be called)');
    assert(!runtimeExited, 'the runtime was exited (use NO_EXIT_RUNTIME to keep it alive after main() exits)');
    return Module["asm"]["dynCall_ii"].apply(null, arguments) };
  var dynCall_iii = Module["dynCall_iii"] = function() {
    assert(runtimeInitialized, 'you need to wait for the runtime to be ready (e.g. wait for main() to be called)');
    assert(!runtimeExited, 'the runtime was exited (use NO_EXIT_RUNTIME to keep it alive after main() exits)');
    return Module["asm"]["dynCall_iii"].apply(null, arguments) };
  var dynCall_iiii = Module["dynCall_iiii"] = function() {
    assert(runtimeInitialized, 'you need to wait for the runtime to be ready (e.g. wait for main() to be called)');
    assert(!runtimeExited, 'the runtime was exited (use NO_EXIT_RUNTIME to keep it alive after main() exits)');
    return Module["asm"]["dynCall_iiii"].apply(null, arguments) };
  var dynCall_iiiii = Module["dynCall_iiiii"] = function() {
    assert(runtimeInitialized, 'you need to wait for the runtime to be ready (e.g. wait for main() to be called)');
    assert(!runtimeExited, 'the runtime was exited (use NO_EXIT_RUNTIME to keep it alive after main() exits)');
    return Module["asm"]["dynCall_iiiii"].apply(null, arguments) };
  var dynCall_iiiiid = Module["dynCall_iiiiid"] = function() {
    assert(runtimeInitialized, 'you need to wait for the runtime to be ready (e.g. wait for main() to be called)');
    assert(!runtimeExited, 'the runtime was exited (use NO_EXIT_RUNTIME to keep it alive after main() exits)');
    return Module["asm"]["dynCall_iiiiid"].apply(null, arguments) };
  var dynCall_iiiiii = Module["dynCall_iiiiii"] = function() {
    assert(runtimeInitialized, 'you need to wait for the runtime to be ready (e.g. wait for main() to be called)');
    assert(!runtimeExited, 'the runtime was exited (use NO_EXIT_RUNTIME to keep it alive after main() exits)');
    return Module["asm"]["dynCall_iiiiii"].apply(null, arguments) };
  var dynCall_iiiiiid = Module["dynCall_iiiiiid"] = function() {
    assert(runtimeInitialized, 'you need to wait for the runtime to be ready (e.g. wait for main() to be called)');
    assert(!runtimeExited, 'the runtime was exited (use NO_EXIT_RUNTIME to keep it alive after main() exits)');
    return Module["asm"]["dynCall_iiiiiid"].apply(null, arguments) };
  var dynCall_iiiiiii = Module["dynCall_iiiiiii"] = function() {
    assert(runtimeInitialized, 'you need to wait for the runtime to be ready (e.g. wait for main() to be called)');
    assert(!runtimeExited, 'the runtime was exited (use NO_EXIT_RUNTIME to keep it alive after main() exits)');
    return Module["asm"]["dynCall_iiiiiii"].apply(null, arguments) };
  var dynCall_iiiiiiii = Module["dynCall_iiiiiiii"] = function() {
    assert(runtimeInitialized, 'you need to wait for the runtime to be ready (e.g. wait for main() to be called)');
    assert(!runtimeExited, 'the runtime was exited (use NO_EXIT_RUNTIME to keep it alive after main() exits)');
    return Module["asm"]["dynCall_iiiiiiii"].apply(null, arguments) };
  var dynCall_iiiiiiiii = Module["dynCall_iiiiiiiii"] = function() {
    assert(runtimeInitialized, 'you need to wait for the runtime to be ready (e.g. wait for main() to be called)');
    assert(!runtimeExited, 'the runtime was exited (use NO_EXIT_RUNTIME to keep it alive after main() exits)');
    return Module["asm"]["dynCall_iiiiiiiii"].apply(null, arguments) };
  var dynCall_iiiiij = Module["dynCall_iiiiij"] = function() {
    assert(runtimeInitialized, 'you need to wait for the runtime to be ready (e.g. wait for main() to be called)');
    assert(!runtimeExited, 'the runtime was exited (use NO_EXIT_RUNTIME to keep it alive after main() exits)');
    return Module["asm"]["dynCall_iiiiij"].apply(null, arguments) };
  var dynCall_v = Module["dynCall_v"] = function() {
    assert(runtimeInitialized, 'you need to wait for the runtime to be ready (e.g. wait for main() to be called)');
    assert(!runtimeExited, 'the runtime was exited (use NO_EXIT_RUNTIME to keep it alive after main() exits)');
    return Module["asm"]["dynCall_v"].apply(null, arguments) };
  var dynCall_vi = Module["dynCall_vi"] = function() {
    assert(runtimeInitialized, 'you need to wait for the runtime to be ready (e.g. wait for main() to be called)');
    assert(!runtimeExited, 'the runtime was exited (use NO_EXIT_RUNTIME to keep it alive after main() exits)');
    return Module["asm"]["dynCall_vi"].apply(null, arguments) };
  var dynCall_vii = Module["dynCall_vii"] = function() {
    assert(runtimeInitialized, 'you need to wait for the runtime to be ready (e.g. wait for main() to be called)');
    assert(!runtimeExited, 'the runtime was exited (use NO_EXIT_RUNTIME to keep it alive after main() exits)');
    return Module["asm"]["dynCall_vii"].apply(null, arguments) };
  var dynCall_viii = Module["dynCall_viii"] = function() {
    assert(runtimeInitialized, 'you need to wait for the runtime to be ready (e.g. wait for main() to be called)');
    assert(!runtimeExited, 'the runtime was exited (use NO_EXIT_RUNTIME to keep it alive after main() exits)');
    return Module["asm"]["dynCall_viii"].apply(null, arguments) };
  var dynCall_viiii = Module["dynCall_viiii"] = function() {
    assert(runtimeInitialized, 'you need to wait for the runtime to be ready (e.g. wait for main() to be called)');
    assert(!runtimeExited, 'the runtime was exited (use NO_EXIT_RUNTIME to keep it alive after main() exits)');
    return Module["asm"]["dynCall_viiii"].apply(null, arguments) };
  var dynCall_viiiii = Module["dynCall_viiiii"] = function() {
    assert(runtimeInitialized, 'you need to wait for the runtime to be ready (e.g. wait for main() to be called)');
    assert(!runtimeExited, 'the runtime was exited (use NO_EXIT_RUNTIME to keep it alive after main() exits)');
    return Module["asm"]["dynCall_viiiii"].apply(null, arguments) };
  var dynCall_viiiiii = Module["dynCall_viiiiii"] = function() {
    assert(runtimeInitialized, 'you need to wait for the runtime to be ready (e.g. wait for main() to be called)');
    assert(!runtimeExited, 'the runtime was exited (use NO_EXIT_RUNTIME to keep it alive after main() exits)');
    return Module["asm"]["dynCall_viiiiii"].apply(null, arguments) };
  var dynCall_viijii = Module["dynCall_viijii"] = function() {
    assert(runtimeInitialized, 'you need to wait for the runtime to be ready (e.g. wait for main() to be called)');
    assert(!runtimeExited, 'the runtime was exited (use NO_EXIT_RUNTIME to keep it alive after main() exits)');
    return Module["asm"]["dynCall_viijii"].apply(null, arguments) };
  ;
  
  
  
  // === Auto-generated postamble setup entry stuff ===
  
  Module['asm'] = asm;
  
  if (!Module["intArrayFromString"]) Module["intArrayFromString"] = function() { abort("'intArrayFromString' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Module["intArrayToString"]) Module["intArrayToString"] = function() { abort("'intArrayToString' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Module["ccall"]) Module["ccall"] = function() { abort("'ccall' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Module["cwrap"]) Module["cwrap"] = function() { abort("'cwrap' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Module["setValue"]) Module["setValue"] = function() { abort("'setValue' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Module["getValue"]) Module["getValue"] = function() { abort("'getValue' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Module["allocate"]) Module["allocate"] = function() { abort("'allocate' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  Module["getMemory"] = getMemory;
  if (!Module["Pointer_stringify"]) Module["Pointer_stringify"] = function() { abort("'Pointer_stringify' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Module["AsciiToString"]) Module["AsciiToString"] = function() { abort("'AsciiToString' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Module["stringToAscii"]) Module["stringToAscii"] = function() { abort("'stringToAscii' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Module["UTF8ArrayToString"]) Module["UTF8ArrayToString"] = function() { abort("'UTF8ArrayToString' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Module["UTF8ToString"]) Module["UTF8ToString"] = function() { abort("'UTF8ToString' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Module["stringToUTF8Array"]) Module["stringToUTF8Array"] = function() { abort("'stringToUTF8Array' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Module["stringToUTF8"]) Module["stringToUTF8"] = function() { abort("'stringToUTF8' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Module["lengthBytesUTF8"]) Module["lengthBytesUTF8"] = function() { abort("'lengthBytesUTF8' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Module["UTF16ToString"]) Module["UTF16ToString"] = function() { abort("'UTF16ToString' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Module["stringToUTF16"]) Module["stringToUTF16"] = function() { abort("'stringToUTF16' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Module["lengthBytesUTF16"]) Module["lengthBytesUTF16"] = function() { abort("'lengthBytesUTF16' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Module["UTF32ToString"]) Module["UTF32ToString"] = function() { abort("'UTF32ToString' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Module["stringToUTF32"]) Module["stringToUTF32"] = function() { abort("'stringToUTF32' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Module["lengthBytesUTF32"]) Module["lengthBytesUTF32"] = function() { abort("'lengthBytesUTF32' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Module["allocateUTF8"]) Module["allocateUTF8"] = function() { abort("'allocateUTF8' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Module["stackTrace"]) Module["stackTrace"] = function() { abort("'stackTrace' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Module["addOnPreRun"]) Module["addOnPreRun"] = function() { abort("'addOnPreRun' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Module["addOnInit"]) Module["addOnInit"] = function() { abort("'addOnInit' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Module["addOnPreMain"]) Module["addOnPreMain"] = function() { abort("'addOnPreMain' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Module["addOnExit"]) Module["addOnExit"] = function() { abort("'addOnExit' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Module["addOnPostRun"]) Module["addOnPostRun"] = function() { abort("'addOnPostRun' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Module["writeStringToMemory"]) Module["writeStringToMemory"] = function() { abort("'writeStringToMemory' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Module["writeArrayToMemory"]) Module["writeArrayToMemory"] = function() { abort("'writeArrayToMemory' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Module["writeAsciiToMemory"]) Module["writeAsciiToMemory"] = function() { abort("'writeAsciiToMemory' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  Module["addRunDependency"] = addRunDependency;
  Module["removeRunDependency"] = removeRunDependency;
  if (!Module["ENV"]) Module["ENV"] = function() { abort("'ENV' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Module["FS"]) Module["FS"] = function() { abort("'FS' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  Module["FS_createFolder"] = FS.createFolder;
  Module["FS_createPath"] = FS.createPath;
  Module["FS_createDataFile"] = FS.createDataFile;
  Module["FS_createPreloadedFile"] = FS.createPreloadedFile;
  Module["FS_createLazyFile"] = FS.createLazyFile;
  Module["FS_createLink"] = FS.createLink;
  Module["FS_createDevice"] = FS.createDevice;
  Module["FS_unlink"] = FS.unlink;
  if (!Module["GL"]) Module["GL"] = function() { abort("'GL' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Module["staticAlloc"]) Module["staticAlloc"] = function() { abort("'staticAlloc' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Module["dynamicAlloc"]) Module["dynamicAlloc"] = function() { abort("'dynamicAlloc' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Module["warnOnce"]) Module["warnOnce"] = function() { abort("'warnOnce' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Module["loadDynamicLibrary"]) Module["loadDynamicLibrary"] = function() { abort("'loadDynamicLibrary' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Module["loadWebAssemblyModule"]) Module["loadWebAssemblyModule"] = function() { abort("'loadWebAssemblyModule' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Module["getLEB"]) Module["getLEB"] = function() { abort("'getLEB' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Module["getFunctionTables"]) Module["getFunctionTables"] = function() { abort("'getFunctionTables' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Module["alignFunctionTables"]) Module["alignFunctionTables"] = function() { abort("'alignFunctionTables' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Module["registerFunctions"]) Module["registerFunctions"] = function() { abort("'registerFunctions' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Module["addFunction"]) Module["addFunction"] = function() { abort("'addFunction' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Module["removeFunction"]) Module["removeFunction"] = function() { abort("'removeFunction' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Module["getFuncWrapper"]) Module["getFuncWrapper"] = function() { abort("'getFuncWrapper' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Module["prettyPrint"]) Module["prettyPrint"] = function() { abort("'prettyPrint' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Module["makeBigInt"]) Module["makeBigInt"] = function() { abort("'makeBigInt' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Module["dynCall"]) Module["dynCall"] = function() { abort("'dynCall' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Module["getCompilerSetting"]) Module["getCompilerSetting"] = function() { abort("'getCompilerSetting' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Module["stackSave"]) Module["stackSave"] = function() { abort("'stackSave' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Module["stackRestore"]) Module["stackRestore"] = function() { abort("'stackRestore' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Module["stackAlloc"]) Module["stackAlloc"] = function() { abort("'stackAlloc' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Module["establishStackSpace"]) Module["establishStackSpace"] = function() { abort("'establishStackSpace' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Module["print"]) Module["print"] = function() { abort("'print' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };
  if (!Module["printErr"]) Module["printErr"] = function() { abort("'printErr' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") };if (!Module["ALLOC_NORMAL"]) Object.defineProperty(Module, "ALLOC_NORMAL", { get: function() { abort("'ALLOC_NORMAL' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") } });
  if (!Module["ALLOC_STACK"]) Object.defineProperty(Module, "ALLOC_STACK", { get: function() { abort("'ALLOC_STACK' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") } });
  if (!Module["ALLOC_STATIC"]) Object.defineProperty(Module, "ALLOC_STATIC", { get: function() { abort("'ALLOC_STATIC' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") } });
  if (!Module["ALLOC_DYNAMIC"]) Object.defineProperty(Module, "ALLOC_DYNAMIC", { get: function() { abort("'ALLOC_DYNAMIC' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") } });
  if (!Module["ALLOC_NONE"]) Object.defineProperty(Module, "ALLOC_NONE", { get: function() { abort("'ALLOC_NONE' was not exported. add it to EXTRA_EXPORTED_RUNTIME_METHODS (see the FAQ)") } });
  
  
  
  
  /**
   * @constructor
   * @extends {Error}
   * @this {ExitStatus}
   */
  function ExitStatus(status) {
    this.name = "ExitStatus";
    this.message = "Program terminated with exit(" + status + ")";
    this.status = status;
  };
  ExitStatus.prototype = new Error();
  ExitStatus.prototype.constructor = ExitStatus;
  
  var initialStackTop;
  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 (!Module['calledRun']) run();
    if (!Module['calledRun']) dependenciesFulfilled = runCaller; // try this again later, after new deps are fulfilled
  }
  
  Module['callMain'] = function callMain(args) {
    assert(runDependencies == 0, 'cannot call main when async dependencies remain! (listen on __ATMAIN__)');
    assert(__ATPRERUN__.length == 0, 'cannot call main when preRun functions remain to be called');
  
    args = args || [];
  
    ensureInitRuntime();
  
    var argc = args.length+1;
    var argv = stackAlloc((argc + 1) * 4);
    HEAP32[argv >> 2] = allocateUTF8OnStack(Module['thisProgram']);
    for (var i = 1; i < argc; i++) {
      HEAP32[(argv >> 2) + i] = allocateUTF8OnStack(args[i - 1]);
    }
    HEAP32[(argv >> 2) + argc] = 0;
  
  
    try {
  
      var ret = Module['_main'](argc, argv, 0);
  
  
      // 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 == 'SimulateInfiniteLoop') {
        // running an evented main loop, don't immediately exit
        Module['noExitRuntime'] = true;
        return;
      } else {
        var toLog = e;
        if (e && typeof e === 'object' && e.stack) {
          toLog = [e, e.stack];
        }
        err('exception thrown: ' + toLog);
        Module['quit'](1, e);
      }
    } finally {
      calledMain = true;
    }
  }
  
  
  
  
  /** @type {function(Array=)} */
  function run(args) {
    args = args || Module['arguments'];
  
    if (runDependencies > 0) {
      return;
    }
  
    writeStackCookie();
  
    preRun();
  
    if (runDependencies > 0) return; // a preRun added a dependency, run will be called later
    if (Module['calledRun']) return; // run may have just been called through dependencies being fulfilled just in this very frame
  
    function doRun() {
      if (Module['calledRun']) return; // run may have just been called while the async setStatus time below was happening
      Module['calledRun'] = true;
  
      if (ABORT) return;
  
      ensureInitRuntime();
  
      preMain();
  
      if (Module['onRuntimeInitialized']) Module['onRuntimeInitialized']();
  
      if (Module['_main'] && shouldRunNow) Module['callMain'](args);
  
      postRun();
    }
  
    if (Module['setStatus']) {
      Module['setStatus']('Running...');
      setTimeout(function() {
        setTimeout(function() {
          Module['setStatus']('');
        }, 1);
        doRun();
      }, 1);
    } else {
      doRun();
    }
    checkStackCookie();
  }
  Module['run'] = run;
  
  function checkUnflushedContent() {
    // Compiler settings do not allow exiting the runtime, so flushing
    // the streams is not possible. but in ASSERTIONS mode we check
    // if there was something to flush, and if so tell the user they
    // should request that the runtime be exitable.
    // Normally we would not even include flush() at all, but in ASSERTIONS
    // builds we do so just for this check, and here we see if there is any
    // content to flush, that is, we check if there would have been
    // something a non-ASSERTIONS build would have not seen.
    // How we flush the streams depends on whether we are in FILESYSTEM=0
    // mode (which has its own special function for this; otherwise, all
    // the code is inside libc)
    var print = out;
    var printErr = err;
    var has = false;
    out = err = function(x) {
      has = true;
    }
    try { // it doesn't matter if it fails
      var flush = Module['_fflush'];
      if (flush) flush(0);
      // also flush in the JS FS layer
      var hasFS = true;
      if (hasFS) {
        ['stdout', 'stderr'].forEach(function(name) {
          var info = FS.analyzePath('/dev/' + name);
          if (!info) return;
          var stream = info.object;
          var rdev = stream.rdev;
          var tty = TTY.ttys[rdev];
          if (tty && tty.output && tty.output.length) {
            has = true;
          }
        });
      }
    } catch(e) {}
    out = print;
    err = printErr;
    if (has) {
      warnOnce('stdio streams had content in them that was not flushed. you should set EXIT_RUNTIME to 1 (see the FAQ), or make sure to emit a newline when you printf etc.');
    }
  }
  
  function exit(status, implicit) {
    checkUnflushedContent();
  
    // 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 && Module['noExitRuntime'] && status === 0) {
      return;
    }
  
    if (Module['noExitRuntime']) {
      // if exit() was called, we may warn the user if the runtime isn't actually being shut down
      if (!implicit) {
        err('exit(' + status + ') called, but EXIT_RUNTIME is not set, so halting execution but not exiting the runtime or preventing further async execution (build with EXIT_RUNTIME=1, if you want a true shutdown)');
      }
    } else {
  
      ABORT = true;
      EXITSTATUS = status;
      STACKTOP = initialStackTop;
  
      exitRuntime();
  
      if (Module['onExit']) Module['onExit'](status);
    }
  
    Module['quit'](status, new ExitStatus(status));
  }
  
  var abortDecorators = [];
  
  function abort(what) {
    if (Module['onAbort']) {
      Module['onAbort'](what);
    }
  
    if (what !== undefined) {
      out(what);
      err(what);
      what = JSON.stringify(what)
    } else {
      what = '';
    }
  
    ABORT = true;
    EXITSTATUS = 1;
  
    var extra = '';
    var output = 'abort(' + what + ') at ' + stackTrace() + extra;
    if (abortDecorators) {
      abortDecorators.forEach(function(decorator) {
        output = decorator(output, what);
      });
    }
    throw output;
  }
  Module['abort'] = abort;
  
  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;
  }
  
  Module["noExitRuntime"] = true;
  
  run();
  
  
  
  
  
  // {{MODULE_ADDITIONS}}
  
  
  
  