var Module = typeof Module !== "undefined" ? Module : {};
var objAssign = Object.assign;
var moduleOverrides = objAssign({}, Module);
var arguments_ = [];
var thisProgram = "./this.program";
var quit_ = (status, toThrow) => {
   throw toThrow
};
var ENVIRONMENT_IS_WEB = typeof window === "object";
var ENVIRONMENT_IS_WORKER = typeof importScripts === "function";
var ENVIRONMENT_IS_NODE = typeof process === "object" && typeof process.versions === "object" && typeof process.versions.node === "string";
var scriptDirectory = "";

function locateFile(path) {
   if (Module["locateFile"]) {
      return Module["locateFile"](path, scriptDirectory)
   }
   return scriptDirectory + path
}
var read_, readAsync, readBinary, setWindowTitle;

function logExceptionOnExit(e) {
   if (e instanceof ExitStatus) return;
   let toLog = e;
   err("exiting due to exception: " + toLog)
}
var fs;
var nodePath;
var requireNodeFS;
if (ENVIRONMENT_IS_NODE) {
   if (ENVIRONMENT_IS_WORKER) {
      scriptDirectory = require("path").dirname(scriptDirectory) + "/"
   } else {
      scriptDirectory = __dirname + "/"
   }
   requireNodeFS = function () {
      if (!nodePath) {
         fs = require("fs");
         nodePath = require("path")
      }
   };
   read_ = function shell_read(filename, binary) {
      requireNodeFS();
      filename = nodePath["normalize"](filename);
      return fs.readFileSync(filename, binary ? null : "utf8")
   };
   readBinary = function readBinary(filename) {
      var ret = read_(filename, true);
      if (!ret.buffer) {
         ret = new Uint8Array(ret)
      }
      return ret
   };
   readAsync = function readAsync(filename, onload, onerror) {
      requireNodeFS();
      filename = nodePath["normalize"](filename);
      fs.readFile(filename, function (err, data) {
         if (err) onerror(err);
         else onload(data.buffer)
      })
   };
   if (process["argv"].length > 1) {
      thisProgram = process["argv"][1].replace(/\\/g, "/")
   }
   arguments_ = process["argv"].slice(2);
   if (typeof module !== "undefined") {
      module["exports"] = Module
   }
   process["on"]("uncaughtException", function (ex) {
      if (!(ex instanceof ExitStatus)) {
         throw ex
      }
   });
   process["on"]("unhandledRejection", function (reason) {
      throw reason
   });
   quit_ = ((status, toThrow) => {
      if (keepRuntimeAlive()) {
         process["exitCode"] = status;
         throw toThrow
      }
      logExceptionOnExit(toThrow);
      process["exit"](status)
   });
   Module["inspect"] = function () {
      return "[Emscripten Module object]"
   }
} else if (ENVIRONMENT_IS_WEB || ENVIRONMENT_IS_WORKER) {
   if (ENVIRONMENT_IS_WORKER) {
      scriptDirectory = self.location.href
   } else if (typeof document !== "undefined" && document.currentScript) {
      scriptDirectory = document.currentScript.src
   }
   if (scriptDirectory.indexOf("blob:") !== 0) {
      scriptDirectory = scriptDirectory.substr(0, scriptDirectory.replace(/[?#].*/, "").lastIndexOf("/") + 1)
   } else {
      //scriptDirectory = "";
	scriptDirectory = scriptDirectory.substr(0, scriptDirectory.replace(/[?#].*/, "").lastIndexOf("/") + 	1);
	scriptDirectory = scriptDirectory.split("blob:");
	scriptDirectory = scriptDirectory[1]+"js/";
   } {
      read_ = function (url) {
         var xhr = new XMLHttpRequest;
         xhr.open("GET", url, false);
         xhr.send(null);
         return xhr.responseText
      };
      if (ENVIRONMENT_IS_WORKER) {
         readBinary = function (url) {
            var xhr = new XMLHttpRequest;
            xhr.open("GET", url, false);
            xhr.responseType = "arraybuffer";
            xhr.send(null);
            return new Uint8Array(xhr.response)
         }
      }
      readAsync = function (url, onload, onerror) {
         var xhr = new XMLHttpRequest;
         xhr.open("GET", url, true);
         xhr.responseType = "arraybuffer";
         xhr.onload = function () {
            if (xhr.status == 200 || xhr.status == 0 && xhr.response) {
               onload(xhr.response);
               return
            }
            onerror()
         };
         xhr.onerror = onerror;
         xhr.send(null)
      }
   }
   setWindowTitle = (title => document.title = title)
} else {}
var out = Module["print"] || console.log.bind(console);
var err = Module["printErr"] || console.warn.bind(console);
objAssign(Module, moduleOverrides);
moduleOverrides = null;
if (Module["arguments"]) arguments_ = Module["arguments"];
if (Module["thisProgram"]) thisProgram = Module["thisProgram"];
if (Module["quit"]) quit_ = Module["quit"];
var wasmBinary;
if (Module["wasmBinary"]) wasmBinary = Module["wasmBinary"];
var noExitRuntime = Module["noExitRuntime"] || true;
if (typeof WebAssembly !== "object") {
   abort("no native wasm support detected")
}

function setValue(ptr, value, type, noSafe) {
   type = type || "i8";
   if (type.charAt(type.length - 1) === "*") type = "i32";
   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 ? tempDouble > 0 ? (Math.min(+Math.floor(tempDouble / 4294967296), 4294967295) | 0) >>> 0 : ~~+Math.ceil((tempDouble - +(~~tempDouble >>> 0)) / 4294967296) >>> 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)
   }
}

function getValue(ptr, type, noSafe) {
   type = type || "i8";
   if (type.charAt(type.length - 1) === "*") type = "i32";
   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 Number(HEAPF64[ptr >> 3]);
      default:
         abort("invalid type for getValue: " + type)
   }
   return null
}
var wasmMemory;
var ABORT = false;
var EXITSTATUS;

function assert(condition, text) {
   if (!condition) {
      abort(text)
   }
}

function getCFunc(ident) {
   var func = Module["_" + ident];
   return func
}

function ccall(ident, returnType, argTypes, args, opts) {
   var toC = {
      "string": function (str) {
         var ret = 0;
         if (str !== null && str !== undefined && str !== 0) {
            var len = (str.length << 2) + 1;
            ret = stackAlloc(len);
            stringToUTF8(str, ret, len)
         }
         return ret
      },
      "array": function (arr) {
         var ret = stackAlloc(arr.length);
         writeArrayToMemory(arr, ret);
         return ret
      }
   };

   function convertReturnValue(ret) {
      if (returnType === "string") return UTF8ToString(ret);
      if (returnType === "boolean") return Boolean(ret);
      return ret
   }
   var func = getCFunc(ident);
   var cArgs = [];
   var stack = 0;
   if (args) {
      for (var i = 0; i < args.length; i++) {
         var converter = toC[argTypes[i]];
         if (converter) {
            if (stack === 0) stack = stackSave();
            cArgs[i] = converter(args[i])
         } else {
            cArgs[i] = args[i]
         }
      }
   }
   var ret = func.apply(null, cArgs);

   function onDone(ret) {
      if (stack !== 0) stackRestore(stack);
      return convertReturnValue(ret)
   }
   ret = onDone(ret);
   return ret
}

function cwrap(ident, returnType, argTypes, opts) {
   argTypes = argTypes || [];
   var numericArgs = argTypes.every(function (type) {
      return type === "number"
   });
   var numericRet = returnType !== "string";
   if (numericRet && numericArgs && !opts) {
      return getCFunc(ident)
   }
   return function () {
      return ccall(ident, returnType, argTypes, arguments, opts)
   }
}
var UTF8Decoder = typeof TextDecoder !== "undefined" ? new TextDecoder("utf8") : undefined;

function UTF8ArrayToString(heap, idx, maxBytesToRead) {
   var endIdx = idx + maxBytesToRead;
   var endPtr = idx;
   while (heap[endPtr] && !(endPtr >= endIdx)) ++endPtr;
   if (endPtr - idx > 16 && heap.subarray && UTF8Decoder) {
      return UTF8Decoder.decode(heap.subarray(idx, endPtr))
   } else {
      var str = "";
      while (idx < endPtr) {
         var u0 = heap[idx++];
         if (!(u0 & 128)) {
            str += String.fromCharCode(u0);
            continue
         }
         var u1 = heap[idx++] & 63;
         if ((u0 & 224) == 192) {
            str += String.fromCharCode((u0 & 31) << 6 | u1);
            continue
         }
         var u2 = heap[idx++] & 63;
         if ((u0 & 240) == 224) {
            u0 = (u0 & 15) << 12 | u1 << 6 | u2
         } else {
            u0 = (u0 & 7) << 18 | u1 << 12 | u2 << 6 | heap[idx++] & 63
         }
         if (u0 < 65536) {
            str += String.fromCharCode(u0)
         } else {
            var ch = u0 - 65536;
            str += String.fromCharCode(55296 | ch >> 10, 56320 | ch & 1023)
         }
      }
   }
   return str
}

function UTF8ToString(ptr, maxBytesToRead) {
   return ptr ? UTF8ArrayToString(HEAPU8, ptr, maxBytesToRead) : ""
}

function stringToUTF8Array(str, heap, outIdx, maxBytesToWrite) {
   if (!(maxBytesToWrite > 0)) return 0;
   var startIdx = outIdx;
   var endIdx = outIdx + maxBytesToWrite - 1;
   for (var i = 0; i < str.length; ++i) {
      var u = str.charCodeAt(i);
      if (u >= 55296 && u <= 57343) {
         var u1 = str.charCodeAt(++i);
         u = 65536 + ((u & 1023) << 10) | u1 & 1023
      }
      if (u <= 127) {
         if (outIdx >= endIdx) break;
         heap[outIdx++] = u
      } else if (u <= 2047) {
         if (outIdx + 1 >= endIdx) break;
         heap[outIdx++] = 192 | u >> 6;
         heap[outIdx++] = 128 | u & 63
      } else if (u <= 65535) {
         if (outIdx + 2 >= endIdx) break;
         heap[outIdx++] = 224 | u >> 12;
         heap[outIdx++] = 128 | u >> 6 & 63;
         heap[outIdx++] = 128 | u & 63
      } else {
         if (outIdx + 3 >= endIdx) break;
         heap[outIdx++] = 240 | u >> 18;
         heap[outIdx++] = 128 | u >> 12 & 63;
         heap[outIdx++] = 128 | u >> 6 & 63;
         heap[outIdx++] = 128 | u & 63
      }
   }
   heap[outIdx] = 0;
   return outIdx - startIdx
}

function stringToUTF8(str, outPtr, maxBytesToWrite) {
   return stringToUTF8Array(str, HEAPU8, outPtr, maxBytesToWrite)
}

function lengthBytesUTF8(str) {
   var len = 0;
   for (var i = 0; i < str.length; ++i) {
      var u = str.charCodeAt(i);
      if (u >= 55296 && u <= 57343) u = 65536 + ((u & 1023) << 10) | str.charCodeAt(++i) & 1023;
      if (u <= 127) ++len;
      else if (u <= 2047) len += 2;
      else if (u <= 65535) len += 3;
      else len += 4
   }
   return len
}

function allocateUTF8(str) {
   var size = lengthBytesUTF8(str) + 1;
   var ret = _malloc(size);
   if (ret) stringToUTF8Array(str, HEAP8, ret, size);
   return ret
}

function writeArrayToMemory(array, buffer) {
   HEAP8.set(array, buffer)
}

function writeAsciiToMemory(str, buffer, dontAddNull) {
   for (var i = 0; i < str.length; ++i) {
      HEAP8[buffer++ >> 0] = str.charCodeAt(i)
   }
   if (!dontAddNull) HEAP8[buffer >> 0] = 0
}

function alignUp(x, multiple) {
   if (x % multiple > 0) {
      x += multiple - x % multiple
   }
   return x
}
var buffer, HEAP8, HEAPU8, HEAP16, HEAPU16, HEAP32, HEAPU32, HEAPF32, HEAPF64;

function updateGlobalBufferAndViews(buf) {
   buffer = buf;
   Module["HEAP8"] = HEAP8 = new Int8Array(buf);
   Module["HEAP16"] = HEAP16 = new Int16Array(buf);
   Module["HEAP32"] = HEAP32 = new Int32Array(buf);
   Module["HEAPU8"] = HEAPU8 = new Uint8Array(buf);
   Module["HEAPU16"] = HEAPU16 = new Uint16Array(buf);
   Module["HEAPU32"] = HEAPU32 = new Uint32Array(buf);
   Module["HEAPF32"] = HEAPF32 = new Float32Array(buf);
   Module["HEAPF64"] = HEAPF64 = new Float64Array(buf)
}
var INITIAL_MEMORY = Module["INITIAL_MEMORY"] || 16777216;
var wasmTable;
var __ATPRERUN__ = [];
var __ATINIT__ = [];
var __ATPOSTRUN__ = [];
var runtimeInitialized = false;
var runtimeExited = false;
var runtimeKeepaliveCounter = 0;

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

function preRun() {
   if (Module["preRun"]) {
      if (typeof Module["preRun"] == "function") Module["preRun"] = [Module["preRun"]];
      while (Module["preRun"].length) {
         addOnPreRun(Module["preRun"].shift())
      }
   }
   callRuntimeCallbacks(__ATPRERUN__)
}

function initRuntime() {
   runtimeInitialized = true;
   SOCKFS.root = FS.mount(SOCKFS, {}, null);
   if (!Module["noFSInit"] && !FS.init.initialized) FS.init();
   FS.ignorePermissions = false;
   TTY.init();
   callRuntimeCallbacks(__ATINIT__)
}

function exitRuntime() {
   runtimeExited = true
}

function postRun() {
   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 addOnPostRun(cb) {
   __ATPOSTRUN__.unshift(cb)
}
var runDependencies = 0;
var runDependencyWatcher = null;
var dependenciesFulfilled = null;

function getUniqueRunDependency(id) {
   return id
}

function addRunDependency(id) {
   runDependencies++;
   if (Module["monitorRunDependencies"]) {
      Module["monitorRunDependencies"](runDependencies)
   }
}

function removeRunDependency(id) {
   runDependencies--;
   if (Module["monitorRunDependencies"]) {
      Module["monitorRunDependencies"](runDependencies)
   }
   if (runDependencies == 0) {
      if (runDependencyWatcher !== null) {
         clearInterval(runDependencyWatcher);
         runDependencyWatcher = null
      }
      if (dependenciesFulfilled) {
         var callback = dependenciesFulfilled;
         dependenciesFulfilled = null;
         callback()
      }
   }
}
Module["preloadedImages"] = {};
Module["preloadedAudios"] = {};

function abort(what) {
   {
      if (Module["onAbort"]) {
         Module["onAbort"](what)
      }
   }
   what = "Aborted(" + what + ")";
   err(what);
   ABORT = true;
   EXITSTATUS = 1;
   what += ". Build with -s ASSERTIONS=1 for more info.";
   var e = new WebAssembly.RuntimeError(what);
   throw e
}
var dataURIPrefix = "data:application/octet-stream;base64,";

function isDataURI(filename) {
   return filename.startsWith(dataURIPrefix)
}

function isFileURI(filename) {
   return filename.startsWith("file://")
}
var wasmBinaryFile;
wasmBinaryFile = "unit3.wasm";
if (!isDataURI(wasmBinaryFile)) {
   wasmBinaryFile = locateFile(wasmBinaryFile)
}

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

function getBinaryPromise() {
   if (!wasmBinary && (ENVIRONMENT_IS_WEB || ENVIRONMENT_IS_WORKER)) {
      if (typeof fetch === "function" && !isFileURI(wasmBinaryFile)) {
         return fetch(wasmBinaryFile, {
            credentials: "same-origin"
         }).then(function (response) {
            if (!response["ok"]) {
               throw "failed to load wasm binary file at '" + wasmBinaryFile + "'"
            }
            return response["arrayBuffer"]()
         }).catch(function () {
            return getBinary(wasmBinaryFile)
         })
      } else {
         if (readAsync) {
            return new Promise(function (resolve, reject) {
               readAsync(wasmBinaryFile, function (response) {
                  resolve(new Uint8Array(response))
               }, reject)
            })
         }
      }
   }
   return Promise.resolve().then(function () {
      return getBinary(wasmBinaryFile)
   })
}

function createWasm() {
   var info = {
      "a": asmLibraryArg
   };

   function receiveInstance(instance, module) {
      var exports = instance.exports;
      Module["asm"] = exports;
      wasmMemory = Module["asm"]["Y"];
      updateGlobalBufferAndViews(wasmMemory.buffer);
      wasmTable = Module["asm"]["va"];
      addOnInit(Module["asm"]["Z"]);
      removeRunDependency("wasm-instantiate")
   }
   addRunDependency("wasm-instantiate");

   function receiveInstantiationResult(result) {
      receiveInstance(result["instance"])
   }

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

   function instantiateAsync() {
      if (!wasmBinary && typeof WebAssembly.instantiateStreaming === "function" && !isDataURI(wasmBinaryFile) && !isFileURI(wasmBinaryFile) && typeof fetch === "function") {
         return fetch(wasmBinaryFile, {
            credentials: "same-origin"
         }).then(function (response) {
            var result = WebAssembly.instantiateStreaming(response, info);
            return result.then(receiveInstantiationResult, function (reason) {
               err("wasm streaming compile failed: " + reason);
               err("falling back to ArrayBuffer instantiation");
               return instantiateArrayBuffer(receiveInstantiationResult)
            })
         })
      } else {
         return instantiateArrayBuffer(receiveInstantiationResult)
      }
   }
   if (Module["instantiateWasm"]) {
      try {
         var exports = Module["instantiateWasm"](info, receiveInstance);
         return exports
      } catch (e) {
         err("Module.instantiateWasm callback failed with error: " + e);
         return false
      }
   }
   instantiateAsync();
   return {}
}
var tempDouble;
var tempI64;

function callRuntimeCallbacks(callbacks) {
   while (callbacks.length > 0) {
      var callback = callbacks.shift();
      if (typeof callback == "function") {
         callback(Module);
         continue
      }
      var func = callback.func;
      if (typeof func === "number") {
         if (callback.arg === undefined) {
            getWasmTableEntry(func)()
         } else {
            getWasmTableEntry(func)(callback.arg)
         }
      } else {
         func(callback.arg === undefined ? null : callback.arg)
      }
   }
}
var wasmTableMirror = [];

function getWasmTableEntry(funcPtr) {
   var func = wasmTableMirror[funcPtr];
   if (!func) {
      if (funcPtr >= wasmTableMirror.length) wasmTableMirror.length = funcPtr + 1;
      wasmTableMirror[funcPtr] = func = wasmTable.get(funcPtr)
   }
   return func
}

function ___assert_fail(condition, filename, line, func) {
   abort("Assertion failed: " + UTF8ToString(condition) + ", at: " + [filename ? UTF8ToString(filename) : "unknown filename", line, func ? UTF8ToString(func) : "unknown function"])
}
var _emscripten_get_now;
if (ENVIRONMENT_IS_NODE) {
   _emscripten_get_now = (() => {
      var t = process["hrtime"]();
      return t[0] * 1e3 + t[1] / 1e6
   })
} else _emscripten_get_now = (() => performance.now());
var _emscripten_get_now_is_monotonic = true;

function setErrNo(value) {
   HEAP32[___errno_location() >> 2] = value;
   return value
}

function _clock_gettime(clk_id, tp) {
   var now;
   if (clk_id === 0) {
      now = Date.now()
   } else if ((clk_id === 1 || clk_id === 4) && _emscripten_get_now_is_monotonic) {
      now = _emscripten_get_now()
   } else {
      setErrNo(28);
      return -1
   }
   HEAP32[tp >> 2] = now / 1e3 | 0;
   HEAP32[tp + 4 >> 2] = now % 1e3 * 1e3 * 1e3 | 0;
   return 0
}

function ___clock_gettime(a0, a1) {
   return _clock_gettime(a0, a1)
}

function getRandomDevice() {
   if (typeof crypto === "object" && typeof crypto["getRandomValues"] === "function") {
      var randomBuffer = new Uint8Array(1);
      return function () {
         crypto.getRandomValues(randomBuffer);
         return randomBuffer[0]
      }
   } else if (ENVIRONMENT_IS_NODE) {
      try {
         var crypto_module = require("crypto");
         return function () {
            return crypto_module["randomBytes"](1)[0]
         }
      } catch (e) {}
   }
   return function () {
      abort("randomDevice")
   }
}
var PATH = {
   splitPath: function (filename) {
      var splitPathRe = /^(\/?|)([\s\S]*?)((?:\.{1,2}|[^\/]+?|)(\.[^.\/]*|))(?:[\/]*)$/;
      return splitPathRe.exec(filename).slice(1)
   },
   normalizeArray: function (parts, allowAboveRoot) {
      var up = 0;
      for (var i = parts.length - 1; i >= 0; i--) {
         var last = parts[i];
         if (last === ".") {
            parts.splice(i, 1)
         } else if (last === "..") {
            parts.splice(i, 1);
            up++
         } else if (up) {
            parts.splice(i, 1);
            up--
         }
      }
      if (allowAboveRoot) {
         for (; up; up--) {
            parts.unshift("..")
         }
      }
      return parts
   },
   normalize: function (path) {
      var isAbsolute = path.charAt(0) === "/",
         trailingSlash = path.substr(-1) === "/";
      path = PATH.normalizeArray(path.split("/").filter(function (p) {
         return !!p
      }), !isAbsolute).join("/");
      if (!path && !isAbsolute) {
         path = "."
      }
      if (path && trailingSlash) {
         path += "/"
      }
      return (isAbsolute ? "/" : "") + path
   },
   dirname: function (path) {
      var result = PATH.splitPath(path),
         root = result[0],
         dir = result[1];
      if (!root && !dir) {
         return "."
      }
      if (dir) {
         dir = dir.substr(0, dir.length - 1)
      }
      return root + dir
   },
   basename: function (path) {
      if (path === "/") return "/";
      path = PATH.normalize(path);
      path = path.replace(/\/$/, "");
      var lastSlash = path.lastIndexOf("/");
      if (lastSlash === -1) return path;
      return path.substr(lastSlash + 1)
   },
   extname: function (path) {
      return PATH.splitPath(path)[3]
   },
   join: function () {
      var paths = Array.prototype.slice.call(arguments, 0);
      return PATH.normalize(paths.join("/"))
   },
   join2: function (l, r) {
      return PATH.normalize(l + "/" + r)
   }
};
var PATH_FS = {
   resolve: function () {
      var resolvedPath = "",
         resolvedAbsolute = false;
      for (var i = arguments.length - 1; i >= -1 && !resolvedAbsolute; i--) {
         var path = i >= 0 ? arguments[i] : FS.cwd();
         if (typeof path !== "string") {
            throw new TypeError("Arguments to path.resolve must be strings")
         } else if (!path) {
            return ""
         }
         resolvedPath = path + "/" + resolvedPath;
         resolvedAbsolute = path.charAt(0) === "/"
      }
      resolvedPath = PATH.normalizeArray(resolvedPath.split("/").filter(function (p) {
         return !!p
      }), !resolvedAbsolute).join("/");
      return (resolvedAbsolute ? "/" : "") + resolvedPath || "."
   },
   relative: function (from, to) {
      from = PATH_FS.resolve(from).substr(1);
      to = PATH_FS.resolve(to).substr(1);

      function trim(arr) {
         var start = 0;
         for (; start < arr.length; start++) {
            if (arr[start] !== "") break
         }
         var end = arr.length - 1;
         for (; end >= 0; end--) {
            if (arr[end] !== "") break
         }
         if (start > end) return [];
         return arr.slice(start, end - start + 1)
      }
      var fromParts = trim(from.split("/"));
      var toParts = trim(to.split("/"));
      var length = Math.min(fromParts.length, toParts.length);
      var samePartsLength = length;
      for (var i = 0; i < length; i++) {
         if (fromParts[i] !== toParts[i]) {
            samePartsLength = i;
            break
         }
      }
      var outputParts = [];
      for (var i = samePartsLength; i < fromParts.length; i++) {
         outputParts.push("..")
      }
      outputParts = outputParts.concat(toParts.slice(samePartsLength));
      return outputParts.join("/")
   }
};
var TTY = {
   ttys: [],
   init: function () {},
   shutdown: function () {},
   register: function (dev, ops) {
      TTY.ttys[dev] = {
         input: [],
         output: [],
         ops: ops
      };
      FS.registerDevice(dev, TTY.stream_ops)
   },
   stream_ops: {
      open: function (stream) {
         var tty = TTY.ttys[stream.node.rdev];
         if (!tty) {
            throw new FS.ErrnoError(43)
         }
         stream.tty = tty;
         stream.seekable = false
      },
      close: function (stream) {
         stream.tty.ops.flush(stream.tty)
      },
      flush: function (stream) {
         stream.tty.ops.flush(stream.tty)
      },
      read: function (stream, buffer, offset, length, pos) {
         if (!stream.tty || !stream.tty.ops.get_char) {
            throw new FS.ErrnoError(60)
         }
         var bytesRead = 0;
         for (var i = 0; i < length; i++) {
            var result;
            try {
               result = stream.tty.ops.get_char(stream.tty)
            } catch (e) {
               throw new FS.ErrnoError(29)
            }
            if (result === undefined && bytesRead === 0) {
               throw new FS.ErrnoError(6)
            }
            if (result === null || result === undefined) break;
            bytesRead++;
            buffer[offset + i] = result
         }
         if (bytesRead) {
            stream.node.timestamp = Date.now()
         }
         return bytesRead
      },
      write: function (stream, buffer, offset, length, pos) {
         if (!stream.tty || !stream.tty.ops.put_char) {
            throw new FS.ErrnoError(60)
         }
         try {
            for (var i = 0; i < length; i++) {
               stream.tty.ops.put_char(stream.tty, buffer[offset + i])
            }
         } catch (e) {
            throw new FS.ErrnoError(29)
         }
         if (length) {
            stream.node.timestamp = Date.now()
         }
         return i
      }
   },
   default_tty_ops: {
      get_char: function (tty) {
         if (!tty.input.length) {
            var result = null;
            if (ENVIRONMENT_IS_NODE) {
               var BUFSIZE = 256;
               var buf = Buffer.alloc(BUFSIZE);
               var bytesRead = 0;
               try {
                  bytesRead = fs.readSync(process.stdin.fd, buf, 0, BUFSIZE, null)
               } catch (e) {
                  if (e.toString().includes("EOF")) bytesRead = 0;
                  else throw e
               }
               if (bytesRead > 0) {
                  result = buf.slice(0, bytesRead).toString("utf-8")
               } else {
                  result = null
               }
            } else if (typeof window != "undefined" && typeof window.prompt == "function") {
               result = window.prompt("Input: ");
               if (result !== null) {
                  result += "\n"
               }
            } else if (typeof readline == "function") {
               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)
         }
      },
      flush: function (tty) {
         if (tty.output && tty.output.length > 0) {
            out(UTF8ArrayToString(tty.output, 0));
            tty.output = []
         }
      }
   },
   default_tty1_ops: {
      put_char: function (tty, val) {
         if (val === null || val === 10) {
            err(UTF8ArrayToString(tty.output, 0));
            tty.output = []
         } else {
            if (val != 0) tty.output.push(val)
         }
      },
      flush: function (tty) {
         if (tty.output && tty.output.length > 0) {
            err(UTF8ArrayToString(tty.output, 0));
            tty.output = []
         }
      }
   }
};

function zeroMemory(address, size) {
   HEAPU8.fill(0, address, address + size)
}

function alignMemory(size, alignment) {
   return Math.ceil(size / alignment) * alignment
}

function mmapAlloc(size) {
   size = alignMemory(size, 65536);
   var ptr = _memalign(65536, size);
   if (!ptr) return 0;
   zeroMemory(ptr, size);
   return ptr
}
var MEMFS = {
   ops_table: null,
   mount: function (mount) {
      return MEMFS.createNode(null, "/", 16384 | 511, 0)
   },
   createNode: function (parent, name, mode, dev) {
      if (FS.isBlkdev(mode) || FS.isFIFO(mode)) {
         throw new FS.ErrnoError(63)
      }
      if (!MEMFS.ops_table) {
         MEMFS.ops_table = {
            dir: {
               node: {
                  getattr: MEMFS.node_ops.getattr,
                  setattr: MEMFS.node_ops.setattr,
                  lookup: MEMFS.node_ops.lookup,
                  mknod: MEMFS.node_ops.mknod,
                  rename: MEMFS.node_ops.rename,
                  unlink: MEMFS.node_ops.unlink,
                  rmdir: MEMFS.node_ops.rmdir,
                  readdir: MEMFS.node_ops.readdir,
                  symlink: MEMFS.node_ops.symlink
               },
               stream: {
                  llseek: MEMFS.stream_ops.llseek
               }
            },
            file: {
               node: {
                  getattr: MEMFS.node_ops.getattr,
                  setattr: MEMFS.node_ops.setattr
               },
               stream: {
                  llseek: MEMFS.stream_ops.llseek,
                  read: MEMFS.stream_ops.read,
                  write: MEMFS.stream_ops.write,
                  allocate: MEMFS.stream_ops.allocate,
                  mmap: MEMFS.stream_ops.mmap,
                  msync: MEMFS.stream_ops.msync
               }
            },
            link: {
               node: {
                  getattr: MEMFS.node_ops.getattr,
                  setattr: MEMFS.node_ops.setattr,
                  readlink: MEMFS.node_ops.readlink
               },
               stream: {}
            },
            chrdev: {
               node: {
                  getattr: MEMFS.node_ops.getattr,
                  setattr: MEMFS.node_ops.setattr
               },
               stream: FS.chrdev_stream_ops
            }
         }
      }
      var node = FS.createNode(parent, name, mode, dev);
      if (FS.isDir(node.mode)) {
         node.node_ops = MEMFS.ops_table.dir.node;
         node.stream_ops = MEMFS.ops_table.dir.stream;
         node.contents = {}
      } else if (FS.isFile(node.mode)) {
         node.node_ops = MEMFS.ops_table.file.node;
         node.stream_ops = MEMFS.ops_table.file.stream;
         node.usedBytes = 0;
         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();
      if (parent) {
         parent.contents[name] = node;
         parent.timestamp = node.timestamp
      }
      return node
   },
   getFileDataAsTypedArray: function (node) {
      if (!node.contents) return new Uint8Array(0);
      if (node.contents.subarray) return node.contents.subarray(0, node.usedBytes);
      return new Uint8Array(node.contents)
   },
   expandFileStorage: function (node, newCapacity) {
      var prevCapacity = node.contents ? node.contents.length : 0;
      if (prevCapacity >= newCapacity) return;
      var CAPACITY_DOUBLING_MAX = 1024 * 1024;
      newCapacity = Math.max(newCapacity, prevCapacity * (prevCapacity < CAPACITY_DOUBLING_MAX ? 2 : 1.125) >>> 0);
      if (prevCapacity != 0) newCapacity = Math.max(newCapacity, 256);
      var oldContents = node.contents;
      node.contents = new Uint8Array(newCapacity);
      if (node.usedBytes > 0) node.contents.set(oldContents.subarray(0, node.usedBytes), 0)
   },
   resizeFileStorage: function (node, newSize) {
      if (node.usedBytes == newSize) return;
      if (newSize == 0) {
         node.contents = null;
         node.usedBytes = 0
      } else {
         var oldContents = node.contents;
         node.contents = new Uint8Array(newSize);
         if (oldContents) {
            node.contents.set(oldContents.subarray(0, Math.min(newSize, node.usedBytes)))
         }
         node.usedBytes = newSize
      }
   },
   node_ops: {
      getattr: function (node) {
         var attr = {};
         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);
         attr.blksize = 4096;
         attr.blocks = Math.ceil(attr.size / attr.blksize);
         return attr
      },
      setattr: function (node, attr) {
         if (attr.mode !== undefined) {
            node.mode = attr.mode
         }
         if (attr.timestamp !== undefined) {
            node.timestamp = attr.timestamp
         }
         if (attr.size !== undefined) {
            MEMFS.resizeFileStorage(node, attr.size)
         }
      },
      lookup: function (parent, name) {
         throw FS.genericErrors[44]
      },
      mknod: function (parent, name, mode, dev) {
         return MEMFS.createNode(parent, name, mode, dev)
      },
      rename: function (old_node, new_dir, new_name) {
         if (FS.isDir(old_node.mode)) {
            var new_node;
            try {
               new_node = FS.lookupNode(new_dir, new_name)
            } catch (e) {}
            if (new_node) {
               for (var i in new_node.contents) {
                  throw new FS.ErrnoError(55)
               }
            }
         }
         delete old_node.parent.contents[old_node.name];
         old_node.parent.timestamp = Date.now();
         old_node.name = new_name;
         new_dir.contents[new_name] = old_node;
         new_dir.timestamp = old_node.parent.timestamp;
         old_node.parent = new_dir
      },
      unlink: function (parent, name) {
         delete parent.contents[name];
         parent.timestamp = Date.now()
      },
      rmdir: function (parent, name) {
         var node = FS.lookupNode(parent, name);
         for (var i in node.contents) {
            throw new FS.ErrnoError(55)
         }
         delete parent.contents[name];
         parent.timestamp = Date.now()
      },
      readdir: function (node) {
         var entries = [".", ".."];
         for (var key in node.contents) {
            if (!node.contents.hasOwnProperty(key)) {
               continue
            }
            entries.push(key)
         }
         return entries
      },
      symlink: function (parent, newname, oldpath) {
         var node = MEMFS.createNode(parent, newname, 511 | 40960, 0);
         node.link = oldpath;
         return node
      },
      readlink: function (node) {
         if (!FS.isLink(node.mode)) {
            throw new FS.ErrnoError(28)
         }
         return node.link
      }
   },
   stream_ops: {
      read: function (stream, buffer, offset, length, position) {
         var contents = stream.node.contents;
         if (position >= stream.node.usedBytes) return 0;
         var size = Math.min(stream.node.usedBytes - position, length);
         if (size > 8 && contents.subarray) {
            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 (buffer.buffer === HEAP8.buffer) {
            canOwn = false
         }
         if (!length) return 0;
         var node = stream.node;
         node.timestamp = Date.now();
         if (buffer.subarray && (!node.contents || node.contents.subarray)) {
            if (canOwn) {
               node.contents = buffer.subarray(offset, offset + length);
               node.usedBytes = length;
               return length
            } else if (node.usedBytes === 0 && position === 0) {
               node.contents = buffer.slice(offset, offset + length);
               node.usedBytes = length;
               return length
            } else if (position + length <= node.usedBytes) {
               node.contents.set(buffer.subarray(offset, offset + length), position);
               return length
            }
         }
         MEMFS.expandFileStorage(node, position + length);
         if (node.contents.subarray && buffer.subarray) {
            node.contents.set(buffer.subarray(offset, offset + length), position)
         } else {
            for (var i = 0; i < length; i++) {
               node.contents[position + i] = buffer[offset + i]
            }
         }
         node.usedBytes = Math.max(node.usedBytes, position + length);
         return length
      },
      llseek: function (stream, offset, whence) {
         var position = offset;
         if (whence === 1) {
            position += stream.position
         } else if (whence === 2) {
            if (FS.isFile(stream.node.mode)) {
               position += stream.node.usedBytes
            }
         }
         if (position < 0) {
            throw new FS.ErrnoError(28)
         }
         return position
      },
      allocate: function (stream, offset, length) {
         MEMFS.expandFileStorage(stream.node, offset + length);
         stream.node.usedBytes = Math.max(stream.node.usedBytes, offset + length)
      },
      mmap: function (stream, address, length, position, prot, flags) {
         if (address !== 0) {
            throw new FS.ErrnoError(28)
         }
         if (!FS.isFile(stream.node.mode)) {
            throw new FS.ErrnoError(43)
         }
         var ptr;
         var allocated;
         var contents = stream.node.contents;
         if (!(flags & 2) && contents.buffer === buffer) {
            allocated = false;
            ptr = contents.byteOffset
         } else {
            if (position > 0 || position + length < contents.length) {
               if (contents.subarray) {
                  contents = contents.subarray(position, position + length)
               } else {
                  contents = Array.prototype.slice.call(contents, position, position + length)
               }
            }
            allocated = true;
            ptr = mmapAlloc(length);
            if (!ptr) {
               throw new FS.ErrnoError(48)
            }
            HEAP8.set(contents, ptr)
         }
         return {
            ptr: ptr,
            allocated: allocated
         }
      },
      msync: function (stream, buffer, offset, length, mmapFlags) {
         if (!FS.isFile(stream.node.mode)) {
            throw new FS.ErrnoError(43)
         }
         if (mmapFlags & 2) {
            return 0
         }
         var bytesWritten = MEMFS.stream_ops.write(stream, buffer, 0, length, offset, false);
         return 0
      }
   }
};

function asyncLoad(url, onload, onerror, noRunDep) {
   var dep = !noRunDep ? getUniqueRunDependency("al " + url) : "";
   readAsync(url, function (arrayBuffer) {
      assert(arrayBuffer, 'Loading data file "' + url + '" failed (no arrayBuffer).');
      onload(new Uint8Array(arrayBuffer));
      if (dep) removeRunDependency(dep)
   }, function (event) {
      if (onerror) {
         onerror()
      } else {
         throw 'Loading data file "' + url + '" failed.'
      }
   });
   if (dep) addRunDependency(dep)
}
var FS = {
   root: null,
   mounts: [],
   devices: {},
   streams: [],
   nextInode: 1,
   nameTable: null,
   currentPath: "/",
   initialized: false,
   ignorePermissions: true,
   ErrnoError: null,
   genericErrors: {},
   filesystems: null,
   syncFSRequests: 0,
   lookupPath: function (path, opts) {
      path = PATH_FS.resolve(FS.cwd(), path);
      opts = opts || {};
      if (!path) return {
         path: "",
         node: null
      };
      var defaults = {
         follow_mount: true,
         recurse_count: 0
      };
      for (var key in defaults) {
         if (opts[key] === undefined) {
            opts[key] = defaults[key]
         }
      }
      if (opts.recurse_count > 8) {
         throw new FS.ErrnoError(32)
      }
      var parts = PATH.normalizeArray(path.split("/").filter(function (p) {
         return !!p
      }), false);
      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) {
            break
         }
         current = FS.lookupNode(current, parts[i]);
         current_path = PATH.join2(current_path, parts[i]);
         if (FS.isMountpoint(current)) {
            if (!islast || islast && opts.follow_mount) {
               current = current.mounted.root
            }
         }
         if (!islast || opts.follow) {
            var count = 0;
            while (FS.isLink(current.mode)) {
               var link = FS.readlink(current_path);
               current_path = PATH_FS.resolve(PATH.dirname(current_path), link);
               var lookup = FS.lookupPath(current_path, {
                  recurse_count: opts.recurse_count
               });
               current = lookup.node;
               if (count++ > 40) {
                  throw new FS.ErrnoError(32)
               }
            }
         }
      }
      return {
         path: current_path,
         node: current
      }
   },
   getPath: function (node) {
      var path;
      while (true) {
         if (FS.isRoot(node)) {
            var mount = node.mount.mountpoint;
            if (!path) return mount;
            return mount[mount.length - 1] !== "/" ? mount + "/" + path : mount + path
         }
         path = path ? node.name + "/" + path : node.name;
         node = node.parent
      }
   },
   hashName: function (parentid, name) {
      var hash = 0;
      for (var i = 0; i < name.length; i++) {
         hash = (hash << 5) - hash + name.charCodeAt(i) | 0
      }
      return (parentid + hash >>> 0) % FS.nameTable.length
   },
   hashAddNode: function (node) {
      var hash = FS.hashName(node.parent.id, node.name);
      node.name_next = FS.nameTable[hash];
      FS.nameTable[hash] = node
   },
   hashRemoveNode: function (node) {
      var hash = FS.hashName(node.parent.id, node.name);
      if (FS.nameTable[hash] === node) {
         FS.nameTable[hash] = node.name_next
      } else {
         var current = FS.nameTable[hash];
         while (current) {
            if (current.name_next === node) {
               current.name_next = node.name_next;
               break
            }
            current = current.name_next
         }
      }
   },
   lookupNode: function (parent, name) {
      var errCode = FS.mayLookup(parent);
      if (errCode) {
         throw new FS.ErrnoError(errCode, parent)
      }
      var hash = FS.hashName(parent.id, name);
      for (var node = FS.nameTable[hash]; node; node = node.name_next) {
         var nodeName = node.name;
         if (node.parent.id === parent.id && nodeName === name) {
            return node
         }
      }
      return FS.lookup(parent, name)
   },
   createNode: function (parent, name, mode, rdev) {
      var node = new FS.FSNode(parent, name, mode, rdev);
      FS.hashAddNode(node);
      return node
   },
   destroyNode: function (node) {
      FS.hashRemoveNode(node)
   },
   isRoot: function (node) {
      return node === node.parent
   },
   isMountpoint: function (node) {
      return !!node.mounted
   },
   isFile: function (mode) {
      return (mode & 61440) === 32768
   },
   isDir: function (mode) {
      return (mode & 61440) === 16384
   },
   isLink: function (mode) {
      return (mode & 61440) === 40960
   },
   isChrdev: function (mode) {
      return (mode & 61440) === 8192
   },
   isBlkdev: function (mode) {
      return (mode & 61440) === 24576
   },
   isFIFO: function (mode) {
      return (mode & 61440) === 4096
   },
   isSocket: function (mode) {
      return (mode & 49152) === 49152
   },
   flagModes: {
      "r": 0,
      "r+": 2,
      "w": 577,
      "w+": 578,
      "a": 1089,
      "a+": 1090
   },
   modeStringToFlags: function (str) {
      var flags = FS.flagModes[str];
      if (typeof flags === "undefined") {
         throw new Error("Unknown file open mode: " + str)
      }
      return flags
   },
   flagsToPermissionString: function (flag) {
      var perms = ["r", "w", "rw"][flag & 3];
      if (flag & 512) {
         perms += "w"
      }
      return perms
   },
   nodePermissions: function (node, perms) {
      if (FS.ignorePermissions) {
         return 0
      }
      if (perms.includes("r") && !(node.mode & 292)) {
         return 2
      } else if (perms.includes("w") && !(node.mode & 146)) {
         return 2
      } else if (perms.includes("x") && !(node.mode & 73)) {
         return 2
      }
      return 0
   },
   mayLookup: function (dir) {
      var errCode = FS.nodePermissions(dir, "x");
      if (errCode) return errCode;
      if (!dir.node_ops.lookup) return 2;
      return 0
   },
   mayCreate: function (dir, name) {
      try {
         var node = FS.lookupNode(dir, name);
         return 20
      } catch (e) {}
      return FS.nodePermissions(dir, "wx")
   },
   mayDelete: function (dir, name, isdir) {
      var node;
      try {
         node = FS.lookupNode(dir, name)
      } catch (e) {
         return e.errno
      }
      var errCode = FS.nodePermissions(dir, "wx");
      if (errCode) {
         return errCode
      }
      if (isdir) {
         if (!FS.isDir(node.mode)) {
            return 54
         }
         if (FS.isRoot(node) || FS.getPath(node) === FS.cwd()) {
            return 10
         }
      } else {
         if (FS.isDir(node.mode)) {
            return 31
         }
      }
      return 0
   },
   mayOpen: function (node, flags) {
      if (!node) {
         return 44
      }
      if (FS.isLink(node.mode)) {
         return 32
      } else if (FS.isDir(node.mode)) {
         if (FS.flagsToPermissionString(flags) !== "r" || flags & 512) {
            return 31
         }
      }
      return FS.nodePermissions(node, FS.flagsToPermissionString(flags))
   },
   MAX_OPEN_FDS: 4096,
   nextfd: function (fd_start, fd_end) {
      fd_start = fd_start || 0;
      fd_end = fd_end || FS.MAX_OPEN_FDS;
      for (var fd = fd_start; fd <= fd_end; fd++) {
         if (!FS.streams[fd]) {
            return fd
         }
      }
      throw new FS.ErrnoError(33)
   },
   getStream: function (fd) {
      return FS.streams[fd]
   },
   createStream: function (stream, fd_start, fd_end) {
      if (!FS.FSStream) {
         FS.FSStream = function () {};
         FS.FSStream.prototype = {
            object: {
               get: function () {
                  return this.node
               },
               set: function (val) {
                  this.node = val
               }
            },
            isRead: {
               get: function () {
                  return (this.flags & 2097155) !== 1
               }
            },
            isWrite: {
               get: function () {
                  return (this.flags & 2097155) !== 0
               }
            },
            isAppend: {
               get: function () {
                  return this.flags & 1024
               }
            }
         }
      }
      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);
         stream.stream_ops = device.stream_ops;
         if (stream.stream_ops.open) {
            stream.stream_ops.open(stream)
         }
      },
      llseek: function () {
         throw new FS.ErrnoError(70)
      }
   },
   major: function (dev) {
      return dev >> 8
   },
   minor: function (dev) {
      return dev & 255
   },
   makedev: function (ma, mi) {
      return ma << 8 | mi
   },
   registerDevice: function (dev, ops) {
      FS.devices[dev] = {
         stream_ops: ops
      }
   },
   getDevice: function (dev) {
      return FS.devices[dev]
   },
   getMounts: function (mount) {
      var mounts = [];
      var check = [mount];
      while (check.length) {
         var m = check.pop();
         mounts.push(m);
         check.push.apply(check, m.mounts)
      }
      return mounts
   },
   syncfs: function (populate, callback) {
      if (typeof populate === "function") {
         callback = populate;
         populate = false
      }
      FS.syncFSRequests++;
      if (FS.syncFSRequests > 1) {
         err("warning: " + FS.syncFSRequests + " FS.syncfs operations in flight at once, probably just doing extra work")
      }
      var mounts = FS.getMounts(FS.root.mount);
      var completed = 0;

      function doCallback(errCode) {
         FS.syncFSRequests--;
         return callback(errCode)
      }

      function done(errCode) {
         if (errCode) {
            if (!done.errored) {
               done.errored = true;
               return doCallback(errCode)
            }
            return
         }
         if (++completed >= mounts.length) {
            doCallback(null)
         }
      }
      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(10)
      } else if (!root && !pseudo) {
         var lookup = FS.lookupPath(mountpoint, {
            follow_mount: false
         });
         mountpoint = lookup.path;
         node = lookup.node;
         if (FS.isMountpoint(node)) {
            throw new FS.ErrnoError(10)
         }
         if (!FS.isDir(node.mode)) {
            throw new FS.ErrnoError(54)
         }
      }
      var mount = {
         type: type,
         opts: opts,
         mountpoint: mountpoint,
         mounts: []
      };
      var mountRoot = type.mount(mount);
      mountRoot.mount = mount;
      mount.root = mountRoot;
      if (root) {
         FS.root = mountRoot
      } else if (node) {
         node.mounted = mount;
         if (node.mount) {
            node.mount.mounts.push(mount)
         }
      }
      return mountRoot
   },
   unmount: function (mountpoint) {
      var lookup = FS.lookupPath(mountpoint, {
         follow_mount: false
      });
      if (!FS.isMountpoint(lookup.node)) {
         throw new FS.ErrnoError(28)
      }
      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.includes(current.mount)) {
               FS.destroyNode(current)
            }
            current = next
         }
      });
      node.mounted = null;
      var idx = node.mount.mounts.indexOf(mount);
      node.mount.mounts.splice(idx, 1)
   },
   lookup: function (parent, name) {
      return parent.node_ops.lookup(parent, name)
   },
   mknod: function (path, mode, dev) {
      var lookup = FS.lookupPath(path, {
         parent: true
      });
      var parent = lookup.node;
      var name = PATH.basename(path);
      if (!name || name === "." || name === "..") {
         throw new FS.ErrnoError(28)
      }
      var errCode = FS.mayCreate(parent, name);
      if (errCode) {
         throw new FS.ErrnoError(errCode)
      }
      if (!parent.node_ops.mknod) {
         throw new FS.ErrnoError(63)
      }
      return parent.node_ops.mknod(parent, name, mode, dev)
   },
   create: function (path, mode) {
      mode = mode !== undefined ? mode : 438;
      mode &= 4095;
      mode |= 32768;
      return FS.mknod(path, mode, 0)
   },
   mkdir: function (path, mode) {
      mode = mode !== undefined ? mode : 511;
      mode &= 511 | 512;
      mode |= 16384;
      return FS.mknod(path, mode, 0)
   },
   mkdirTree: function (path, mode) {
      var dirs = path.split("/");
      var d = "";
      for (var i = 0; i < dirs.length; ++i) {
         if (!dirs[i]) continue;
         d += "/" + dirs[i];
         try {
            FS.mkdir(d, mode)
         } catch (e) {
            if (e.errno != 20) throw e
         }
      }
   },
   mkdev: function (path, mode, dev) {
      if (typeof dev === "undefined") {
         dev = mode;
         mode = 438
      }
      mode |= 8192;
      return FS.mknod(path, mode, dev)
   },
   symlink: function (oldpath, newpath) {
      if (!PATH_FS.resolve(oldpath)) {
         throw new FS.ErrnoError(44)
      }
      var lookup = FS.lookupPath(newpath, {
         parent: true
      });
      var parent = lookup.node;
      if (!parent) {
         throw new FS.ErrnoError(44)
      }
      var newname = PATH.basename(newpath);
      var errCode = FS.mayCreate(parent, newname);
      if (errCode) {
         throw new FS.ErrnoError(errCode)
      }
      if (!parent.node_ops.symlink) {
         throw new FS.ErrnoError(63)
      }
      return parent.node_ops.symlink(parent, newname, oldpath)
   },
   rename: function (old_path, new_path) {
      var old_dirname = PATH.dirname(old_path);
      var new_dirname = PATH.dirname(new_path);
      var old_name = PATH.basename(old_path);
      var new_name = PATH.basename(new_path);
      var lookup, old_dir, new_dir;
      lookup = FS.lookupPath(old_path, {
         parent: true
      });
      old_dir = lookup.node;
      lookup = FS.lookupPath(new_path, {
         parent: true
      });
      new_dir = lookup.node;
      if (!old_dir || !new_dir) throw new FS.ErrnoError(44);
      if (old_dir.mount !== new_dir.mount) {
         throw new FS.ErrnoError(75)
      }
      var old_node = FS.lookupNode(old_dir, old_name);
      var relative = PATH_FS.relative(old_path, new_dirname);
      if (relative.charAt(0) !== ".") {
         throw new FS.ErrnoError(28)
      }
      relative = PATH_FS.relative(new_path, old_dirname);
      if (relative.charAt(0) !== ".") {
         throw new FS.ErrnoError(55)
      }
      var new_node;
      try {
         new_node = FS.lookupNode(new_dir, new_name)
      } catch (e) {}
      if (old_node === new_node) {
         return
      }
      var isdir = FS.isDir(old_node.mode);
      var errCode = FS.mayDelete(old_dir, old_name, isdir);
      if (errCode) {
         throw new FS.ErrnoError(errCode)
      }
      errCode = new_node ? FS.mayDelete(new_dir, new_name, isdir) : FS.mayCreate(new_dir, new_name);
      if (errCode) {
         throw new FS.ErrnoError(errCode)
      }
      if (!old_dir.node_ops.rename) {
         throw new FS.ErrnoError(63)
      }
      if (FS.isMountpoint(old_node) || new_node && FS.isMountpoint(new_node)) {
         throw new FS.ErrnoError(10)
      }
      if (new_dir !== old_dir) {
         errCode = FS.nodePermissions(old_dir, "w");
         if (errCode) {
            throw new FS.ErrnoError(errCode)
         }
      }
      FS.hashRemoveNode(old_node);
      try {
         old_dir.node_ops.rename(old_node, new_dir, new_name)
      } catch (e) {
         throw e
      } finally {
         FS.hashAddNode(old_node)
      }
   },
   rmdir: function (path) {
      var lookup = FS.lookupPath(path, {
         parent: true
      });
      var parent = lookup.node;
      var name = PATH.basename(path);
      var node = FS.lookupNode(parent, name);
      var errCode = FS.mayDelete(parent, name, true);
      if (errCode) {
         throw new FS.ErrnoError(errCode)
      }
      if (!parent.node_ops.rmdir) {
         throw new FS.ErrnoError(63)
      }
      if (FS.isMountpoint(node)) {
         throw new FS.ErrnoError(10)
      }
      parent.node_ops.rmdir(parent, name);
      FS.destroyNode(node)
   },
   readdir: function (path) {
      var lookup = FS.lookupPath(path, {
         follow: true
      });
      var node = lookup.node;
      if (!node.node_ops.readdir) {
         throw new FS.ErrnoError(54)
      }
      return node.node_ops.readdir(node)
   },
   unlink: function (path) {
      var lookup = FS.lookupPath(path, {
         parent: true
      });
      var parent = lookup.node;
      if (!parent) {
         throw new FS.ErrnoError(44)
      }
      var name = PATH.basename(path);
      var node = FS.lookupNode(parent, name);
      var errCode = FS.mayDelete(parent, name, false);
      if (errCode) {
         throw new FS.ErrnoError(errCode)
      }
      if (!parent.node_ops.unlink) {
         throw new FS.ErrnoError(63)
      }
      if (FS.isMountpoint(node)) {
         throw new FS.ErrnoError(10)
      }
      parent.node_ops.unlink(parent, name);
      FS.destroyNode(node)
   },
   readlink: function (path) {
      var lookup = FS.lookupPath(path);
      var link = lookup.node;
      if (!link) {
         throw new FS.ErrnoError(44)
      }
      if (!link.node_ops.readlink) {
         throw new FS.ErrnoError(28)
      }
      return PATH_FS.resolve(FS.getPath(link.parent), link.node_ops.readlink(link))
   },
   stat: function (path, dontFollow) {
      var lookup = FS.lookupPath(path, {
         follow: !dontFollow
      });
      var node = lookup.node;
      if (!node) {
         throw new FS.ErrnoError(44)
      }
      if (!node.node_ops.getattr) {
         throw new FS.ErrnoError(63)
      }
      return node.node_ops.getattr(node)
   },
   lstat: function (path) {
      return FS.stat(path, true)
   },
   chmod: function (path, mode, dontFollow) {
      var node;
      if (typeof path === "string") {
         var lookup = FS.lookupPath(path, {
            follow: !dontFollow
         });
         node = lookup.node
      } else {
         node = path
      }
      if (!node.node_ops.setattr) {
         throw new FS.ErrnoError(63)
      }
      node.node_ops.setattr(node, {
         mode: mode & 4095 | node.mode & ~4095,
         timestamp: Date.now()
      })
   },
   lchmod: function (path, mode) {
      FS.chmod(path, mode, true)
   },
   fchmod: function (fd, mode) {
      var stream = FS.getStream(fd);
      if (!stream) {
         throw new FS.ErrnoError(8)
      }
      FS.chmod(stream.node, mode)
   },
   chown: function (path, uid, gid, dontFollow) {
      var node;
      if (typeof path === "string") {
         var lookup = FS.lookupPath(path, {
            follow: !dontFollow
         });
         node = lookup.node
      } else {
         node = path
      }
      if (!node.node_ops.setattr) {
         throw new FS.ErrnoError(63)
      }
      node.node_ops.setattr(node, {
         timestamp: Date.now()
      })
   },
   lchown: function (path, uid, gid) {
      FS.chown(path, uid, gid, true)
   },
   fchown: function (fd, uid, gid) {
      var stream = FS.getStream(fd);
      if (!stream) {
         throw new FS.ErrnoError(8)
      }
      FS.chown(stream.node, uid, gid)
   },
   truncate: function (path, len) {
      if (len < 0) {
         throw new FS.ErrnoError(28)
      }
      var node;
      if (typeof path === "string") {
         var lookup = FS.lookupPath(path, {
            follow: true
         });
         node = lookup.node
      } else {
         node = path
      }
      if (!node.node_ops.setattr) {
         throw new FS.ErrnoError(63)
      }
      if (FS.isDir(node.mode)) {
         throw new FS.ErrnoError(31)
      }
      if (!FS.isFile(node.mode)) {
         throw new FS.ErrnoError(28)
      }
      var errCode = FS.nodePermissions(node, "w");
      if (errCode) {
         throw new FS.ErrnoError(errCode)
      }
      node.node_ops.setattr(node, {
         size: len,
         timestamp: Date.now()
      })
   },
   ftruncate: function (fd, len) {
      var stream = FS.getStream(fd);
      if (!stream) {
         throw new FS.ErrnoError(8)
      }
      if ((stream.flags & 2097155) === 0) {
         throw new FS.ErrnoError(28)
      }
      FS.truncate(stream.node, len)
   },
   utime: function (path, atime, mtime) {
      var lookup = FS.lookupPath(path, {
         follow: true
      });
      var node = lookup.node;
      node.node_ops.setattr(node, {
         timestamp: Math.max(atime, mtime)
      })
   },
   open: function (path, flags, mode, fd_start, fd_end) {
      if (path === "") {
         throw new FS.ErrnoError(44)
      }
      flags = typeof flags === "string" ? FS.modeStringToFlags(flags) : flags;
      mode = typeof mode === "undefined" ? 438 : 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) {}
      }
      var created = false;
      if (flags & 64) {
         if (node) {
            if (flags & 128) {
               throw new FS.ErrnoError(20)
            }
         } else {
            node = FS.mknod(path, mode, 0);
            created = true
         }
      }
      if (!node) {
         throw new FS.ErrnoError(44)
      }
      if (FS.isChrdev(node.mode)) {
         flags &= ~512
      }
      if (flags & 65536 && !FS.isDir(node.mode)) {
         throw new FS.ErrnoError(54)
      }
      if (!created) {
         var errCode = FS.mayOpen(node, flags);
         if (errCode) {
            throw new FS.ErrnoError(errCode)
         }
      }
      if (flags & 512) {
         FS.truncate(node, 0)
      }
      flags &= ~(128 | 512 | 131072);
      var stream = FS.createStream({
         node: node,
         path: FS.getPath(node),
         id: node.id,
         flags: flags,
         mode: node.mode,
         seekable: true,
         position: 0,
         stream_ops: node.stream_ops,
         node_ops: node.node_ops,
         ungotten: [],
         error: false
      }, fd_start, fd_end);
      if (stream.stream_ops.open) {
         stream.stream_ops.open(stream)
      }
      if (Module["logReadFiles"] && !(flags & 1)) {
         if (!FS.readFiles) FS.readFiles = {};
         if (!(path in FS.readFiles)) {
            FS.readFiles[path] = 1
         }
      }
      return stream
   },
   close: function (stream) {
      if (FS.isClosed(stream)) {
         throw new FS.ErrnoError(8)
      }
      if (stream.getdents) stream.getdents = null;
      try {
         if (stream.stream_ops.close) {
            stream.stream_ops.close(stream)
         }
      } catch (e) {
         throw e
      } finally {
         FS.closeStream(stream.fd)
      }
      stream.fd = null
   },
   isClosed: function (stream) {
      return stream.fd === null
   },
   llseek: function (stream, offset, whence) {
      if (FS.isClosed(stream)) {
         throw new FS.ErrnoError(8)
      }
      if (!stream.seekable || !stream.stream_ops.llseek) {
         throw new FS.ErrnoError(70)
      }
      if (whence != 0 && whence != 1 && whence != 2) {
         throw new FS.ErrnoError(28)
      }
      stream.position = stream.stream_ops.llseek(stream, offset, whence);
      stream.ungotten = [];
      return stream.position
   },
   read: function (stream, buffer, offset, length, position) {
      if (length < 0 || position < 0) {
         throw new FS.ErrnoError(28)
      }
      if (FS.isClosed(stream)) {
         throw new FS.ErrnoError(8)
      }
      if ((stream.flags & 2097155) === 1) {
         throw new FS.ErrnoError(8)
      }
      if (FS.isDir(stream.node.mode)) {
         throw new FS.ErrnoError(31)
      }
      if (!stream.stream_ops.read) {
         throw new FS.ErrnoError(28)
      }
      var seeking = typeof position !== "undefined";
      if (!seeking) {
         position = stream.position
      } else if (!stream.seekable) {
         throw new FS.ErrnoError(70)
      }
      var bytesRead = stream.stream_ops.read(stream, buffer, offset, length, position);
      if (!seeking) stream.position += bytesRead;
      return bytesRead
   },
   write: function (stream, buffer, offset, length, position, canOwn) {
      if (length < 0 || position < 0) {
         throw new FS.ErrnoError(28)
      }
      if (FS.isClosed(stream)) {
         throw new FS.ErrnoError(8)
      }
      if ((stream.flags & 2097155) === 0) {
         throw new FS.ErrnoError(8)
      }
      if (FS.isDir(stream.node.mode)) {
         throw new FS.ErrnoError(31)
      }
      if (!stream.stream_ops.write) {
         throw new FS.ErrnoError(28)
      }
      if (stream.seekable && stream.flags & 1024) {
         FS.llseek(stream, 0, 2)
      }
      var seeking = typeof position !== "undefined";
      if (!seeking) {
         position = stream.position
      } else if (!stream.seekable) {
         throw new FS.ErrnoError(70)
      }
      var bytesWritten = stream.stream_ops.write(stream, buffer, offset, length, position, canOwn);
      if (!seeking) stream.position += bytesWritten;
      return bytesWritten
   },
   allocate: function (stream, offset, length) {
      if (FS.isClosed(stream)) {
         throw new FS.ErrnoError(8)
      }
      if (offset < 0 || length <= 0) {
         throw new FS.ErrnoError(28)
      }
      if ((stream.flags & 2097155) === 0) {
         throw new FS.ErrnoError(8)
      }
      if (!FS.isFile(stream.node.mode) && !FS.isDir(stream.node.mode)) {
         throw new FS.ErrnoError(43)
      }
      if (!stream.stream_ops.allocate) {
         throw new FS.ErrnoError(138)
      }
      stream.stream_ops.allocate(stream, offset, length)
   },
   mmap: function (stream, address, length, position, prot, flags) {
      if ((prot & 2) !== 0 && (flags & 2) === 0 && (stream.flags & 2097155) !== 2) {
         throw new FS.ErrnoError(2)
      }
      if ((stream.flags & 2097155) === 1) {
         throw new FS.ErrnoError(2)
      }
      if (!stream.stream_ops.mmap) {
         throw new FS.ErrnoError(43)
      }
      return stream.stream_ops.mmap(stream, address, length, position, prot, flags)
   },
   msync: function (stream, buffer, offset, length, mmapFlags) {
      if (!stream || !stream.stream_ops.msync) {
         return 0
      }
      return stream.stream_ops.msync(stream, buffer, offset, length, mmapFlags)
   },
   munmap: function (stream) {
      return 0
   },
   ioctl: function (stream, cmd, arg) {
      if (!stream.stream_ops.ioctl) {
         throw new FS.ErrnoError(59)
      }
      return stream.stream_ops.ioctl(stream, cmd, arg)
   },
   readFile: function (path, opts) {
      opts = opts || {};
      opts.flags = opts.flags || 0;
      opts.encoding = opts.encoding || "binary";
      if (opts.encoding !== "utf8" && opts.encoding !== "binary") {
         throw new Error('Invalid encoding type "' + opts.encoding + '"')
      }
      var ret;
      var stream = FS.open(path, opts.flags);
      var stat = FS.stat(path);
      var length = stat.size;
      var buf = new Uint8Array(length);
      FS.read(stream, buf, 0, length, 0);
      if (opts.encoding === "utf8") {
         ret = UTF8ArrayToString(buf, 0)
      } else if (opts.encoding === "binary") {
         ret = buf
      }
      FS.close(stream);
      return ret
   },
   writeFile: function (path, data, opts) {
      opts = opts || {};
      opts.flags = opts.flags || 577;
      var stream = FS.open(path, opts.flags, opts.mode);
      if (typeof data === "string") {
         var buf = new Uint8Array(lengthBytesUTF8(data) + 1);
         var actualNumBytes = stringToUTF8Array(data, buf, 0, buf.length);
         FS.write(stream, buf, 0, actualNumBytes, undefined, opts.canOwn)
      } else if (ArrayBuffer.isView(data)) {
         FS.write(stream, data, 0, data.byteLength, undefined, opts.canOwn)
      } else {
         throw new Error("Unsupported data type")
      }
      FS.close(stream)
   },
   cwd: function () {
      return FS.currentPath
   },
   chdir: function (path) {
      var lookup = FS.lookupPath(path, {
         follow: true
      });
      if (lookup.node === null) {
         throw new FS.ErrnoError(44)
      }
      if (!FS.isDir(lookup.node.mode)) {
         throw new FS.ErrnoError(54)
      }
      var errCode = FS.nodePermissions(lookup.node, "x");
      if (errCode) {
         throw new FS.ErrnoError(errCode)
      }
      FS.currentPath = lookup.path
   },
   createDefaultDirectories: function () {
      FS.mkdir("/tmp");
      FS.mkdir("/home");
      FS.mkdir("/home/web_user")
   },
   createDefaultDevices: function () {
      FS.mkdir("/dev");
      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));
      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));
      var random_device = getRandomDevice();
      FS.createDevice("/dev", "random", random_device);
      FS.createDevice("/dev", "urandom", random_device);
      FS.mkdir("/dev/shm");
      FS.mkdir("/dev/shm/tmp")
   },
   createSpecialDirectories: function () {
      FS.mkdir("/proc");
      var proc_self = FS.mkdir("/proc/self");
      FS.mkdir("/proc/self/fd");
      FS.mount({
         mount: function () {
            var node = FS.createNode(proc_self, "fd", 16384 | 511, 73);
            node.node_ops = {
               lookup: function (parent, name) {
                  var fd = +name;
                  var stream = FS.getStream(fd);
                  if (!stream) throw new FS.ErrnoError(8);
                  var ret = {
                     parent: null,
                     mount: {
                        mountpoint: "fake"
                     },
                     node_ops: {
                        readlink: function () {
                           return stream.path
                        }
                     }
                  };
                  ret.parent = ret;
                  return ret
               }
            };
            return node
         }
      }, {}, "/proc/self/fd")
   },
   createStandardStreams: function () {
      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")
      }
      var stdin = FS.open("/dev/stdin", 0);
      var stdout = FS.open("/dev/stdout", 1);
      var stderr = FS.open("/dev/stderr", 1)
   },
   ensureErrnoError: function () {
      if (FS.ErrnoError) return;
      FS.ErrnoError = function ErrnoError(errno, node) {
         this.node = node;
         this.setErrno = function (errno) {
            this.errno = errno
         };
         this.setErrno(errno);
         this.message = "FS error"
      };
      FS.ErrnoError.prototype = new Error;
      FS.ErrnoError.prototype.constructor = FS.ErrnoError;
      [44].forEach(function (code) {
         FS.genericErrors[code] = new FS.ErrnoError(code);
         FS.genericErrors[code].stack = "<generic error, no stack>"
      })
   },
   staticInit: function () {
      FS.ensureErrnoError();
      FS.nameTable = new Array(4096);
      FS.mount(MEMFS, {}, "/");
      FS.createDefaultDirectories();
      FS.createDefaultDevices();
      FS.createSpecialDirectories();
      FS.filesystems = {
         "MEMFS": MEMFS
      }
   },
   init: function (input, output, error) {
      FS.init.initialized = true;
      FS.ensureErrnoError();
      Module["stdin"] = input || Module["stdin"];
      Module["stdout"] = output || Module["stdout"];
      Module["stderr"] = error || Module["stderr"];
      FS.createStandardStreams()
   },
   quit: function () {
      FS.init.initialized = false;
      for (var i = 0; i < FS.streams.length; i++) {
         var stream = FS.streams[i];
         if (!stream) {
            continue
         }
         FS.close(stream)
      }
   },
   getMode: function (canRead, canWrite) {
      var mode = 0;
      if (canRead) mode |= 292 | 73;
      if (canWrite) mode |= 146;
      return mode
   },
   findObject: function (path, dontResolveLastLink) {
      var ret = FS.analyzePath(path, dontResolveLastLink);
      if (ret.exists) {
         return ret.object
      } else {
         return null
      }
   },
   analyzePath: function (path, dontResolveLastLink) {
      try {
         var lookup = FS.lookupPath(path, {
            follow: !dontResolveLastLink
         });
         path = lookup.path
      } catch (e) {}
      var ret = {
         isRoot: false,
         exists: false,
         error: 0,
         name: null,
         path: null,
         object: null,
         parentExists: false,
         parentPath: null,
         parentObject: null
      };
      try {
         var lookup = FS.lookupPath(path, {
            parent: true
         });
         ret.parentExists = true;
         ret.parentPath = lookup.path;
         ret.parentObject = lookup.node;
         ret.name = PATH.basename(path);
         lookup = FS.lookupPath(path, {
            follow: !dontResolveLastLink
         });
         ret.exists = true;
         ret.path = lookup.path;
         ret.object = lookup.node;
         ret.name = lookup.node.name;
         ret.isRoot = lookup.path === "/"
      } catch (e) {
         ret.error = e.errno
      }
      return ret
   },
   createPath: function (parent, path, canRead, canWrite) {
      parent = typeof parent === "string" ? parent : FS.getPath(parent);
      var parts = path.split("/").reverse();
      while (parts.length) {
         var part = parts.pop();
         if (!part) continue;
         var current = PATH.join2(parent, part);
         try {
            FS.mkdir(current)
         } catch (e) {}
         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
         }
         FS.chmod(node, mode | 146);
         var stream = FS.open(node, 577);
         FS.write(stream, data, 0, data.length, 0, canOwn);
         FS.close(stream);
         FS.chmod(node, mode)
      }
      return node
   },
   createDevice: function (parent, name, input, output) {
      var path = PATH.join2(typeof parent === "string" ? parent : FS.getPath(parent), name);
      var mode = FS.getMode(!!input, !!output);
      if (!FS.createDevice.major) FS.createDevice.major = 64;
      var dev = FS.makedev(FS.createDevice.major++, 0);
      FS.registerDevice(dev, {
         open: function (stream) {
            stream.seekable = false
         },
         close: function (stream) {
            if (output && output.buffer && output.buffer.length) {
               output(10)
            }
         },
         read: function (stream, buffer, offset, length, pos) {
            var bytesRead = 0;
            for (var i = 0; i < length; i++) {
               var result;
               try {
                  result = input()
               } catch (e) {
                  throw new FS.ErrnoError(29)
               }
               if (result === undefined && bytesRead === 0) {
                  throw new FS.ErrnoError(6)
               }
               if (result === null || result === undefined) break;
               bytesRead++;
               buffer[offset + i] = result
            }
            if (bytesRead) {
               stream.node.timestamp = Date.now()
            }
            return bytesRead
         },
         write: function (stream, buffer, offset, length, pos) {
            for (var i = 0; i < length; i++) {
               try {
                  output(buffer[offset + i])
               } catch (e) {
                  throw new FS.ErrnoError(29)
               }
            }
            if (length) {
               stream.node.timestamp = Date.now()
            }
            return i
         }
      });
      return FS.mkdev(path, mode, dev)
   },
   forceLoadFile: function (obj) {
      if (obj.isDevice || obj.isFolder || obj.link || obj.contents) return true;
      if (typeof XMLHttpRequest !== "undefined") {
         throw new Error("Lazy loading should have been performed (contents set) in createLazyFile, but it was not. Lazy loading only works in web workers. Use --embed-file or --preload-file in emcc on the main thread.")
      } else if (read_) {
         try {
            obj.contents = intArrayFromString(read_(obj.url), true);
            obj.usedBytes = obj.contents.length
         } catch (e) {
            throw new FS.ErrnoError(29)
         }
      } else {
         throw new Error("Cannot load without read() or XMLHttpRequest.")
      }
   },
   createLazyFile: function (parent, name, url, canRead, canWrite) {
      function LazyUint8Array() {
         this.lengthKnown = false;
         this.chunks = []
      }
      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() {
         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;
         if (!hasByteServing) chunkSize = datalength;
         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!");
            var xhr = new XMLHttpRequest;
            xhr.open("GET", url, false);
            if (datalength !== chunkSize) xhr.setRequestHeader("Range", "bytes=" + from + "-" + to);
            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;
            end = Math.min(end, datalength - 1);
            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) {
            chunkSize = datalength = 1;
            datalength = this.getter(0).length;
            chunkSize = datalength;
            out("LazyFiles on gzip forces download of the whole file when length is accessed")
         }
         this._length = datalength;
         this._chunkSize = chunkSize;
         this.lengthKnown = true
      };
      if (typeof XMLHttpRequest !== "undefined") {
         if (!ENVIRONMENT_IS_WORKER) throw "Cannot do synchronous binary XHRs outside webworkers in modern browsers. Use --embed-file or --preload-file in emcc";
         var lazyArray = new LazyUint8Array;
         Object.defineProperties(lazyArray, {
            length: {
               get: 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);
      if (properties.contents) {
         node.contents = properties.contents
      } else if (properties.url) {
         node.contents = null;
         node.url = properties.url
      }
      Object.defineProperties(node, {
         usedBytes: {
            get: function () {
               return this.contents.length
            }
         }
      });
      var stream_ops = {};
      var keys = Object.keys(node.stream_ops);
      keys.forEach(function (key) {
         var fn = node.stream_ops[key];
         stream_ops[key] = function forceLoadLazyFile() {
            FS.forceLoadFile(node);
            return fn.apply(null, arguments)
         }
      });
      stream_ops.read = function stream_ops_read(stream, buffer, offset, length, position) {
         FS.forceLoadFile(node);
         var contents = stream.node.contents;
         if (position >= contents.length) return 0;
         var size = Math.min(contents.length - position, length);
         if (contents.slice) {
            for (var i = 0; i < size; i++) {
               buffer[offset + i] = contents[position + i]
            }
         } else {
            for (var i = 0; i < size; i++) {
               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();
      var fullname = name ? PATH_FS.resolve(PATH.join2(parent, name)) : parent;
      var dep = getUniqueRunDependency("cp " + 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") {
         asyncLoad(url, function (byteArray) {
            processData(byteArray)
         }, onerror)
      } else {
         processData(url)
      }
   },
   indexedDB: function () {
      return window.indexedDB || window.mozIndexedDB || window.webkitIndexedDB || window.msIndexedDB
   },
   DB_NAME: function () {
      return "EM_FS_" + window.location.pathname
   },
   DB_VERSION: 20,
   DB_STORE_NAME: "FILE_DATA",
   saveFilesToDB: function (paths, onload, onerror) {
      onload = onload || function () {};
      onerror = onerror || function () {};
      var indexedDB = FS.indexedDB();
      try {
         var openRequest = indexedDB.open(FS.DB_NAME(), FS.DB_VERSION)
      } catch (e) {
         return onerror(e)
      }
      openRequest.onupgradeneeded = function openRequest_onupgradeneeded() {
         out("creating db");
         var db = openRequest.result;
         db.createObjectStore(FS.DB_STORE_NAME)
      };
      openRequest.onsuccess = function openRequest_onsuccess() {
         var db = openRequest.result;
         var transaction = db.transaction([FS.DB_STORE_NAME], "readwrite");
         var files = transaction.objectStore(FS.DB_STORE_NAME);
         var ok = 0,
            fail = 0,
            total = paths.length;

         function finish() {
            if (fail == 0) onload();
            else onerror()
         }
         paths.forEach(function (path) {
            var putRequest = files.put(FS.analyzePath(path).object.contents, path);
            putRequest.onsuccess = function putRequest_onsuccess() {
               ok++;
               if (ok + fail == total) finish()
            };
            putRequest.onerror = function putRequest_onerror() {
               fail++;
               if (ok + fail == total) finish()
            }
         });
         transaction.onerror = onerror
      };
      openRequest.onerror = onerror
   },
   loadFilesFromDB: function (paths, onload, onerror) {
      onload = onload || function () {};
      onerror = onerror || function () {};
      var indexedDB = FS.indexedDB();
      try {
         var openRequest = indexedDB.open(FS.DB_NAME(), FS.DB_VERSION)
      } catch (e) {
         return onerror(e)
      }
      openRequest.onupgradeneeded = onerror;
      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 SOCKFS = {
   mount: function (mount) {
      Module["websocket"] = Module["websocket"] && "object" === typeof Module["websocket"] ? Module["websocket"] : {};
      Module["websocket"]._callbacks = {};
      Module["websocket"]["on"] = function (event, callback) {
         if ("function" === typeof callback) {
            this._callbacks[event] = callback
         }
         return this
      };
      Module["websocket"].emit = function (event, param) {
         if ("function" === typeof this._callbacks[event]) {
            this._callbacks[event].call(this, param)
         }
      };
      return FS.createNode(null, "/", 16384 | 511, 0)
   },
   createSocket: function (family, type, protocol) {
      type &= ~526336;
      var streaming = type == 1;
      if (protocol) {
         assert(streaming == (protocol == 6))
      }
      var sock = {
         family: family,
         type: type,
         protocol: protocol,
         server: null,
         error: null,
         peers: {},
         pending: [],
         recv_queue: [],
         sock_ops: SOCKFS.websocket_sock_ops
      };
      var name = SOCKFS.nextname();
      var node = FS.createNode(SOCKFS.root, name, 49152, 0);
      node.sock = sock;
      var stream = FS.createStream({
         path: name,
         node: node,
         flags: 2,
         seekable: false,
         stream_ops: SOCKFS.stream_ops
      });
      sock.stream = stream;
      return sock
   },
   getSocket: function (fd) {
      var stream = FS.getStream(fd);
      if (!stream || !FS.isSocket(stream.node.mode)) {
         return null
      }
      return stream.node.sock
   },
   stream_ops: {
      poll: function (stream) {
         var sock = stream.node.sock;
         return sock.sock_ops.poll(sock)
      },
      ioctl: function (stream, request, varargs) {
         var sock = stream.node.sock;
         return sock.sock_ops.ioctl(sock, request, varargs)
      },
      read: function (stream, buffer, offset, length, position) {
         var sock = stream.node.sock;
         var msg = sock.sock_ops.recvmsg(sock, length);
         if (!msg) {
            return 0
         }
         buffer.set(msg.buffer, offset);
         return msg.buffer.length
      },
      write: function (stream, buffer, offset, length, position) {
         var sock = stream.node.sock;
         return sock.sock_ops.sendmsg(sock, buffer, offset, length)
      },
      close: function (stream) {
         var sock = stream.node.sock;
         sock.sock_ops.close(sock)
      }
   },
   nextname: function () {
      if (!SOCKFS.nextname.current) {
         SOCKFS.nextname.current = 0
      }
      return "socket[" + SOCKFS.nextname.current++ + "]"
   },
   websocket_sock_ops: {
      createPeer: function (sock, addr, port) {
         var ws;
         if (typeof addr === "object") {
            ws = addr;
            addr = null;
            port = null
         }
         if (ws) {
            if (ws._socket) {
               addr = ws._socket.remoteAddress;
               port = ws._socket.remotePort
            } else {
               var result = /ws[s]?:\/\/([^:]+):(\d+)/.exec(ws.url);
               if (!result) {
                  throw new Error("WebSocket URL must be in the format ws(s)://address:port")
               }
               addr = result[1];
               port = parseInt(result[2], 10)
            }
         } else {
            try {
               var runtimeConfig = Module["websocket"] && "object" === typeof Module["websocket"];
               var url = "ws:#".replace("#", "//");
               if (runtimeConfig) {
                  if ("string" === typeof Module["websocket"]["url"]) {
                     url = Module["websocket"]["url"]
                  }
               }
               if (url === "ws://" || url === "wss://") {
                  var parts = addr.split("/");
                  url = url + parts[0] + ":" + port + "/" + parts.slice(1).join("/")
               }
               var subProtocols = "binary";
               if (runtimeConfig) {
                  if ("string" === typeof Module["websocket"]["subprotocol"]) {
                     subProtocols = Module["websocket"]["subprotocol"]
                  }
               }
               var opts = undefined;
               if (subProtocols !== "null") {
                  subProtocols = subProtocols.replace(/^ +| +$/g, "").split(/ *, */);
                  opts = ENVIRONMENT_IS_NODE ? {
                     "protocol": subProtocols.toString()
                  } : subProtocols
               }
               if (runtimeConfig && null === Module["websocket"]["subprotocol"]) {
                  subProtocols = "null";
                  opts = undefined
               }
               var WebSocketConstructor;
               if (ENVIRONMENT_IS_NODE) {
                  WebSocketConstructor = require("ws")
               } else {
                  WebSocketConstructor = WebSocket
               }
               ws = new WebSocketConstructor(url, opts);
               ws.binaryType = "arraybuffer"
            } catch (e) {
               throw new FS.ErrnoError(23)
            }
         }
         var peer = {
            addr: addr,
            port: port,
            socket: ws,
            dgram_send_queue: []
         };
         SOCKFS.websocket_sock_ops.addPeer(sock, peer);
         SOCKFS.websocket_sock_ops.handlePeerEvents(sock, peer);
         if (sock.type === 2 && typeof sock.sport !== "undefined") {
            peer.dgram_send_queue.push(new Uint8Array([255, 255, 255, 255, "p".charCodeAt(0), "o".charCodeAt(0), "r".charCodeAt(0), "t".charCodeAt(0), (sock.sport & 65280) >> 8, sock.sport & 255]))
         }
         return peer
      },
      getPeer: function (sock, addr, port) {
         return sock.peers[addr + ":" + port]
      },
      addPeer: function (sock, peer) {
         sock.peers[peer.addr + ":" + peer.port] = peer
      },
      removePeer: function (sock, peer) {
         delete sock.peers[peer.addr + ":" + peer.port]
      },
      handlePeerEvents: function (sock, peer) {
         var first = true;
         var handleOpen = function () {
            Module["websocket"].emit("open", sock.stream.fd);
            try {
               var queued = peer.dgram_send_queue.shift();
               while (queued) {
                  peer.socket.send(queued);
                  queued = peer.dgram_send_queue.shift()
               }
            } catch (e) {
               peer.socket.close()
            }
         };

         function handleMessage(data) {
            if (typeof data === "string") {
               var encoder = new TextEncoder;
               data = encoder.encode(data)
            } else {
               assert(data.byteLength !== undefined);
               if (data.byteLength == 0) {
                  return
               } else {
                  data = new Uint8Array(data)
               }
            }
            var wasfirst = first;
            first = false;
            if (wasfirst && data.length === 10 && data[0] === 255 && data[1] === 255 && data[2] === 255 && data[3] === 255 && data[4] === "p".charCodeAt(0) && data[5] === "o".charCodeAt(0) && data[6] === "r".charCodeAt(0) && data[7] === "t".charCodeAt(0)) {
               var newport = data[8] << 8 | data[9];
               SOCKFS.websocket_sock_ops.removePeer(sock, peer);
               peer.port = newport;
               SOCKFS.websocket_sock_ops.addPeer(sock, peer);
               return
            }
            sock.recv_queue.push({
               addr: peer.addr,
               port: peer.port,
               data: data
            });
            Module["websocket"].emit("message", sock.stream.fd)
         }
         if (ENVIRONMENT_IS_NODE) {
            peer.socket.on("open", handleOpen);
            peer.socket.on("message", function (data, flags) {
               if (!flags.binary) {
                  return
               }
               handleMessage(new Uint8Array(data).buffer)
            });
            peer.socket.on("close", function () {
               Module["websocket"].emit("close", sock.stream.fd)
            });
            peer.socket.on("error", function (error) {
               sock.error = 14;
               Module["websocket"].emit("error", [sock.stream.fd, sock.error, "ECONNREFUSED: Connection refused"])
            })
         } else {
            peer.socket.onopen = handleOpen;
            peer.socket.onclose = function () {
               Module["websocket"].emit("close", sock.stream.fd)
            };
            peer.socket.onmessage = function peer_socket_onmessage(event) {
               handleMessage(event.data)
            };
            peer.socket.onerror = function (error) {
               sock.error = 14;
               Module["websocket"].emit("error", [sock.stream.fd, sock.error, "ECONNREFUSED: Connection refused"])
            }
         }
      },
      poll: function (sock) {
         if (sock.type === 1 && sock.server) {
            return sock.pending.length ? 64 | 1 : 0
         }
         var mask = 0;
         var dest = sock.type === 1 ? SOCKFS.websocket_sock_ops.getPeer(sock, sock.daddr, sock.dport) : null;
         if (sock.recv_queue.length || !dest || dest && dest.socket.readyState === dest.socket.CLOSING || dest && dest.socket.readyState === dest.socket.CLOSED) {
            mask |= 64 | 1
         }
         if (!dest || dest && dest.socket.readyState === dest.socket.OPEN) {
            mask |= 4
         }
         if (dest && dest.socket.readyState === dest.socket.CLOSING || dest && dest.socket.readyState === dest.socket.CLOSED) {
            mask |= 16
         }
         return mask
      },
      ioctl: function (sock, request, arg) {
         switch (request) {
            case 21531:
               var bytes = 0;
               if (sock.recv_queue.length) {
                  bytes = sock.recv_queue[0].data.length
               }
               HEAP32[arg >> 2] = bytes;
               return 0;
            default:
               return 28
         }
      },
      close: function (sock) {
         if (sock.server) {
            try {
               sock.server.close()
            } catch (e) {}
            sock.server = null
         }
         var peers = Object.keys(sock.peers);
         for (var i = 0; i < peers.length; i++) {
            var peer = sock.peers[peers[i]];
            try {
               peer.socket.close()
            } catch (e) {}
            SOCKFS.websocket_sock_ops.removePeer(sock, peer)
         }
         return 0
      },
      bind: function (sock, addr, port) {
         if (typeof sock.saddr !== "undefined" || typeof sock.sport !== "undefined") {
            throw new FS.ErrnoError(28)
         }
         sock.saddr = addr;
         sock.sport = port;
         if (sock.type === 2) {
            if (sock.server) {
               sock.server.close();
               sock.server = null
            }
            try {
               sock.sock_ops.listen(sock, 0)
            } catch (e) {
               if (!(e instanceof FS.ErrnoError)) throw e;
               if (e.errno !== 138) throw e
            }
         }
      },
      connect: function (sock, addr, port) {
         if (sock.server) {
            throw new FS.ErrnoError(138)
         }
         if (typeof sock.daddr !== "undefined" && typeof sock.dport !== "undefined") {
            var dest = SOCKFS.websocket_sock_ops.getPeer(sock, sock.daddr, sock.dport);
            if (dest) {
               if (dest.socket.readyState === dest.socket.CONNECTING) {
                  throw new FS.ErrnoError(7)
               } else {
                  throw new FS.ErrnoError(30)
               }
            }
         }
         var peer = SOCKFS.websocket_sock_ops.createPeer(sock, addr, port);
         sock.daddr = peer.addr;
         sock.dport = peer.port;
         throw new FS.ErrnoError(26)
      },
      listen: function (sock, backlog) {
         if (!ENVIRONMENT_IS_NODE) {
            throw new FS.ErrnoError(138)
         }
         if (sock.server) {
            throw new FS.ErrnoError(28)
         }
         var WebSocketServer = require("ws").Server;
         var host = sock.saddr;
         sock.server = new WebSocketServer({
            host: host,
            port: sock.sport
         });
         Module["websocket"].emit("listen", sock.stream.fd);
         sock.server.on("connection", function (ws) {
            if (sock.type === 1) {
               var newsock = SOCKFS.createSocket(sock.family, sock.type, sock.protocol);
               var peer = SOCKFS.websocket_sock_ops.createPeer(newsock, ws);
               newsock.daddr = peer.addr;
               newsock.dport = peer.port;
               sock.pending.push(newsock);
               Module["websocket"].emit("connection", newsock.stream.fd)
            } else {
               SOCKFS.websocket_sock_ops.createPeer(sock, ws);
               Module["websocket"].emit("connection", sock.stream.fd)
            }
         });
         sock.server.on("closed", function () {
            Module["websocket"].emit("close", sock.stream.fd);
            sock.server = null
         });
         sock.server.on("error", function (error) {
            sock.error = 23;
            Module["websocket"].emit("error", [sock.stream.fd, sock.error, "EHOSTUNREACH: Host is unreachable"])
         })
      },
      accept: function (listensock) {
         if (!listensock.server) {
            throw new FS.ErrnoError(28)
         }
         var newsock = listensock.pending.shift();
         newsock.stream.flags = listensock.stream.flags;
         return newsock
      },
      getname: function (sock, peer) {
         var addr, port;
         if (peer) {
            if (sock.daddr === undefined || sock.dport === undefined) {
               throw new FS.ErrnoError(53)
            }
            addr = sock.daddr;
            port = sock.dport
         } else {
            addr = sock.saddr || 0;
            port = sock.sport || 0
         }
         return {
            addr: addr,
            port: port
         }
      },
      sendmsg: function (sock, buffer, offset, length, addr, port) {
         if (sock.type === 2) {
            if (addr === undefined || port === undefined) {
               addr = sock.daddr;
               port = sock.dport
            }
            if (addr === undefined || port === undefined) {
               throw new FS.ErrnoError(17)
            }
         } else {
            addr = sock.daddr;
            port = sock.dport
         }
         var dest = SOCKFS.websocket_sock_ops.getPeer(sock, addr, port);
         if (sock.type === 1) {
            if (!dest || dest.socket.readyState === dest.socket.CLOSING || dest.socket.readyState === dest.socket.CLOSED) {
               throw new FS.ErrnoError(53)
            } else if (dest.socket.readyState === dest.socket.CONNECTING) {
               throw new FS.ErrnoError(6)
            }
         }
         if (ArrayBuffer.isView(buffer)) {
            offset += buffer.byteOffset;
            buffer = buffer.buffer
         }
         var data;
         data = buffer.slice(offset, offset + length);
         if (sock.type === 2) {
            if (!dest || dest.socket.readyState !== dest.socket.OPEN) {
               if (!dest || dest.socket.readyState === dest.socket.CLOSING || dest.socket.readyState === dest.socket.CLOSED) {
                  dest = SOCKFS.websocket_sock_ops.createPeer(sock, addr, port)
               }
               dest.dgram_send_queue.push(data);
               return length
            }
         }
         try {
            dest.socket.send(data);
            return length
         } catch (e) {
            throw new FS.ErrnoError(28)
         }
      },
      recvmsg: function (sock, length) {
         if (sock.type === 1 && sock.server) {
            throw new FS.ErrnoError(53)
         }
         var queued = sock.recv_queue.shift();
         if (!queued) {
            if (sock.type === 1) {
               var dest = SOCKFS.websocket_sock_ops.getPeer(sock, sock.daddr, sock.dport);
               if (!dest) {
                  throw new FS.ErrnoError(53)
               } else if (dest.socket.readyState === dest.socket.CLOSING || dest.socket.readyState === dest.socket.CLOSED) {
                  return null
               } else {
                  throw new FS.ErrnoError(6)
               }
            } else {
               throw new FS.ErrnoError(6)
            }
         }
         var queuedLength = queued.data.byteLength || queued.data.length;
         var queuedOffset = queued.data.byteOffset || 0;
         var queuedBuffer = queued.data.buffer || queued.data;
         var bytesRead = Math.min(length, queuedLength);
         var res = {
            buffer: new Uint8Array(queuedBuffer, queuedOffset, bytesRead),
            addr: queued.addr,
            port: queued.port
         };
         if (sock.type === 1 && bytesRead < queuedLength) {
            var bytesRemaining = queuedLength - bytesRead;
            queued.data = new Uint8Array(queuedBuffer, queuedOffset + bytesRead, bytesRemaining);
            sock.recv_queue.unshift(queued)
         }
         return res
      }
   }
};

function getSocketFromFD(fd) {
   var socket = SOCKFS.getSocket(fd);
   if (!socket) throw new FS.ErrnoError(8);
   return socket
}

function inetPton4(str) {
   var b = str.split(".");
   for (var i = 0; i < 4; i++) {
      var tmp = Number(b[i]);
      if (isNaN(tmp)) return null;
      b[i] = tmp
   }
   return (b[0] | b[1] << 8 | b[2] << 16 | b[3] << 24) >>> 0
}

function jstoi_q(str) {
   return parseInt(str)
}

function inetPton6(str) {
   var words;
   var w, offset, z;
   var valid6regx = /^((?=.*::)(?!.*::.+::)(::)?([\dA-F]{1,4}:(:|\b)|){5}|([\dA-F]{1,4}:){6})((([\dA-F]{1,4}((?!\3)::|:\b|$))|(?!\2\3)){2}|(((2[0-4]|1\d|[1-9])?\d|25[0-5])\.?\b){4})$/i;
   var parts = [];
   if (!valid6regx.test(str)) {
      return null
   }
   if (str === "::") {
      return [0, 0, 0, 0, 0, 0, 0, 0]
   }
   if (str.startsWith("::")) {
      str = str.replace("::", "Z:")
   } else {
      str = str.replace("::", ":Z:")
   }
   if (str.indexOf(".") > 0) {
      str = str.replace(new RegExp("[.]", "g"), ":");
      words = str.split(":");
      words[words.length - 4] = jstoi_q(words[words.length - 4]) + jstoi_q(words[words.length - 3]) * 256;
      words[words.length - 3] = jstoi_q(words[words.length - 2]) + jstoi_q(words[words.length - 1]) * 256;
      words = words.slice(0, words.length - 2)
   } else {
      words = str.split(":")
   }
   offset = 0;
   z = 0;
   for (w = 0; w < words.length; w++) {
      if (typeof words[w] === "string") {
         if (words[w] === "Z") {
            for (z = 0; z < 8 - words.length + 1; z++) {
               parts[w + z] = 0
            }
            offset = z - 1
         } else {
            parts[w + offset] = _htons(parseInt(words[w], 16))
         }
      } else {
         parts[w + offset] = words[w]
      }
   }
   return [parts[1] << 16 | parts[0], parts[3] << 16 | parts[2], parts[5] << 16 | parts[4], parts[7] << 16 | parts[6]]
}

function writeSockaddr(sa, family, addr, port, addrlen) {
   switch (family) {
      case 2:
         addr = inetPton4(addr);
         zeroMemory(sa, 16);
         if (addrlen) {
            HEAP32[addrlen >> 2] = 16
         }
         HEAP16[sa >> 1] = family;
         HEAP32[sa + 4 >> 2] = addr;
         HEAP16[sa + 2 >> 1] = _htons(port);
         break;
      case 10:
         addr = inetPton6(addr);
         zeroMemory(sa, 28);
         if (addrlen) {
            HEAP32[addrlen >> 2] = 28
         }
         HEAP32[sa >> 2] = family;
         HEAP32[sa + 8 >> 2] = addr[0];
         HEAP32[sa + 12 >> 2] = addr[1];
         HEAP32[sa + 16 >> 2] = addr[2];
         HEAP32[sa + 20 >> 2] = addr[3];
         HEAP16[sa + 2 >> 1] = _htons(port);
         break;
      default:
         return 5
   }
   return 0
}
var DNS = {
   address_map: {
      id: 1,
      addrs: {},
      names: {}
   },
   lookup_name: function (name) {
      var res = inetPton4(name);
      if (res !== null) {
         return name
      }
      res = inetPton6(name);
      if (res !== null) {
         return name
      }
      var addr;
      if (DNS.address_map.addrs[name]) {
         addr = DNS.address_map.addrs[name]
      } else {
         var id = DNS.address_map.id++;
         assert(id < 65535, "exceeded max address mappings of 65535");
         addr = "172.29." + (id & 255) + "." + (id & 65280);
         DNS.address_map.names[addr] = name;
         DNS.address_map.addrs[name] = addr
      }
      return addr
   },
   lookup_addr: function (addr) {
      if (DNS.address_map.names[addr]) {
         return DNS.address_map.names[addr]
      }
      return null
   }
};
var SYSCALLS = {
   mappings: {},
   DEFAULT_POLLMASK: 5,
   calculateAt: function (dirfd, path, allowEmpty) {
      if (path[0] === "/") {
         return path
      }
      var dir;
      if (dirfd === -100) {
         dir = FS.cwd()
      } else {
         var dirstream = FS.getStream(dirfd);
         if (!dirstream) throw new FS.ErrnoError(8);
         dir = dirstream.path
      }
      if (path.length == 0) {
         if (!allowEmpty) {
            throw new FS.ErrnoError(44)
         }
         return dir
      }
      return PATH.join2(dir, path)
   },
   doStat: function (func, path, buf) {
      try {
         var stat = func(path)
      } catch (e) {
         if (e && e.node && PATH.normalize(path) !== PATH.normalize(FS.getPath(e.node))) {
            return -54
         }
         throw e
      }
      HEAP32[buf >> 2] = stat.dev;
      HEAP32[buf + 4 >> 2] = 0;
      HEAP32[buf + 8 >> 2] = stat.ino;
      HEAP32[buf + 12 >> 2] = stat.mode;
      HEAP32[buf + 16 >> 2] = stat.nlink;
      HEAP32[buf + 20 >> 2] = stat.uid;
      HEAP32[buf + 24 >> 2] = stat.gid;
      HEAP32[buf + 28 >> 2] = stat.rdev;
      HEAP32[buf + 32 >> 2] = 0;
      tempI64 = [stat.size >>> 0, (tempDouble = stat.size, +Math.abs(tempDouble) >= 1 ? tempDouble > 0 ? (Math.min(+Math.floor(tempDouble / 4294967296), 4294967295) | 0) >>> 0 : ~~+Math.ceil((tempDouble - +(~~tempDouble >>> 0)) / 4294967296) >>> 0 : 0)], HEAP32[buf + 40 >> 2] = tempI64[0], HEAP32[buf + 44 >> 2] = tempI64[1];
      HEAP32[buf + 48 >> 2] = 4096;
      HEAP32[buf + 52 >> 2] = stat.blocks;
      HEAP32[buf + 56 >> 2] = stat.atime.getTime() / 1e3 | 0;
      HEAP32[buf + 60 >> 2] = 0;
      HEAP32[buf + 64 >> 2] = stat.mtime.getTime() / 1e3 | 0;
      HEAP32[buf + 68 >> 2] = 0;
      HEAP32[buf + 72 >> 2] = stat.ctime.getTime() / 1e3 | 0;
      HEAP32[buf + 76 >> 2] = 0;
      tempI64 = [stat.ino >>> 0, (tempDouble = stat.ino, +Math.abs(tempDouble) >= 1 ? tempDouble > 0 ? (Math.min(+Math.floor(tempDouble / 4294967296), 4294967295) | 0) >>> 0 : ~~+Math.ceil((tempDouble - +(~~tempDouble >>> 0)) / 4294967296) >>> 0 : 0)], HEAP32[buf + 80 >> 2] = tempI64[0], HEAP32[buf + 84 >> 2] = tempI64[1];
      return 0
   },
   doMsync: function (addr, stream, len, flags, offset) {
      var buffer = HEAPU8.slice(addr, addr + len);
      FS.msync(stream, buffer, offset, len, flags)
   },
   doMkdir: function (path, mode) {
      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) {
      switch (mode & 61440) {
         case 32768:
         case 8192:
         case 24576:
         case 4096:
         case 49152:
            break;
         default:
            return -28
      }
      FS.mknod(path, mode, dev);
      return 0
   },
   doReadlink: function (path, buf, bufsize) {
      if (bufsize <= 0) return -28;
      var ret = FS.readlink(path);
      var len = Math.min(bufsize, lengthBytesUTF8(ret));
      var endChar = HEAP8[buf + len];
      stringToUTF8(ret, buf, bufsize + 1);
      HEAP8[buf + len] = endChar;
      return len
   },
   doAccess: function (path, amode) {
      if (amode & ~7) {
         return -28
      }
      var lookup = FS.lookupPath(path, {
         follow: true
      });
      var node = lookup.node;
      if (!node) {
         return -44
      }
      var perms = "";
      if (amode & 4) perms += "r";
      if (amode & 2) perms += "w";
      if (amode & 1) perms += "x";
      if (perms && FS.nodePermissions(node, perms)) {
         return -2
      }
      return 0
   },
   doDup: function (path, flags, suggestFD) {
      var suggest = FS.getStream(suggestFD);
      if (suggest) FS.close(suggest);
      return FS.open(path, flags, 0, suggestFD, suggestFD).fd
   },
   doReadv: function (stream, iov, iovcnt, offset) {
      var ret = 0;
      for (var i = 0; i < iovcnt; i++) {
         var ptr = HEAP32[iov + i * 8 >> 2];
         var len = HEAP32[iov + (i * 8 + 4) >> 2];
         var curr = FS.read(stream, HEAP8, ptr, len, offset);
         if (curr < 0) return -1;
         ret += curr;
         if (curr < len) break
      }
      return ret
   },
   doWritev: function (stream, iov, iovcnt, offset) {
      var ret = 0;
      for (var i = 0; i < iovcnt; i++) {
         var ptr = HEAP32[iov + i * 8 >> 2];
         var len = HEAP32[iov + (i * 8 + 4) >> 2];
         var curr = FS.write(stream, HEAP8, ptr, len, offset);
         if (curr < 0) return -1;
         ret += curr
      }
      return ret
   },
   varargs: undefined,
   get: function () {
      SYSCALLS.varargs += 4;
      var ret = HEAP32[SYSCALLS.varargs - 4 >> 2];
      return ret
   },
   getStr: function (ptr) {
      var ret = UTF8ToString(ptr);
      return ret
   },
   getStreamFromFD: function (fd) {
      var stream = FS.getStream(fd);
      if (!stream) throw new FS.ErrnoError(8);
      return stream
   },
   get64: function (low, high) {
      return low
   }
};

function ___syscall_accept4(fd, addr, addrlen, flags) {
   try {
      var sock = getSocketFromFD(fd);
      var newsock = sock.sock_ops.accept(sock);
      if (addr) {
         var errno = writeSockaddr(addr, newsock.family, DNS.lookup_name(newsock.daddr), newsock.dport, addrlen)
      }
      return newsock.stream.fd
   } catch (e) {
      if (typeof FS === "undefined" || !(e instanceof FS.ErrnoError)) throw e;
      return -e.errno
   }
}

function ___syscall_access(path, amode) {
   try {
      path = SYSCALLS.getStr(path);
      return SYSCALLS.doAccess(path, amode)
   } catch (e) {
      if (typeof FS === "undefined" || !(e instanceof FS.ErrnoError)) throw e;
      return -e.errno
   }
}

function inetNtop4(addr) {
   return (addr & 255) + "." + (addr >> 8 & 255) + "." + (addr >> 16 & 255) + "." + (addr >> 24 & 255)
}

function inetNtop6(ints) {
   var str = "";
   var word = 0;
   var longest = 0;
   var lastzero = 0;
   var zstart = 0;
   var len = 0;
   var i = 0;
   var parts = [ints[0] & 65535, ints[0] >> 16, ints[1] & 65535, ints[1] >> 16, ints[2] & 65535, ints[2] >> 16, ints[3] & 65535, ints[3] >> 16];
   var hasipv4 = true;
   var v4part = "";
   for (i = 0; i < 5; i++) {
      if (parts[i] !== 0) {
         hasipv4 = false;
         break
      }
   }
   if (hasipv4) {
      v4part = inetNtop4(parts[6] | parts[7] << 16);
      if (parts[5] === -1) {
         str = "::ffff:";
         str += v4part;
         return str
      }
      if (parts[5] === 0) {
         str = "::";
         if (v4part === "0.0.0.0") v4part = "";
         if (v4part === "0.0.0.1") v4part = "1";
         str += v4part;
         return str
      }
   }
   for (word = 0; word < 8; word++) {
      if (parts[word] === 0) {
         if (word - lastzero > 1) {
            len = 0
         }
         lastzero = word;
         len++
      }
      if (len > longest) {
         longest = len;
         zstart = word - longest + 1
      }
   }
   for (word = 0; word < 8; word++) {
      if (longest > 1) {
         if (parts[word] === 0 && word >= zstart && word < zstart + longest) {
            if (word === zstart) {
               str += ":";
               if (zstart === 0) str += ":"
            }
            continue
         }
      }
      str += Number(_ntohs(parts[word] & 65535)).toString(16);
      str += word < 7 ? ":" : ""
   }
   return str
}

function readSockaddr(sa, salen) {
   var family = HEAP16[sa >> 1];
   var port = _ntohs(HEAPU16[sa + 2 >> 1]);
   var addr;
   switch (family) {
      case 2:
         if (salen !== 16) {
            return {
               errno: 28
            }
         }
         addr = HEAP32[sa + 4 >> 2];
         addr = inetNtop4(addr);
         break;
      case 10:
         if (salen !== 28) {
            return {
               errno: 28
            }
         }
         addr = [HEAP32[sa + 8 >> 2], HEAP32[sa + 12 >> 2], HEAP32[sa + 16 >> 2], HEAP32[sa + 20 >> 2]];
         addr = inetNtop6(addr);
         break;
      default:
         return {
            errno: 5
         }
   }
   return {
      family: family,
      addr: addr,
      port: port
   }
}

function getSocketAddress(addrp, addrlen, allowNull) {
   if (allowNull && addrp === 0) return null;
   var info = readSockaddr(addrp, addrlen);
   if (info.errno) throw new FS.ErrnoError(info.errno);
   info.addr = DNS.lookup_addr(info.addr) || info.addr;
   return info
}

function ___syscall_bind(fd, addr, addrlen) {
   try {
      var sock = getSocketFromFD(fd);
      var info = getSocketAddress(addr, addrlen);
      sock.sock_ops.bind(sock, info.addr, info.port);
      return 0
   } catch (e) {
      if (typeof FS === "undefined" || !(e instanceof FS.ErrnoError)) throw e;
      return -e.errno
   }
}

function ___syscall_connect(fd, addr, addrlen) {
   try {
      var sock = getSocketFromFD(fd);
      var info = getSocketAddress(addr, addrlen);
      sock.sock_ops.connect(sock, info.addr, info.port);
      return 0
   } catch (e) {
      if (typeof FS === "undefined" || !(e instanceof FS.ErrnoError)) throw e;
      return -e.errno
   }
}

function ___syscall_fcntl64(fd, cmd, varargs) {
   SYSCALLS.varargs = varargs;
   try {
      var stream = SYSCALLS.getStreamFromFD(fd);
      switch (cmd) {
         case 0: {
            var arg = SYSCALLS.get();
            if (arg < 0) {
               return -28
            }
            var newStream;
            newStream = FS.open(stream.path, stream.flags, 0, arg);
            return newStream.fd
         }
         case 1:
         case 2:
            return 0;
         case 3:
            return stream.flags;
         case 4: {
            var arg = SYSCALLS.get();
            stream.flags |= arg;
            return 0
         }
         case 5: {
            var arg = SYSCALLS.get();
            var offset = 0;
            HEAP16[arg + offset >> 1] = 2;
            return 0
         }
         case 6:
         case 7:
            return 0;
         case 16:
         case 8:
            return -28;
         case 9:
            setErrNo(28);
            return -1;
         default: {
            return -28
         }
      }
   } catch (e) {
      if (typeof FS === "undefined" || !(e instanceof FS.ErrnoError)) throw e;
      return -e.errno
   }
}

function ___syscall_fstat64(fd, buf) {
   try {
      var stream = SYSCALLS.getStreamFromFD(fd);
      return SYSCALLS.doStat(FS.stat, stream.path, buf)
   } catch (e) {
      if (typeof FS === "undefined" || !(e instanceof FS.ErrnoError)) throw e;
      return -e.errno
   }
}

function ___syscall_fstatat64(dirfd, path, buf, flags) {
   try {
      path = SYSCALLS.getStr(path);
      var nofollow = flags & 256;
      var allowEmpty = flags & 4096;
      flags = flags & ~4352;
      path = SYSCALLS.calculateAt(dirfd, path, allowEmpty);
      return SYSCALLS.doStat(nofollow ? FS.lstat : FS.stat, path, buf)
   } catch (e) {
      if (typeof FS === "undefined" || !(e instanceof FS.ErrnoError)) throw e;
      return -e.errno
   }
}

function ___syscall_getdents64(fd, dirp, count) {
   try {
      var stream = SYSCALLS.getStreamFromFD(fd);
      if (!stream.getdents) {
         stream.getdents = FS.readdir(stream.path)
      }
      var struct_size = 280;
      var pos = 0;
      var off = FS.llseek(stream, 0, 1);
      var idx = Math.floor(off / struct_size);
      while (idx < stream.getdents.length && pos + struct_size <= count) {
         var id;
         var type;
         var name = stream.getdents[idx];
         if (name === ".") {
            id = stream.id;
            type = 4
         } else if (name === "..") {
            var lookup = FS.lookupPath(stream.path, {
               parent: true
            });
            id = lookup.node.id;
            type = 4
         } else {
            var child = FS.lookupNode(stream, name);
            id = child.id;
            type = FS.isChrdev(child.mode) ? 2 : FS.isDir(child.mode) ? 4 : FS.isLink(child.mode) ? 10 : 8
         }
         tempI64 = [id >>> 0, (tempDouble = id, +Math.abs(tempDouble) >= 1 ? tempDouble > 0 ? (Math.min(+Math.floor(tempDouble / 4294967296), 4294967295) | 0) >>> 0 : ~~+Math.ceil((tempDouble - +(~~tempDouble >>> 0)) / 4294967296) >>> 0 : 0)], HEAP32[dirp + pos >> 2] = tempI64[0], HEAP32[dirp + pos + 4 >> 2] = tempI64[1];
         tempI64 = [(idx + 1) * struct_size >>> 0, (tempDouble = (idx + 1) * struct_size, +Math.abs(tempDouble) >= 1 ? tempDouble > 0 ? (Math.min(+Math.floor(tempDouble / 4294967296), 4294967295) | 0) >>> 0 : ~~+Math.ceil((tempDouble - +(~~tempDouble >>> 0)) / 4294967296) >>> 0 : 0)], HEAP32[dirp + pos + 8 >> 2] = tempI64[0], HEAP32[dirp + pos + 12 >> 2] = tempI64[1];
         HEAP16[dirp + pos + 16 >> 1] = 280;
         HEAP8[dirp + pos + 18 >> 0] = type;
         stringToUTF8(name, dirp + pos + 19, 256);
         pos += struct_size;
         idx += 1
      }
      FS.llseek(stream, idx * struct_size, 0);
      return pos
   } catch (e) {
      if (typeof FS === "undefined" || !(e instanceof FS.ErrnoError)) throw e;
      return -e.errno
   }
}

function ___syscall_getpeername(fd, addr, addrlen) {
   try {
      var sock = getSocketFromFD(fd);
      if (!sock.daddr) {
         return -53
      }
      var errno = writeSockaddr(addr, sock.family, DNS.lookup_name(sock.daddr), sock.dport, addrlen);
      return 0
   } catch (e) {
      if (typeof FS === "undefined" || !(e instanceof FS.ErrnoError)) throw e;
      return -e.errno
   }
}

function ___syscall_getsockname(fd, addr, addrlen) {
   try {
      err("__syscall_getsockname " + fd);
      var sock = getSocketFromFD(fd);
      var errno = writeSockaddr(addr, sock.family, DNS.lookup_name(sock.saddr || "0.0.0.0"), sock.sport, addrlen);
      return 0
   } catch (e) {
      if (typeof FS === "undefined" || !(e instanceof FS.ErrnoError)) throw e;
      return -e.errno
   }
}

function ___syscall_getsockopt(fd, level, optname, optval, optlen) {
   try {
      var sock = getSocketFromFD(fd);
      if (level === 1) {
         if (optname === 4) {
            HEAP32[optval >> 2] = sock.error;
            HEAP32[optlen >> 2] = 4;
            sock.error = null;
            return 0
         }
      }
      return -50
   } catch (e) {
      if (typeof FS === "undefined" || !(e instanceof FS.ErrnoError)) throw e;
      return -e.errno
   }
}

function ___syscall_getegid32() {
   return 0
}

function ___syscall_getuid32() {
   return ___syscall_getegid32()
}

function ___syscall_listen(fd, backlog) {
   try {
      var sock = getSocketFromFD(fd);
      sock.sock_ops.listen(sock, backlog);
      return 0
   } catch (e) {
      if (typeof FS === "undefined" || !(e instanceof FS.ErrnoError)) throw e;
      return -e.errno
   }
}

function ___syscall_lstat64(path, buf) {
   try {
      path = SYSCALLS.getStr(path);
      return SYSCALLS.doStat(FS.lstat, path, buf)
   } catch (e) {
      if (typeof FS === "undefined" || !(e instanceof FS.ErrnoError)) throw e;
      return -e.errno
   }
}

function ___syscall_mkdir(path, mode) {
   try {
      path = SYSCALLS.getStr(path);
      return SYSCALLS.doMkdir(path, mode)
   } catch (e) {
      if (typeof FS === "undefined" || !(e instanceof FS.ErrnoError)) throw e;
      return -e.errno
   }
}

function ___syscall_open(path, flags, varargs) {
   SYSCALLS.varargs = varargs;
   try {
      var pathname = SYSCALLS.getStr(path);
      var mode = varargs ? SYSCALLS.get() : 0;
      var stream = FS.open(pathname, flags, mode);
      return stream.fd
   } catch (e) {
      if (typeof FS === "undefined" || !(e instanceof FS.ErrnoError)) throw e;
      return -e.errno
   }
}

function ___syscall_poll(fds, nfds, timeout) {
   try {
      var nonzero = 0;
      for (var i = 0; i < nfds; i++) {
         var pollfd = fds + 8 * i;
         var fd = HEAP32[pollfd >> 2];
         var events = HEAP16[pollfd + 4 >> 1];
         var mask = 32;
         var stream = FS.getStream(fd);
         if (stream) {
            mask = SYSCALLS.DEFAULT_POLLMASK;
            if (stream.stream_ops.poll) {
               mask = stream.stream_ops.poll(stream)
            }
         }
         mask &= events | 8 | 16;
         if (mask) nonzero++;
         HEAP16[pollfd + 6 >> 1] = mask
      }
      return nonzero
   } catch (e) {
      if (typeof FS === "undefined" || !(e instanceof FS.ErrnoError)) throw e;
      return -e.errno
   }
}

function ___syscall_recvfrom(fd, buf, len, flags, addr, addrlen) {
   try {
      var sock = getSocketFromFD(fd);
      var msg = sock.sock_ops.recvmsg(sock, len);
      if (!msg) return 0;
      if (addr) {
         var errno = writeSockaddr(addr, sock.family, DNS.lookup_name(msg.addr), msg.port, addrlen)
      }
      HEAPU8.set(msg.buffer, buf);
      return msg.buffer.byteLength
   } catch (e) {
      if (typeof FS === "undefined" || !(e instanceof FS.ErrnoError)) throw e;
      return -e.errno
   }
}

function ___syscall_rename(old_path, new_path) {
   try {
      old_path = SYSCALLS.getStr(old_path);
      new_path = SYSCALLS.getStr(new_path);
      FS.rename(old_path, new_path);
      return 0
   } catch (e) {
      if (typeof FS === "undefined" || !(e instanceof FS.ErrnoError)) throw e;
      return -e.errno
   }
}

function ___syscall_rmdir(path) {
   try {
      path = SYSCALLS.getStr(path);
      FS.rmdir(path);
      return 0
   } catch (e) {
      if (typeof FS === "undefined" || !(e instanceof FS.ErrnoError)) throw e;
      return -e.errno
   }
}

function ___syscall_sendto(fd, message, length, flags, addr, addr_len) {
   try {
      var sock = getSocketFromFD(fd);
      var dest = getSocketAddress(addr, addr_len, true);
      if (!dest) {
         return FS.write(sock.stream, HEAP8, message, length)
      } else {
         return sock.sock_ops.sendmsg(sock, HEAP8, message, length, dest.addr, dest.port)
      }
   } catch (e) {
      if (typeof FS === "undefined" || !(e instanceof FS.ErrnoError)) throw e;
      return -e.errno
   }
}

function ___syscall_socket(domain, type, protocol) {
   try {
      var sock = SOCKFS.createSocket(domain, type, protocol);
      return sock.stream.fd
   } catch (e) {
      if (typeof FS === "undefined" || !(e instanceof FS.ErrnoError)) throw e;
      return -e.errno
   }
}

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

function ___syscall_unlink(path) {
   try {
      path = SYSCALLS.getStr(path);
      FS.unlink(path);
      return 0
   } catch (e) {
      if (typeof FS === "undefined" || !(e instanceof FS.ErrnoError)) throw e;
      return -e.errno
   }
}

function __gmtime_js(time, tmPtr) {
   var date = new Date(HEAP32[time >> 2] * 1e3);
   HEAP32[tmPtr >> 2] = date.getUTCSeconds();
   HEAP32[tmPtr + 4 >> 2] = date.getUTCMinutes();
   HEAP32[tmPtr + 8 >> 2] = date.getUTCHours();
   HEAP32[tmPtr + 12 >> 2] = date.getUTCDate();
   HEAP32[tmPtr + 16 >> 2] = date.getUTCMonth();
   HEAP32[tmPtr + 20 >> 2] = date.getUTCFullYear() - 1900;
   HEAP32[tmPtr + 24 >> 2] = date.getUTCDay();
   var start = Date.UTC(date.getUTCFullYear(), 0, 1, 0, 0, 0, 0);
   var yday = (date.getTime() - start) / (1e3 * 60 * 60 * 24) | 0;
   HEAP32[tmPtr + 28 >> 2] = yday
}

function _abort() {
   abort("")
}

function _clock() {
   if (_clock.start === undefined) _clock.start = Date.now();
   return (Date.now() - _clock.start) * (1e6 / 1e3) | 0
}

function _emscripten_get_heap_max() {
   return 2147483648
}

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

function emscripten_realloc_buffer(size) {
   try {
      wasmMemory.grow(size - buffer.byteLength + 65535 >>> 16);
      updateGlobalBufferAndViews(wasmMemory.buffer);
      return 1
   } catch (e) {}
}

function _emscripten_resize_heap(requestedSize) {
   var oldSize = HEAPU8.length;
   requestedSize = requestedSize >>> 0;
   var maxHeapSize = 2147483648;
   if (requestedSize > maxHeapSize) {
      return false
   }
   for (var cutDown = 1; cutDown <= 4; cutDown *= 2) {
      var overGrownHeapSize = oldSize * (1 + .2 / cutDown);
      overGrownHeapSize = Math.min(overGrownHeapSize, requestedSize + 100663296);
      var newSize = Math.min(maxHeapSize, alignUp(Math.max(requestedSize, overGrownHeapSize), 65536));
      var replacement = emscripten_realloc_buffer(newSize);
      if (replacement) {
         return true
      }
   }
   return false
}
var ENV = {};

function getExecutableName() {
   return thisProgram || "./this.program"
}

function getEnvStrings() {
   if (!getEnvStrings.strings) {
      var lang = (typeof navigator === "object" && navigator.languages && navigator.languages[0] || "C").replace("-", "_") + ".UTF-8";
      var env = {
         "USER": "web_user",
         "LOGNAME": "web_user",
         "PATH": "/",
         "PWD": "/",
         "HOME": "/home/web_user",
         "LANG": lang,
         "_": getExecutableName()
      };
      for (var x in ENV) {
         if (ENV[x] === undefined) delete env[x];
         else env[x] = ENV[x]
      }
      var strings = [];
      for (var x in env) {
         strings.push(x + "=" + env[x])
      }
      getEnvStrings.strings = strings
   }
   return getEnvStrings.strings
}

function _environ_get(__environ, environ_buf) {
   var bufSize = 0;
   getEnvStrings().forEach(function (string, i) {
      var ptr = environ_buf + bufSize;
      HEAP32[__environ + i * 4 >> 2] = ptr;
      writeAsciiToMemory(string, ptr);
      bufSize += string.length + 1
   });
   return 0
}

function _environ_sizes_get(penviron_count, penviron_buf_size) {
   var strings = getEnvStrings();
   HEAP32[penviron_count >> 2] = strings.length;
   var bufSize = 0;
   strings.forEach(function (string) {
      bufSize += string.length + 1
   });
   HEAP32[penviron_buf_size >> 2] = bufSize;
   return 0
}

function _exit(status) {
   exit(status)
}

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

function _fd_fdstat_get(fd, pbuf) {
   try {
      var stream = SYSCALLS.getStreamFromFD(fd);
      var type = stream.tty ? 2 : FS.isDir(stream.mode) ? 3 : FS.isLink(stream.mode) ? 7 : 4;
      HEAP8[pbuf >> 0] = type;
      return 0
   } catch (e) {
      if (typeof FS === "undefined" || !(e instanceof FS.ErrnoError)) throw e;
      return e.errno
   }
}

function _fd_read(fd, iov, iovcnt, pnum) {
   try {
      var stream = SYSCALLS.getStreamFromFD(fd);
      var num = SYSCALLS.doReadv(stream, iov, iovcnt);
      HEAP32[pnum >> 2] = num;
      return 0
   } catch (e) {
      if (typeof FS === "undefined" || !(e instanceof FS.ErrnoError)) throw e;
      return e.errno
   }
}

function _fd_seek(fd, offset_low, offset_high, whence, newOffset) {
   try {
      var stream = SYSCALLS.getStreamFromFD(fd);
      var HIGH_OFFSET = 4294967296;
      var offset = offset_high * HIGH_OFFSET + (offset_low >>> 0);
      var DOUBLE_LIMIT = 9007199254740992;
      if (offset <= -DOUBLE_LIMIT || offset >= DOUBLE_LIMIT) {
         return -61
      }
      FS.llseek(stream, offset, whence);
      tempI64 = [stream.position >>> 0, (tempDouble = stream.position, +Math.abs(tempDouble) >= 1 ? tempDouble > 0 ? (Math.min(+Math.floor(tempDouble / 4294967296), 4294967295) | 0) >>> 0 : ~~+Math.ceil((tempDouble - +(~~tempDouble >>> 0)) / 4294967296) >>> 0 : 0)], HEAP32[newOffset >> 2] = tempI64[0], HEAP32[newOffset + 4 >> 2] = tempI64[1];
      if (stream.getdents && offset === 0 && whence === 0) stream.getdents = null;
      return 0
   } catch (e) {
      if (typeof FS === "undefined" || !(e instanceof FS.ErrnoError)) throw e;
      return e.errno
   }
}

function _fd_write(fd, iov, iovcnt, pnum) {
   try {
      var stream = SYSCALLS.getStreamFromFD(fd);
      var num = SYSCALLS.doWritev(stream, iov, iovcnt);
      HEAP32[pnum >> 2] = num;
      return 0
   } catch (e) {
      if (typeof FS === "undefined" || !(e instanceof FS.ErrnoError)) throw e;
      return e.errno
   }
}
var GAI_ERRNO_MESSAGES = {};

function _gai_strerror(val) {
   var buflen = 256;
   if (!_gai_strerror.buffer) {
      _gai_strerror.buffer = _malloc(buflen);
      GAI_ERRNO_MESSAGES["0"] = "Success";
      GAI_ERRNO_MESSAGES["" + -1] = "Invalid value for 'ai_flags' field";
      GAI_ERRNO_MESSAGES["" + -2] = "NAME or SERVICE is unknown";
      GAI_ERRNO_MESSAGES["" + -3] = "Temporary failure in name resolution";
      GAI_ERRNO_MESSAGES["" + -4] = "Non-recoverable failure in name res";
      GAI_ERRNO_MESSAGES["" + -6] = "'ai_family' not supported";
      GAI_ERRNO_MESSAGES["" + -7] = "'ai_socktype' not supported";
      GAI_ERRNO_MESSAGES["" + -8] = "SERVICE not supported for 'ai_socktype'";
      GAI_ERRNO_MESSAGES["" + -10] = "Memory allocation failure";
      GAI_ERRNO_MESSAGES["" + -11] = "System error returned in 'errno'";
      GAI_ERRNO_MESSAGES["" + -12] = "Argument buffer overflow"
   }
   var msg = "Unknown error";
   if (val in GAI_ERRNO_MESSAGES) {
      if (GAI_ERRNO_MESSAGES[val].length > buflen - 1) {
         msg = "Message too long"
      } else {
         msg = GAI_ERRNO_MESSAGES[val]
      }
   }
   writeAsciiToMemory(msg, _gai_strerror.buffer);
   return _gai_strerror.buffer
}

function _getaddrinfo(node, service, hint, out) {
   var addr = 0;
   var port = 0;
   var flags = 0;
   var family = 0;
   var type = 0;
   var proto = 0;
   var ai;

   function allocaddrinfo(family, type, proto, canon, addr, port) {
      var sa, salen, ai;
      var errno;
      salen = family === 10 ? 28 : 16;
      addr = family === 10 ? inetNtop6(addr) : inetNtop4(addr);
      sa = _malloc(salen);
      errno = writeSockaddr(sa, family, addr, port);
      assert(!errno);
      ai = _malloc(32);
      HEAP32[ai + 4 >> 2] = family;
      HEAP32[ai + 8 >> 2] = type;
      HEAP32[ai + 12 >> 2] = proto;
      HEAP32[ai + 24 >> 2] = canon;
      HEAP32[ai + 20 >> 2] = sa;
      if (family === 10) {
         HEAP32[ai + 16 >> 2] = 28
      } else {
         HEAP32[ai + 16 >> 2] = 16
      }
      HEAP32[ai + 28 >> 2] = 0;
      return ai
   }
   if (hint) {
      flags = HEAP32[hint >> 2];
      family = HEAP32[hint + 4 >> 2];
      type = HEAP32[hint + 8 >> 2];
      proto = HEAP32[hint + 12 >> 2]
   }
   if (type && !proto) {
      proto = type === 2 ? 17 : 6
   }
   if (!type && proto) {
      type = proto === 17 ? 2 : 1
   }
   if (proto === 0) {
      proto = 6
   }
   if (type === 0) {
      type = 1
   }
   if (!node && !service) {
      return -2
   }
   if (flags & ~(1 | 2 | 4 | 1024 | 8 | 16 | 32)) {
      return -1
   }
   if (hint !== 0 && HEAP32[hint >> 2] & 2 && !node) {
      return -1
   }
   if (flags & 32) {
      return -2
   }
   if (type !== 0 && type !== 1 && type !== 2) {
      return -7
   }
   if (family !== 0 && family !== 2 && family !== 10) {
      return -6
   }
   if (service) {
      service = UTF8ToString(service);
      port = parseInt(service, 10);
      if (isNaN(port)) {
         if (flags & 1024) {
            return -2
         }
         return -8
      }
   }
   if (!node) {
      if (family === 0) {
         family = 2
      }
      if ((flags & 1) === 0) {
         if (family === 2) {
            addr = _htonl(2130706433)
         } else {
            addr = [0, 0, 0, 1]
         }
      }
      ai = allocaddrinfo(family, type, proto, null, addr, port);
      HEAP32[out >> 2] = ai;
      return 0
   }
   node = UTF8ToString(node);
   addr = inetPton4(node);
   if (addr !== null) {
      if (family === 0 || family === 2) {
         family = 2
      } else if (family === 10 && flags & 8) {
         addr = [0, 0, _htonl(65535), addr];
         family = 10
      } else {
         return -2
      }
   } else {
      addr = inetPton6(node);
      if (addr !== null) {
         if (family === 0 || family === 10) {
            family = 10
         } else {
            return -2
         }
      }
   }
   if (addr != null) {
      ai = allocaddrinfo(family, type, proto, node, addr, port);
      HEAP32[out >> 2] = ai;
      return 0
   }
   if (flags & 4) {
      return -2
   }
   node = DNS.lookup_name(node);
   addr = inetPton4(node);
   if (family === 0) {
      family = 2
   } else if (family === 10) {
      addr = [0, 0, _htonl(65535), addr]
   }
   ai = allocaddrinfo(family, type, proto, null, addr, port);
   HEAP32[out >> 2] = ai;
   return 0
}

function _getnameinfo(sa, salen, node, nodelen, serv, servlen, flags) {
   var info = readSockaddr(sa, salen);
   if (info.errno) {
      return -6
   }
   var port = info.port;
   var addr = info.addr;
   var overflowed = false;
   if (node && nodelen) {
      var lookup;
      if (flags & 1 || !(lookup = DNS.lookup_addr(addr))) {
         if (flags & 8) {
            return -2
         }
      } else {
         addr = lookup
      }
      var numBytesWrittenExclNull = stringToUTF8(addr, node, nodelen);
      if (numBytesWrittenExclNull + 1 >= nodelen) {
         overflowed = true
      }
   }
   if (serv && servlen) {
      port = "" + port;
      var numBytesWrittenExclNull = stringToUTF8(port, serv, servlen);
      if (numBytesWrittenExclNull + 1 >= servlen) {
         overflowed = true
      }
   }
   if (overflowed) {
      return -12
   }
   return 0
}

function _gettimeofday(ptr) {
   var now = Date.now();
   HEAP32[ptr >> 2] = now / 1e3 | 0;
   HEAP32[ptr + 4 >> 2] = now % 1e3 * 1e3 | 0;
   return 0
}

function _tzset_impl() {
   var currentYear = (new Date).getFullYear();
   var winter = new Date(currentYear, 0, 1);
   var summer = new Date(currentYear, 6, 1);
   var winterOffset = winter.getTimezoneOffset();
   var summerOffset = summer.getTimezoneOffset();
   var stdTimezoneOffset = Math.max(winterOffset, summerOffset);
   HEAP32[__get_timezone() >> 2] = stdTimezoneOffset * 60;
   HEAP32[__get_daylight() >> 2] = Number(winterOffset != summerOffset);

   function extractZone(date) {
      var match = date.toTimeString().match(/\(([A-Za-z ]+)\)$/);
      return match ? match[1] : "GMT"
   }
   var winterName = extractZone(winter);
   var summerName = extractZone(summer);
   var winterNamePtr = allocateUTF8(winterName);
   var summerNamePtr = allocateUTF8(summerName);
   if (summerOffset < winterOffset) {
      HEAP32[__get_tzname() >> 2] = winterNamePtr;
      HEAP32[__get_tzname() + 4 >> 2] = summerNamePtr
   } else {
      HEAP32[__get_tzname() >> 2] = summerNamePtr;
      HEAP32[__get_tzname() + 4 >> 2] = winterNamePtr
   }
}

function _tzset() {
   if (_tzset.called) return;
   _tzset.called = true;
   _tzset_impl()
}

function _localtime_r(time, tmPtr) {
   _tzset();
   var date = new Date(HEAP32[time >> 2] * 1e3);
   HEAP32[tmPtr >> 2] = date.getSeconds();
   HEAP32[tmPtr + 4 >> 2] = date.getMinutes();
   HEAP32[tmPtr + 8 >> 2] = date.getHours();
   HEAP32[tmPtr + 12 >> 2] = date.getDate();
   HEAP32[tmPtr + 16 >> 2] = date.getMonth();
   HEAP32[tmPtr + 20 >> 2] = date.getFullYear() - 1900;
   HEAP32[tmPtr + 24 >> 2] = date.getDay();
   var start = new Date(date.getFullYear(), 0, 1);
   var yday = (date.getTime() - start.getTime()) / (1e3 * 60 * 60 * 24) | 0;
   HEAP32[tmPtr + 28 >> 2] = yday;
   HEAP32[tmPtr + 36 >> 2] = -(date.getTimezoneOffset() * 60);
   var summerOffset = new Date(date.getFullYear(), 6, 1).getTimezoneOffset();
   var winterOffset = start.getTimezoneOffset();
   var dst = (summerOffset != winterOffset && date.getTimezoneOffset() == Math.min(winterOffset, summerOffset)) | 0;
   HEAP32[tmPtr + 32 >> 2] = dst;
   var zonePtr = HEAP32[__get_tzname() + (dst ? 4 : 0) >> 2];
   HEAP32[tmPtr + 40 >> 2] = zonePtr;
   return tmPtr
}

function _mktime(tmPtr) {
   _tzset();
   var date = new Date(HEAP32[tmPtr + 20 >> 2] + 1900, HEAP32[tmPtr + 16 >> 2], HEAP32[tmPtr + 12 >> 2], HEAP32[tmPtr + 8 >> 2], HEAP32[tmPtr + 4 >> 2], HEAP32[tmPtr >> 2], 0);
   var dst = HEAP32[tmPtr + 32 >> 2];
   var guessedOffset = date.getTimezoneOffset();
   var start = new Date(date.getFullYear(), 0, 1);
   var summerOffset = new Date(date.getFullYear(), 6, 1).getTimezoneOffset();
   var winterOffset = start.getTimezoneOffset();
   var dstOffset = Math.min(winterOffset, summerOffset);
   if (dst < 0) {
      HEAP32[tmPtr + 32 >> 2] = Number(summerOffset != winterOffset && dstOffset == guessedOffset)
   } else if (dst > 0 != (dstOffset == guessedOffset)) {
      var nonDstOffset = Math.max(winterOffset, summerOffset);
      var trueOffset = dst > 0 ? dstOffset : nonDstOffset;
      date.setTime(date.getTime() + (trueOffset - guessedOffset) * 6e4)
   }
   HEAP32[tmPtr + 24 >> 2] = date.getDay();
   var yday = (date.getTime() - start.getTime()) / (1e3 * 60 * 60 * 24) | 0;
   HEAP32[tmPtr + 28 >> 2] = yday;
   HEAP32[tmPtr >> 2] = date.getSeconds();
   HEAP32[tmPtr + 4 >> 2] = date.getMinutes();
   HEAP32[tmPtr + 8 >> 2] = date.getHours();
   HEAP32[tmPtr + 12 >> 2] = date.getDate();
   HEAP32[tmPtr + 16 >> 2] = date.getMonth();
   return date.getTime() / 1e3 | 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()) {
         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 {
         newDate.setDate(newDate.getDate() + days);
         return newDate
      }
   }
   return newDate
}

function _strftime(s, maxsize, format, tm) {
   var tm_zone = HEAP32[tm + 40 >> 2];
   var date = {
      tm_sec: HEAP32[tm >> 2],
      tm_min: HEAP32[tm + 4 >> 2],
      tm_hour: HEAP32[tm + 8 >> 2],
      tm_mday: HEAP32[tm + 12 >> 2],
      tm_mon: HEAP32[tm + 16 >> 2],
      tm_year: HEAP32[tm + 20 >> 2],
      tm_wday: HEAP32[tm + 24 >> 2],
      tm_yday: HEAP32[tm + 28 >> 2],
      tm_isdst: HEAP32[tm + 32 >> 2],
      tm_gmtoff: HEAP32[tm + 36 >> 2],
      tm_zone: tm_zone ? UTF8ToString(tm_zone) : ""
   };
   var pattern = UTF8ToString(format);
   var EXPANSION_RULES_1 = {
      "%c": "%a %b %d %H:%M:%S %Y",
      "%D": "%m/%d/%y",
      "%F": "%Y-%m-%d",
      "%h": "%b",
      "%r": "%I:%M:%S %p",
      "%R": "%H:%M",
      "%T": "%H:%M:%S",
      "%x": "%m/%d/%y",
      "%X": "%H:%M:%S",
      "%Ec": "%c",
      "%EC": "%C",
      "%Ex": "%m/%d/%y",
      "%EX": "%H:%M:%S",
      "%Ey": "%y",
      "%EY": "%Y",
      "%Od": "%d",
      "%Oe": "%e",
      "%OH": "%H",
      "%OI": "%I",
      "%Om": "%m",
      "%OM": "%M",
      "%OS": "%S",
      "%Ou": "%u",
      "%OU": "%U",
      "%OV": "%V",
      "%Ow": "%w",
      "%OW": "%W",
      "%Oy": "%y"
   };
   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:
            return new Date(janFourth.getFullYear() - 1, 11, 29);
         case 1:
            return janFourth;
         case 2:
            return new Date(janFourth.getFullYear(), 0, 3);
         case 3:
            return new Date(janFourth.getFullYear(), 0, 2);
         case 4:
            return new Date(janFourth.getFullYear(), 0, 1);
         case 5:
            return new Date(janFourth.getFullYear() - 1, 11, 31);
         case 6:
            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) {
         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) {
         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) {
         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) {
         return date.tm_wday || 7
      },
      "%U": function (date) {
         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);
         if (compareByDay(firstSunday, endDate) < 0) {
            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) {
         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) {
            return "53"
         }
         if (compareByDay(firstWeekStartNextYear, endDate) <= 0) {
            return "01"
         }
         var daysDifference;
         if (firstWeekStartThisYear.getFullYear() < date.tm_year + 1900) {
            daysDifference = date.tm_yday + 32 - firstWeekStartThisYear.getDate()
         } else {
            daysDifference = date.tm_yday + 1 - firstWeekStartThisYear.getDate()
         }
         return leadingNulls(Math.ceil(daysDifference / 7), 2)
      },
      "%w": function (date) {
         return date.tm_wday
      },
      "%W": function (date) {
         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);
         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) {
         return (date.tm_year + 1900).toString().substring(2)
      },
      "%Y": function (date) {
         return date.tm_year + 1900
      },
      "%z": function (date) {
         var off = date.tm_gmtoff;
         var ahead = off >= 0;
         off = Math.abs(off) / 60;
         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.includes(rule)) {
         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 _time(ptr) {
   var ret = Date.now() / 1e3 | 0;
   if (ptr) {
      HEAP32[ptr >> 2] = ret
   }
   return ret
}
var FSNode = function (parent, name, mode, rdev) {
   if (!parent) {
      parent = this
   }
   this.parent = parent;
   this.mount = parent.mount;
   this.mounted = null;
   this.id = FS.nextInode++;
   this.name = name;
   this.mode = mode;
   this.node_ops = {};
   this.stream_ops = {};
   this.rdev = rdev
};
var readMode = 292 | 73;
var writeMode = 146;
Object.defineProperties(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)
      }
   }
});
FS.FSNode = FSNode;
FS.staticInit();

function intArrayFromString(stringy, dontAddNull, length) {
   var len = length > 0 ? length : lengthBytesUTF8(stringy) + 1;
   var u8array = new Array(len);
   var numBytesWritten = stringToUTF8Array(stringy, u8array, 0, u8array.length);
   if (dontAddNull) u8array.length = numBytesWritten;
   return u8array
}
var asmLibraryArg = {
   "l": ___assert_fail,
   "L": ___clock_gettime,
   "B": ___syscall_accept4,
   "W": ___syscall_access,
   "A": ___syscall_bind,
   "z": ___syscall_connect,
   "f": ___syscall_fcntl64,
   "V": ___syscall_fstat64,
   "T": ___syscall_fstatat64,
   "I": ___syscall_getdents64,
   "y": ___syscall_getpeername,
   "x": ___syscall_getsockname,
   "w": ___syscall_getsockopt,
   "P": ___syscall_getuid32,
   "v": ___syscall_listen,
   "S": ___syscall_lstat64,
   "M": ___syscall_mkdir,
   "K": ___syscall_open,
   "J": ___syscall_poll,
   "u": ___syscall_recvfrom,
   "H": ___syscall_rename,
   "G": ___syscall_rmdir,
   "t": ___syscall_sendto,
   "p": ___syscall_socket,
   "U": ___syscall_stat64,
   "E": ___syscall_unlink,
   "O": __gmtime_js,
   "a": _abort,
   "s": _clock,
   "b": _clock_gettime,
   "F": _emscripten_get_heap_max,
   "q": _emscripten_get_now,
   "C": _emscripten_memcpy_big,
   "D": _emscripten_resize_heap,
   "Q": _environ_get,
   "R": _environ_sizes_get,
   "k": _exit,
   "m": _fd_close,
   "N": _fd_fdstat_get,
   "X": _fd_read,
   "r": _fd_seek,
   "o": _fd_write,
   "j": _gai_strerror,
   "h": _getaddrinfo,
   "g": _getnameinfo,
   "d": _gettimeofday,
   "e": _localtime_r,
   "n": _mktime,
   "c": _strftime,
   "i": _time
};
var asm = createWasm();
var ___wasm_call_ctors = Module["___wasm_call_ctors"] = function () {
   return (___wasm_call_ctors = Module["___wasm_call_ctors"] = Module["asm"]["Z"]).apply(null, arguments)
};
var _SnapShot = Module["_SnapShot"] = function () {
   return (_SnapShot = Module["_SnapShot"] = Module["asm"]["_"]).apply(null, arguments)
};
var _avcodec_alloc_context3 = Module["_avcodec_alloc_context3"] = function () {
   return (_avcodec_alloc_context3 = Module["_avcodec_alloc_context3"] = Module["asm"]["$"]).apply(null, arguments)
};
var _avcodec_open2 = Module["_avcodec_open2"] = function () {
   return (_avcodec_open2 = Module["_avcodec_open2"] = Module["asm"]["aa"]).apply(null, arguments)
};
var _av_new_packet = Module["_av_new_packet"] = function () {
   return (_av_new_packet = Module["_av_new_packet"] = Module["asm"]["ba"]).apply(null, arguments)
};
var _avcodec_close = Module["_avcodec_close"] = function () {
   return (_avcodec_close = Module["_avcodec_close"] = Module["asm"]["ca"]).apply(null, arguments)
};
var _Record_Stop = Module["_Record_Stop"] = function () {
   return (_Record_Stop = Module["_Record_Stop"] = Module["asm"]["da"]).apply(null, arguments)
};
var _avcodec_free_context = Module["_avcodec_free_context"] = function () {
   return (_avcodec_free_context = Module["_avcodec_free_context"] = Module["asm"]["ea"]).apply(null, arguments)
};
var _av_frame_free = Module["_av_frame_free"] = function () {
   return (_av_frame_free = Module["_av_frame_free"] = Module["asm"]["fa"]).apply(null, arguments)
};
var _sws_freeContext = Module["_sws_freeContext"] = function () {
   return (_sws_freeContext = Module["_sws_freeContext"] = Module["asm"]["ga"]).apply(null, arguments)
};
var _RecordStart = Module["_RecordStart"] = function () {
   return (_RecordStart = Module["_RecordStart"] = Module["asm"]["ha"]).apply(null, arguments)
};
var _av_dict_free = Module["_av_dict_free"] = function () {
   return (_av_dict_free = Module["_av_dict_free"] = Module["asm"]["ia"]).apply(null, arguments)
};
var _av_frame_alloc = Module["_av_frame_alloc"] = function () {
   return (_av_frame_alloc = Module["_av_frame_alloc"] = Module["asm"]["ja"]).apply(null, arguments)
};
var _free = Module["_free"] = function () {
   return (_free = Module["_free"] = Module["asm"]["ka"]).apply(null, arguments)
};
var _av_packet_free = Module["_av_packet_free"] = function () {
   return (_av_packet_free = Module["_av_packet_free"] = Module["asm"]["la"]).apply(null, arguments)
};
var _decode_video = Module["_decode_video"] = function () {
   return (_decode_video = Module["_decode_video"] = Module["asm"]["ma"]).apply(null, arguments)
};
var _av_parser_parse2 = Module["_av_parser_parse2"] = function () {
   return (_av_parser_parse2 = Module["_av_parser_parse2"] = Module["asm"]["na"]).apply(null, arguments)
};
var _avcodec_send_packet = Module["_avcodec_send_packet"] = function () {
   return (_avcodec_send_packet = Module["_avcodec_send_packet"] = Module["asm"]["oa"]).apply(null, arguments)
};
var _avcodec_receive_frame = Module["_avcodec_receive_frame"] = function () {
   return (_avcodec_receive_frame = Module["_avcodec_receive_frame"] = Module["asm"]["pa"]).apply(null, arguments)
};
var _decode_init = Module["_decode_init"] = function () {
   return (_decode_init = Module["_decode_init"] = Module["asm"]["qa"]).apply(null, arguments)
};
var _avcodec_find_decoder = Module["_avcodec_find_decoder"] = function () {
   return (_avcodec_find_decoder = Module["_avcodec_find_decoder"] = Module["asm"]["ra"]).apply(null, arguments)
};
var _av_parser_init = Module["_av_parser_init"] = function () {
   return (_av_parser_init = Module["_av_parser_init"] = Module["asm"]["sa"]).apply(null, arguments)
};
var _decode_close = Module["_decode_close"] = function () {
   return (_decode_close = Module["_decode_close"] = Module["asm"]["ta"]).apply(null, arguments)
};
var _av_parser_close = Module["_av_parser_close"] = function () {
   return (_av_parser_close = Module["_av_parser_close"] = Module["asm"]["ua"]).apply(null, arguments)
};
var _avcodec_register_all = Module["_avcodec_register_all"] = function () {
   return (_avcodec_register_all = Module["_avcodec_register_all"] = Module["asm"]["wa"]).apply(null, arguments)
};
var _avcodec_find_decoder_by_name = Module["_avcodec_find_decoder_by_name"] = function () {
   return (_avcodec_find_decoder_by_name = Module["_avcodec_find_decoder_by_name"] = Module["asm"]["xa"]).apply(null, arguments)
};
var _av_free = Module["_av_free"] = function () {
   return (_av_free = Module["_av_free"] = Module["asm"]["ya"]).apply(null, arguments)
};
var _av_malloc = Module["_av_malloc"] = function () {
   return (_av_malloc = Module["_av_malloc"] = Module["asm"]["za"]).apply(null, arguments)
};
var _av_init_packet = Module["_av_init_packet"] = function () {
   return (_av_init_packet = Module["_av_init_packet"] = Module["asm"]["Aa"]).apply(null, arguments)
};
var _av_free_packet = Module["_av_free_packet"] = function () {
   return (_av_free_packet = Module["_av_free_packet"] = Module["asm"]["Ba"]).apply(null, arguments)
};
var _av_dict_set = Module["_av_dict_set"] = function () {
   return (_av_dict_set = Module["_av_dict_set"] = Module["asm"]["Ca"]).apply(null, arguments)
};
var _avpicture_fill = Module["_avpicture_fill"] = function () {
   return (_avpicture_fill = Module["_avpicture_fill"] = Module["asm"]["Da"]).apply(null, arguments)
};
var _avpicture_get_size = Module["_avpicture_get_size"] = function () {
   return (_avpicture_get_size = Module["_avpicture_get_size"] = Module["asm"]["Ea"]).apply(null, arguments)
};
var _av_image_get_buffer_size = Module["_av_image_get_buffer_size"] = function () {
   return (_av_image_get_buffer_size = Module["_av_image_get_buffer_size"] = Module["asm"]["Fa"]).apply(null, arguments)
};
var ___errno_location = Module["___errno_location"] = function () {
   return (___errno_location = Module["___errno_location"] = Module["asm"]["Ga"]).apply(null, arguments)
};
var _av_get_cpu_flags = Module["_av_get_cpu_flags"] = function () {
   return (_av_get_cpu_flags = Module["_av_get_cpu_flags"] = Module["asm"]["Ha"]).apply(null, arguments)
};
var _av_image_fill_arrays = Module["_av_image_fill_arrays"] = function () {
   return (_av_image_fill_arrays = Module["_av_image_fill_arrays"] = Module["asm"]["Ia"]).apply(null, arguments)
};
var _malloc = Module["_malloc"] = function () {
   return (_malloc = Module["_malloc"] = Module["asm"]["Ja"]).apply(null, arguments)
};
var _sws_scale = Module["_sws_scale"] = function () {
   return (_sws_scale = Module["_sws_scale"] = Module["asm"]["Ka"]).apply(null, arguments)
};
var _sws_getContext = Module["_sws_getContext"] = function () {
   return (_sws_getContext = Module["_sws_getContext"] = Module["asm"]["La"]).apply(null, arguments)
};
var _av_register_all = Module["_av_register_all"] = function () {
   return (_av_register_all = Module["_av_register_all"] = Module["asm"]["Ma"]).apply(null, arguments)
};
var _avformat_open_input = Module["_avformat_open_input"] = function () {
   return (_avformat_open_input = Module["_avformat_open_input"] = Module["asm"]["Na"]).apply(null, arguments)
};
var _htons = Module["_htons"] = function () {
   return (_htons = Module["_htons"] = Module["asm"]["Oa"]).apply(null, arguments)
};
var _ntohs = Module["_ntohs"] = function () {
   return (_ntohs = Module["_ntohs"] = Module["asm"]["Pa"]).apply(null, arguments)
};
var __get_tzname = Module["__get_tzname"] = function () {
   return (__get_tzname = Module["__get_tzname"] = Module["asm"]["Qa"]).apply(null, arguments)
};
var __get_daylight = Module["__get_daylight"] = function () {
   return (__get_daylight = Module["__get_daylight"] = Module["asm"]["Ra"]).apply(null, arguments)
};
var __get_timezone = Module["__get_timezone"] = function () {
   return (__get_timezone = Module["__get_timezone"] = Module["asm"]["Sa"]).apply(null, arguments)
};
var _htonl = Module["_htonl"] = function () {
   return (_htonl = Module["_htonl"] = Module["asm"]["Ta"]).apply(null, arguments)
};
var stackSave = Module["stackSave"] = function () {
   return (stackSave = Module["stackSave"] = Module["asm"]["Ua"]).apply(null, arguments)
};
var stackRestore = Module["stackRestore"] = function () {
   return (stackRestore = Module["stackRestore"] = Module["asm"]["Va"]).apply(null, arguments)
};
var stackAlloc = Module["stackAlloc"] = function () {
   return (stackAlloc = Module["stackAlloc"] = Module["asm"]["Wa"]).apply(null, arguments)
};
var _memalign = Module["_memalign"] = function () {
   return (_memalign = Module["_memalign"] = Module["asm"]["Xa"]).apply(null, arguments)
};
var _ff_h264_cabac_tables = Module["_ff_h264_cabac_tables"] = 426101;
Module["ccall"] = ccall;
Module["cwrap"] = cwrap;
Module["setValue"] = setValue;
Module["getValue"] = getValue;
Module["writeArrayToMemory"] = writeArrayToMemory;
Module["FS"] = FS;
var calledRun;

function ExitStatus(status) {
   this.name = "ExitStatus";
   this.message = "Program terminated with exit(" + status + ")";
   this.status = status
}
dependenciesFulfilled = function runCaller() {
   if (!calledRun) run();
   if (!calledRun) dependenciesFulfilled = runCaller
};

function run(args) {
   args = args || arguments_;
   if (runDependencies > 0) {
      return
   }
   preRun();
   if (runDependencies > 0) {
      return
   }

   function doRun() {
      if (calledRun) return;
      calledRun = true;
      Module["calledRun"] = true;
      if (ABORT) return;
      initRuntime();
      if (Module["onRuntimeInitialized"]) Module["onRuntimeInitialized"]();
      postRun()
   }
   if (Module["setStatus"]) {
      Module["setStatus"]("Running...");
      setTimeout(function () {
         setTimeout(function () {
            Module["setStatus"]("")
         }, 1);
         doRun()
      }, 1)
   } else {
      doRun()
   }
}
Module["run"] = run;

function exit(status, implicit) {
   EXITSTATUS = status;
   if (keepRuntimeAlive()) {} else {
      exitRuntime()
   }
   procExit(status)
}

function procExit(code) {
   EXITSTATUS = code;
   if (!keepRuntimeAlive()) {
      if (Module["onExit"]) Module["onExit"](code);
      ABORT = true
   }
   quit_(code, new ExitStatus(code))
}
if (Module["preInit"]) {
   if (typeof Module["preInit"] == "function") Module["preInit"] = [Module["preInit"]];
   while (Module["preInit"].length > 0) {
      Module["preInit"].pop()()
   }
}
run();