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- // shim for using process in browser
- var process = module.exports = {};
- // cached from whatever global is present so that test runners that stub it
- // don't break things. But we need to wrap it in a try catch in case it is
- // wrapped in strict mode code which doesn't define any globals. It's inside a
- // function because try/catches deoptimize in certain engines.
- var cachedSetTimeout;
- var cachedClearTimeout;
- function defaultSetTimout() {
- throw new Error('setTimeout has not been defined');
- }
- function defaultClearTimeout () {
- throw new Error('clearTimeout has not been defined');
- }
- (function () {
- try {
- if (typeof setTimeout === 'function') {
- cachedSetTimeout = setTimeout;
- } else {
- cachedSetTimeout = defaultSetTimout;
- }
- } catch (e) {
- cachedSetTimeout = defaultSetTimout;
- }
- try {
- if (typeof clearTimeout === 'function') {
- cachedClearTimeout = clearTimeout;
- } else {
- cachedClearTimeout = defaultClearTimeout;
- }
- } catch (e) {
- cachedClearTimeout = defaultClearTimeout;
- }
- } ())
- function runTimeout(fun) {
- if (cachedSetTimeout === setTimeout) {
- //normal enviroments in sane situations
- return setTimeout(fun, 0);
- }
- // if setTimeout wasn't available but was latter defined
- if ((cachedSetTimeout === defaultSetTimout || !cachedSetTimeout) && setTimeout) {
- cachedSetTimeout = setTimeout;
- return setTimeout(fun, 0);
- }
- try {
- // when when somebody has screwed with setTimeout but no I.E. maddness
- return cachedSetTimeout(fun, 0);
- } catch(e){
- try {
- // When we are in I.E. but the script has been evaled so I.E. doesn't trust the global object when called normally
- return cachedSetTimeout.call(null, fun, 0);
- } catch(e){
- // same as above but when it's a version of I.E. that must have the global object for 'this', hopfully our context correct otherwise it will throw a global error
- return cachedSetTimeout.call(this, fun, 0);
- }
- }
- }
- function runClearTimeout(marker) {
- if (cachedClearTimeout === clearTimeout) {
- //normal enviroments in sane situations
- return clearTimeout(marker);
- }
- // if clearTimeout wasn't available but was latter defined
- if ((cachedClearTimeout === defaultClearTimeout || !cachedClearTimeout) && clearTimeout) {
- cachedClearTimeout = clearTimeout;
- return clearTimeout(marker);
- }
- try {
- // when when somebody has screwed with setTimeout but no I.E. maddness
- return cachedClearTimeout(marker);
- } catch (e){
- try {
- // When we are in I.E. but the script has been evaled so I.E. doesn't trust the global object when called normally
- return cachedClearTimeout.call(null, marker);
- } catch (e){
- // same as above but when it's a version of I.E. that must have the global object for 'this', hopfully our context correct otherwise it will throw a global error.
- // Some versions of I.E. have different rules for clearTimeout vs setTimeout
- return cachedClearTimeout.call(this, marker);
- }
- }
- }
- var queue = [];
- var draining = false;
- var currentQueue;
- var queueIndex = -1;
- function cleanUpNextTick() {
- if (!draining || !currentQueue) {
- return;
- }
- draining = false;
- if (currentQueue.length) {
- queue = currentQueue.concat(queue);
- } else {
- queueIndex = -1;
- }
- if (queue.length) {
- drainQueue();
- }
- }
- function drainQueue() {
- if (draining) {
- return;
- }
- var timeout = runTimeout(cleanUpNextTick);
- draining = true;
- var len = queue.length;
- while(len) {
- currentQueue = queue;
- queue = [];
- while (++queueIndex < len) {
- if (currentQueue) {
- currentQueue[queueIndex].run();
- }
- }
- queueIndex = -1;
- len = queue.length;
- }
- currentQueue = null;
- draining = false;
- runClearTimeout(timeout);
- }
- process.nextTick = function (fun) {
- var args = new Array(arguments.length - 1);
- if (arguments.length > 1) {
- for (var i = 1; i < arguments.length; i++) {
- args[i - 1] = arguments[i];
- }
- }
- queue.push(new Item(fun, args));
- if (queue.length === 1 && !draining) {
- runTimeout(drainQueue);
- }
- };
- // v8 likes predictible objects
- function Item(fun, array) {
- this.fun = fun;
- this.array = array;
- }
- Item.prototype.run = function () {
- this.fun.apply(null, this.array);
- };
- process.title = 'browser';
- process.browser = true;
- process.env = {};
- process.argv = [];
- process.version = ''; // empty string to avoid regexp issues
- process.versions = {};
- function noop() {}
- process.on = noop;
- process.addListener = noop;
- process.once = noop;
- process.off = noop;
- process.removeListener = noop;
- process.removeAllListeners = noop;
- process.emit = noop;
- process.prependListener = noop;
- process.prependOnceListener = noop;
- process.listeners = function (name) { return [] }
- process.binding = function (name) {
- throw new Error('process.binding is not supported');
- };
- process.cwd = function () { return '/' };
- process.chdir = function (dir) {
- throw new Error('process.chdir is not supported');
- };
- process.umask = function() { return 0; };
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