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Commit Description:
merge
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node_modules/next-tick/index.js
| 71 lines
| 1.9 KiB
| application/javascript
| JavascriptLexer
|
| r789 | 'use strict'; | |||
| var callable, byObserver; | ||||
| callable = function (fn) { | ||||
| if (typeof fn !== 'function') throw new TypeError(fn + " is not a function"); | ||||
| return fn; | ||||
| }; | ||||
| byObserver = function (Observer) { | ||||
| var node = document.createTextNode(''), queue, currentQueue, i = 0; | ||||
| new Observer(function () { | ||||
| var callback; | ||||
| if (!queue) { | ||||
| if (!currentQueue) return; | ||||
| queue = currentQueue; | ||||
| } else if (currentQueue) { | ||||
| queue = currentQueue.concat(queue); | ||||
| } | ||||
| currentQueue = queue; | ||||
| queue = null; | ||||
| if (typeof currentQueue === 'function') { | ||||
| callback = currentQueue; | ||||
| currentQueue = null; | ||||
| callback(); | ||||
| return; | ||||
| } | ||||
| node.data = (i = ++i % 2); // Invoke other batch, to handle leftover callbacks in case of crash | ||||
| while (currentQueue) { | ||||
| callback = currentQueue.shift(); | ||||
| if (!currentQueue.length) currentQueue = null; | ||||
| callback(); | ||||
| } | ||||
| }).observe(node, { characterData: true }); | ||||
| return function (fn) { | ||||
| callable(fn); | ||||
| if (queue) { | ||||
| if (typeof queue === 'function') queue = [queue, fn]; | ||||
| else queue.push(fn); | ||||
| return; | ||||
| } | ||||
| queue = fn; | ||||
| node.data = (i = ++i % 2); | ||||
| }; | ||||
| }; | ||||
| module.exports = (function () { | ||||
| // Node.js | ||||
| if ((typeof process === 'object') && process && (typeof process.nextTick === 'function')) { | ||||
| return process.nextTick; | ||||
| } | ||||
| // MutationObserver | ||||
| if ((typeof document === 'object') && document) { | ||||
| if (typeof MutationObserver === 'function') return byObserver(MutationObserver); | ||||
| if (typeof WebKitMutationObserver === 'function') return byObserver(WebKitMutationObserver); | ||||
| } | ||||
| // W3C Draft | ||||
| // http://dvcs.w3.org/hg/webperf/raw-file/tip/specs/setImmediate/Overview.html | ||||
| if (typeof setImmediate === 'function') { | ||||
| return function (cb) { setImmediate(callable(cb)); }; | ||||
| } | ||||
| // Wide available standard | ||||
| if ((typeof setTimeout === 'function') || (typeof setTimeout === 'object')) { | ||||
| return function (cb) { setTimeout(callable(cb), 0); }; | ||||
| } | ||||
| return null; | ||||
| }()); | ||||