36 lines
1.2 KiB
JavaScript
36 lines
1.2 KiB
JavaScript
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"use strict";
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var util = require("./util");
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var schedule;
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var noAsyncScheduler = function() {
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throw new Error("No async scheduler available\u000a\u000a See http://goo.gl/MqrFmX\u000a");
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};
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if (util.isNode && typeof MutationObserver === "undefined") {
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var GlobalSetImmediate = global.setImmediate;
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var ProcessNextTick = process.nextTick;
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schedule = util.isRecentNode
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? function(fn) { GlobalSetImmediate.call(global, fn); }
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: function(fn) { ProcessNextTick.call(process, fn); };
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} else if ((typeof MutationObserver !== "undefined") &&
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!(typeof window !== "undefined" &&
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window.navigator &&
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window.navigator.standalone)) {
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schedule = function(fn) {
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var div = document.createElement("div");
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var observer = new MutationObserver(fn);
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observer.observe(div, {attributes: true});
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return function() { div.classList.toggle("foo"); };
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};
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schedule.isStatic = true;
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} else if (typeof setImmediate !== "undefined") {
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schedule = function (fn) {
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setImmediate(fn);
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};
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} else if (typeof setTimeout !== "undefined") {
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schedule = function (fn) {
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setTimeout(fn, 0);
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};
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} else {
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schedule = noAsyncScheduler;
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}
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module.exports = schedule;
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