| 1 | 'use strict';
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| 2 |
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| 3 | if (!process.version ||
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| 4 | process.version.indexOf('v0.') === 0 ||
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| 5 | process.version.indexOf('v1.') === 0 && process.version.indexOf('v1.8.') !== 0) {
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| 6 | module.exports = nextTick;
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| 7 | } else {
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| 8 | module.exports = process.nextTick;
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| 9 | }
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| 10 |
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| 11 | function nextTick(fn, arg1, arg2, arg3) {
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| 12 | if (typeof fn !== 'function') {
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| 13 | throw new TypeError('"callback" argument must be a function');
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| 14 | }
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| 15 | var len = arguments.length;
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| 16 | var args, i;
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| 17 | switch (len) {
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| 18 | case 0:
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| 19 | case 1:
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| 20 | return process.nextTick(fn);
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| 21 | case 2:
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| 22 | return process.nextTick(function afterTickOne() {
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| 23 | fn.call(null, arg1);
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| 24 | });
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| 25 | case 3:
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| 26 | return process.nextTick(function afterTickTwo() {
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| 27 | fn.call(null, arg1, arg2);
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| 28 | });
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| 29 | case 4:
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| 30 | return process.nextTick(function afterTickThree() {
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| 31 | fn.call(null, arg1, arg2, arg3);
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| 32 | });
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| 33 | default:
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| 34 | args = new Array(len - 1);
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| 35 | i = 0;
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| 36 | while (i < args.length) {
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| 37 | args[i++] = arguments[i];
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| 38 | }
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| 39 | return process.nextTick(function afterTick() {
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| 40 | fn.apply(null, args);
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| 41 | });
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| 42 | }
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| 43 | }
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