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- 'use strict';
- var ArrayBufferViewCore = require('../internals/array-buffer-view-core');
- var global = require('../internals/global');
- var fails = require('../internals/fails');
- var aFunction = require('../internals/a-function');
- var toLength = require('../internals/to-length');
- var internalSort = require('../internals/array-sort');
- var FF = require('../internals/engine-ff-version');
- var IE_OR_EDGE = require('../internals/engine-is-ie-or-edge');
- var V8 = require('../internals/engine-v8-version');
- var WEBKIT = require('../internals/engine-webkit-version');
-
- var aTypedArray = ArrayBufferViewCore.aTypedArray;
- var exportTypedArrayMethod = ArrayBufferViewCore.exportTypedArrayMethod;
- var Uint16Array = global.Uint16Array;
- var nativeSort = Uint16Array && Uint16Array.prototype.sort;
-
- // WebKit
- var ACCEPT_INCORRECT_ARGUMENTS = !!nativeSort && !fails(function () {
- var array = new Uint16Array(2);
- array.sort(null);
- array.sort({});
- });
-
- var STABLE_SORT = !!nativeSort && !fails(function () {
- // feature detection can be too slow, so check engines versions
- if (V8) return V8 < 74;
- if (FF) return FF < 67;
- if (IE_OR_EDGE) return true;
- if (WEBKIT) return WEBKIT < 602;
-
- var array = new Uint16Array(516);
- var expected = Array(516);
- var index, mod;
-
- for (index = 0; index < 516; index++) {
- mod = index % 4;
- array[index] = 515 - index;
- expected[index] = index - 2 * mod + 3;
- }
-
- array.sort(function (a, b) {
- return (a / 4 | 0) - (b / 4 | 0);
- });
-
- for (index = 0; index < 516; index++) {
- if (array[index] !== expected[index]) return true;
- }
- });
-
- var getSortCompare = function (comparefn) {
- return function (x, y) {
- if (comparefn !== undefined) return +comparefn(x, y) || 0;
- // eslint-disable-next-line no-self-compare -- NaN check
- if (y !== y) return -1;
- // eslint-disable-next-line no-self-compare -- NaN check
- if (x !== x) return 1;
- if (x === 0 && y === 0) return 1 / x > 0 && 1 / y < 0 ? 1 : -1;
- return x > y;
- };
- };
-
- // `%TypedArray%.prototype.sort` method
- // https://tc39.es/ecma262/#sec-%typedarray%.prototype.sort
- exportTypedArrayMethod('sort', function sort(comparefn) {
- var array = this;
- if (comparefn !== undefined) aFunction(comparefn);
- if (STABLE_SORT) return nativeSort.call(array, comparefn);
-
- aTypedArray(array);
- var arrayLength = toLength(array.length);
- var items = Array(arrayLength);
- var index;
-
- for (index = 0; index < arrayLength; index++) {
- items[index] = array[index];
- }
-
- items = internalSort(array, getSortCompare(comparefn));
-
- for (index = 0; index < arrayLength; index++) {
- array[index] = items[index];
- }
-
- return array;
- }, !STABLE_SORT || ACCEPT_INCORRECT_ARGUMENTS);
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