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Last change
on this file was 6a3a178, checked in by Ema <ema_spirova@…>, 3 years ago |
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initial commit
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769 bytes
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| 1 | 'use strict';
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| 2 | var $ = require('../internals/export');
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| 3 | var $findIndex = require('../internals/array-iteration').findIndex;
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| 4 | var addToUnscopables = require('../internals/add-to-unscopables');
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| 5 |
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| 6 | var FIND_INDEX = 'findIndex';
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| 7 | var SKIPS_HOLES = true;
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| 8 |
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| 9 | // Shouldn't skip holes
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| 10 | if (FIND_INDEX in []) Array(1)[FIND_INDEX](function () { SKIPS_HOLES = false; });
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| 11 |
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| 12 | // `Array.prototype.findIndex` method
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| 13 | // https://tc39.es/ecma262/#sec-array.prototype.findindex
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| 14 | $({ target: 'Array', proto: true, forced: SKIPS_HOLES }, {
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| 15 | findIndex: function findIndex(callbackfn /* , that = undefined */) {
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| 16 | return $findIndex(this, callbackfn, arguments.length > 1 ? arguments[1] : undefined);
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| 17 | }
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| 18 | });
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| 19 |
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| 20 | // https://tc39.es/ecma262/#sec-array.prototype-@@unscopables
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| 21 | addToUnscopables(FIND_INDEX);
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