main
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Last change
on this file since d565449 was d565449, checked in by stefan toskovski <stefantoska84@…>, 4 weeks ago |
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Update repo after prototype presentation
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Property mode
set to
100644
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File size:
555 bytes
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| [d565449] | 1 | 'use strict';
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| 2 |
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| 3 | var hasOwn = require('hasown');
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| 4 |
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| 5 | var hasUnscopables = typeof Symbol === 'function' && typeof Symbol.unscopables === 'symbol';
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| 6 |
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| 7 | var map = hasUnscopables && Array.prototype[Symbol.unscopables];
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| 8 |
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| 9 | var $TypeError = TypeError;
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| 10 |
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| 11 | module.exports = function shimUnscopables(method) {
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| 12 | if (typeof method !== 'string' || !method) {
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| 13 | throw new $TypeError('method must be a non-empty string');
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| 14 | }
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| 15 | if (!hasOwn(Array.prototype, method)) {
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| 16 | throw new $TypeError('method must be on Array.prototype');
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| 17 | }
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| 18 | if (hasUnscopables) {
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| 19 | map[method] = true;
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| 20 | }
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| 21 | };
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