main
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Last change
on this file was d565449, checked in by stefan toskovski <stefantoska84@…>, 4 weeks ago |
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Update repo after prototype presentation
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File size:
389 bytes
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| [d565449] | 1 | 'use strict';
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| 2 |
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| 3 | var KeyForSymbol = require('./KeyForSymbol');
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| 4 | var Type = require('./Type');
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| 5 |
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| 6 | // https://262.ecma-international.org/14.0/#sec-canbeheldweakly
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| 7 |
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| 8 | module.exports = function CanBeHeldWeakly(v) {
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| 9 | if (Type(v) === 'Object') {
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| 10 | return true; // step 1
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| 11 | }
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| 12 | if (typeof v === 'symbol' && typeof KeyForSymbol(v) === 'undefined') {
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| 13 | return true; // step 2
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| 14 | }
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| 15 | return false; // step 3
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| 16 | };
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