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:
536 bytes
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| 1 | 'use strict';
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| 2 |
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| 3 | var $SyntaxError = require('es-errors/syntax');
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| 4 | var callBound = require('call-bind/callBound');
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| 5 |
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| 6 | var $SymbolValueOf = callBound('Symbol.prototype.valueOf', true);
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| 7 |
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| 8 | // https://262.ecma-international.org/15.0/#sec-thissymbolvalue
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| 9 |
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| 10 | module.exports = function ThisSymbolValue(value) {
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| 11 | if (typeof value === 'symbol') {
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| 12 | return value;
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| 13 | }
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| 14 |
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| 15 | if (!$SymbolValueOf) {
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| 16 | throw new $SyntaxError('Symbols are not supported; thisSymbolValue requires that `value` be a Symbol or a Symbol object');
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| 17 | }
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| 18 |
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| 19 | return $SymbolValueOf(value);
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| 20 | };
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