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19 lines
514 B
19 lines
514 B
'use strict'; |
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var callBound = require('call-bind/callBound'); |
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var $SymbolValueOf = callBound('Symbol.prototype.valueOf', true); |
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var Type = require('./Type'); |
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// https://262.ecma-international.org/9.0/#sec-thissymbolvalue |
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module.exports = function thisSymbolValue(value) { |
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if (!$SymbolValueOf) { |
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throw new SyntaxError('Symbols are not supported; thisSymbolValue requires that `value` be a Symbol or a Symbol object'); |
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} |
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if (Type(value) === 'Symbol') { |
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return value; |
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} |
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return $SymbolValueOf(value); |
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};
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