Constnium/node_modules/es-abstract/2021/thisSymbolValue.js
2022-06-23 02:27:43 +02:00

19 lines
514 B
JavaScript

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