eewing
19 lines
504 B
JavaScript
19 lines
504 B
JavaScript
'use strict';
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var GetIntrinsic = require('get-intrinsic');
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var $preventExtensions = GetIntrinsic('%Object.preventExtensions%', true);
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var $isExtensible = GetIntrinsic('%Object.isExtensible%', true);
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var isPrimitive = require('../helpers/isPrimitive');
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// https://262.ecma-international.org/6.0/#sec-isextensible-o
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module.exports = $preventExtensions
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? function IsExtensible(obj) {
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return !isPrimitive(obj) && $isExtensible(obj);
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}
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: function IsExtensible(obj) {
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return !isPrimitive(obj);
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};
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