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20 lines
805 B
20 lines
805 B
var DESCRIPTORS = require('../internals/descriptors'); |
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var IE8_DOM_DEFINE = require('../internals/ie8-dom-define'); |
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var anObject = require('../internals/an-object'); |
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var toPrimitive = require('../internals/to-primitive'); |
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var nativeDefineProperty = Object.defineProperty; |
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// `Object.defineProperty` method |
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// https://tc39.github.io/ecma262/#sec-object.defineproperty |
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exports.f = DESCRIPTORS ? nativeDefineProperty : function defineProperty(O, P, Attributes) { |
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anObject(O); |
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P = toPrimitive(P, true); |
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anObject(Attributes); |
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if (IE8_DOM_DEFINE) try { |
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return nativeDefineProperty(O, P, Attributes); |
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} catch (error) { /* empty */ } |
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if ('get' in Attributes || 'set' in Attributes) throw TypeError('Accessors not supported'); |
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if ('value' in Attributes) O[P] = Attributes.value; |
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return O; |
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};
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