[79a0317] | 1 | 'use strict';
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| 2 | var DESCRIPTORS = require('../internals/descriptors');
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| 3 | var IE8_DOM_DEFINE = require('../internals/ie8-dom-define');
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| 4 | var V8_PROTOTYPE_DEFINE_BUG = require('../internals/v8-prototype-define-bug');
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| 5 | var anObject = require('../internals/an-object');
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| 6 | var toPropertyKey = require('../internals/to-property-key');
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| 7 |
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| 8 | var $TypeError = TypeError;
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| 9 | // eslint-disable-next-line es/no-object-defineproperty -- safe
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| 10 | var $defineProperty = Object.defineProperty;
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| 11 | // eslint-disable-next-line es/no-object-getownpropertydescriptor -- safe
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| 12 | var $getOwnPropertyDescriptor = Object.getOwnPropertyDescriptor;
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| 13 | var ENUMERABLE = 'enumerable';
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| 14 | var CONFIGURABLE = 'configurable';
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| 15 | var WRITABLE = 'writable';
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| 16 |
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| 17 | // `Object.defineProperty` method
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| 18 | // https://tc39.es/ecma262/#sec-object.defineproperty
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| 19 | exports.f = DESCRIPTORS ? V8_PROTOTYPE_DEFINE_BUG ? function defineProperty(O, P, Attributes) {
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| 20 | anObject(O);
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| 21 | P = toPropertyKey(P);
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| 22 | anObject(Attributes);
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| 23 | if (typeof O === 'function' && P === 'prototype' && 'value' in Attributes && WRITABLE in Attributes && !Attributes[WRITABLE]) {
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| 24 | var current = $getOwnPropertyDescriptor(O, P);
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| 25 | if (current && current[WRITABLE]) {
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| 26 | O[P] = Attributes.value;
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| 27 | Attributes = {
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| 28 | configurable: CONFIGURABLE in Attributes ? Attributes[CONFIGURABLE] : current[CONFIGURABLE],
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| 29 | enumerable: ENUMERABLE in Attributes ? Attributes[ENUMERABLE] : current[ENUMERABLE],
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| 30 | writable: false
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| 31 | };
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| 32 | }
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| 33 | } return $defineProperty(O, P, Attributes);
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| 34 | } : $defineProperty : function defineProperty(O, P, Attributes) {
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| 35 | anObject(O);
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| 36 | P = toPropertyKey(P);
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| 37 | anObject(Attributes);
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| 38 | if (IE8_DOM_DEFINE) try {
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| 39 | return $defineProperty(O, P, Attributes);
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| 40 | } catch (error) { /* empty */ }
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| 41 | if ('get' in Attributes || 'set' in Attributes) throw new $TypeError('Accessors not supported');
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| 42 | if ('value' in Attributes) O[P] = Attributes.value;
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| 43 | return O;
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| 44 | };
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