| 1 | 'use strict';
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| 2 | var $ = require('../internals/export');
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| 3 | var DESCRIPTORS = require('../internals/descriptors');
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| 4 | var anObject = require('../internals/an-object');
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| 5 | var toPropertyKey = require('../internals/to-property-key');
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| 6 | var definePropertyModule = require('../internals/object-define-property');
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| 7 | var isCallable = require('../internals/is-callable');
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| 8 | var fails = require('../internals/fails');
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| 9 |
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| 10 | var $TypeError = TypeError;
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| 11 |
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| 12 | // MS Edge has broken Reflect.defineProperty - throwing instead of returning false
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| 13 | var ERROR_INSTEAD_OF_FALSE = fails(function () {
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| 14 | // eslint-disable-next-line es/no-reflect -- required for testing
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| 15 | Reflect.defineProperty(definePropertyModule.f({}, 1, { value: 1 }), 1, { value: 2 });
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| 16 | });
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| 17 |
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| 18 | // `Reflect.defineProperty` method
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| 19 | // https://tc39.es/ecma262/#sec-reflect.defineproperty
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| 20 | $({ target: 'Reflect', stat: true, forced: ERROR_INSTEAD_OF_FALSE, sham: !DESCRIPTORS }, {
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| 21 | defineProperty: function defineProperty(target, propertyKey, attributes) {
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| 22 | anObject(target);
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| 23 | var key = toPropertyKey(propertyKey);
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| 24 | var get, set;
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| 25 | anObject(attributes);
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| 26 | // propagate `ToPropertyDescriptor` errors instead of catching them
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| 27 | if (('get' in attributes || 'set' in attributes) && (
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| 28 | ('get' in attributes && !isCallable(get = attributes.get) && get !== undefined) ||
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| 29 | ('set' in attributes && !isCallable(set = attributes.set) && set !== undefined) ||
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| 30 | ('value' in attributes || 'writable' in attributes)
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| 31 | )) throw new $TypeError('Invalid property descriptor');
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| 32 | try {
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| 33 | definePropertyModule.f(target, key, attributes);
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| 34 | return true;
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| 35 | } catch (error) {
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| 36 | return false;
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| 37 | }
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| 38 | }
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| 39 | });
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