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Configuration error
Configuration error
| ; | |
| var hasPropertyDescriptors = require('has-property-descriptors'); | |
| var GetIntrinsic = require('get-intrinsic'); | |
| var $defineProperty = hasPropertyDescriptors() && GetIntrinsic('%Object.defineProperty%', true); | |
| var hasArrayLengthDefineBug = hasPropertyDescriptors.hasArrayLengthDefineBug(); | |
| // eslint-disable-next-line global-require | |
| var isArray = hasArrayLengthDefineBug && require('../helpers/IsArray'); | |
| var callBound = require('call-bind/callBound'); | |
| var $isEnumerable = callBound('Object.prototype.propertyIsEnumerable'); | |
| // eslint-disable-next-line max-params | |
| module.exports = function DefineOwnProperty(IsDataDescriptor, SameValue, FromPropertyDescriptor, O, P, desc) { | |
| if (!$defineProperty) { | |
| if (!IsDataDescriptor(desc)) { | |
| // ES3 does not support getters/setters | |
| return false; | |
| } | |
| if (!desc['[[Configurable]]'] || !desc['[[Writable]]']) { | |
| return false; | |
| } | |
| // fallback for ES3 | |
| if (P in O && $isEnumerable(O, P) !== !!desc['[[Enumerable]]']) { | |
| // a non-enumerable existing property | |
| return false; | |
| } | |
| // property does not exist at all, or exists but is enumerable | |
| var V = desc['[[Value]]']; | |
| // eslint-disable-next-line no-param-reassign | |
| O[P] = V; // will use [[Define]] | |
| return SameValue(O[P], V); | |
| } | |
| if ( | |
| hasArrayLengthDefineBug | |
| && P === 'length' | |
| && '[[Value]]' in desc | |
| && isArray(O) | |
| && O.length !== desc['[[Value]]'] | |
| ) { | |
| // eslint-disable-next-line no-param-reassign | |
| O.length = desc['[[Value]]']; | |
| return O.length === desc['[[Value]]']; | |
| } | |
| $defineProperty(O, P, FromPropertyDescriptor(desc)); | |
| return true; | |
| }; | |