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