// Copyright (C) 2015 the V8 project authors. All rights reserved. // This code is governed by the BSD license found in the LICENSE file. /*--- es6id: 9.5.10 description: > [[Delete]] (P) 8. If trap is undefined, then Return target.[[Delete]](P). flags: [onlyStrict] features: [Reflect] ---*/ var target = { attr: 1 }; var p = new Proxy(target, {}); assert.sameValue(delete p.attr, true); assert.sameValue(delete p.notThere, true); assert.sameValue( Object.getOwnPropertyDescriptor(target, "attr"), undefined ); Object.defineProperty(target, "attr", { configurable: false, enumerable: true, value: 1 }); assert.sameValue(Reflect.deleteProperty(p, "attr"), false);