// Copyright 2015 Mike Pennisi. All rights reserved. // This code is governed by the BSD license found in the LICENSE file. /*--- es6id: 8.1.1.2.1 description: > Behavior when accessing `Symbol.unscopables` property value throws an error info: > [...] 6. If the withEnvironment flag of envRec is false, return true. 7. Let unscopables be Get(bindings, @@unscopables). 8. ReturnIfAbrupt(unscopables). ES6: 13.11.7 (The `with` Statement) Runtime Semantics: Evaluation [...] 6. Set the withEnvironment flag of newEnv’s EnvironmentRecord to true. [...] flags: [noStrict] features: [Symbol.unscopables] ---*/ var env = { x: 86 }; Object.defineProperty(env, Symbol.unscopables, { get: function() { throw new Test262Error(); } }); with (env) { assert.throws(Test262Error, function() { void x; }); }