Strict mode Passingnon-Strict mode Passing
Features:
- WeakMap
// Copyright (C) 2015 the V8 project authors. All rights reserved. // This code is governed by the BSD license found in the LICENSE file. /*--- esid: sec-map.prototype.clear description: > Throws a TypeError if `this` is a WeakMap object. info: | Map.prototype.clear ( ) 1. Let M be the this value. 2. If Type(M) is not Object, throw a TypeError exception. 3. If M does not have a [[MapData]] internal slot, throw a TypeError exception. ... features: [WeakMap] ---*/ assert.throws(TypeError, function() { Map.prototype.clear.call(new WeakMap()); });