Strict mode Passingnon-Strict mode Passing
Features:
- Set
// 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.keys description: > Throws a TypeError if `this` is a Set object. info: | Map.prototype.keys () 1. Let M be the this value. 2. Return CreateMapIterator(M, "key"). 23.1.5.1 CreateMapIterator Abstract Operation ... 2. If map does not have a [[MapData]] internal slot, throw a TypeError exception. ... features: [Set] ---*/ assert.throws(TypeError, function() { Map.prototype.keys.call(new Set()); }); assert.throws(TypeError, function() { var m = new Map(); m.keys.call(new Set()); });