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// Copyright (C) 2015 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
es6id: 23.1.3.5
description: >
Throws a TypeError if `this` is a WeakMap object.
info: |
Map.prototype.forEach ( callbackfn [ , thisArg ] )
...
3. If M does not have a [[MapData]] internal slot, throw a TypeError
exception.
...
features: [WeakMap]
---*/
assert.throws(TypeError, function() {
Map.prototype.forEach.call(new WeakMap(), function() {});
});
assert.throws(TypeError, function() {
var m = new Map();
m.forEach.call(new WeakMap(), function() {});
});
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