// 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: > Verify the parameters order on the given callback. info: | Map.prototype.forEach ( callbackfn [ , thisArg ] ) ... 5. If thisArg was supplied, let T be thisArg; else let T be undefined. 6. Let entries be the List that is the value of M’s [[MapData]] internal slot. 7. Repeat for each Record {[[key]], [[value]]} e that is an element of entries, in original key insertion order a. If e.[[key]] is not empty, then i. Let funcResult be Call(callbackfn, T, «e.[[value]], e.[[key]], M»). ... ---*/ var map = new Map(); map.set('foo', 42); map.set('bar', 'baz'); var results = []; var callback = function(value, key, thisArg) { results.push({ value: value, key: key, thisArg: thisArg }); }; map.forEach(callback); assert.sameValue(results[0].value, 42); assert.sameValue(results[0].key, 'foo'); assert.sameValue(results[0].thisArg, map); assert.sameValue(results[1].value, 'baz'); assert.sameValue(results[1].key, 'bar'); assert.sameValue(results[1].thisArg, map); assert.sameValue(results.length, 2);