Strict mode Passingnon-Strict mode Passing
Features:
- ∅
// 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-set.prototype.forEach description: > Set.prototype.forEach ( callbackfn [ , thisArg ] ) ... 7. Repeat for each e that is an element of entries, in original insertion order a. If e is not empty, then i. Let funcResult be Call(callbackfn, T, «e, e, S»). ii. ReturnIfAbrupt(funcResult). ... NOTE: ... a value will be revisited if it is deleted after it has been visited and then re-added before the forEach call completes. ... ---*/ var s = new Set([1, 2, 3]); var expects = [1, 2, 3, 1]; s.forEach(function(value, entry, set) { var expect = expects.shift(); // Delete `1` after visit if (value === 2) { set.delete(1); } // Re-add `1` if (value === 3) { set.add(1); } assert.sameValue(value, expect); assert.sameValue(entry, expect); assert.sameValue(set, s); }); assert.sameValue(expects.length, 0, "The value of `expects.length` is `0`");