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-weakmap.prototype.set description: Returns `this` when new value is duplicate. info: | WeakMap.prototype.set ( key, value ) 1. Let M be the this value. ... 6. Repeat for each Record {[[key]], [[value]]} p that is an element of entries, a. If p.[[key]] is not empty and SameValue(p.[[key]], key) is true, then i. Set p.[[value]] to value. ii. Return M. ... ---*/ var foo = {}; var map = new WeakMap([ [foo, 1] ]); assert.sameValue(map.set(foo, 1), map, '`map.set(foo, 1)` returns `map`');