Source code
Revision control
Copy as Markdown
Other Tools
// Copyright (C) 2016 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: sec-symbol.keyfor
description: >
Called with Symbol value that does not exist in the global symbol registry
info: |
1. If Type(sym) is not Symbol, throw a TypeError exception.
2. For each element e of the GlobalSymbolRegistry List (see 19.4.2.1),
a. If SameValue(e.[[Symbol]], sym) is true, return e.[[Key]].
3. Assert: GlobalSymbolRegistry does not currently contain an entry for
sym.
4. Return undefined.
features: [Symbol.iterator, Symbol]
---*/
var constructed = Symbol('Symbol.iterator');
assert.sameValue(Symbol.keyFor(constructed), undefined, 'constructed symbol');
assert.sameValue(
Symbol.keyFor(Symbol.iterator), undefined, 'well-known symbol'
);
reportCompare(0, 0);