mirror of https://github.com/tc39/test262.git
24 lines
880 B
JavaScript
24 lines
880 B
JavaScript
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// Copyright (C) 2016 the V8 project authors. All rights reserved.
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// This code is governed by the BSD license found in the LICENSE file.
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/*---
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esid: sec-symbol.for
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es6id: 19.4.2.1
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description: Retrieval of previously-created value
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info: >
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1. Let stringKey be ? ToString(key).
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2. For each element e of the GlobalSymbolRegistry List,
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a. If SameValue(e.[[Key]], stringKey) is true, return e.[[Symbol]].
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3. Assert: GlobalSymbolRegistry does not currently contain an entry for
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stringKey.
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4. Let newSymbol be a new unique Symbol value whose [[Description]] value
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is stringKey.
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5. Append the Record { [[Key]]: stringKey, [[Symbol]]: newSymbol } to the
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GlobalSymbolRegistry List.
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6. Return newSymbol.
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---*/
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var canonical = Symbol.for('s');
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assert.sameValue(typeof canonical, 'symbol');
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assert.sameValue(canonical, Symbol.for('s'));
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