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31 lines
947 B
JavaScript
31 lines
947 B
JavaScript
// Copyright (C) 2019 Aleksey Shvayka. 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-json.stringify
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description: >
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Array proxy replacer serves as a filter of object keys.
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info: |
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JSON.stringify ( value [ , replacer [ , space ] ] )
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[...]
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4. If Type(replacer) is Object, then
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a. If IsCallable(replacer) is true, then
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i. Let ReplacerFunction be replacer.
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b. Else,
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i. Let isArray be ? IsArray(replacer).
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IsArray ( argument )
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[...]
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3. If argument is a Proxy exotic object, then
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a. If argument.[[ProxyHandler]] is null, throw a TypeError exception.
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b. Let target be argument.[[ProxyTarget]].
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c. Return ? IsArray(target).
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features: [Proxy]
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---*/
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var replacer = new Proxy(['b'], {});
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assert.sameValue(JSON.stringify({a: 1, b: 2}, replacer), '{"b":2}');
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assert.sameValue(JSON.stringify({b: {a: 3, b: 4}}, replacer), '{"b":{"b":4}}');
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