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// 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-serializejsonarray
description: >
Proxy of an array is treated as an array.
info: |
JSON.stringify ( value [ , replacer [ , space ] ] )
[...]
12. Return ? SerializeJSONProperty(the empty String, wrapper).
SerializeJSONProperty ( key, holder )
[...]
10. If Type(value) is Object and IsCallable(value) is false, then
a. Let isArray be ? IsArray(value).
b. If isArray is true, return ? SerializeJSONArray(value).
SerializeJSONArray ( value )
[...]
6. Let len be ? LengthOfArrayLike(value).
7. Let index be 0.
8. Repeat, while index < len
a. Let strP be ? SerializeJSONProperty(! ToString(index), value).
features: [Proxy]
---*/
var arrayProxy = new Proxy([], {
get: function(_target, key) {
if (key === 'length') return 2;
return Number(key);
},
});
assert.sameValue(
JSON.stringify(arrayProxy), '[0,1]', 'proxy for an array'
);
assert.sameValue(
JSON.stringify([[arrayProxy]]), '[[[0,1]]]', 'proxy for an array (nested)'
);
var arrayProxyProxy = new Proxy(arrayProxy, {});
assert.sameValue(
JSON.stringify([[arrayProxyProxy]]),
'[[[0,1]]]',
'proxy for a proxy for an array (nested)'
);
reportCompare(0, 0);