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// Copyright 2017 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// Flags: --allow-natives-syntax
'use strict'
// Without .toJSON method.
assertEquals(undefined, BigInt.prototype.toJSON);
assertThrows(() => JSON.stringify(42n), TypeError);
assertThrows(() => JSON.stringify(Object(42n)), TypeError);
// With .toJSON method that returns a string.
BigInt.prototype.toJSON = function() {
assertEquals("bigint", typeof this);
return String(this);
}
assertEquals("\"42\"", JSON.stringify(42n));
BigInt.prototype.toJSON = function() {
assertEquals("object", typeof this);
return String(this);
}
assertEquals("\"42\"", JSON.stringify(Object(42n)));
// With .toJSON method that returns a BigInt primitive.
BigInt.prototype.toJSON = function() {return this};
assertThrows(() => JSON.stringify(42n), TypeError);
assertThrows(() => JSON.stringify(Object(42n)), TypeError);
// With .toJSON method that returns a BigInt object.
BigInt.prototype.toJSON = function() {return Object(this)};
assertThrows(() => JSON.stringify(42n), TypeError);
assertThrows(() => JSON.stringify(Object(42n)), TypeError);
// Without .toJSON method but with a replacer returning a string.
delete BigInt.prototype.toJSON;
let replacer;
replacer = function(k, v) {
assertEquals("bigint", typeof v);
assertTrue(42n == v);
return "43";
}
assertEquals("\"43\"", JSON.stringify(42n, replacer));
replacer = function(k, v) {
assertEquals("object", typeof v);
assertTrue(42n == v);
return "43";
}
assertEquals("\"43\"", JSON.stringify(Object(42n), replacer));
// Without .toJSON method but with a replacer returning a BigInt primitive.
assertEquals(undefined, BigInt.prototype.toJSON);
replacer = () => 43n;
assertThrows(() => JSON.stringify(42n, replacer), TypeError);
assertThrows(() => JSON.stringify(Object(42n), replacer), TypeError);
// Without .toJSON method but with a replacer returning a BigInt object.
assertEquals(undefined, BigInt.prototype.toJSON);
replacer = () => Object(43n);
assertThrows(() => JSON.stringify(42n, replacer), TypeError);
assertThrows(() => JSON.stringify(Object(42n), replacer), TypeError);
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