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LibJS: Dont try to serialize symbol-keyed properties

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As per the specification: "All Symbol-keyed properties will be
completely ignored, even when using the replacer function."
This commit is contained in:
Idan Horowitz 2021-04-16 13:02:51 +03:00 • committed by Linus Groh
parent fff7aceb9d
commit 223472c57f
2 changed files with 9 additions and 0 deletions
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2
Userland/Libraries/LibJS/Runtime/JSONObject.cpp
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@ -215,6 +215,8 @@ String JSONObject::serialize_json_object(GlobalObject& global_object, StringifyS
Vector<String> property_strings; Vector<String> property_strings;
auto process_property = [&](const PropertyName& key) { auto process_property = [&](const PropertyName& key) {
if (key.is_symbol())
return;
auto serialized_property_string = serialize_json_property(global_object, state, key, &object); auto serialized_property_string = serialize_json_property(global_object, state, key, &object);
if (vm.exception()) if (vm.exception())
return; return;

7
Userland/Libraries/LibJS/Tests/builtins/JSON/JSON.stringify.js
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@ -43,6 +43,13 @@ describe("correct behavior", () => {
Object.defineProperty(o, "baz", { value: "qux", enumerable: false }); Object.defineProperty(o, "baz", { value: "qux", enumerable: false });
expect(JSON.stringify(o)).toBe('{"foo":"bar"}'); expect(JSON.stringify(o)).toBe('{"foo":"bar"}');
}); });
test("ignores symbol properties", () => {
let o = { foo: "bar" };
let sym = Symbol("baz");
o[sym] = "qux";
expect(JSON.stringify(o)).toBe('{"foo":"bar"}');
});
}); });
describe("errors", () => { describe("errors", () => {