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LibJS: Let Object::get_own_properties() return both strings and symbols

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The new default return_type argument is GetOwnPropertyReturnType::All,
which returns properties with both string and symbol keys (which is also
the default for [[OwnPropertyKeys]]). This means that in some cases we
need to iterate the ordered property table twice, as we don't store
string and symbol properties separately but symbols must - there's
certainly room for (performance) improvements here. On the other hand
this makes Reflect.ownKeys() return symbol properties now :^)
This commit is contained in:
Linus Groh 2021-04-05 19:17:40 +02:00 • committed by Andreas Kling
parent 1416027486
commit abc7b31079
3 changed files with 38 additions and 20 deletions
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8
Userland/Libraries/LibJS/Tests/builtins/Reflect/Reflect.ownKeys.js
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@ -23,12 +23,14 @@ describe("normal behavior", () => {
});
test("regular object with some properties has own keys", () => {
var objectOwnKeys = Reflect.ownKeys({ foo: "bar", bar: "baz", 0: 42 });
var symbol = Symbol("symbol");
var objectOwnKeys = Reflect.ownKeys({ foo: "bar", [symbol]: "qux", bar: "baz", 0: 42 });
expect(objectOwnKeys instanceof Array).toBeTrue();
expect(objectOwnKeys).toHaveLength(3);
expect(objectOwnKeys).toHaveLength(4);
expect(objectOwnKeys[0]).toBe("0");
expect(objectOwnKeys[1]).toBe("foo");
expect(objectOwnKeys[2]).toBe("bar");
expect(objectOwnKeys[3]).toBe(symbol);
});
test("empty array has only 'length' own key", () => {
@ -38,7 +40,7 @@ describe("normal behavior", () => {
expect(arrayOwnKeys[0]).toBe("length");
});
test("array with some values has 'lenght' and indices own keys", () => {
test("array with some values has 'length' and indices own keys", () => {
var arrayOwnKeys = Reflect.ownKeys(["foo", [], 123, undefined]);
expect(arrayOwnKeys instanceof Array).toBeTrue();
expect(arrayOwnKeys).toHaveLength(5);