8 commits

Author	SHA1	Message	Date
Aliaksandr Kalenik	451c947c3f	LibJS: Fast-path own-property enumeration and reduce descriptor lookups ... Before this change, PropertyNameIterator (used by for..in) and `Object::enumerable_own_property_names()` (used by `Object.keys()`, `Object.values()`, and `Object.entries()`) enumerated an object's own enumerable properties exactly as the spec prescribes: - Call `internal_own_property_keys()`, allocating a list of JS::Value keys. - For each key, call internal_get_own_property() to obtain a descriptor and check `[[Enumerable]]`. While that is required in the general case (e.g. for Proxy objects or platform/exotic objects that override `[[OwnPropertyKeys]]`), it's overkill for ordinary JS objects that store their own properties in the shape table and indexed-properties storage. This change introduces `for_each_own_property_with_enumerability()`, which, for objects where `eligible_for_own_property_enumeration_fast_path()` is `true`, lets us read the enumerability directly from shape metadata (and from indexed-properties storage) without a per-property descriptor lookup. When we cannot avoid `internal_get_own_property()`, we still benefit by skipping the temporary `Vector<Value>` of keys and avoiding the unnecessary round-trip between PropertyKey and Value.	2025-09-21 15:06:32 +02:00
Timothy Flynn	93712b24bf	Everywhere: Hoist the Libraries folder to the top-level	2024-11-10 12:50:45 +01:00
Andreas Kling	13d7c09125	Libraries: Move to Userland/Libraries/	2021-01-12 12:17:46 +01:00
Matthew Olsson	119386ffb0	LibJS: Add tests for symbol object integration	2020-07-09 23:33:00 +02:00
Matthew Olsson	1ef573eb30	LibJS: Indent tests with 4 spaces instead of 2	2020-07-06 23:40:35 +02:00
Matthew Olsson	6d58c48c2f	test-js: Use prettier and format all files	2020-07-06 23:40:35 +02:00
Matthew Olsson	3f97d75778	LibJS: Convert most builtin tests to new system	2020-07-06 23:40:35 +02:00
Matthew Olsson	4c48c9d69d	LibJS: Reorganize tests into subfolders	2020-07-03 19:30:13 +02:00

Renamed from Libraries/LibJS/Tests/Object.entries.js (Browse further)