v0.1.27010 Sep 2026·Rendering
Bound functions build objects the way the standard describes
Bound functions, a core JavaScript building block, now behave the way the standard describes. When you lock in a function's context or some of its arguments ahead of time and then use the result with new to build an object, it now works, builds the object correctly, and the object recognizes what it was built from. This holds even when several of these are layered together, and when objects are built through the reflection tools. Locking arguments onto something that is not a function now reports a clear error instead of appearing to succeed. Code that was already correct is unchanged. The JavaScript language aspect moves 96 to 97; the overall platform score stays at 70.
Parity with the reference browser
74overall, as of v0.1.355
Web APIs / DOM surface53
Security architecture66
GPU / graphics acceleration68
DevTools / extensions72
Networking85
Media85
Accessibility85
Real-world site compatibility99
HTML parsing100
CSS parsing + selectors100
Layout: block / flex / grid / tables / writing-modes100
Paint + visual100
JavaScript language100
JavaScript performance (JIT)100
HTML parsing100