v0.1.26910 Sep 2026·Rendering, JavaScript & JIT

The Reflect toolkit validates its target like the standard

Another corner of JavaScript's built-in tools brought in line with the standard. The Reflect toolkit, which programs use to inspect and change objects in a controlled way, now reports a clear error the moment one of its operations is aimed at something that is not an object, exactly as every other browser does, instead of quietly doing nothing or the wrong thing. This covers reading, checking, changing, defining and removing properties, and reading or adjusting an object's prototype and whether it can grow. The toolkit also now identifies itself by name when inspected. Code that was already correct is unchanged. The JavaScript language aspect moves 95 to 96; 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

What changed 3 changes

JavaScript & JIT	Reading and checking properties reject a non-object. When a program uses the controlled toolkit to read a property, ask whether one exists, or list what an object has, aiming it at a plain number, text, or other non-object now reports a clear error the way the standard requires, instead of silently answering as if nothing were wrong.
JavaScript & JIT	Changing, defining and removing properties do the same. The operations that set, define, or delete a property, and those that read or adjust an object's prototype or whether it can still grow, now also reject a non-object target with a clear error rather than quietly doing nothing.
Rendering	The toolkit identifies itself by name. Inspecting what kind of thing the toolkit is now returns its proper name, so code that checks this recognizes it correctly.