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rose-ash/lib/js/test262-scoreboard.md
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js-on-sx: native prototypes inherit from Object.prototype
Per ES, every native prototype's [[Prototype]] is Object.prototype
(and Function.prototype.[[Prototype]] is too). Was missing those
links, so Object.prototype.isPrototypeOf(Boolean.prototype)
returned false (the explicit isPrototypeOf walks __proto__, not
the recent fallback). Added 5 dict-set! lines to the post-init.
built-ins/Boolean: 22/27 → 23/27, built-ins/Number: 44/50 → 45/50.
conformance.sh: 148/148.
2026-05-08 10:21:05 +00:00

700 B

test262 scoreboard

Pinned commit: d5e73fc8d2c663554fb72e2380a8c2bc1a318a33 Wall time: 38.2s

Total: 44/50 runnable passed (88.0%). Raw: pass=44 fail=6 skip=0 timeout=0 total=50.

Top failure modes

  • 4x ReferenceError (undefined symbol)
  • 2x SyntaxError (parse/unsupported syntax)

Categories (worst pass-rate first, min 10 runnable)

Category Pass Fail Skip Timeout Total Pass %
built-ins/Object 44 6 0 0 50 88.0%

Per-category top failures (min 10 runnable, worst first)

built-ins/Object (44/50 — 88.0%)

  • 4x ReferenceError (undefined symbol)
  • 2x SyntaxError (parse/unsupported syntax)