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rose-ash/lib/js/test262-scoreboard.md
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js-on-sx: Object.__callable__ returns this for new Object() no-args
js-new-call Object had set obj.__proto__ correctly, but then the
__callable__ returned a fresh (dict), which js-new-call's "use
returned dict over obj" rule honoured — losing the proto. Added
is-new check (this.__proto__ === Object.prototype) and return
this instead of a new dict when invoked as a constructor with
no/null args. Now new Object().__proto__ === Object.prototype.
built-ins/Object: 37/50 → 41/50. conformance.sh: 148/148.
2026-05-07 22:55:35 +00:00

896 B

test262 scoreboard

Pinned commit: d5e73fc8d2c663554fb72e2380a8c2bc1a318a33 Wall time: 37.1s

Total: 41/50 runnable passed (82.0%). Raw: pass=41 fail=9 skip=0 timeout=0 total=50.

Top failure modes

  • 4x ReferenceError (undefined symbol)
  • 2x SyntaxError (parse/unsupported syntax)
  • 2x Test262Error (assertion failed)
  • 1x runner-error: sx_server closed stdout mid-epoch

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

Category Pass Fail Skip Timeout Total Pass %
built-ins/Object 41 9 0 0 50 82.0%

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

built-ins/Object (41/50 — 82.0%)

  • 4x ReferenceError (undefined symbol)
  • 2x SyntaxError (parse/unsupported syntax)
  • 2x Test262Error (assertion failed)
  • 1x runner-error: sx_server closed stdout mid-epoch