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rose-ash/lib/js/test262-scoreboard.md
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js-on-sx: js-num-from-string uses pow (float) for exponent
js-pow-int 10 20 overflows int64 (10^20 > 2^63), so numeric literals
like 1e20 and 100000000000000000000 were parsing as
-1457092405402533888. The pow primitive uses float-domain
exponentiation and produces 1e+20 correctly. Single call swap in
js-num-from-string. built-ins/String (with --restart-every 1):
67/99 → 70/99. conformance.sh: 148/148.
2026-05-07 13:42:32 +00:00

921 B

test262 scoreboard

Pinned commit: d5e73fc8d2c663554fb72e2380a8c2bc1a318a33 Wall time: 364.7s

Total: 67/99 runnable passed (67.7%). Raw: pass=67 fail=26 skip=1 timeout=6 total=100.

Top failure modes

  • 14x Test262Error (assertion failed)
  • 8x TypeError: not a function
  • 6x Timeout
  • 2x Unhandled: Not callable: \\
  • 1x ReferenceError (undefined symbol)
  • 1x SyntaxError (parse/unsupported syntax)

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

Category Pass Fail Skip Timeout Total Pass %
built-ins/String 67 26 1 6 100 67.7%

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

built-ins/String (67/99 — 67.7%)

  • 14x Test262Error (assertion failed)
  • 8x TypeError: not a function
  • 6x Timeout
  • 2x Unhandled: Not callable: \\
  • 1x ReferenceError (undefined symbol)