scriptc

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Malte UblandClaude Opus 5.5 7bb72e1e17 Compile literal-key 'in' over index-signature records, fresh array spread insertions, and any-annotated dictionaries

- '"k" in record' with a literal key naming no declared member of an
  index-signature record (a match's named groups) takes the keyed
  presence probe a runtime key takes.
- Spreading a fresh array literal (directly, through a conditional, or
  through a const used only there) into push/unshift or an insertion
  converts its elements into the destination's element layout; nothing
  else can reach them, so the copy is unobservable.
- A const annotated with a type the checker reads as 'any' and
  initialized by an empty object literal holds the checked-dynamic
  object, so keyed writes fill it (the empty struct could hold nothing).

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

2026-10-20 03:09:53 -07:00

corpus

Compile literal-key 'in' over index-signature records, fresh array spread insertions, and any-annotated dictionaries

2026-10-20 03:09:53 -07:00

coverage-fixtures

Compile the real jose root entry: string durations, chained builders and navigator (#1407 )

2026-10-19 19:45:13 -05:00

deadstrip

…

diagnostics

Fix silent divergences: constructor returns, arr && arr[0], ES5 class names, builtin function values, uninitialized let writes, module-export this, 1 ** Infinity (#1351 )

2026-10-19 19:56:36 -05:00