scriptc

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Malte UblandClaude Opus 5.5 5e65642fcf Compile mixed-tuple Promise.all, Boolean callbacks, enum key lookups and nullable regex receivers

- `Promise.all([p, q, r])` over different promise types (the tuple
  overload) lowers in TypeScript through one interned async helper that
  awaits the runtime combinator over the same promises (widened to
  Promise<void>, a type-only view), so settlement order and rejection
  handling are Node's, then reads each fulfilled entry into the tuple.
  Entries keep their identity; plain scalar entries pass through, and a
  checked-dynamic entry joins through the promise it holds.
- The ambient `Boolean` as an `every`/`some`/`find`/`findIndex`/`map`
  callback in TypeScript is the interned one-parameter truthiness
  closure `filter(Boolean)` already used, and `filter(Boolean)` accepts
  checked-dynamic elements (runtime truthiness).
- `E[key]` with a runtime string key answers the named member's constant,
  or undefined for a name no member carries; a numeric member's reverse
  key and inherited Object.prototype names throw a named runtime refusal.
- Regex-argument `replace`/`replaceAll`/`split`/`search`/`matchAll` on a
  `string | undefined` receiver take the string lowering and throw Node's
  "Cannot read properties of undefined (reading 'replace')".

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

2026-10-19 23:16:02 -07:00

corpus

Compile mixed-tuple Promise.all, Boolean callbacks, enum key lookups and nullable regex receivers

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coverage-fixtures

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

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

deadstrip

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diagnostics

Compile mixed-tuple Promise.all, Boolean callbacks, enum key lookups and nullable regex receivers

2026-10-19 23:16:02 -07:00