Malte UblandClaude Opus 5.5 db68255cbc Read typescript-go's unreadable match-or-empty unions through their widened members; compile tuple spreads, Stats arrays, primitive then handlers and fielded error inspection ...

- `s.match(re) ?? []` / `|| []` made typescript-go's API panic whenever the
  union's members were serialized (the empty literal is a tuple clone
  without tuple data), poisoning the statement with SC0004. The members
  of the union's widened type are readable and describe the same values,
  so constituent reads answer with them; the empty tuple beside a match
  array is one of its values. `checker-panic-tuple.ts` compiles and moves
  to the corpus.
- Spreading a fixed tuple into an array literal copies its positions
  into the literal's element type.
- fs.Stats values are an array element kind, so `Promise.all` over
  `stat()` promises and `Stats[].reduce` compile.
- `.then(String)`, `.then(Number)` and `.then(Boolean)` over a number or
  boolean settled value convert it through an interned closure.
- Inspecting (util.format, %s, util.inspect) an Error-typed value whose
  runtime class declares fields prints the stackless base with Node's
  constructor-name header (`[Bailable [Error]: m]`) and the own
  properties, `[Bailable [Error]: m] { bail: true }`; it was refused. A
  subclass whose own fields cannot render (functions, or a field Node's
  error inspector treats specially) throws a named refusal on its own
  instances only.

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

2026-10-20 05:17:42 -07:00

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corpus

Read typescript-go's unreadable match-or-empty unions through their widened members; compile tuple spreads, Stats arrays, primitive then handlers and fielded error inspection

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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

Read typescript-go's unreadable match-or-empty unions through their widened members; compile tuple spreads, Stats arrays, primitive then handlers and fielded error inspection

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ffi

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fixtures

Merge main

2026-10-20 02:40:17 -05:00

harness

Read typescript-go's unreadable match-or-empty unions through their widened members; compile tuple spreads, Stats arrays, primitive then handlers and fielded error inspection

2026-10-20 05:17:42 -07:00

library-mode

Add the cstring class to library profiles

2026-10-17 23:40:06 -05:00

test262

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