Issues

• Test262 survey (static-adapted-v5): per-chapter results on main vs integration branch

  vercel-labs/scriptc#1472 · Filter by author cramforce opened on Oct 20, 2026

• http.Server: 'connect' (and 'upgrade') events not available

  vercel-labs/scriptc#1439 · Filter by author saboursepideh opened on Oct 20, 2026

• node:crypto: no asymmetric keys/signing (generateKeyPairSync, sign), X509Certificate fields, or globalThis.crypto.subtle

  vercel-labs/scriptc#1441 · Filter by author saboursepideh opened on Oct 20, 2026

• node:tls: SNICallback, new tls.TLSSocket(socket, {isServer}), and ALPNProtocols not supported

  vercel-labs/scriptc#1438 · Filter by author saboursepideh opened on Oct 20, 2026

• Uint8Array.of (TypedArray.of) not supported: SC1090

  vercel-labs/scriptc#1440 · Filter by author saboursepideh opened on Oct 20, 2026

• ICE SC9001 "bytesSet on non-bytes union" compiling @noble/hashes sha256 (HashMD.digestInto)

  vercel-labs/scriptc#1437 · Filter by author saboursepideh opened on Oct 20, 2026

• Performance issue when compiling an object literal with a computed key (workaround 148x faster)

  vercel-labs/scriptc#1409 · Filter by author ainslec opened on Oct 19, 2026

• Perf issue storing a dictionary into a record's nested dictionary under a computed key (workaround 144x faster)

  vercel-labs/scriptc#1408 · Filter by author ainslec opened on Oct 19, 2026

• No SIMD emitted for typed-array dot-product / MAC loops (0 vector instructions in a 431 KB A64 binary)

  vercel-labs/scriptc#1388 · Filter by author croissantsam opened on Oct 19, 2026

• Global isFinite with a checker-unknown argument refuses with SC2012 (valid JS: ToNumber then NaN test)

  vercel-labs/scriptc#1386 · Filter by author espetro opened on Oct 19, 2026

• Compiler panics when compiling zod >= 4.5.0: 'null is not representable in the target union'

  vercel-labs/scriptc#1376 · Filter by author hangtiancheng opened on Oct 19, 2026

• Support Object.freeze / Object.isFrozen on native records passed through unknown (SC2020)

  vercel-labs/scriptc#1374 · Filter by author blurname opened on Oct 19, 2026

• Optional-parameter callback rejected inside a generic object method, but accepted in a generic function

  vercel-labs/scriptc#1373 · Filter by author blurname opened on Oct 19, 2026

• Support structural constructor return types with static members

  vercel-labs/scriptc#1372 · Filter by author blurname opened on Oct 19, 2026

• Clarify compilation pipeline stages, partition thresholds, and build performance in documentation

  vercel-labs/scriptc#1340 · Filter by author espetro opened on Oct 18, 2026

• Bound native codegen parallelism: --jobs / SCRIPTC_JOBS

  vercel-labs/scriptc#1325 · Filter by author devin-ai-integration opened on Oct 18, 2026
  1

• Record members stripped when a record crosses an npm-package call boundary (repro on 0.3.4; fixed in 0.3.5)

  vercel-labs/scriptc#1314 · Filter by author devin-ai-integration opened on Oct 18, 2026

• Support conditional return types depending on literal generic class parameters

  vercel-labs/scriptc#1240 · Filter by author blurname opened on Oct 18, 2026
  1

• Coverage could point out writes that make method calls slower

  vercel-labs/scriptc#1149 · Filter by author alantriesagain opened on Oct 16, 2026

• Support TSX / JSX lowering before native compilation

  vercel-labs/scriptc#889 · Filter by author papack opened on Oct 12, 2026

• Bun host support: TypeScript 7 sync transport crashes on stdout._handle.fd

  vercel-labs/scriptc#293 · Filter by author euxaristia opened on Sep 10, 2026
  2

• Embedders cannot offer async handlers: microtasks never drain while the host owns the thread (and library mode refuses async)

  vercel-labs/scriptc#265 · Filter by author mmamedel opened on Aug 30, 2026

• Embedding: the event loop is unreachable while the host owns the main thread (pump entry point + off-thread fs)

  vercel-labs/scriptc#260 · Filter by author mmamedel opened on Aug 30, 2026
  2

• Frontend rejects decorators with SC0001: Decorators are not valid here.

  vercel-labs/scriptc#238 · Filter by author Caleul opened on Aug 24, 2026

• First-class JSR support

  vercel-labs/scriptc#173 · Filter by author vinczemarton opened on Aug 19, 2026
  1