Represent ordinary JavaScript arrays with hole, value, and explicit-undefined states; add sparse side storage and carry missing values through the frontend, native backends, runtime, and Node-facing consumers.
* Fix Sandbox command transport and pinned native setup
Build the Linux LLVM helper and runtime pack before running both test lanes, and align native cache contracts with the current target policy. Full managed Sandbox gate passed.
* Replace quadratic array sorting with stable merge sort
Cover sort snapshots, consistent-comparator results, stable ties, and comparator complexity with Node differential fixtures. Document differences from V8 TimSort.
Build the Linux LLVM helper and runtime pack before running both test lanes, and align native cache contracts with the current target policy. Full managed Sandbox gate passed.
* Expand LLVM native output targets
- Add owned helper and runtime-pack contracts for macOS x64, Linux glibc/musl, Windows x64, and WASI.
- Generalize LLVM target selection, package validation, linker plans, and release/CI matrices.
- Document linker boundaries and add focused native-output and runtime-pack coverage.
* Pin Windows LLVM helper CI to VS 2022
The official LLVM archive needs the Visual Studio 2022 CMake generator, which is not guaranteed by windows-latest.
* Align bootstrap cache with LLVM runtime-pack builds
Use the same target-specific helper and linker identity before and after compiler loading so routed executable cache hits remain lightweight.
* Install Windows LLVM CI tools with Chocolatey
windows-2022 includes Visual Studio but not winget; use its available Chocolatey bootstrap for CMake and Ninja.
* Prevent Zig version probes from leaving runtime-pack objects
Run runtime-pack compiler version probes in a private temporary directory and remove the accidental tracked WASI a.o file.
* Use 7-Zip for Windows LLVM setup
Extract the official LLVM development archive with two-stage 7-Zip instead of Windows tar.exe, which timed out while materializing the toolchain tree.
* Define ssize_t for the MSVC runtime pack
Clang's MSVC target does not expose POSIX ssize_t through sys/types.h; define the pointer-sized runtime type without affecting MinGW.
* Build the Windows runtime pack with Zig
Use the MinGW-compatible Windows sysroot required by the runtime while retaining COFF helper output and installing Zig in the Windows native CI lane.
* Give macOS LLVM differential shard time to finish
Shard 1 passed its setup and focused contracts but was cancelled during its cold LLVM differential slice at the 20-minute job limit.
* Separate native linking from C compilation
- Split the helper-object runtime-pack path into explicit link planning and platform linking.
- Reserve SCRIPTC_LINKER for object-only executable links while retaining a deprecated SCRIPTC_CC compatibility path.
- Add no-legacy-C coverage and document the linker/SDK boundary.
* Preserve runtime pack link errors
* Fix linker cache invalidation and warnings
* Fix C executable cache routing
- Keep explicit C builds on compiler-backed cache identities.
- Cover linker-only environment changes across exact C repeats.
* feat(cli): expose native object link info
- add versioned, cache-independent native link metadata for program objects
- document the experimental runtime ABI and provide C-driver and Apple linker examples
- verify ABI mismatch, FFI parity, packed installs, and external linking in CI
* fix(example): validate native runtime pack identity
- Consolidate package exports resolution behind explicit condition sets.
- Share counted-loop construction across frontend IR and LLVM emission.
- Move backend-neutral IR analyses into the shared IR layer.
- Route Map and Set operations through shared map-like emitters in both backends.
- Keep collection-specific get, set, add, iteration value, and array conversion lowering.
- Export canonical handle and pointer kind sets from the IR.
- Replace repeated C and LLVM dispatch ladders with membership checks.
- Preserve exhaustiveness and cover the scalar handle exception.
- Define one exhaustive IR runtime RC stem table shared by refcount detection and both backends.
- Derive C and LLVM retain/release symbols while preserving shape-specific and ABI exceptions.
- Add focused coverage for runtime, object, record, and LLVM declaration paths.
* Warn on non-null assertions
- Surface non-null assertions during linting without making them blocking.
- Preserve existing assertion sites for opportunistic cleanup.
* Classify internal compiler errors
- Export InternalCompilerError and migrate compiler invariant throws without changing messages.
- Rename the native cache test to match cc.ts and update test scheduling references.
- Document test placement by unit, package integration, and cross-package scope.
* Fix internal compiler error classification
Chris Tate