Merge pull request #875 from vercel-labs/ctate/prepare-v0-2-02ac14

Prepare v0.2.9
2026-10-30 07:14:39 +08:00 · 2026-10-11 18:02:02 -05:00
parent 83dce99e51 6adb753e89
commit ddacf49d11
32 changed files with 56 additions and 33 deletions
@@ -6,6 +6,31 @@ All notable changes to scriptc will be documented in this file.

 <!-- release:start -->

+## 0.2.9
+
+### Features
+
+- **`os.availableParallelism()` works in static programs.**
+- **`--detached-exit` frees the address space after `process.exit` off the critical path,** so large programs exit sooner.
+
+### Performance
+
+- **Cycle-capable objects are smaller.** A 16-byte collector header, typed rest spreads, leaf capture boxes, rarely used array storage moved out of line, and tracing only types that can actually lie on a cycle.
+- **The heap and cycle collector scale better.** Busy small-object slices use transparent huge pages, the collector's growth fraction widens further on large live heaps, and `Map`/`Set` `clear` and `delete` cost O(live) rather than O(peak).
+- **Indexed reads are cheaper.** Typed-array reads stay plain numbers where `undefined` acts like `NaN`, unproven indexes are checked with a signed round trip, lengths and in-range indexes convert to doubles without the unsigned sequence, nullable-union array elements are read inline, and counted loops that start from an unproven value run on integer counters.
+- **Worker programs pay less overhead.** Fewer termination polls, an exact per-thread pending word, a call-free macOS stack guard, and exiting worker threads return their free pages to the system.
+- **More receivers and fields stay native.** Optional-chain receivers are borrowed, `int32` fields survive `Error` subclasses that forward constructor arguments, and method calls stay native when only an unrelated callback field shares the name.
+- **Compiler-scale programs compile without hitting V8's string limit.** Serialized IR is streamed.
+
+### Fixes
+
+- **More values behave as in Node.js.** Missing array and typed-array reads stay `undefined` through number arguments, narrowed slots and lambda results, and `null` stays distinct from the temporal dead zone in forward-captured bindings.
+- **Union class fields work in more shapes.** Optional base-class receivers are narrowed before shared field access, and fields declared with different types across a union can be read and written.
+- **Workers share descriptor tables safely,** and live array references are accessed one element at a time.
+- **Native program objects use runtime ABI v12.** Runtime object layouts changed, so external object consumers must link the matching v0.2.9 runtime pack; the versioned marker rejects incompatible runtime objects at link time.
+
+<!-- release:end -->
+
 ## 0.2.8

 ### Features
@@ -28,8 +53,6 @@ All notable changes to scriptc will be documented in this file.
 - **Debuggers stop only at user code.** Shared helpers no longer appear on user source lines, so a breakpoint on a line stops only at that line's code.
 - **Native program objects use runtime ABI v9.** External object consumers must link the matching v0.2.8 runtime pack; the versioned marker rejects incompatible runtime objects at link time.

-<!-- release:end -->
-
 ## 0.2.7

 ### Features
@@ -187,7 +187,7 @@ An unchanged program reuses the previous verdict: coverage records the files and
 {
  "schema": "scriptc-diagnostics",
  "schemaVersion": 1,
-  "compilerVersion": "0.2.8",
+  "compilerVersion": "0.2.9",
  "command": "coverage",
  "entry": "/work/app/src/main.ts",
  "success": false,
@@ -1,6 +1,6 @@
 {
  "name": "@scriptc/cli-darwin-arm64",
-  "version": "0.2.8",
+  "version": "0.2.9",
  "description": "Native scriptc compiler for darwin-arm64",
  "license": "Apache-2.0",
  "homepage": "https://scriptc.dev",
@@ -1,6 +1,6 @@
 {
  "name": "@scriptc/cli-darwin-x64",
-  "version": "0.2.8",
+  "version": "0.2.9",
  "description": "Native scriptc compiler for darwin-x64",
  "license": "Apache-2.0",
  "homepage": "https://scriptc.dev",
@@ -1,6 +1,6 @@
 {
  "name": "@scriptc/cli-linux-arm64-gnu",
-  "version": "0.2.8",
+  "version": "0.2.9",
  "description": "Native scriptc compiler for linux-arm64-gnu",
  "license": "Apache-2.0",
  "homepage": "https://scriptc.dev",
@@ -1,6 +1,6 @@
 {
  "name": "@scriptc/cli-linux-arm64-musl",
-  "version": "0.2.8",
+  "version": "0.2.9",
  "description": "Native scriptc compiler for linux-arm64-musl",
  "license": "Apache-2.0",
  "homepage": "https://scriptc.dev",
@@ -1,6 +1,6 @@
 {
  "name": "@scriptc/cli-linux-x64-gnu",
-  "version": "0.2.8",
+  "version": "0.2.9",
  "description": "Native scriptc compiler for linux-x64-gnu",
  "license": "Apache-2.0",
  "homepage": "https://scriptc.dev",
@@ -1,6 +1,6 @@
 {
  "name": "@scriptc/cli-linux-x64-musl",
-  "version": "0.2.8",
+  "version": "0.2.9",
  "description": "Native scriptc compiler for linux-x64-musl",
  "license": "Apache-2.0",
  "homepage": "https://scriptc.dev",
@@ -1,6 +1,6 @@
 {
  "name": "@scriptc/cli-win32-x64-msvc",
-  "version": "0.2.8",
+  "version": "0.2.9",
  "description": "Native scriptc compiler for win32-x64-msvc",
  "license": "Apache-2.0",
  "homepage": "https://scriptc.dev",
@@ -1,6 +1,6 @@
 {
  "name": "scriptc",
-  "version": "0.2.8",
+  "version": "0.2.9",
  "description": "Compile ordinary TypeScript and JavaScript to small, fast native executables — no Node, no V8, no JavaScript engine in the binary",
  "license": "Apache-2.0",
  "homepage": "https://scriptc.dev",
@@ -1,6 +1,6 @@
 {
  "name": "@scriptc/compiler",
-  "version": "0.2.8",
+  "version": "0.2.9",
  "description": "The scriptc compiler — TypeScript/JavaScript frontend, typed IR, LLVM backend",
  "license": "Apache-2.0",
  "homepage": "https://scriptc.dev",
@@ -1,6 +1,6 @@
 {
  "schemaVersion": 1,
-  "compilerVersion": "0.2.8",
+  "compilerVersion": "0.2.9",
  "coverage": [
    "Entries are projected mechanically from the compiler's own decision tables: the diagnostics registry, the unsupported-syntax dispatch tables, the stdlib and node-builtin lowering tables, and the supported-builtin-module list. Nothing is hand-maintained; the manifest regenerates byte-identically from the source tree at this version.",
    "Absence from this manifest means 'not projected', never 'unsupported'. Surfaces lowered through dedicated code paths rather than tables are not yet projected: console, JSON, Promise/async and the timer surface, the net/http/tls/https/dgram/dns/assert/test/stream/readline module member surfaces, template literals, the regex slice, global functions (parseInt, parseFloat, isNaN, isFinite), and the process surface outside its ambient slice.",
@@ -1,6 +1,6 @@
 {
  "name": "@scriptc/llvm-darwin-arm64",
-  "version": "0.2.8",
+  "version": "0.2.9",
  "description": "Pinned LLVM code-generation helper for scriptc on macOS arm64",
  "license": "Apache-2.0 WITH LLVM-exception",
  "homepage": "https://scriptc.dev",
@@ -1,6 +1,6 @@
 {
  "name": "@scriptc/llvm-darwin-x64",
-  "version": "0.2.8",
+  "version": "0.2.9",
  "description": "Pinned LLVM code-generation helper for scriptc on macOS x64",
  "license": "Apache-2.0 WITH LLVM-exception",
  "homepage": "https://scriptc.dev",
@@ -1,6 +1,6 @@
 {
  "name": "@scriptc/llvm-linux-arm64-gnu",
-  "version": "0.2.8",
+  "version": "0.2.9",
  "description": "Pinned LLVM code-generation helper for scriptc on Linux arm64",
  "license": "Apache-2.0 WITH LLVM-exception",
  "homepage": "https://scriptc.dev",
@@ -1,6 +1,6 @@
 {
  "name": "@scriptc/llvm-linux-arm64-musl",
-  "version": "0.2.8",
+  "version": "0.2.9",
  "description": "Statically linked LLVM code-generation helper for scriptc on Linux arm64 musl",
  "license": "Apache-2.0 WITH LLVM-exception",
  "homepage": "https://scriptc.dev",
@@ -1,6 +1,6 @@
 {
  "name": "@scriptc/llvm-linux-x64-gnu",
-  "version": "0.2.8",
+  "version": "0.2.9",
  "description": "Pinned LLVM code-generation helper for scriptc on Linux x64",
  "license": "Apache-2.0 WITH LLVM-exception",
  "homepage": "https://scriptc.dev",
@@ -1,6 +1,6 @@
 {
  "name": "@scriptc/llvm-linux-x64-musl",
-  "version": "0.2.8",
+  "version": "0.2.9",
  "description": "Statically linked LLVM code-generation helper for scriptc on Linux x64 musl",
  "license": "Apache-2.0 WITH LLVM-exception",
  "homepage": "https://scriptc.dev",
@@ -1,6 +1,6 @@
 {
  "name": "@scriptc/llvm-win32-x64-msvc",
-  "version": "0.2.8",
+  "version": "0.2.9",
  "description": "Pinned LLVM code-generation helper for scriptc on Windows x64",
  "license": "Apache-2.0 WITH LLVM-exception",
  "homepage": "https://scriptc.dev",
@@ -1,6 +1,6 @@
 {
  "name": "@scriptc/runtime-android-arm64",
-  "version": "0.2.8",
+  "version": "0.2.9",
  "description": "Precompiled scriptc library runtime pack for Android arm64",
  "license": "Apache-2.0",
  "homepage": "https://scriptc.dev",
@@ -1,6 +1,6 @@
 {
  "name": "@scriptc/runtime-darwin-arm64",
-  "version": "0.2.8",
+  "version": "0.2.9",
  "description": "Precompiled scriptc runtime pack for macOS arm64",
  "license": "Apache-2.0",
  "homepage": "https://scriptc.dev",
@@ -1,6 +1,6 @@
 {
  "name": "@scriptc/runtime-darwin-x64",
-  "version": "0.2.8",
+  "version": "0.2.9",
  "description": "Precompiled scriptc runtime pack for macOS x64",
  "license": "Apache-2.0",
  "homepage": "https://scriptc.dev",
@@ -1,6 +1,6 @@
 {
  "name": "@scriptc/runtime-ios-arm64",
-  "version": "0.2.8",
+  "version": "0.2.9",
  "description": "Precompiled scriptc library runtime pack for iOS arm64",
  "license": "Apache-2.0",
  "homepage": "https://scriptc.dev",
@@ -1,6 +1,6 @@
 {
  "name": "@scriptc/runtime-ios-simulator-arm64",
-  "version": "0.2.8",
+  "version": "0.2.9",
  "description": "Precompiled scriptc library runtime pack for iOS simulator arm64",
  "license": "Apache-2.0",
  "homepage": "https://scriptc.dev",
@@ -1,6 +1,6 @@
 {
  "name": "@scriptc/runtime-linux-arm64-gnu",
-  "version": "0.2.8",
+  "version": "0.2.9",
  "description": "Precompiled scriptc runtime pack for Linux arm64 glibc",
  "license": "Apache-2.0",
  "homepage": "https://scriptc.dev",
@@ -1,6 +1,6 @@
 {
  "name": "@scriptc/runtime-linux-arm64-musl",
-  "version": "0.2.8",
+  "version": "0.2.9",
  "description": "Precompiled scriptc runtime pack for Linux arm64 musl",
  "license": "Apache-2.0",
  "homepage": "https://scriptc.dev",
@@ -1,6 +1,6 @@
 {
  "name": "@scriptc/runtime-linux-x64-gnu",
-  "version": "0.2.8",
+  "version": "0.2.9",
  "description": "Precompiled scriptc runtime pack for Linux x64 glibc",
  "license": "Apache-2.0",
  "homepage": "https://scriptc.dev",
@@ -1,6 +1,6 @@
 {
  "name": "@scriptc/runtime-linux-x64-musl",
-  "version": "0.2.8",
+  "version": "0.2.9",
  "description": "Precompiled scriptc runtime pack for Linux x64 musl",
  "license": "Apache-2.0",
  "homepage": "https://scriptc.dev",
@@ -1,6 +1,6 @@
 {
  "name": "@scriptc/runtime-wasm32-wasi",
-  "version": "0.2.8",
+  "version": "0.2.9",
  "description": "Precompiled scriptc runtime pack for WASI Preview 1",
  "license": "Apache-2.0",
  "homepage": "https://scriptc.dev",
@@ -1,6 +1,6 @@
 {
  "name": "@scriptc/runtime-win32-x64-msvc",
-  "version": "0.2.8",
+  "version": "0.2.9",
  "description": "Precompiled scriptc runtime pack for Windows x64 MSVC",
  "license": "Apache-2.0",
  "homepage": "https://scriptc.dev",
@@ -1,6 +1,6 @@
 {
  "name": "@scriptc/runtime",
-  "version": "0.2.8",
+  "version": "0.2.9",
  "description": "scriptc native runtime sources and vendored dependencies",
  "license": "Apache-2.0",
  "homepage": "https://scriptc.dev",
@@ -1,6 +1,6 @@
 {
  "name": "@scriptc/threads",
-  "version": "0.2.8",
+  "version": "0.2.9",
  "description": "Zero-copy publication of immutable object graphs to worker threads (scriptc), with a deep-freezing Node.js implementation",
  "license": "Apache-2.0",
  "homepage": "https://scriptc.dev",