This release adds 5 notable features for engineering teams evaluating rollout.
✓ No known CVEs patched in this version
Topics
+5 more
Summary
AI summaryBroad release touches Fixes — spec parity, runtime, Highlights, and hir.
Changes in this release
| Type | Severity | Summary | CVE |
|---|---|---|---|
| Feature | Low |
Adds fully-static musl Linux target (`--libc musl`). Adds fully-static musl Linux target (`--libc musl`). Source: llm_adapter@2026-06-09 Confidence: high |
— |
| Feature | Low |
Adds explicit resource management with `using`, `await using`, `Symbol.dispose`, and `DisposableStack`. (#4795, #4812) Adds explicit resource management with `using`, `await using`, `Symbol.dispose`, and `DisposableStack`. (#4795, #4812) Source: llm_adapter@2026-06-09 Confidence: high |
— |
| Feature | Low |
Adds SharedArrayBuffer and non‑agent Atomics spec parity. (#4794, #4803) Adds SharedArrayBuffer and non‑agent Atomics spec parity. (#4794, #4803) Source: llm_adapter@2026-06-09 Confidence: high |
— |
| Feature | Low |
Adds Annex B web‑compat features: String HTML methods, Object accessor methods, `RegExp.prototype.compile`, and `escape`/`unescape`. (#4796, #4813) Adds Annex B web‑compat features: String HTML methods, Object accessor methods, `RegExp.prototype.compile`, and `escape`/`unescape`. (#4796, #4813) Source: llm_adapter@2026-06-09 Confidence: high |
— |
| Feature | Low |
Adds cross‑platform DatePicker widget. (#4772, #4790) Adds cross‑platform DatePicker widget. (#4772, #4790) Source: llm_adapter@2026-06-09 Confidence: high |
— |
| Feature | Low |
Adds drag‑and‑drop support across all platforms. (#4773, #4791) Adds drag‑and‑drop support across all platforms. (#4773, #4791) Source: llm_adapter@2026-06-09 Confidence: high |
— |
| Feature | Low |
Adds WinUI 3 backend scaffold and `--target windows-winui` option. (#4680, #4780) Adds WinUI 3 backend scaffold and `--target windows-winui` option. (#4680, #4780) Source: llm_adapter@2026-06-09 Confidence: high |
— |
| Feature | Low |
Adds async-from-sync iterator adapter. (#4590) Adds async-from-sync iterator adapter. (#4590) Source: granite4.1:30b@2026-06-09-audit Confidence: low |
— |
| Bugfix | Medium |
Fixes async‑generator spec parity from 57.7 % to 93.0 %. (#4777) Fixes async‑generator spec parity from 57.7 % to 93.0 %. (#4777) Source: llm_adapter@2026-06-09 Confidence: high |
— |
| Bugfix | Medium |
Fixes Temporal Duration/Instant parity from 29.8 % to 88.5 %. (#4819) Fixes Temporal Duration/Instant parity from 29.8 % to 88.5 %. (#4819) Source: llm_adapter@2026-06-09 Confidence: high |
— |
| Bugfix | Medium |
Fixes nested‑Proxy `Object.getPrototypeOf` segfault on Linux. (#4824) Fixes nested‑Proxy `Object.getPrototypeOf` segfault on Linux. (#4824) Source: llm_adapter@2026-06-09 Confidence: high |
— |
| Bugfix | Low |
Fixes Temporal ZonedDateTime parity from 34 % to 84 %. (#4820) Fixes Temporal ZonedDateTime parity from 34 % to 84 %. (#4820) Source: granite4.1:30b@2026-06-09-audit Confidence: low |
— |
| Bugfix | Low |
Improves Temporal PlainDate/PlainDateTime, PlainTime, YearMonth, MonthDay, Now parity. (#4818, #4821) Improves Temporal PlainDate/PlainDateTime, PlainTime, YearMonth, MonthDay, Now parity. (#4818, #4821) Source: granite4.1:30b@2026-06-09-audit Confidence: low |
— |
| Bugfix | Low |
Fixes built‑ins RegExp non‑lookbehind parity. (#4809) Fixes built‑ins RegExp non‑lookbehind parity. (#4809) Source: granite4.1:30b@2026-06-09-audit Confidence: low |
— |
| Bugfix | Low |
Resolves eval-code, function-code, and arguments‑object parity issues. (#4808) Resolves eval-code, function-code, and arguments‑object parity issues. (#4808) Source: granite4.1:30b@2026-06-09-audit Confidence: low |
— |
| Bugfix | Low |
Addresses tails of Date, Number, JSON, Math, NativeErrors test262 cases. (#4807) Addresses tails of Date, Number, JSON, Math, NativeErrors test262 cases. (#4807) Source: granite4.1:30b@2026-06-09-audit Confidence: low |
— |
| Bugfix | Low |
Stabilizes typed‑array and exotic‑descriptor crashes in built‑ins tails. (#4817) Stabilizes typed‑array and exotic‑descriptor crashes in built‑ins tails. (#4817) Source: granite4.1:30b@2026-06-09-audit Confidence: low |
— |
| Bugfix | Low |
Improves expression‑semantics parity (new, delete, call, spread, compound assign). (#4802) Improves expression‑semantics parity (new, delete, call, spread, compound assign). (#4802) Source: granite4.1:30b@2026-06-09-audit Confidence: low |
— |
| Bugfix | Low |
Enhances statement‑semantics parity (for‑of iterator protocol, with, eval completion values). (#4786) Enhances statement‑semantics parity (for‑of iterator protocol, with, eval completion values). (#4786) Source: granite4.1:30b@2026-06-09-audit Confidence: low |
— |
| Bugfix | Low |
Updates built‑ins Object parity v2. (#4784) Updates built‑ins Object parity v2. (#4784) Source: granite4.1:30b@2026-06-09-audit Confidence: low |
— |
| Bugfix | Low |
Updates built‑ins Array parity v2. (#4778) Updates built‑ins Array parity v2. (#4778) Source: granite4.1:30b@2026-06-09-audit Confidence: low |
— |
| Bugfix | Low |
Fixes built‑ins String boxed‑receiver methods and argument coercion. (#4754, #4755) Fixes built‑ins String boxed‑receiver methods and argument coercion. (#4754, #4755) Source: granite4.1:30b@2026-06-09-audit Confidence: low |
— |
| Bugfix | Low |
Aligns Function parity (instanceof Function, constructor, prototype length/name). (#4752, #4758, #4761) Aligns Function parity (instanceof Function, constructor, prototype length/name). (#4752, #4758, #4761) Source: granite4.1:30b@2026-06-09-audit Confidence: low |
— |
| Bugfix | Low |
Improves Proxy built‑in parity. (#4748) Improves Proxy built‑in parity. (#4748) Source: granite4.1:30b@2026-06-09-audit Confidence: low |
— |
| Bugfix | Low |
Refines class field/element initializer parity v2. (#4779) Refines class field/element initializer parity v2. (#4779) Source: granite4.1:30b@2026-06-09-audit Confidence: low |
— |
| Bugfix | Low |
Corrects class accessor name, super, subclass, and method parity. (#4770) Corrects class accessor name, super, subclass, and method parity. (#4770) Source: granite4.1:30b@2026-06-09-audit Confidence: low |
— |
| Bugfix | Low |
Supports static and computed accessors on class expressions. (#4747) Supports static and computed accessors on class expressions. (#4747) Source: granite4.1:30b@2026-06-09-audit Confidence: low |
— |
| Bugfix | Low |
Ensures method‑as‑value identity and injective private‑symbol mangling in classes. (#4764) Ensures method‑as‑value identity and injective private‑symbol mangling in classes. (#4764) Source: granite4.1:30b@2026-06-09-audit Confidence: low |
— |
| Bugfix | Low |
Improves class destructuring and default‑parameter parity. (#4766) Improves class destructuring and default‑parameter parity. (#4766) Source: granite4.1:30b@2026-06-09-audit Confidence: low |
— |
Full changelog
Highlights
- Massive TC39 test262 parity push across the spec surface — Temporal (Duration/Instant 29.8%→88.5%, ZonedDateTime 34%→84%, PlainDate/PlainDateTime/PlainTime/YearMonth/MonthDay/Now), async generators 57.7%→93.0%, plus broad Array/String/Function/Object/Proxy/Promise/RegExp/class/iteration/expression-semantics work.
- Explicit Resource Management —
using/await using/Symbol.dispose/Symbol.asyncDispose/DisposableStack(#4795, #4812). - SharedArrayBuffer + non-agent Atomics spec parity (#4794, #4803).
- Annex B web-compat — String HTML methods, Object accessor methods,
RegExp.prototype.compile,escape/unescape(#4796, #4813). - Lone-surrogate round-tripping via WTF-8 (#4793, #4806) and fancy-regex fallback wired through every RegExp op (#4797, #4801).
- Cross-platform UI: DatePicker widget (#4772), drag & drop across all platforms (#4773), WinUI 3 backend scaffold +
--target windows-winui(#4680). - Fully-static musl Linux target (
--libc musl/[linux] libc) (#4834).
Features
- feat(linux): fully-static musl target —
--libc musl/[linux] libc(#4834) - feat(runtime): explicit-resource-management — using / await using / Symbol.dispose (#4795, #4812)
- feat(runtime): SharedArrayBuffer + non-agent Atomics spec parity (#4794, #4803)
- feat(annexb): String HTML methods, Object accessor methods, RegExp.compile, escape/unescape ToString (#4796, #4813)
- feat(runtime): async-from-sync iterator adapter (#4590)
- feat(ui): cross-platform DatePicker widget (#4772, #4790)
- feat(ui): drag & drop across all platforms (#4773, #4791)
- feat(ui-windows): WinUI 3 backend scaffold + --target windows-winui (#4680, #4780)
- feat(codegen): default Windows output extension by type (#4771, #4782)
- feat(publish): [android] version_code override (#4814)
Fixes — spec parity (test262)
- fix(runtime): Temporal Duration + Instant parity 29.8%→88.5% (#4819)
- fix(runtime): Temporal.ZonedDateTime parity 34%→84% (#4820)
- fix(runtime): Temporal PlainDate/PlainDateTime parity + object-method arg-cap fix (#4821)
- fix(runtime): Temporal PlainTime/YearMonth/MonthDay/Now parity + shared infra (#4818)
- fix: standalone async-generator parity 57.7%→93.0% (#4777)
- fix(runtime): built-ins/RegExp (non-lookbehind) parity (#4809)
- fix: eval-code / function-code / arguments-object parity (#4808)
- fix(runtime): Date/Number/JSON/Math/NativeErrors test262 tails (#4807)
- fix(runtime): typed-array & exotic-descriptor crashes in built-ins tails (#4817)
- fix(hir): expression-semantics parity (new/delete/call/spread/compound-assign) (#4802)
- fix(hir): statement-semantics parity (for-of iterator protocol, with, eval completion-values) (#4786)
- fix(runtime): built-ins/Object parity v2 (#4784)
- fix(runtime): built-ins/Array parity v2 (#4778)
- fix(runtime): built-ins/String boxed-receiver methods + arg coercion (#4754, #4755)
- fix(runtime): built-ins/Function parity — instanceof Function, fn.constructor, prototype length/name (#4752, #4758, #4761)
- fix(runtime): built-ins/Proxy parity (#4748)
- fix(hir): class field/element initializer parity v2 (#4779)
- fix: class accessor-name / super / subclass / method parity (#4770)
- fix: class async / async-generator method parity (#4768)
- fix(class): static & computed accessors on class expressions (#4747)
- fix(class): method-as-value identity + injective private-symbol mangling (#4764)
- fix(hir): class destructuring + default-parameter parity (#4766)
- fix(hir): object-literal semantics parity (#4751)
- fix(hir): iteration-statement protocol parity (#4750)
- fix(operators): abstract relational comparison + logical-assignment NamedEvaluation (#4753)
- fix(transform,runtime): yield* delegation next-capture + object-literal thenable await (#4783)
- fix(runtime): TypedArray @@species (SpeciesCreate) for slice/subarray/map/filter (#4762)
- fix(runtime): TypedArray dynamic buffer-view construction + from/of/new validation (#4763)
- fix(runtime): TypedArray.prototype.set offset validation + array-like coercion (#4757)
- fix(runtime): TypedArray element-store coercion (ToUint32 modular) + f16 rounding (#4746)
- fix(runtime): Promise resolving-functions guard + combinator semantics (#4745)
- fix(runtime): Promise static methods preserve receiver brand checks when borrowed (#4603)
- fix(runtime): generic Array.prototype.reverse/fill over array-like receivers (#4620, #4640)
Fixes — runtime / codegen / crashes
- fix(runtime): adopt returned promise state on async tail-return (#4832)
- fix(runtime): honor dangerouslySetInnerHTML in hono/jsx rendering (#4827, #4830)
- fix(runtime): nested-Proxy Object.getPrototypeOf no longer segfaults on Linux (#4824)
- fix(runtime): round-trip lone surrogates via WTF-8 (#4793, #4806)
- fix(runtime): wire fancy-regex fallback through every RegExp operation (#4797, #4801)
- fix(hir): obj?.method(args) on builtins no longer short-circuits to undefined (#4816)
- fix(runtime): for-of/spread over a Headers handle no longer segfaults (#4800)
- fix(runtime): bind this=iterable when calling Symbol.iterator (#4788)
- fix(runtime): function-object descriptors + proxy SetIntegrityLevel parity (#4789)
- fix(runtime): frozen-array pop/shift/push/unshift throw TypeError (#4781)
- fix(codegen): destructured-value copies no longer truncate to i32 (#4785)
- fix(runtime): symbol-keyed property write on a native handle no longer throws (#4749)
- fix(codegen):
new <imported-function>()runs the constructor body (#4769) - fix: zod v4 safeParse on invalid input — crash + readable error (#4699, #4774)
Fixes — platform / stdlib / build
- fix(macos): chdir to Contents/Resources on .app launch so assets resolve (#4833)
- fix(hir): resolve CJS worker path joins (#4815)
- fix(cjs): prune dead platform-guarded requires (#4822)
- fix(publish): anchor bare-name [publish].exclude entries to the project root (#4811)
- fix(android): make perry-ui-android resilient to a shadowed JNI_OnLoad (#4804)
- fix(watchos/visionos): find the entry object by symbol, not filename (#4799)
- fix(tvos): copy project resource dirs into the .app bundle (#4787)
- fix(ui-windows): Mica-by-default + WM_DPICHANGED relayout (#4681, #4776)
- fix(link): link libc++/libc++abi in cross-Apple branches (#4759)
- fix(runtime): @hono/node-server c.req.text()/.json()/.formData() on POST/PUT (#4765)
- fix(runtime): subclassing native Request/Response exposes working body methods (#4756)
- fix(stream): honor emitClose/autoDestroy close-lifecycle options (#4386)
- fix(net): native-handle instanceof net.Socket + explicit Tokio runtimes (#4525)
- fix(http): Agent drops the bogus close method to match Node (#4628)
- fix(zlib): expose external Transform stream handles + validate async one-shot callback (#4506, #4514)
- fix(webcrypto): algorithm.length for KMAC128/256 (#4515)
- fix(globals): spec .length for legacy/global function values (#4545)
See CHANGELOG.md for full detail.
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About perry
A native TypeScript compiler written in Rust. Compiles TypeScript directly to executables using SWC and LLVM.
Related context
Related tools
Earlier breaking changes
- v0.5.1158 `cluster` workers share a listening port using SO_REUSEPORT and IPC round‑trip.
- v0.5.1158 Streams now support BYOB readers and real `ByteLengthQueuingStrategy` accounting.
- v0.5.1158 `Atomics.wait`, `notify`, and `waitAsync` now block and wake across agents using a shared `SharedArrayBuffer`.
- v0.5.1158 `node:dns` and `node:dgram` perform real network I/O instead of stub behavior.
- v0.5.1158 `AsyncLocalStorage` and `async_hooks` now propagate context across await, microtasks, timers, and `process.nextTick`.
Beta — feedback welcome: [email protected]