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Changelog

All notable changes to this project will be documented in this file.

The format is based on Keep a Changelog, and this project adheres to Semantic Versioning.

Unreleased

Breaking Changes

Added

  • #[rquickjs::methods] accepts enumerable, configurable, and writable on functions, and = false to disable default attributes
  • Added Value::loose_eq, Value::strict_eq, Value::same_value, and Value::same_value_zero which map to the various concepts of equality exposed by QuickJS.

Changed

Deprecated

Removed

Fixed

  • Fixed Ctx::eval and other related methods returning a String contained internal null bytes error when JS source contains null bytes
  • Fixed #[rquickjs::methods] failing to compile a setter with no matching getter
  • Fixed Promise::result and Promise::into_future leaving an already rejected promise unhandled, which made the host promise rejection tracker report a false unhandled rejection
  • Fixed exotic classes freeing the value passed to exotic_set_property twice
  • Atom::to_value returns a symbol if the atom represents a symbol, instead of always returning a JS string
  • Fixed converting an invalid JS Date into SystemTime or chrono::DateTime returning the Unix epoch instead of an error

Security

[0.14.0] - 2026-09-17

Breaking Changes

  • Removed unused trait StaticJsFunction.

Added

  • Added Exception::throw_dom, PredefinedAtom::DOMException, and intrinsic::DOMException.
  • Support for wasm32-unknown-unknown from [@mrchantey]

Fixed

  • Fixed Params::is_constructor to return the suggested value instead of false.
  • Fixed ExoticMethod to fix type checking for &Ctx
  • Fixed Ctx::execute_pending_job treating a job that threw the same as one that ran successfully, leaving the exception pending on the runtime instead of clearing it.
  • Fixed Object::instance_of leaving a pending exception on the runtime when the checked object isn't an instance of the given Rust class.

[0.13.0] - 2026-09-07

Breaking Changes

  • TypedArray::as_bytes, ArrayBuffer::as_bytes and ArrayBuffer::as_slice are now unsafe fn, and the unsound safe AsRef<[T]> impls for TypedArray and ArrayBuffer were removed in favor of the new unsafe fn TypedArray::as_slice #736
  • TypedArray::as_raw and ArrayBuffer::as_raw now return NonNull<[u8]> slice pointers, and the unnameable RawArrayBuffer type has been removed.

Added

  • Add pre-generated bindings for riscv64gc-unknown-linux-gnu and riscv64a23-unknown-linux-gnu
  • ArrayBuffer::new-backed buffers now support ArrayBuffer.prototype.transfer to a different length instead of always failing

Fixed

  • Fixed deadlock when dropping a Context while the runtime lock is held under the parallel feature
  • Updated sys/quickjs to 2c620e4 (quickjs-ng 0.16.2) and adapted ArrayBuffer callbacks to the new JSReallocArrayBufferDataFunc contract
  • Removed stale RefCountHeader cast in drop_context (field moved to allocator header in quickjs-ng)

Security

  • Fixed TypedArray/ArrayBuffer byte-slice accessors returning a safe &[u8] that could be mutated, detached or reallocated by JS running while the slice was still borrowed #736

[0.12.2] - 2026-07-27

Added

  • Added TypedArray<U8Clamped> support for Uint8ClampedArray, obtainable via TypedArray::from_object and matched by is_typed_array like other typed array classes

Fixed

  • Fixed rquickjs-sys host build failing during cross-compilation by reusing bundled bindings for the host target instead of running bindgen with a mismatched libclang #709

[0.12.1] - 2026-06-29

Changed

  • Updated phf, phf_shared and phf_generator to 0.14

Fixed

  • Fixed Constructor::new_prototype leaking a reference cycle that aborted JS_FreeRuntime with a gc_obj_list assertion failure

[0.12.0] - 2026-05-26

Breaking Changes

  • Added import attributes to the Loader trait #601
  • Added half support (f16) for Float16Array # 662
  • Value::new_big_int now returns Result<Value> so QuickJS allocation failures are surfaced to the caller #585

Added

  • Added #[qjs(prop)] method attribute to declare a JS data property on a class prototype. Unlike #[qjs(get)], which generates an accessor and requires a FromJs<Self> receiver, prop is evaluated at class registration time and emits a plain data descriptor (matching Web IDL semantics for @@toStringTag, @@species, etc.). Honours rename, configurable, enumerable, and a new writable flag (which also gates writable on prop).
  • Added FromJs and IntoJs derive macros for plain-data structs
  • Added RQUICKJS_SYS_NO_WASI_SDK env variable that skips downloading and setting up the WASI SDK when set to 1 #648
  • Added Object::new_proto for creating objects with a custom or null prototype #572
  • Added Symbol::new, Symbol::with_description, and Symbol::new_global for creating local and global symbols from Rust #672
  • Added ArrayBufferSource trait and ArrayBuffer::from_source / from_source_shared / from_source_immutable safe constructors for wrapping external, caller-owned buffers, with built-in impls for Vec<u8>, Box<[u8]>, Arc<[u8]>, Arc<Vec<u8>>, and (behind the bytes feature) bytes::Bytes
  • Add pre-generated bindings for armv7-unknown-linux-gnueabihf
  • Add pre-generated bindings for powerpc64-unknown-linux-gnu

Changed

  • Bump MSRV to 1.87
  • Updated AsyncContext::async_with to use async closure syntax #602

Deprecated

  • Deprecated async_with! macro #602

Fixed

  • Fixed Property::configurable() / .writable() / .enumerable() not emitting JS_PROP_HAS_* flags, so redefining an existing property silently kept its old attributes #693
  • Fixed QuickJS rope strings (JS_TAG_STRING_ROPE) not being recognized as strings, causing type_of(), is_string(), and as_string() to fail on large concatenated strings
  • Fixed interrupt handler causing GC assertion failure due to missing JS_DupContext on error context from JS_ExecutePendingJob #664
  • Fixed cross-thread stack overflow false positives in parallel mode by updating stack baseline before QuickJS C entry points
  • Fixed promise polling not returning Ready variant when exception occurs
  • Fixed promise future aborting on stale pending exceptions by only bailing on uncatchable errors (e.g. interrupt handler)
  • Fixed iterators to use correct IteratorPrototype chain
  • Fixed a latent ABI layout vulnerability in JS_NewPromiseCapability FFI boundary by replacing tuple with strictly compatible array
  • #[rquickjs::class] now rejects fields whose type implements JsClass with a clear compile error; such fields silently dropped nested mutations because the generated getter cloned the value. Wrap the field in Class<'js, T> instead #532
  • Added missing Trace implementations for Constructor, Promise, Proxy, ArrayBuffer, and TypedArray; added JsLifetime for Proxy; re-exported Constructor at the crate root
  • Fixed #[qjs(static, rename = PredefinedAtom::...)] methods failing when the target symbol exists as a non-writable property on Function.prototype (e.g. Symbol.hasInstance) by defining properties directly on the constructor instead of going through the prototype chain #315
  • Fixed #[qjs(static, get/set)] accessors being placed on the class prototype instead of the constructor #478
  • Fixed Runtime::set_max_stack_size crashing on large values (e.g. usize::MAX) by clamping to avoid a pointer underflow inside QuickJS's stack limit check #437

[0.11.0] - 2025-12-16

Added

  • Added Proxy object ##570
  • Allow setting filename as an eval option ##536
  • Add Iterable allow JS to iterate over Rust iterator ##564
  • Add JsIterator to iterate over Javascript Iterator ##564
  • Add more trait implementations like AsRef for CString ##558

Changed

Fixed

  • Fix wasm32 build #548

[0.10.0] - 2025-10-24

Added

  • Allow rquickjs-core to build with no_std ##455
  • Add PromiseHook bindings ##453
  • Add Module::write options to enable features like JS_WRITE_OBJ_STRIP_SOURCE and JS_WRITE_OBJ_STRIP_DEBUG ##443 and ##518
  • Allow building with sanitizer ##425
  • Add set_host_promise_rejection_tracker to AsyncRuntime ##452
  • Add linux arm64 support to sys crate ##445
  • Implement Trace for Atom ##517
  • Add disable-assertions feature to disable runtime assertions in quickjs ##535
  • Add JS_TAG_SHORT_BIG_INT tag to support short BigInt ##458 and ##519

Changed

  • Bump MSRV to 1.82 ##531
  • Update to 2024 edition ##473
  • Export DriveFuture ##491
  • Switch to dlopen2 for native module loading ##513

Fixed

  • Fix base objects intrinsic not being enabled in async context ##442
  • Fix namespace resolution for JsLifetime in derive macro ##429
  • Fix ownership of ctx pointers to be more ergonomic and fix cleanup bugs ##433
  • Fix rename option in qjs attribute ##428
  • Strip llvm suffix for *-pc-windows-gnullvm target ##506

[0.9.0] - 2025-01-29

Breaking Changes

  • Switching to quickjs-ng from quickjs as base engine #369

This change should bring better performances and features, we are aware that it is bigger in intruction sizes.

We would eventually like to support the "original" quickjs engine again in the future, but we use new functions now that are only available in the -ng version.