An independent Rust rewrite of QuickJS, targeting semantic feature parity with the official QuickJS 2026-06-04 release and its ES2025 behavior.
The unsafe-free engine is runnable, but it is not at Feature Parity yet. Its
strongest implemented slices cover ArrayBuffer/DataView/TypedArray,
SharedArrayBuffer and Atomics, collections and weak references, Promise jobs,
Unicode normalization, synchronous static-module graphs with namespace
objects, and a growing parser/VM surface.
The admitted R3dz-A milestone adds namespace imports, named indirect, star,
and namespace re-exports, iterative ResolveExport/GetExportedNames, and live
module namespace exotic objects. Its source-authenticated gate covers the
natural 37-root namespace cohort, a 48-file recursive closure, and 46 static
request edges; pinned QuickJS and Oxide both pass 37/37. Default imports,
default function/class exports, import.meta, attributes, and top-level await
remain fail-closed. The full Feature Parity goal is unchanged.
The latest admitted canonical vector is 68,145 passes / 68,197 runnable / 102,037 total variants. R3dz-A adds exactly 37 passes over R3dy-A; eight other rows change only their remaining unsupported-feature detail, 101,992 rows are byte-identical, and the two full replays match byte-for-byte. Detailed hashes and historical bookkeeping live in the status documents below.
Open the browser playground →
— it runs this Rust engine's actual WebAssembly build, not host eval. The
page reports its exact build commit, QuickJS target, and non-blocking browser
host policy. Curated examples include a function returning 42 and the
Atomics.wait host-policy boundary. The playground is a pre-parity milestone,
not a Feature Parity claim.
Rust 1.85 or newer is required.
git clone https://github.com/pocket-stack/quickjs-oxide.git
cd quickjs-oxide
./scripts/demo-42.sh # 42
cargo run --quiet --bin qjs -- --print-result -e \
'(function (a) { return a + 1; })(41)' # 42- Implementation status and milestone ledger
- Pinned Test262 progress baseline
- Parity acceptance contract
- Playground build and trust boundary
- Pinned upstream release
cargo test --locked --workspace --all-targets
./scripts/test-test262-current-global.sh --check # latest frozen receipt
./scripts/test-test262-full.sh
./scripts/test-web-playground.sh
npm ci && npx playwright install chromium && npm run test:browserHistorical focused gates and their checksum-bound receipts are indexed in the status documents above.