onykia-engine

Typst compiled to WebAssembly for the web with nice bindings for IDEs and more.

Read the docs on docs.onykia.eu.

Used in onykia-editor and onykia-app.

Packages

| npm | what | |-----|------| | @mudomi/onykia-engine | TS client: worker pool, message bus, IDE-feature API. | | @mudomi/onykia-codemirror | CodeMirror 6 bindings: highlight, autocomplete, hover, definition, diagnostics. | | @mudomi/onykia-monaco | Monaco binding: edit forwarding + diagnostics. |

Prerequisites

• Rust nightly
• wasm-bindgen-cli - version-matched to the wasm-bindgen crate in src/rust/Cargo.toml.
• Node.js 20+ and npm 10+.

Try it

npm install
npm run build:wasm
npm run example:codemirror   # or example:monaco

Cross-origin isolation

Loading onykia-engine requires a cross-origin-isolated host page, serve it with:

Cross-Origin-Opener-Policy:   same-origin
Cross-Origin-Embedder-Policy: require-corp

Without these headers createWasmFactory() throws synchronously with a message pointing at this section. See SharedArrayBuffer requirements.

Known gaps

• Outline notifications are stubbed.
• archive() is stubbed.
• Font index decoder only accepts JSON.
• Spellcheck is delegated to JS; no built-in hunspell.
• Monaco binding supports only edits + diagnostics - no syntax highlight, autocomplete, hover, or definition.

More

For contributions & release flow see CONTRIBUTING.md.

This package bundles Typst, licensed under the Apache License 2.0. The code in this package is MIT licensed. See LICENSE and NOTICE.