Zedit

Zedit is a Monaco-powered editor provider for Zync. It is a new plugin identity, com.zync.editor.zedit, and does not replace or update the legacy com.zync.editor.monaco plugin.

Architecture

The plugin deliberately keeps the host boundary small:

• bridge.ts owns all communication with Zync.
• editorController.ts owns the Monaco editor, active model and lifecycle.
• languages.ts maps host language hints and filenames to Monaco languages.
• workers.ts routes Monaco's native language workers lazily.
• theme.ts applies validated @zync-sh/plugin-ui tokens and converts them into a Monaco theme.
• commands.ts contains host-facing editor commands.

Only one text model is retained. Switching documents disposes the previous model. Edits are tracked by Monaco version rather than copying the full file to the host on each change. The host receives file content when saving; dirty-state messages are deduplicated, and every Monaco registration is disposed with the editor. TypeScript/JavaScript, JSON, HTML and CSS intelligence comes from Monaco itself. No external completion or context engine is bundled.

For files of at least one million characters, Zedit uses plain-text mode and turns off the minimap, folding, suggestions and hover processing. Editing and saving remain available without starting a language worker for that file. On updated Zync builds the modified state clears only after Zync confirms a successful save; older builds retain their existing save behavior.

The desktop file API still reads and writes complete files. Large-file mode reduces editor work and avoids per-edit document copies, but opening and saving very large files still require memory for the full file on both sides of the plugin boundary. A streaming file API would be needed to remove that limit.

Development

npm ci
npm run check

The build produces editor.html, the files in dist/, and artifacts/zedit-0.1.0.zip. The release check also validates the packaged files with the pinned @zync-sh/plugin-sdk preflight validator.

Install for local testing

1. Run npm run build.
2. Open Settings → Plugins → Developer in Zync.
3. Install artifacts/zedit-0.1.0.zip.
4. Choose Zedit as the default editor and open a text file.

The legacy Monaco plugin can remain installed because Zedit has a separate plugin ID. Disable the legacy provider while testing to avoid choosing the wrong editor.

Releasing

The zedit-v<version> tag workflow checks, signs and publishes a verified GitHub release. Protected publisher-key setup and marketplace onboarding are separate; see RELEASING.md before pushing a release tag.