haus for VS Code
⚠️ Experimental, like haus itself.
Editor support for .haus data files and .schema.haus schemas. Learn the format at haus-fmt.org.
Features
- 🎨 Highlighting for
.haus and .schema.haus; raw bidi control characters are marked as errors.
- 🚨 Errors as you type, e.g.
{ ok: true } → booleans are the variants True / False.
- 🔍 Hover with inferred types: hover any key or value to see the type merged over the whole file. In
Person { type: Engineer }, Person { type: Designer }, hovering type shows < Engineer | Designer >. Exact numbers warn when a Float64 would round them.
- 🧭 Outline of fields, items and variants (Cmd+Shift+O).
- ✨ Formatting:
- Format Document (Shift+Alt+F) or haus: Pretty Print gives one entry per line and keeps comments.
- haus: Compact puts every item on one line and drops comments.
- 📐 haus: Infer Schema from This File opens a
.schema.haus draft (command palette or the editor title bar).
Try it on person.haus, or on the recursive thread.haus, filesystem.haus and settings-ui.haus.
Settings
Format on save is not switched on by the extension. If you have it on globally and don't want it for haus:
"[haus]": { "editor.formatOnSave": false }
Develop
Press F5 in the repo root ("haus extension (dev host)" in .vscode/launch.json). A second window opens running the extension from this folder, with examples/ open. Run pnpm watch alongside, and reload that window after changes.
To try a packaged build:
cd editors/vscode
pnpm install
pnpm run package # builds haus.vsix
code --install-extension haus.vsix --force
Don't symlink this folder into ~/.vscode/extensions: VS Code caches the manifest and gets confused when the version changes.
