@eclipse-lyra/create-app

Scaffold a new Eclipse Lyra app with a single command.

Testing locally

From the Eclipse Lyra monorepo root, run the CLI with Node (no publish needed):

node packages/create-app/index.js my-app
# or non-interactive:
node packages/create-app/index.js my-app --yes

Or use npx with the package path:

npx file:./packages/create-app my-app --yes

Then cd my-app && npm run dev to run the scaffolded app.

Usage (published package)

npm create @eclipse-lyra/app

With a project name (directory):

npm create @eclipse-lyra/app my-app

To skip prompts when a project name is provided:

npm create @eclipse-lyra/app my-app -- --yes

Next steps

After scaffolding:

cd my-app
npm run dev

From the created project root, npm run dev runs the app (Vite). Use npm run build and npm run preview to build and preview.

What you get

• A monorepo with two workspace packages:
  • packages/app – the Lyra app (Vite, core + extensions from npm).
  • packages/example-extension – a minimal example extension you can copy or extend.
• The app registers a logo contribution on the left main toolbar (slot start) with the text my!app; you can change it in packages/app/src/main.ts.
• The example extension is loaded by the app and adds an "Example" view in the left side panel.

Example extension

The template includes an example extension in packages/example-extension to show how to build your own extensions without publishing a separate npm package.

• src/index.ts – Registers the extension with extensionRegistry.registerExtension() (id, name, description, loader, icon). Same pattern as published extensions like @eclipse-lyra/extension-howto-system and @eclipse-lyra/extension-utils.
• src/example-extension-loader.ts – Loaded when the extension is activated. Registers a TabContribution to SIDEBAR_MAIN (the left side panel), so the "Example" tab appears alongside the workspace file browser.
• tsconfig.json – TypeScript config for the extension (IDE and type-checking).
• vite.config.ts – Vite lib build; run npm run build -w example-extension to output dist/ when you want to publish the extension.

You can edit packages/example-extension in place, add more views or contributions, or copy it to start a new extension. The app depends on it via "example-extension": "*" in packages/app/package.json (npm links the workspace package). The app compiles the extension from source in dev; use the extension’s build script if you publish it as a separate package.