Project setup

Project setup

This guide covers the recommended project structure and scaffolding for AppKit applications.

Canonical project layout

Recommended structure (client/server split):

my-app/ ├── server/ │ ├── server.ts # backend entry point (AppKit) │ └── .env # optional local dev env vars (do not commit) ├── client/ │ ├── index.html │ ├── vite.config.ts │ └── src/ │ ├── main.tsx │ └── App.tsx ├── config/ │ └── queries/ │ └── my_query.sql ├── app.yaml ├── package.json └── tsconfig.json

Layout rationale

The AppKit server() plugin automatically serves:

  • Dev: Vite dev server (HMR) from client/
  • Prod: static files from client/dist (built by Vite)

Project scaffolding

package.json

{
  "name": "my-app",
  "private": true,
  "version": "0.0.0",
  "type": "module",
  "scripts": {
    "dev": "NODE_ENV=development tsx watch server/server.ts",
    "build": "npm run build:server && npm run build:client",
    "build:server": "tsdown --out-dir build server/server.ts",
    "build:client": "tsc -b && vite build --config client/vite.config.ts",
    "start": "node build/index.mjs"
  },
  "dependencies": {
    "@databricks/appkit": "^0.1.2",
    "@databricks/appkit-ui": "^0.1.2",
    "react": "^19.2.3",
    "react-dom": "^19.2.3"
  },
  "devDependencies": {
    "@types/node": "^20.0.0",
    "@types/react": "^19.0.0",
    "@types/react-dom": "^19.0.0",
    "@vitejs/plugin-react": "^5.1.1",
    "tsdown": "^0.20.3",
    "tsx": "^4.19.0",
    "typescript": "~5.6.0",
    "vite": "^7.2.4"
  }
}

client/index.html

<!doctype html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>My App</title>
  </head>
  <body>
    <div id="root"></div>
    <script type="module" src="/src/main.tsx"></script>
  </body>
</html>

client/src/main.tsx

import { StrictMode } from "react";
import { createRoot } from "react-dom/client";
import App from "./App";

createRoot(document.getElementById("root")!).render(
  <StrictMode>
    <App />
  </StrictMode>,
);

client/src/App.tsx (Minimal)

export default function App() {
  return (
    <div className="p-8">
      <h1 className="text-2xl font-bold">My App</h1>
    </div>
  );
}

client/vite.config.ts

import { defineConfig } from "vite";
import react from "@vitejs/plugin-react";

export default defineConfig({
  plugins: [react()],
});

tsconfig.json

{
  "compilerOptions": {
    "target": "ES2022",
    "lib": ["ES2022", "DOM", "DOM.Iterable"],
    "module": "ESNext",
    "moduleResolution": "bundler",
    "jsx": "react-jsx",
    "strict": true,
    "skipLibCheck": true,
    "noEmit": true,
    "allowImportingTsExtensions": true,
    "verbatimModuleSyntax": true
  },
  "include": ["server", "client/src"]
}

server/server.ts

import { createApp, server } from "@databricks/appkit";

await createApp({
  plugins: [server()],
});

Running the app

# Install dependencies
npm install

# Development (starts backend + Vite dev server)
npm run dev

# Production build
npm run build
npm start

Integrating into an existing app

If you already have a React/Vite app and want to add AppKit:

1. Install dependencies

npm install @databricks/appkit @databricks/appkit-ui react react-dom
npm install -D tsx tsdown vite @vitejs/plugin-react typescript

If you don't already have a client/ folder, create one and move your Vite app into it:

  • Move index.html → client/index.html
  • Move vite.config.ts → client/vite.config.ts
  • Move src/ → client/src/

2. Create server/server.ts (New File)

import { createApp, server } from "@databricks/appkit";

await createApp({
  plugins: [server()],
});

3. Update package.json Scripts

{
  "scripts": {
    "dev": "NODE_ENV=development tsx watch server/server.ts",
    "build": "npm run build:server && npm run build:client",
    "build:server": "tsdown --out-dir build server/server.ts",
    "build:client": "tsc -b && vite build --config client/vite.config.ts",
    "start": "node build/index.mjs"
  }
}

4. Complete setup

AppKit's server plugin will automatically serve your Vite app in dev mode and client/dist in production. If your Vite app must stay at the repo root (no client/ folder), AppKit can still work, but the recommended layout is client/ + server/.

Adding analytics to an existing app

To add SQL query execution capabilities:

// server/server.ts
import { createApp, server, analytics } from "@databricks/appkit";

await createApp({
  plugins: [server(), analytics()],
});

Then create config/queries/ and add your .sql files.

See also

Databricks Developer Hub

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