Welcome! We took tldraw's infinite canvas and added real-time team collaboration powered by Instant's graph database and presence.

• Auth via "magic code" login.
• A full-fledged teams/memberships/invites data model and secured by permissions.
• Multiplayer cursors via presence.

Head on over to the Instant dashboard, grab your app's ID, and plop it into a .env file:

NEXT_PUBLIC_INSTANT_APP_ID=__YOUR_APP_ID__

This is a Next.js project bootstrapped with create-next-app.

Install dependencies with your package manager of choice, then start the development server:

npm run dev
# or
yarn dev
# or
pnpm dev
# or
bun dev

That's it! 🎉 Open http://localhost:3000 with your browser to see the result. Next.js will live-update the page as you edit the app's code.

Finally, to add a layer of security to your app, copy resources/instant-perms.json into the Instant Permissions editor.

The app is broken up into two pages:

• An index page /, which serves as a dashboard and directory of teams and drawings.
• A drawing page /drawings/:id where we render the tldraw canvas.

Both pages load data from Instant with db.useQuery and write data using functions from src/mutators.ts.

• src/instant.schema.ts: Contains the schema for the app's data model.
• src/instant.perms.ts: Contains the permissions for the app.
• src/pages/index.tsx: The main dashboard: list and manage teams, teammates, and drawings.
• src/pages/drawings/[id].tsx: The canvas! Uses useInstantStore and useInstantPresence to add multiplayer.
• src/lib/clientDB.tsx: Exports our Instant database!
• src/lib/useInstantStore.tsx: A collaborative backend for tldraw built on top of Instant's real-time database. Uses InstaML's merge() for fine-grained updates to the drawing state.
• src/lib/useInstantPresence.tsx: A React hook responsible for keeping tldraw's editor state in sync with Instant's real-time presence API.
• src/mutators.ts: All functions that update Instant's database live here. You can inspect and edit your database using the Instant Explorer.

Instant is a sync engine inspired by Firebase with support for relational data. To learn more, check out this essay.