Deploy nano-supabase as a serverless API on Val.town.

1. Go to val.town and create a new HTTP val
2. Copy the contents of index.ts into the editor
3. Your API is instantly live at https://YOUR_USERNAME-YOUR_VAL_NAME.web.val.run

# Install vt CLI
npm install -g @valtown/vt

# Login
vt login

# Create the val from this folder
cd examples/valtown
vt create my-chat-api . --no-editor-files --upload-if-exists --public

# Or clone and modify an existing one
vt clone filipecabaco/nano-chat

# Get API info
curl https://YOUR_USERNAME-YOUR_VAL_NAME.web.val.run/

# Create a conversation
curl -X POST https://YOUR_USERNAME-YOUR_VAL_NAME.web.val.run/conversations \
  -H "Content-Type: application/json" \
  -d '{"title": "Test Chat"}'

# Add a message
curl -X POST https://YOUR_USERNAME-YOUR_VAL_NAME.web.val.run/messages \
  -H "Content-Type: application/json" \
  -d '{"conversation_id": "YOUR_ID", "role": "user", "content": "Hello!"}'

Val.town workers are stateless - the database resets on cold starts. For persistence, use Val.town's blob storage:

import { blob } from "https://esm.town/v/std/blob";

// Save state periodically
async function saveState() {
  const dump = await db.dumpDataDir();
  await blob.setJSON("chat-db-state", dump);
}

// Restore on startup (in getDb function)
const saved = await blob.getJSON("chat-db-state");
if (saved) {
  db = new PGlite();
  await db.loadDataDir(saved);
}

The example uses a chat schema, but you can modify index.ts to:

• Add your own tables and schemas
• Implement different API endpoints
• Add authentication
• Connect to AI APIs for chat completions

"Invalid version provided" error: This usually means there's a caching issue. Try:

1. Delete the val and create a new one with a different name
2. Clear Val.town's module cache by changing the import URL (add ?v=2)

Import errors: Make sure you're using the exact versions specified:

• PGlite: npm:@electric-sql/pglite@0.2.17
• nano-supabase: https://raw.githubusercontent.com/filipecabaco/nano-supabase/main/dist/index.js