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create-t3-turbo-ai

NOTE: THIS IS VERY MUCH 🚧 WIP 🚧. A lot of the features are yet to come - stay tuned!

About

The ultimate starter repo for building full-stack, type-safe, LLM-powered web apps. It uses:

• Turborepo for monorepo management
• tRPC for API routing
• Prisma for database access
• Next.js for the web app
• OpenAI for the AI
• Langchain for LLM management

And much more!

Folder structure

.github
  └─ workflows
        └─ CI with pnpm cache setup
.vscode
  └─ Recommended extensions and settings for VSCode users
apps
  └─ next.js
      ├─ Next.js 13
      ├─ React 18
      ├─ Tailwind CSS
      └─ E2E Typesafe API Server & Client
packages
 ├─ api
 |   └─ tRPC v10 router definition
 ├─ auth
     └─ authentication using next-auth. **NOTE: Only for Next.js app, not Expo**
 └─ db
     └─ typesafe db-calls using Prisma

FAQ

Quick Start

To get it running, follow the steps below:

Setup dependencies

# Install dependencies
pnpm i

# In packages/db/prisma update schema.prisma provider to use sqlite
# or use your own database provider
- provider = "postgresql"
+ provider = "sqlite"

# Configure environment variables.
# There is an `.env.example` in the root directory you can use for reference
# Make sure you add the OPENAI_API_KEY environment variable!
cp .env.example .env

# Push the Prisma schema to your database
pnpm db:push

Deployment

Next.js

Prerequisites

We do not recommend deploying a SQLite database on serverless environments since the data wouldn't be persisted. I provisioned a quick Postgresql database on Railway, but you can of course use any other database provider. Make sure the prisma schema is updated to use the correct database.

Please note that the Next.js application with tRPC must be deployed in order for the Expo app to communicate with the server in a production environment.

Deploy to Vercel

Let's deploy the Next.js application to Vercel. If you have ever deployed a Turborepo app there, the steps are quite straightforward. You can also read the official Turborepo guide on deploying to Vercel.

1. Create a new project on Vercel, select the apps/nextjs folder as the root directory and apply the following build settings:

The install command filters out the expo package and saves a few second (and cache size) of dependency installation. The build command makes us build the application using Turbo.

2. Add your DATABASE_URL environment variable.

3. Done! Your app should successfully deploy. Assign your domain and use that instead of localhost for the url in the Expo app so that your Expo app can communicate with your backend when you are not in development.

TODO

• Organize prompts in a prompt library (rather than leaving them in the API folder)
• Add Promptable.js option
• Add embeddings example
• Add PromptLayer example
• Add Vercel Edge Functions to handle streaming
• Add ChatGPT w/ memory example
• Add LLM + Agents example
• Update to NextJS app directory (once stable)

References

The stack originates from create-t3-app and create-t3-turbo. The maintainers of these projects deserve all the credit!