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🏡 Home

Start a new Supabase project Create a Next.js app with the create-next-app CLI Query Supabase data from Next.js Server Components Create an OAuth app with GitHub Authenticate users with GitHub OAuth using Supabase and Next.js Client Components Refresh session cookie for Next.js Server Components with Middleware Restrict access to authenticated users with RLS policies Dynamically render UI based on user session with SSR in Next.js Client Components Implement Protected Routes for authenticated users with Supabase Auth Generate TypeScript definitions from PostgreSQL schema with Supabase CLI Setup a Foreign Key relationship between PostgreSQL tables Automatically generate a profile for every user with PostgreSQL Function Triggers Run authenticated Server-side mutations with Next.js Server Actions Create a PostgreSQL join table in Supabase Studio Implement dynamic buttons with Next.js Client Components Declare global union types with Typescript Implement Optimistic UI with the Next.js useTransition hook Dynamically update UI with Database changes using Supabase Realtime Style a Twitter clone with Tailwind CSS Deploy Next.js App Router project to production with Vercel

Declare global union types with Typescript

📹 Video

TypeScript reduces runtime errors and makes code more maintainable. In this lesson, we use the Supabase CLI to introspect our PostgreSQL schema and generate TypeScript definitions.

Additionally, we resolve a collection of TypeScript errors and create a custom union type for our transformed tweets - making it globally available throughout our Next.js application.

Code Snippets

Custom type for TweetWithAuthor

type TweetWithAuthor = Tweet & {
  author: Profile;
  likes: number;
  user_has_liked_tweet: boolean;
};

Generate TypeScript definitions

npx supabase gen types typescript --project-id your-project-id > lib/database.types.ts

Resources

👉 Next lesson

Enjoying the course? Follow Jon Meyers on Twitter and subscribe to the YouTube channel.