Better Auth Core (TypeScript)

Goals

• Set up a Better Auth instance with environment variables and data layer wiring.
• Wire server handlers and a client instance.
• Use sessions and server-side API methods safely.
• Keep data-layer choices pluggable (drivers or adapters).

Quick start

1. Install better-auth.
2. Set BETTER_AUTH_SECRET (32+ chars) and BETTER_AUTH_URL.
3. Create auth.ts and export auth.
4. Provide database (driver or adapter) or omit for stateless sessions.
5. Mount a handler (auth.handler or a framework helper).
6. Create a client with createAuthClient.

import { betterAuth } from "better-auth";

export const auth = betterAuth({