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# Environment Variable Validation with Zod

Stop your app from crashing 10 minutes into production because `DATABASE_URL` is undefined.

```typescript
import { z } from 'zod';

const envSchema = z.object({
  DATABASE_URL: z.string().url(),
  BETTER_AUTH_SECRET: z.string().min(32),
  BETTER_AUTH_URL: z.string().url(),
  GOOGLE_CLIENT_ID: z.string().optional(),