next.config.js

// Server-side environment variables (won't be exposed to client)
const serverEnv = {
    AWS_ACCESS_KEY_ID: process.env.AWS_ACCESS_KEY_ID,
    AWS_SECRET_ACCESS_KEY: process.env.AWS_SECRET_ACCESS_KEY,
    MONGO_URI: process.env.MONGO_URI,
    DB_NAME: process.env.DB_NAME,
  };
  
  // Client-side environment variables (exposed to browser)
  const clientEnv = {
    COGNITO_USER_POOL_ID: process.env.NEXT_PUBLIC_COGNITO_USER_POOL_ID,
    COGNITO_CLIENT_ID: process.env.NEXT_PUBLIC_COGNITO_CLIENT_ID,
    AWS_REGION: process.env.NEXT_PUBLIC_AWS_REGION,
    FIREBASE_API_KEY: process.env.NEXT_PUBLIC_FIREBASE_API_KEY,
    FIREBASE_AUTH_DOMAIN: process.env.NEXT_PUBLIC_FIREBASE_AUTH_DOMAIN,
    FIREBASE_DATABASE_URL: process.env.NEXT_PUBLIC_FIREBASE_DATABASE_URL,
    FIREBASE_PROJECT_ID: process.env.NEXT_PUBLIC_FIREBASE_PROJECT_ID,
    FIREBASE_STORAGE_BUCKET: process.env.NEXT_PUBLIC_FIREBASE_STORAGE_BUCKET,
    FIREBASE_MESSAGING_SENDER_ID: process.env.NEXT_PUBLIC_FIREBASE_MESSAGING_SENDER_ID,
    FIREBASE_APP_ID: process.env.NEXT_PUBLIC_FIREBASE_APP_ID,
    EMAILJS_SERVICE_ID: process.env.NEXT_PUBLIC_EMAILJS_SERVICE_ID,
    EMAILJS_TEMPLATE_ID: process.env.NEXT_PUBLIC_EMAILJS_TEMPLATE_ID,
    EMAILJS_USER_ID: process.env.NEXT_PUBLIC_EMAILJS_USER_ID,
  };
  
  export const env = {
    ...serverEnv,
    ...clientEnv,
  };