next.config.ts

import {withSentryConfig} from '@sentry/nextjs';
import dotenv from 'dotenv';
dotenv.config({ path: '.env.local' });

const nextConfig = {
  reactStrictMode: true, // Temporarily disabled for testing

  // Enable response compression for better performance
  compress: true,
  
  // Performance optimizations
  poweredByHeader: false, // Remove X-Powered-By header for security and performance
  
  // Build optimizations (swcMinify is now default in Next.js 15)
  
  images: {
    // Enable modern image formats for better compression
    formats: ['image/avif', 'image/webp'],
    
    // Allowed remote image sources (domains is deprecated)
    remotePatterns: process.env.BLOB_STORAGE_HOSTNAME
      ? [
        {
          protocol: 'https',
          hostname: process.env.BLOB_STORAGE_HOSTNAME,
          pathname: '/**',
        },
      ]
      : [],
    
    // Device sizes for responsive images
    deviceSizes: [640, 750, 828, 1080, 1200, 1920, 2048],
    
    // Image sizes for different breakpoints
    imageSizes: [16, 32, 48, 64, 96, 128, 256, 384],
    
    // Minimize layout shift by enforcing size requirements
    minimumCacheTTL: 60,
  },
  
  // Enable experimental features for better performance
  experimental: {
    // Optimize server components
    optimizeServerReact: true,
  },
  
  // Turbopack configuration (moved from experimental.turbo)
  turbopack: {
    resolveAlias: {
      // Reduce bundle size by aliasing large dependencies
      'react-icons/lib': 'react-icons',
    },
  },

  // Production optimizations
  ...(process.env.NODE_ENV === 'production' && {
    output: 'standalone', // Optimize for deployment
    
    // Webpack optimizations
    webpack: (config: any) => {
      // Enable module concatenation for smaller bundles
      config.optimization = {
        ...config.optimization,
        usedExports: true,
        sideEffects: false,
        
        // Split chunks for better caching
        splitChunks: {
          ...config.optimization?.splitChunks,
          chunks: 'all',
          cacheGroups: {
            ...config.optimization?.splitChunks?.cacheGroups,
            // Separate vendor chunks
            vendor: {
              test: /[\\/]node_modules[\\/]/,
              name: 'vendors',
              chunks: 'all',
              priority: 10,
            },
          },
        }
      };
      
      return config;
    },
  }),
};

export default withSentryConfig(nextConfig, {
  // For all available options, see:
  // https://www.npmjs.com/package/@sentry/webpack-plugin#options

  org: process.env.SENTRY_ORG,

  project: process.env.SENTRY_PROJECT,

  // Only print logs for uploading source maps in CI
  silent: !process.env.CI,

  // For all available options, see:
  // https://docs.sentry.io/platforms/javascript/guides/nextjs/manual-setup/

  // Upload a larger set of source maps for prettier stack traces (increases build time)
  widenClientFileUpload: true,

  // Uncomment to route browser requests to Sentry through a Next.js rewrite to circumvent ad-blockers.
  // This can increase your server load as well as your hosting bill.
  // Note: Check that the configured route will not match with your Next.js middleware, otherwise reporting of client-
  // side errors will fail.
  // tunnelRoute: "/monitoring",

  // Automatically tree-shake Sentry logger statements to reduce bundle size
  disableLogger: true,

  // Enables automatic instrumentation of Vercel Cron Monitors. (Does not yet work with App Router route handlers.)
  // See the following for more information:
  // https://docs.sentry.io/product/crons/
  // https://vercel.com/docs/cron-jobs
  automaticVercelMonitors: true,
});