next.config.mjs

import analyzer from '@next/bundle-analyzer';
import { withSentryConfig } from '@sentry/nextjs';
import withSerwistInit from '@serwist/next';

const isProd = process.env.NODE_ENV === 'production';
const buildWithDocker = process.env.DOCKER === 'true';

// if you need to proxy the api endpoint to remote server
const API_PROXY_ENDPOINT = process.env.API_PROXY_ENDPOINT || '';

const basePath = process.env.NEXT_PUBLIC_BASE_PATH;

/** @type {import('next').NextConfig} */
const nextConfig = {
  basePath,
  compress: isProd,
  experimental: {
    optimizePackageImports: [
      'emoji-mart',
      '@emoji-mart/react',
      '@emoji-mart/data',
      '@icons-pack/react-simple-icons',
      '@lobehub/ui',
      'gpt-tokenizer',
      'chroma-js',
    ],
    webVitalsAttribution: ['CLS', 'LCP'],
  },

  async headers() {
    return [
      {
        headers: [
          {
            key: 'Cache-Control',
            value: 'public, max-age=31536000, immutable',
          },
        ],
        source: '/icons/(.*).(png|jpe?g|gif|svg|ico|webp)',
      },
      {
        headers: [
          {
            key: 'Cache-Control',
            value: 'public, max-age=31536000, immutable',
          },
        ],
        source: '/images/(.*).(png|jpe?g|gif|svg|ico|webp)',
      },
      {
        headers: [
          {
            key: 'Cache-Control',
            value: 'public, max-age=31536000, immutable',
          },
        ],
        source: '/videos/(.*).(mp4|webm|ogg|avi|mov|wmv|flv|mkv)',
      },
      {
        headers: [
          {
            key: 'Cache-Control',
            value: 'public, max-age=31536000, immutable',
          },
        ],
        source: '/screenshots/(.*).(png|jpe?g|gif|svg|ico|webp)',
      },
      {
        headers: [
          {
            key: 'Cache-Control',
            value: 'public, max-age=31536000, immutable',
          },
        ],
        source: '/og/(.*).(png|jpe?g|gif|svg|ico|webp)',
      },
      {
        headers: [
          {
            key: 'Cache-Control',
            value: 'public, max-age=31536000, immutable',
          },
        ],
        source: '/favicon.ico',
      },
      {
        headers: [
          {
            key: 'Cache-Control',
            value: 'public, max-age=31536000, immutable',
          },
        ],
        source: '/favicon-32x32.ico',
      },
      {
        headers: [
          {
            key: 'Cache-Control',
            value: 'public, max-age=31536000, immutable',
          },
        ],
        source: '/apple-touch-icon.png',
      },
    ];
  },

  output: buildWithDocker ? 'standalone' : undefined,
  reactStrictMode: true,
  redirects: async () => [
    {
      destination: '/sitemap-index.xml',
      permanent: true,
      source: '/sitemap.xml',
    },
    {
      destination: '/sitemap-index.xml',
      permanent: true,
      source: '/sitemap-0.xml',
    },
    {
      destination: '/manifest.webmanifest',
      permanent: true,
      source: '/manifest.json',
    },
    {
      destination: '/discover/assistant/:slug',
      has: [
        {
          key: 'agent',
          type: 'query',
          value: '(?<slug>.*)',
        },
      ],
      permanent: true,
      source: '/market',
    },
    {
      destination: '/discover/assistants',
      permanent: true,
      source: '/discover/assistant',
    },
    {
      destination: '/discover/models',
      permanent: true,
      source: '/discover/model',
    },
    {
      destination: '/discover/plugins',
      permanent: true,
      source: '/discover/plugin',
    },
    {
      destination: '/discover/providers',
      permanent: true,
      source: '/discover/provider',
    },
    {
      destination: '/settings/common',
      permanent: true,
      source: '/settings',
    },
    {
      destination: '/chat',
      permanent: true,
      source: '/welcome',
    },
  ],

  rewrites: async () => [
    // due to google api not work correct in some countries
    // we need a proxy to bypass the restriction
    { destination: `${API_PROXY_ENDPOINT}/api/chat/google`, source: '/api/chat/google' },
  ],

  webpack(config) {
    config.experiments = {
      asyncWebAssembly: true,
      layers: true,
    };

    // to fix shikiji compile error
    // refs: https://github.com/antfu/shikiji/issues/23
    config.module.rules.push({
      resolve: {
        fullySpecified: false,
      },
      test: /\.m?js$/,
      type: 'javascript/auto',
    });

    // https://github.com/pinojs/pino/issues/688#issuecomment-637763276
    config.externals.push('pino-pretty');

    config.resolve.alias.canvas = false;

    return config;
  },
};

const noWrapper = (config) => config;

const withBundleAnalyzer = process.env.ANALYZE === 'true' ? analyzer() : noWrapper;

const withPWA = isProd
  ? withSerwistInit({
      register: false,
      swDest: 'public/sw.js',
      swSrc: 'src/app/sw.ts',
    })
  : noWrapper;

const hasSentry = !!process.env.NEXT_PUBLIC_SENTRY_DSN;
const withSentry =
  isProd && hasSentry
    ? (c) =>
        withSentryConfig(
          c,
          {
            org: process.env.SENTRY_ORG,

            project: process.env.SENTRY_PROJECT,
            // For all available options, see:
            // https://github.com/getsentry/sentry-webpack-plugin#options
            // Suppresses source map uploading logs during build
            silent: true,
          },
          {
            // Enables automatic instrumentation of Vercel Cron Monitors.
            // See the following for more information:
            // https://docs.sentry.io/product/crons/
            // https://vercel.com/docs/cron-jobs
            automaticVercelMonitors: true,

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

            // Hides source maps from generated client bundles
            hideSourceMaps: true,

            // Transpiles SDK to be compatible with IE11 (increases bundle size)
            transpileClientSDK: true,

            // Routes browser requests to Sentry through a Next.js rewrite to circumvent ad-blockers. (increases server load)
            // Note: Check that the configured route will not match with your Next.js middleware, otherwise reporting of client-
            // side errors will fail.
            tunnelRoute: '/monitoring',

            // 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,
          },
        )
    : noWrapper;

export default withBundleAnalyzer(withPWA(withSentry(nextConfig)));