weseek__growi/apps/app/next.config.ts

/**
 * == Notes for production build==
 * The modules required from this file must be transpiled before running `next build`.
 *
 * See: https://github.com/vercel/next.js/discussions/35969#discussioncomment-2522954
 */

import type { NextConfig } from 'next';
import {
  PHASE_PRODUCTION_BUILD,
  PHASE_PRODUCTION_SERVER,
} from 'next/constants';
import path from 'node:path';
import bundleAnalyzer from '@next/bundle-analyzer';

import nextI18nConfig from './config/next-i18next.config';
import { listPrefixedPackages } from './src/utils/next.config.utils';

const { i18n } = nextI18nConfig;

const getTranspilePackages = (): string[] => {
  const packages = [
    // listing ESM packages until experimental.esmExternals works correctly to avoid ERR_REQUIRE_ESM
    'react-markdown',
    'unified',
    'markdown-table',
    'bail',
    'ccount',
    'character-entities',
    'character-entities-html4',
    'character-entities-legacy',
    'comma-separated-tokens',
    'decode-named-character-reference',
    'devlop',
    'fault',
    'escape-string-regexp',
    'hastscript',
    'html-void-elements',
    'is-absolute-url',
    'is-plain-obj',
    'longest-streak',
    'micromark',
    'property-information',
    'space-separated-tokens',
    'stringify-entities',
    'trim-lines',
    'trough',
    'web-namespaces',
    'vfile',
    'vfile-location',
    'vfile-message',
    'zwitch',
    'emoticon',
    'direction', // for hast-util-select
    'bcp-47-match', // for hast-util-select
    'parse-entities',
    'character-reference-invalid',
    'is-hexadecimal',
    'is-alphabetical',
    'is-alphanumerical',
    'github-slugger',
    'html-url-attributes',
    'estree-util-is-identifier-name',
    'superjson',
    ...listPrefixedPackages([
      'remark-',
      'rehype-',
      'hast-',
      'mdast-',
      'micromark-',
      'unist-',
    ]),
  ];

  return packages;
};

const optimizePackageImports: string[] = [
  '@growi/core',
  '@growi/editor',
  '@growi/pluginkit',
  '@growi/presentation',
  '@growi/preset-themes',
  '@growi/remark-attachment-refs',
  '@growi/remark-drawio',
  '@growi/remark-growi-directive',
  '@growi/remark-lsx',
  '@growi/slack',
  '@growi/ui',
];

export default (phase: string): NextConfig => {
  /** @type {import('next').NextConfig} */
  const nextConfig: NextConfig = {
    reactStrictMode: true,
    poweredByHeader: false,
    pageExtensions: ['page.tsx', 'page.ts', 'page.jsx', 'page.js'],
    i18n,

    serverExternalPackages: [
      'handsontable', // Legacy v6.2.2 requires @babel/polyfill which is unavailable; client-only via dynamic import
    ],

    // for build
    typescript: {
      tsconfigPath: 'tsconfig.build.client.json',
    },
    transpilePackages:
      phase !== PHASE_PRODUCTION_SERVER ? getTranspilePackages() : undefined,
    sassOptions: {
      loadPaths: [path.resolve(__dirname, 'src')],
    },
    experimental: {
      optimizePackageImports,
    },

    turbopack: {
      rules: {
        // Server-only: auto-wrap getServerSideProps with SuperJSON serialization
        '*.page.ts': [
          {
            condition: { not: 'browser' },
            loaders: [
              path.resolve(__dirname, 'src/utils/superjson-ssr-loader.ts'),
            ],
            as: '*.ts',
          },
        ],
        '*.page.tsx': [
          {
            condition: { not: 'browser' },
            loaders: [
              path.resolve(__dirname, 'src/utils/superjson-ssr-loader.ts'),
            ],
            as: '*.tsx',
          },
        ],
      },
      resolveAlias: {
        // Exclude fs from client bundle
        fs: { browser: './src/lib/empty-module.ts' },
        // Exclude server-only packages from client bundle
        'dtrace-provider': { browser: './src/lib/empty-module.ts' },
        mongoose: { browser: './src/lib/empty-module.ts' },
        'i18next-fs-backend': { browser: './src/lib/empty-module.ts' },
        bunyan: { browser: './src/lib/empty-module.ts' },
        'bunyan-format': { browser: './src/lib/empty-module.ts' },
        'core-js': { browser: './src/lib/empty-module.ts' },
      },
    },
  };

  // production server — skip bundle analyzer
  if (phase === PHASE_PRODUCTION_SERVER) {
    return nextConfig;
  }

  const withBundleAnalyzer = bundleAnalyzer({
    enabled:
      phase === PHASE_PRODUCTION_BUILD &&
      (process.env.ANALYZE === 'true' || process.env.ANALYZE === '1'),
  });

  return withBundleAnalyzer(nextConfig);
};