vite.config.ts

import { sentryVitePlugin } from '@sentry/vite-plugin';
import { defineConfig } from 'vite';
import react from '@vitejs/plugin-react';
import path, { resolve } from 'path';
import makeManifest from './utils/plugins/make-manifest';
import customDynamicImport from './utils/plugins/custom-dynamic-import';
import addHmr from './utils/plugins/add-hmr';
import watchRebuild from './utils/plugins/watch-rebuild';
import manifest from './manifest';

const rootDir = resolve(__dirname);
const srcDir = resolve(rootDir, 'src');
const pagesDir = resolve(srcDir, 'pages');
const assetsDir = resolve(srcDir, 'assets');
const outDir = resolve(rootDir, 'dist');
const publicDir = resolve(rootDir, 'public');

const isDev = process.env.__DEV__ === 'true';
const isProduction = !isDev;

// ENABLE HMR IN BACKGROUND SCRIPT
const enableHmrInBackgroundScript = true;

export default defineConfig({
  resolve: {
    alias: {
      '@root': rootDir,
      '@src': srcDir,
      '@assets': assetsDir,
      '@pages': pagesDir,
    },
  },
  plugins: [
    react(),
    makeManifest(manifest, {
      isDev,
      contentScriptCssKey: regenerateCacheInvalidationKey(),
    }),
    customDynamicImport(),
    addHmr({ background: enableHmrInBackgroundScript, view: true }),
    watchRebuild(),
    !isDev &&
      sentryVitePlugin({
        org: 'vkuprin',
        project: 'extension',
      }),
  ],
  publicDir,
  build: {
    outDir,

    /** Can slowDown build speed. */
    // sourcemap: isDev,
    minify: isProduction,

    modulePreload: false,
    reportCompressedSize: isProduction,

    rollupOptions: {
      input: {
        popup: resolve(pagesDir, 'popup', 'index.html'),
      },
      output: {
        entryFileNames: 'src/pages/[name]/index.js',
        chunkFileNames: isDev ? 'assets/js/[name].js' : 'assets/js/[name].[hash].js',
        assetFileNames: assetInfo => {
          const { dir, name: _name } = path.parse(assetInfo.name);
          const assetFolder = dir.split('/').at(-1);
          const name = assetFolder + firstUpperCase(_name);
          if (name === 'contentStyle') {
            return `assets/css/contentStyle${cacheInvalidationKey}.chunk.css`;
          }
          return `assets/[ext]/${name}.chunk.[ext]`;
        },
      },
    },

    sourcemap: true,
  },
});

function firstUpperCase(str: string) {
  const firstAlphabet = new RegExp(/( |^)[a-z]/, 'g');
  return str.toLowerCase().replace(firstAlphabet, L => L.toUpperCase());
}

let cacheInvalidationKey: string = generateKey();
function regenerateCacheInvalidationKey() {
  cacheInvalidationKey = generateKey();
  return cacheInvalidationKey;
}

function generateKey(): string {
  return `${(Date.now() / 100).toFixed()}`;
}