vite.config.ts

import { defineConfig } from 'vite'
import react from '@vitejs/plugin-react'
import { resolve } from 'path'

const host = process.env.TAURI_DEV_HOST

// https://vitejs.dev/config/
export default defineConfig(async () => ({
  plugins: [react()],
  resolve: {
    alias: {
      '@': resolve(__dirname, './src'),
    },
  },
  css: {
    preprocessorOptions: {
      scss: {
        api: 'modern-compiler', // or "modern"
      },
    },
  },
  build: {
    rollupOptions: {
      input: ['./index.html', './picker.html'],
    },
  },

  // Vite options tailored for Tauri development and only applied in `tauri dev` or `tauri build`
  //
  // 1. prevent vite from obscuring rust errors
  clearScreen: false,
  // 2. tauri expects a fixed port, fail if that port is not available
  server: {
    port: 1420,
    strictPort: true,
    host: host || false,
    hmr: host
      ? {
          protocol: 'ws',
          host,
          port: 1421,
        }
      : undefined,
    watch: {
      // 3. tell vite to ignore watching `src-tauri`
      ignored: ['**/src-tauri/**'],
    },
  },
}))