vue-mod-page/vite.config.ts

import { defineConfig } from 'vite'
import vue from '@vitejs/plugin-vue'
import vueJsx from '@vitejs/plugin-vue-jsx'

import vue2 from '@vitejs/plugin-vue2'
import vue2Jsx from '@vitejs/plugin-vue2-jsx'
import { isVue2, isVue3, version } from 'vue-demi'
import path from 'node:path'
import { createRequire } from 'node:module'

const resolve = (str: string) => {
  return path.resolve(__dirname, str)
}
console.log('vue', version)

function getV2Compiler() {
  const req = createRequire(import.meta.url);
  const rt = req.resolve("./node_modules/vue2/compiler-sfc");
  console.log(rt);
  const c = req(rt)
  console.log(c);
  return c;
}

// https://vite.dev/config/
export default defineConfig({
  plugins: isVue3 ?
    [vue(), vueJsx()] :
    [vue2({ compiler: getV2Compiler() }), vue2Jsx()],
  resolve: {
    alias: {
      vue: isVue2 ? resolve('./node_modules/vue2') : resolve('./node_modules/vue'),
    }
  },
  optimizeDeps: {
    exclude: ['vue-demi']
  }
})