vite.config.js

import { resolve } from "path";
import { defineConfig } from "vite";
import vue from "@vitejs/plugin-vue2";

// https://vitejs.dev/config/
export default defineConfig({
  target: "es2016",
  plugins: [vue()],
  build: {
    lib: {
      // Could also be a dictionary or array of multiple entry points
      entry: resolve(__dirname, "resources/js/main.js"),
      name: "ExamplePlugin",
      // the proper extensions will be added
      fileName: "build",
      // important to generate Immediately Invoked Function Expression as output
      // this can be easily loaded via script tag and ensure it will be executed immediatelly
      // otherwise there would be risk that page will be rendered before plugin components gets registered
      formats: ["iife"],
    },
    outDir: resolve(__dirname, "public/build"),
    rollupOptions: {
      // make sure to externalize deps that shouldn't be bundled
      // into your library
      external: ["vue"],
      output: {
        // Provide global variables to use in the UMD build
        // for externalized deps
        globals: {
          vue: "pkp.Vue",
        },
      },
    },
  },
});