vite.config.ts

import { defineConfig } from "vite";
import react from "@vitejs/plugin-react-swc";
import officeAddin from "vite-plugin-office-addin";
import eslint from "vite-plugin-eslint";
import { nodePolyfills } from 'vite-plugin-node-polyfills';

const devCerts = require("office-addin-dev-certs");

async function getHttpsOptions() {
  const httpsOptions = await devCerts.getHttpsServerOptions();
  return { ca: httpsOptions.ca, key: httpsOptions.key, cert: httpsOptions.cert };
}

// https://vitejs.dev/config/
export default defineConfig(async ({mode}) => ({
  plugins: [react(), eslint(), 
    officeAddin({
      devUrl: "https://localhost:3000",
      prodUrl: "https://www.contoso.com" // CHANGE THIS TO YOUR PRODUCTION DEPLOYMENT LOCATION
    }),
    nodePolyfills({
      exclude: [
        'fs', // Excludes the polyfill for `fs` and `node:fs`.
      ],
      // Whether to polyfill specific globals (true, false, 'build' or 'dev')
      globals: {
        Buffer: true,
        global: true,
        process: true,
      },
      protocolImports: true, // polyfill any `node:` protocol imports.
    })],
  root: "src",
  build: {
    rollupOptions: {
      input: {
        "taskpane": "/taskpane/taskpane.html"
      },
    },
    outDir: "../dist",
    emptyOutDir: true
  },
  server: mode !== "production" ? { https: await getHttpsOptions() } : {}
}));