vite-plugin-esm2cjs

packages/main/vite.config.ts

@@ -1,9 +1,16 @@
 import { builtinModules } from 'module'
 import { defineConfig } from 'vite'
+import esm2cjs from '../../scripts/vite-plugin-esm2cjs'
 import pkg from '../../package.json'
 
 export default defineConfig({
   root: __dirname,
+  plugins: [
+    esm2cjs([
+      'execa',
+      'node-fetch',
+    ]),
+  ],
   build: {
     outDir: '../../dist/main',
     lib: {

scripts/vite-plugin-esm2cjs.ts

@@ -0,0 +1,40 @@
+import { builtinModules } from 'module'
+import { Plugin, build } from 'vite'
+import resolve from 'vite-plugin-resolve'
+
+export default function esm2cjs(modules: string[]): Plugin {
+  return resolve({
+    ...modules.reduce((memo, moduleId) => Object.assign(memo, {
+      async [moduleId](args) {
+        await build({
+          plugins: [
+            {
+              name: 'vite-plugin[node:mod-to-mod]',
+              enforce: 'pre',
+              resolveId(source) {
+                if (source.startsWith('node:')) {
+                  return source.replace('node:', '')
+                }
+              },
+            }
+          ],
+          build: {
+            outDir: args.dir,
+            minify: false,
+            emptyOutDir: false,
+            lib: {
+              entry: require.resolve(moduleId),
+              formats: ['cjs'],
+              fileName: () => `${moduleId}.js`,
+            },
+            rollupOptions: {
+              external: [
+                ...builtinModules,
+              ],
+            },
+          },
+        })
+      },
+    } as Parameters<typeof resolve>[0]), {}),
+  })
+}