vite.config.ts

import { defineConfig } from "vite";

import url from "node:url";
import { join, resolve } from "node:path";
import { readFileSync } from "node:fs";
import { nodeBuiltIns } from "../core/utils/config";

const __dirname = url.fileURLToPath(new URL('.', import.meta.url));

const pkg = JSON.parse(readFileSync('package.json').toString())
const pkgCore = JSON.parse(readFileSync(join('..', 'core', 'package.json')).toString())

const external = new Set([
  ...Object.keys(pkg.dependencies),
  ...Object.keys(pkgCore.dependencies),
  ...nodeBuiltIns
])

export default defineConfig({
  build: {
    emptyOutDir: false, // This is required so we always have permission to execute the development version that is installed in the global node_modules
    target: 'node16',
    lib: {
      // Could also be a dictionary or array of multiple entry points
      entry: resolve(__dirname, 'index'),
      name: 'commoners',
      formats: [ 'es', 'cjs' ],
      fileName: (format) => `index.${format == 'es' ? 'mjs' : 'cjs'}`,
    },
    rollupOptions: {
      external: Array.from(external),
    },
  },
})