vite.config.ts

import { defineConfig } from "vite";
import dts from "vite-plugin-dts";
import path from "node:path";
import { viteStaticCopy } from "vite-plugin-static-copy";
import fs from "node:fs";

export default defineConfig({
  build: {
    lib: {
      entry: path.resolve(import.meta.dirname, "src/index.ts"),
      formats: ["es"],
      fileName: () => "index.js",
    },
    rollupOptions: {
      external: ["astro"],
    },
  },
  plugins: [
    dts({
      afterBuild: () => {
        const indexDtsPath = path.resolve(import.meta.dirname, "dist/index.d.ts");

        if (fs.existsSync(indexDtsPath)) {
          const currentContent = fs.readFileSync(indexDtsPath, "utf-8");
          const referenceLine = `/// <reference path="./public.d.ts" />`;

          if (!currentContent.includes(referenceLine)) {
            const newContent = `${referenceLine}\n${currentContent}`;
            fs.writeFileSync(indexDtsPath, newContent);
          }
        }
      },
    }),
    viteStaticCopy({
      targets: [
        {
          src: "src/live-preview/middleware.ts",
          dest: "live-preview",
          rename: { stripBase: true },
        },
        { src: "src/dev-toolbar/toolbarApp.ts", dest: "dev-toolbar", rename: { stripBase: true } },
        {
          src: ["src/lib/client.ts"],
          dest: "lib",
          rename: { stripBase: true },
        },
        { src: "src/public.d.ts", dest: ".", rename: { stripBase: true } },
        {
          src: ["src/components/**/*.astro"],
          dest: "components",
          rename: { stripBase: 2 }, // strip the `src/components` prefix, preserve any nesting below it
        },
      ],
    }),
  ],
});