vite.config.ts

import {sveltekit} from '@sveltejs/kit/vite';
import {defineConfig, searchForWorkspaceRoot} from 'vite';

import {execSync} from 'node:child_process';

const currentCommit = execSync('git rev-parse --short HEAD').toString();
const date = new Date();
const dateString = `${date.getFullYear()}.${date.getMonth() + 1}.${date.getDate()}`;

// A helper plugin which specifically watches for changes to public/dsp.main.js,
// which is built in a parallel watch job via esbuild during dev.
//
// We can still use Vite's HMR to send a custom reload-dsp event, which is caught
// inside the webview and propagated to native to reinitialize the embedded js engine.
//
// During production builds, this all gets pruned from the bundle.
function pubDirReloadPlugin() {
  return {
    name: 'pubDirReload',
    handleHotUpdate({file, modules, server}: {file: string; modules: any; server: any}) {
      if (file.includes('public/dsp.main.js')) {
        server.ws.send({
          type: 'custom',
          event: 'reload-dsp'
        });
      }

      return modules;
    }
  };
}

export default defineConfig({
  define: {
    __COMMIT_HASH__: JSON.stringify(currentCommit),
    __BUILD_DATE__: JSON.stringify(dateString)
  },
  plugins: [sveltekit(), pubDirReloadPlugin()],
  server: {
    fs: {
      allow: [
        // search up for workspace root
        searchForWorkspaceRoot(process.cwd()),
        // your custom rules
        './public/manifest.json'
      ]
    }
  }
});