1  import { defineConfig } from 'vite';
 2  
 3  export default defineConfig({
 4    build: {
 5      emptyOutDir: false,
 6      ssr: true,
 7      target: 'es2020',
 8      outDir: 'build',
 9      rollupOptions: {
10        input: {
11          telemetry: 'src/telemetry.ts',
12        },
13      },
14      lib: {
15        formats: ['cjs'],
16        entry: 'src/telemetry.ts',
17      },
18    },
19  });