how to config multi-page with vite?

[w2819]

gitURL
I've configured a multi-page app, but I can't access the route with vue-router，how to config？

// env: vite/2.0.0-beta.64 win32-x64 node-v12.6.0
// vite.config.ts
import { defineConfig } from 'vite';
import { resolve } from 'path';
import vue from '@vitejs/plugin-vue';

const port = 3000;
export default defineConfig({
    plugins: [vue()],
    build: {
        rollupOptions: {
            input: {
                main: resolve(__dirname, 'main.html'),
                about: resolve(__dirname, 'about.html'),
                nested: resolve(__dirname, 'nested/index.html'),
            }
        }
    },
    server: {
        port,
    }
});

[kasec]

You have read this vite ssr example?
Or this [SSG plugin] (https://github.com/antfu/vite-ssg)

[w2819]

my project is from vue2.0, i cant use ssr in it