- 
Create a new ASP.NET Core Angular Project
dotnet new angular -o asp_vite - 
In the
ClientAppFolder, save the contents ofaspnetcore-https.js(or copy the file to somewhere outside of theClientAppfolder). - 
Create the vite app, choose overwrite target directory and choose the same package name you selected during the creation of the ASP.NET Core project:
npm init @vitejs/app ClientApp --template vue-ts npx: installed 6 in 1.6s √ Target directory "ClientApp" is not empty. Remove existing files and continue? ... yes √ Package name: ... asp_vite - 
Restore
aspnetcore-https.jsto the ClientApp directory. - 
Replace the contents of
vite.config.tswith: 
import { defineConfig } from 'vite'
import vue from '@vitejs/plugin-vue'
import { readFileSync } from 'fs'
import { join } from 'path';
const baseFolder =
  process.env.APPDATA !== undefined && process.env.APPDATA !== ''
    ? `${process.env.APPDATA}/ASP.NET/https`
    : `${process.env.HOME}/.aspnet/https`;
const certificateName = process.env.npm_package_name
const certFilePath = join(baseFolder, `${certificateName}.pem`);
const keyFilePath = join(baseFolder, `${certificateName}.key`);
// https://vitejs.dev/config/
export default defineConfig({
  plugins: [vue()],
  server: {
    https: {
      key: readFileSync(keyFilePath),
      cert: readFileSync(certFilePath)
    },
    port: 5002,
    strictPort: true,
    proxy: {
      '/api': {
        target: 'https://localhost:5001/',
        changeOrigin: true,
        secure: false
      }
    }
  }
})
- Add new start scripts to 
package.json: 
"scripts": {
	"prestart": "node ./aspnetcore-https.js", // <--- ADD
	"start": "vite --debug",				  // <--- ADD
	"dev": "vite",
	"build": "vue-tsc --noEmit && vite build",
	"serve": "vite preview"
}
- 
Run
npm installin theClientAppfolder - 
Back in project directory start the server with
dotnet run - 
Navigate to
https://localhost:5001/and observe your beautiful ASP.NET Core + Vite App 😎