How to change base URL to HTTP requests on Vite-Vue app - DEV mode

[wojciechfpga]

I want to change base URL of HTTP requests from host adress of Vite app ( http://localhost:5173) to host adress of my ASP .NET API (http://localhost:5815) on dev mode (npm run dev). But I have an error after making change in vite.config file inorder to redirect base URL to HTTP requests on dev mode:

vite.config file

import { fileURLToPath, URL } from 'node:url'

import { defineConfig } from 'vite'
import vue from '@vitejs/plugin-vue'

// https://vitejs.dev/config/
export default defineConfig({
  plugins: [
    vue(),
  ],
  build: {
    cssCodeSplit: false,
  },
  resolve: {
    alias: {
      '@': fileURLToPath(new URL('./src', import.meta.url))
    }
  },
  server: {
    proxy: {
      '/': {
        target: 'http://localhost:5815',
        changeOrigin: true,
        rewrite: (path) => path.replace(/^\//, '')
      }
    }
  }
})

How to change Remote Adress of HTP requests in dev mode (npm run dev)?

I mention only that similar project with only Vue, worked with this vue.config file:

const { defineConfig } = require('@vue/cli-service');

module.exports = defineConfig({
  transpileDependencies: true,
  lintOnSave: false,
  devServer: {
    proxy: 'http://localhost:5815',
  },
});