vite基本常见的配置讲解

import { defineConfig } from 'vite'
export default defineConfig({
  // ...
})

export default defineConfig(({ command, mode, ssrBuild }) => {
  if (command === 'serve') {
    return {
      // dev 独有配置
    }
  } else {
    // command === 'build'
    return {
      // build 独有配置
    }
  }
})

const root: string = process.cwd();
export default defineConfig(({ command, mode, ssrBuild }) => {
  return {
    root,
    plugins: [react()]
  };
});

import react from "@vitejs/plugin-react";
const root: string = process.cwd();
export default defineConfig(({ command, mode, ssrBuild }) => {
  const { VITE_PUBLIC_PATH, VITE_PORT } = loadEnv(mode, process.cwd(), "");
  return {
    base: VITE_PUBLIC_PATH,
    root,
    plugins: [react()]
  };
});

import { defineConfig, loadEnv } from "vite";
import react from "@vitejs/plugin-react";
import { resolve } from "path";

const root: string = process.cwd();

// 查找路径
const pathResolve = (dir: string): string => {
  return resolve(__dirname, ".", dir);
};
// 别名
const alias: Record<string, string> = {
  "@": pathResolve("src"),
  "@build": pathResolve("build"),
};
// https://vitejs.dev/config/
export default defineConfig(({ command, mode, ssrBuild }) => {
  const { VITE_PUBLIC_PATH, VITE_PORT } = loadEnv(mode, process.cwd(), "");
  return {
    base: VITE_PUBLIC_PATH,
    root,
    plugins: [react()],
    resolve: {
      alias,
    },
  };
});

export default defineConfig({
  server: {
    proxy: {
      // 字符串简写写法：http://localhost:5173/foo -> http://localhost:4567/foo
      '/foo': 'http://localhost:4567',
      // 带选项写法：http://localhost:5173/api/bar -> http://jsonplaceholder.typicode.com/bar
      '/api': {
        target: 'http://jsonplaceholder.typicode.com',
        changeOrigin: true,
        rewrite: (path) => path.replace(/^\/api/, ''),
      },
      // 正则表达式写法：http://localhost:5173/fallback/ -> http://jsonplaceholder.typicode.com/
      '^/fallback/.*': {
        target: 'http://jsonplaceholder.typicode.com',
        changeOrigin: true,
        rewrite: (path) => path.replace(/^\/fallback/, ''),
      },
      // 使用 proxy 实例
      '/api': {
        target: 'http://jsonplaceholder.typicode.com',
        changeOrigin: true,
        configure: (proxy, options) => {
          // proxy 是 'http-proxy' 的实例
        }
      },
      // 代理 websockets 或 socket.io 写法：ws://localhost:5173/socket.io -> ws://localhost:5174/socket.io
      '/socket.io': {
        target: 'ws://localhost:5174',
        ws: true,
      },
    },
  },
})