npm install -g create-react-app
create-react-app my-app
cd my-app
npm start
创建完成后文件的结构如下:
public/favicon.ico
html的ico 图标,在index.html中会有引入;
可以使用图片,通过线上ico图标制作出,
.ico图标来替换react默认的public/manifest.json
app配置文件,设置icons,首页路径等;
src/index.js 是入口文件
src/App.js是最大的组件App
src/registerserviceworker.js 用来做资源离线的缓存,
注意:registerServiceWorker注册的service worker 只在生产环境(正式环境)中生效。
① npm start 启动项目,在 http://localhost:3000查看项目运行
② npm run build 项目打包,生成一个build文件夹,如下
③ npm run eject 弹出配置文件--不可逆操作--用于修改默认的配置
当对react-script配置好的构建工具和配置项不满意时使用这个命令,他将命令运行的脚本js分离出来,输入命令时指向的是这些脚本,你可以根据情况调整这些代码。
④ npm test --测试
npm install antd --save
//或者
npm install antd-mobile --save
2、引入 react-app-rewired 并修改 package.json 里的启动配置:
npm install react-app-rewired --save-dev
/* package.json */
"scripts": {
- "start": "react-scripts start",
+ "start": "react-app-rewired start",
- "build": "react-scripts build",
+ "build": "react-app-rewired build",
- "test": "react-scripts test --env=jsdom",
+ "test": "react-app-rewired test --env=jsdom",
}
module.exports = function override(config, env) {
// do stuff with the webpack config...
return config;
};
babel-plugin-import 是一个用于按需加载组件代码和样式的 babel 插件(原理),现在我们尝试安装它并修改 config-overrides.js 文件。
npm install babel-plugin-import --save-dev
+ const { injectBabelPlugin } = require('react-app-rewired');
module.exports = function override(config, env) {
+ config = injectBabelPlugin(['import', { libraryName: 'antd-mobile', style: 'css' }], config);
return config;
};
- import Button from 'antd-mobile/lib/button';
+ import { Button } from 'antd-mobile';
npm install less-loader less --save-dev
npm install --save-dev react-app-rewire-less
/* config-overrides.js */
const { injectBabelPlugin } = require('react-app-rewired');
+ const rewireLess = require('react-app-rewire-less');
module.exports = function override(config, env) {
config = injectBabelPlugin(['import', { libraryName: 'antd', libraryDirectory: 'es', style: 'css' }], config);
+ config = rewireLess.withLoaderOptions({modifyVars: { "@primary-color": "#1DA57A" }})(config, env);
return config;
};
npm run eject
弹出的配置文件如下,弹出了config文件夹和scripts文件夹
config文件夹----中的配置文件可供修改
scripts文件夹----作为命令对应要运行的文件
弹出后注意修改package.json 里启动命令的配置
"scripts": {
"start": "node scripts/start.js",
"build": "node scripts/build.js",
"test": "node scripts/test.js --env=jsdom"
},
npm install antd --save
//或者
npm install antd-mobile --save
npm install babel-plugin-import --save-dev
"babel": {
"presets": [
"react-app"
],
+ "plugins": [
+ [
+ "import",
+ {
+ "libraryName": "antd",
+ "style": "css"
+ }
+ ]
+ ],
},
或者根目录下新建一个.babelrc,
写入如下的代码,这个文件将把package.json的babel的配置对象完全覆盖掉
{
"presets": [
"react-app"
],
"plugins": [
[
"import",
{
"libraryName": "antd",
"style": "css"
}
]
]
}
npm install less-loader less --save-dev
找到根目录下的config文件夹下的webpack.config.dev.js 和 webpack.config-prod.js
exclude的数组中/.css$/ 改为 /.(css|less)$/
/.(css|less)$/下的use数组中增加less-loader
use: [
{
loader: require.resolve('css-loader'),
options: {
importLoaders: 1,
minimize: true,
sourceMap: shouldUseSourceMap,
},
},
{
loader: require.resolve('postcss-loader'),
options: {
// Necessary for external CSS imports to work
// https://github.com/facebookincubator/create-react-app/issues/2677
ident: 'postcss',
plugins: () => [
require('postcss-flexbugs-fixes'),
autoprefixer({
browsers: [
'>1%',
'last 4 versions',
'Firefox ESR',
'not ie < 9', // React doesn't support IE8 anyway
],
flexbox: 'no-2009',
}),
],
},
},
+ {
+ loader: require.resolve('less-loader') // compiles Less to CSS
+ }
],