react3.x配置樣式按需引入和自定義主題

安裝依賴包

yarn add react-app-rewired customize-cra babel-plugin-import less [email protected]

修改package.json

"scripts": {
    "start": "react-app-rewired start",
    "build": "react-app-rewired build",
    "test": "react-app-rewired test",
    "eject": "react-scripts eject"
  },
 

新增配置檔案

在根目錄下建立config-overrides.js檔案

config-overrides.js檔案內容

const {override, fixBabelImports, addLessLoader} = require('customize-cra');
module.exports = override(
    fixBabelImports('import', {
        libraryName: 'antd',
        libraryDirectory: 'es',
        style: true,
    }),
    addLessLoader({
        lessOptions: {
            javascriptEnabled: 
 
true,
            modifyVars: {'@primary-color': '#1DA57A'},
        }
    }),
);

啟動專案

App.js

import React, {Component} from 'react';
// 引入antd
import { Button, Icon } from 'antd';
import './App.css';

class App extends Component {
    render() {
        return (
            <div>
                App.....
                App.....
                App.....
                
 
<Icon type="smile" theme="twoTone" />
                <Button type="primary">Primary Button</Button>
            </div>
        );
    }
}

export default App;

index.js

import React from 'react';
import ReactDOM from 'react-dom';
import App from './App';

ReactDOM.render(<App/>, document.getElementById('root'));

效果

看到綠色按鈕就代表成功了！

注意內容

啟動專案，如果遇到報錯，可能是less-loader這個包的版本太高了，語法有問題。所以解除安裝之後，安裝作者測試的版本即可正常啟動