react-typescript的一些简单使用，引入antd、redux，按需加载

react脚手架typescript版本整合redux、antd按需加载的简单使用(如有侵权，请联系我)

1.下载create-react-app

cnpm i create-react-app -g //全局下载react脚手架,mac用户加上sudo

2.创建react项目(注意：进入启动测试一下项目是否能正常运行)

create-react-app ts-react-study --typescript //--typescript创建脚手架默认引入typescript

3.引入antd，配置按需加载(antd官方有介绍，可以去官方api查看,这里就不用贴了，相信到这里的都是大佬，也可以继续看下去) antdAPI官网链接

cnpm i antd --save //antd就是typescript写的，不需要引入@types/antd这样的依赖

4.引入react-app-rewired、babel-plugin-import、customize-cra依赖配置按需加载

cnpm i react-app-rewired babel-plugin-import customize-cra --save

5.创建一个config-overrides.js文件在根目录下

config-overrides.js文件代码如下

const { override, fixBabelImports,addLessLoader } = require("customize-cra");

module.exports = override(
    // addDecoratorsLegacy(),//使用装饰器 //需要引入@babel/plugin-proposal-decorators依赖，next ts可以使用 react ts版本无法使用
    fixBabelImports("import", { libraryName: 'antd', style: true }),//style为true则表示使用未编译的less样式，这是可以定制主题色了
    addLessLoader({
        javascriptEnabled: true,
        modifyVars: { '@primary-color': 'red' }//配置主题色
    })
);

6.这时候重新启动会报错，这时候我们还需要less和less-loader,这样就不会报错了

cnpm i less less-loader --save

7.修改package.json文件(把scripts下面的start、test、build替换如下代码)

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

重新启动项目 引入antd测试一下样式是否自动导入(修改index.tsx文件)

import React from 'react';
import ReactDOM from 'react-dom';
import {Button} from 'antd';

const Root: React.FC = () => (
    <Button>按钮</Button>
);
ReactDOM.render(<Root />, document.getElementById('root') as HTMLElement);

8.如需要使用scss的大佬，可以直接引入，react脚手架内部有对应的配置

cnpm i sass sass-loader node-sass -D

然后创建一个scss文件测试一下样式是否生效

9.引入react-router-dom路由

cnpm i react-router-dom @types/react-router-dom --save

10.引入redux、react-redux、react-thunk（重点使用）

cnpm i redux react-redux react-thunk @types/react-redux @types/react-thunk -D

11.制作一个简单的计数器案例

11.1创建store目录在src下面

11.2创建actions.ts文件

import { INCREMENT_COUNTER, DECREMENT_COUNTER, INCREMENT_ACTION_TYPE, DECREMENT_ACTION_TYPE } from './types';
import { Dispatch } from 'redux';

const incrementCount = (number: number): INCREMENT_ACTION_TYPE => ({ type: INCREMENT_COUNTER, number });
//异步action
export const asyncIncrementCount = (number: number) => (dispatch: Dispatch<INCREMENT_ACTION_TYPE>) => {
    setTimeout(() => dispatch(incrementCount(number)), 1000);
}
export const decrementCount = (number: number): DECREMENT_ACTION_TYPE => ({ type: DECREMENT_COUNTER, number });

11.3创建reducers.ts文件

import { ACTION_TYPE, INCREMENT_COUNTER, DECREMENT_COUNTER } from "./types";

interface CountState {
    count: number
}
export const initialState: CountState = {
    count: 0
}
export function countReducer(state = initialState, action: ACTION_TYPE):CountState {
    switch (action.type) {
        case INCREMENT_COUNTER:
            return { ...state, count: state.count + action.number };
        case DECREMENT_COUNTER:
            return { ...state, count: state.count - action.number };
        default:
            return state;
    }
}

11.4创建types.ts文件

export const INCREMENT_COUNTER = "INCREMENT_COUNTER";
export type INCREMENT_COUNTER = typeof INCREMENT_COUNTER;

export const DECREMENT_COUNTER = "DECREMENT_COUNTER";
export type DECREMENT_COUNTER = typeof DECREMENT_COUNTER;

// action类型
export interface INCREMENT_ACTION_TYPE{
    type:INCREMENT_COUNTER;
    number:number;
}
export interface DECREMENT_ACTION_TYPE{
    type:DECREMENT_COUNTER;
    number:number;
}
export type ACTION_TYPE = INCREMENT_ACTION_TYPE | DECREMENT_ACTION_TYPE;//reducer的action接收的类型

11.5创建index.ts文件

import { createStore, combineReducers, applyMiddleware } from "redux";
import thunk from 'redux-thunk';
import { countReducer, initialState } from "./reducers";
const reducers = combineReducers({
    countReducer
});
//引入组合后的
export type reducerType = ReturnType<typeof reducers>;//获取合并后的reducers类型
//第一个参数就是组合后的reducers 第二个参数就是默认值 第三个就是异步的thunk那些
export default createStore(reducers, {
    countReducer:initialState
}, applyMiddleware(thunk));

11.6创建hello.tsx在component目录下

import React, { Component } from 'react';
import { Button, Input } from 'antd';
interface State {
    name: string,
    value: string,
    [name: string]: number | string
}
interface Props {
    title: string;
    content?: string;
    handleMsg: Function;
}
export default class Hello extends Component<Props, State>{
    public constructor(props: Props) {
        super(props);
    }
    //只读属性只能读
    public readonly state = {
        name: "Hello",
        value: ""
    }
    private handleClick = () => {
        const { handleMsg } = this.props;
        const { value } = this.state;
        if (!value) return;
        this.setState({ name: value });
        handleMsg(value);
    }
    private handleChange = (e: React.FormEvent<HTMLInputElement>) => {
        // console.log(e.currentTarget.value);
        const { name, value } = e.currentTarget;
        this.setState({ [name]: value });
    }
    public render() {
        const { title } = this.props;
        const { name, value } = this.state;
        return (
            <>
                <h2>{title}</h2>
                <p>{name}</p>
                <p>value: {'  ' + value}</p>
                <Input onChange={this.handleChange} value={value} name="value" />{/* 需要设置name*/}
                <Button onClick={this.handleClick}>改变name</Button>
            </>
        );
    }
}

11.7创建pages/counter.tsx文件

import React, { Component } from 'react';
import { Button } from 'antd';
import { connect } from 'react-redux';
import { RouteComponentProps } from 'react-router-dom';
import { reducerType } from '../store';
import { asyncIncrementCount, decrementCount } from '../store/actions';

interface CounterProps {
    count: number;
    asyncIncrementCount: Function;
    decrementCount: Function;
}
const mapStateToProps = (state: reducerType) => ({ count: state.countReducer.count });
const mapDispatchToProps = { asyncIncrementCount, decrementCount };

//RouteComponentProps:路由库自带的api的类型定义
class Counter extends Component<RouteComponentProps & CounterProps, {}>{
    private increment = () => {
        const { asyncIncrementCount } = this.props;
        asyncIncrementCount(2);
    }
    private decrement = () => {
        const { decrementCount } = this.props;
        decrementCount(2);
    }
    public render() {
        const { count } = this.props;
        return (
            <div>
                <p>count：{count}</p>
                <Button onClick={this.increment}>按钮+2</Button>
                <Button onClick={this.decrement}>按钮-2</Button>
            </div>
        );
    }
}

export default connect(mapStateToProps, mapDispatchToProps)(Counter);

11.8修改App.tsx文件

import React, { Component } from 'react';
import { Switch,Route,Redirect,NavLink } from 'react-router-dom';
import Hello from './component/hello';
import Counter from './pages/counter';
interface IState {
  message: string
}

class App extends Component<{}, IState>{
  public readonly state = {
    message: ""
  }
  public handleMsg = (message: string) => {
    this.setState({ message });
  }
  public render() {
    const { message } = this.state;
    return (
      <>
        <h1>{message}</h1>
        <Hello title="Hello Typescript" handleMsg={this.handleMsg} />
        <NavLink to="/counter" activeClassName="active">计数</NavLink>
        <Switch>
          <Route path="/counter" component={Counter}/>
          <Redirect to="/counter"/>
        </Switch>
      </>
    );
  }
}

export default App;

11.9最后修改index.tsx文件

import React from 'react';
import ReactDOM from 'react-dom';
import { BrowserRouter as Router } from 'react-router-dom';
import { Provider } from 'react-redux';
import { ConfigProvider} from 'antd';

import store from './store';
import App from './App';
import zhCN from 'antd/es/locale/zh_CN';
import moment from 'moment';
import 'moment/locale/zh-cn';

moment.locale('en');
const Root: React.FC = () => (
    <Provider store={store}>
        <Router>
            {/* 新版的antd用ConfigProvider配合moment使用国际化定义 */}
            <ConfigProvider locale={zhCN}>
                <App />
            </ConfigProvider>
        </Router>
    </Provider>
);
ReactDOM.render(<Root />, document.getElementById('root') as HTMLElement);

最终重启项目即可 (有什么不足之处可以提出意见)

如果想看案例的大佬则直接点击这里前往github获取代码

原文地址：https://blog.csdn.net/weixin_43902189/article/details/99681548