Webpack 4 + React + Typescript 搭建启动模版
2019年是个崭新的开始，在过去半年的工作中我参与到公司一个大型项目的维护和开发中，深深的体会到了react项目中数据流向复杂，参数类型错乱带来的痛苦体验，于是在崭新的一年我决定拥抱Typescript来解决避免在以后的项目中遇到同样痛苦的问题。
这里先从一个简单的Webpack 4 + React + Typescript 配置模版开始。
首先,我们需要建立文件的基本结构:
proj/ ├─ dist/ └─ src/ └─ components/
cd proj初始化项目
npm init
然后开始安装依赖：webpack
npm i webpack webpack-cli -D
创建webpack.config.js
const path = require('path');
module.exports = {
entry: "./src/index.tsx",
output: {
path: path.join(__dirname, '/dist'),
filename: 'bundle.js'
}
};安装typescript 加载器
npm i typescript awesome-typescript-loader source-map-loader -D
配置脚本 typescript tsconfig.json
{
"compilerOptions": {
"outDir": "./dist/",
"sourceMap": true,
"noImplicitAny": true,
"module": "commonjs",
"target": "es5",
"jsx": "react"
},
"include": [
"./src/**/*”
]
}在webpack.config.js 加入文件扩展名解析
resolve: {
// Add '.ts' and '.tsx' as resolvable extensions.
extensions: [".ts", ".tsx", ".js", ".json"]
},引入react依赖
npm i react react-dom @types/react @types/react-dom
@ types /前缀意味着我们还想获取React和React-DOM的声明文件
在根目录添加html脚本 indec.html
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8" />
<title>Hello React!</title>
</head>
<body>
<div ></div>
</body>
</html>在src目录添加入口文件index.tsx
import * as React from "react";
import * as ReactDOM from "react-dom";
import { Hello } from "./components/Hello";
ReactDOM.render(
<Hello compiler="TypeScript" framework="React" />,
document.getElementById("example")
);在src/components目录添加一个Hello.tsx组件，用了react的function 无状态组件 和typescript 的interface
import * as React from "react";
export interface HelloProps {
compiler: string;
framework: string;
}
export const Hello = (props: HelloProps) => (
<h1>
Hello from {props.compiler} and {props.framework}!
</h1>
);引入html-webpack-plugin 实现html模版自动生成
npm i html-webpack-plugin -D
完整的webpack.config.js
const path = require('path');
const HtmlWebpackPlugin = require('html-webpack-plugin');
module.exports = {
entry: "./src/index.tsx",
output: {
path: path.join(__dirname, '/dist'),
filename: 'bundle.js'
},
devtool: "source-map",
resolve: {
// Add '.ts' and '.tsx' as resolvable extensions.
extensions: [".ts", ".tsx", ".js", ".json"]
},
module: {
rules: [
// All files with a '.ts' or '.tsx' extension will be handled by 'awesome-typescript-loader’.
{ test: /\.tsx?$/, loader: "awesome-typescript-loader" },
// All output '.js' files will have any sourcemaps re-processed by 'source-map-loader'.
{ enforce: "pre", test: /\.js$/, loader: "source-map-loader" }
]
},
plugins: [
new HtmlWebpackPlugin({
template: './index.html'
})
],
// 用来替换全局变量
// externals: {
// react: "React",
// "react-dom": "ReactDOM"
// }
};引入webpack-dev-server
npm i webpack-dev-server --D
更新package.json
"scripts": {
"start": "webpack-dev-server --mode development --open --hot",
"build": "webpack --mode production"
}运行npm start 在浏览器打开默认端口localhost:8080 查看