react-typescript

老的react项目迁移到react+typescript,之前的内容不动,新写的用tsx写

第一步:安装Typescript、配置tsconfig文件

npm i -g typescript 

{
 "compilerOptions": {
 "target": "es5", /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017','ES2018' or 'ESNEXT'. */
 "module": "es2015", /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', or 'ESNext'. */
 // "lib": [], /* Specify library files to be included in the compilation. */
 "allowJs": true, /* Allow javascript files to be compiled. */
 // "checkJs": true, /* Report errors in .js files. */
 "jsx": "preserve", /* Specify JSX code generation: 'preserve', 'react-native', or 'react'. */
 // "declaration": true, /* Generates corresponding '.d.ts' file. */
 // "declarationMap": true, /* Generates a sourcemap for each corresponding '.d.ts' file. */
 // "sourceMap": true, /* Generates corresponding '.map' file. */
 // "outFile": "./", /* Concatenate and emit output to single file. */
 // "outDir": "./", /* Redirect output structure to the directory. */
 // "rootDir": "./", /* Specify the root directory of input files. Use to control the output directory structure with --outDir. */
 // "composite": true, /* Enable project compilation */
 // "removeComments": true, /* Do not emit comments to output. */
 // "noEmit": true, /* Do not emit outputs. */
 // "importHelpers": true, /* Import emit helpers from 'tslib'. */
 // "downlevelIteration": true, /* Provide full support for iterables in 'for-of', spread, and destructuring when targeting 'ES5' or 'ES3'. */
 // "isolatedModules": true, /* Transpile each file as a separate module (similar to 'ts.transpileModule'). */
 /* Strict Type-Checking Options */
 "strict": true, /* Enable all strict type-checking options. */
 // "noImplicitAny": true, /* Raise error on expressions and declarations with an implied 'any' type. */
 // "strictNullChecks": true, /* Enable strict null checks. */
 // "strictFunctionTypes": true, /* Enable strict checking of function types. */
 // "strictBindCallApply": true, /* Enable strict 'bind', 'call', and 'apply' methods on functions. */
 // "strictPropertyInitialization": true, /* Enable strict checking of property initialization in classes. */
 // "noImplicitThis": true, /* Raise error on 'this' expressions with an implied 'any' type. */
 // "alwaysStrict": true, /* Parse in strict mode and emit "use strict" for each source file. */
 /* Additional Checks */
 // "noUnusedLocals": true, /* Report errors on unused locals. */
 // "noUnusedParameters": true, /* Report errors on unused parameters. */
 // "noImplicitReturns": true, /* Report error when not all code paths in function return a value. */
 // "noFallthroughCasesInSwitch": true, /* Report errors for fallthrough cases in switch statement. */
 /* Module Resolution Options */
 "moduleResolution": "node", /* Specify module resolution strategy: 'node' (Node.js) or 'classic' (TypeScript pre-1.6). */
 // "baseUrl": "./", /* Base directory to resolve non-absolute module names. */
 // "paths": {}, /* A series of entries which re-map imports to lookup locations relative to the 'baseUrl'. */
 // "rootDirs": [], /* List of root folders whose combined content represents the structure of the project at runtime. */
 // "typeRoots": [], /* List of folders to include type definitions from. */
 // "types": [], /* Type declaration files to be included in compilation. */
 // "allowSyntheticDefaultImports": true, /* Allow default imports from modules with no default export. This does not affect code emit, just typechecking. */
 "esModuleInterop": true, /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */
 // "preserveSymlinks": true, /* Do not resolve the real path of symlinks. */
 /* Source Map Options */
 // "sourceRoot": "", /* Specify the location where debugger should locate TypeScript files instead of source locations. */
 // "mapRoot": "", /* Specify the location where debugger should locate map files instead of generated locations. */
 // "inlineSourceMap": true, /* Emit a single file with source maps instead of having a separate file. */
 // "inlineSources": true, /* Emit the source alongside the sourcemaps within a single file; requires '--inlineSourceMap' or '--sourceMap' to be set. */
 /* Experimental Options */
 // "experimentalDecorators": true, /* Enables experimental support for ES7 decorators. */
 // "emitDecoratorMetadata": true, /* Enables experimental support for emitting type metadata for decorators. */
 "exclude": [
 "node_modules"
 ]
 }
}

第二步:安装依赖

1、npm i -D webpack webpack-cli html-webpack-plugin dynamic-import-webpack // webpack 安装包
2、npm i -D @babel-core @babe-preset-env @preset-react babel-loader babel-plugin-import // babel安装包
3、npm i -D typescript awesome-typescript-loader //typescript相关包
4、npm i -S react react-dom @types/react @types/react-dom antd //开发包
5、css-loader style-loader......

第三步: 配置webpack.config.js文件

const path = require('path');
const webpack = require('webpack');
const HtmlWebpackPlugin = require('html-webpack-plugin');
module.exports = {
 context: path.resolve(__dirname, 'src'),
 entry: {
 vendor: ['antd/dist/antd.min.css'],
 app: './index.tsx'
 },
 mode: 'development',
 devtool: 'cheap-module-eval-source-map',
 resolve: {
 modules: ['src', 'node_modules'],
 extensions: ['.ts', '.tsx', '.js', '.json']
 },
 output: {
 filename: '[name].boudle.js',
 path: path.resolve(__dirname, 'dist')
 },
 module: {
 rules: [
 {
 test: /\.tsx?$/,
 use: ['babel-loader?cacheDirectory', 'awesome-typescript-loader']
 },
 {
 test: /\.js$/,
 use: ['babel-loader?cacheDirectory'] // 兼容老的以.js结尾的文件
 },
 {
 test: /\.css$/,
 use: ['style-loader', 'css-loader']
 }
 ]
 },
 plugins: [
 new HtmlWebpackPlugin({
 filename: 'index.html',
 template: path.resolve(__dirname, 'public', 'index.html')
 }),
 new webpack.HotModuleReplacementPlugin()
 ],
 devServer: {
 contentBase: path.resolve(__dirname, 'public'),
 hot: true
 }
};

第四步:配置.babelrc配置

{
 "presets": [
 "@babel/preset-env",
 "@babel/preset-react",
 ],
 "plugins": [
 "dynamic-import-webpack",
 ["import", {
 "libraryName": "antd"
 }]
 ]
}