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  • 从零搭建 React 开发环境 |牛气冲天新年征文

    正文概述 掘金(发声的沉默者)   2021-02-18   478

    前言

    大概在 2019 年,自己搭建 React 开发环境的想法萌芽,到目前为止,公司的很多项目上,也在使用中,比较稳定。为什么要自己造轮子?起初是因为自己并不满意市面上的脚手架。另外,造轮子对于自己也有一些技术上的帮助,学别人二次封装的东西,不如直接使用底层的库,这样也有助于自己系统的学习一遍知识,废话不多说,直接进入正文,如何搭建自己的开发环境。

    初始化

    创建文件夹并进入:

    $ mkdir tristana && cd tristana
    

    初始化 package.json

    $ npm init
    

    安装 Webpack

    $ npm install webpack webpack-cli --save-dev
    

    创建以下目录结构、文件和内容:

    project

    tristana
    |- package.json
    |- /dist
       |- index.html
    |- /script
       |- webpack.config.js
    |- index.html
    |- /src
       |- index.js
    
    

    src/index.js

    document.getElementById("root").append("React");
    

    index.html && dist/index.html

    <!DOCTYPE html>
    <html>
        <head>
            <meta charset="utf-8" />
            <title>tristana</title>
        </head>
        <body>
            <script src="../src/index.js"></script>
            <div id="root"></div>
        </body>
    </html>
    

    script/webpack.config.js

    module.exports = {
        mode: "development",
        entry: "./src/index.js",
    };
    

    package.json

    {
        // ...
        "scripts": {
            "build": "webpack --mode=development --config script/webpack.config.js"
        },
    }
    

    然后根目录终端输入:npm run build

    在浏览器中打开 dist 目录下的 index.html,如果一切正常,你应该能看到以下文本:'React'

    index.html 目前放在 dist 目录下,但它是手动创建的,下面会教你如何生成 index.html 而非手动编辑它。

    Webpack 核心功能

    Babel

    $ npm install @babel/cli @babel/core babel-loader @babel/preset-env --save-dev
    

    script/webpack.config.js

    module.exports = {
        // ...
        module: {
            rules: [
                {
                    test: /\.(js|jsx)$/,
                    loader: "babel-loader",
                    exclude: /node_modules/,
                },
            ],
        },
    };
    

    .babelrc

    在根目录下添加 .babelrc 文件:

    {
        "presets": ["@babel/preset-env", "@babel/preset-react"]
    }
    

    样式

    $ npm install style-loader css-loader less less-loader --save-dev
    

    script/webpack.config.js

    module.exports = {
        // ...
        module: {
            rules: [
                {
                    test: /\.(css|less)$/,
                    use: [
                        {
                            loader: "style-loader",
                        },
                        {
                            loader: "css-loader",
                            options: {
                                importLoaders: 1,
                            },
                        },
                        {
                            loader: "less-loader",
                            lessOptions: {
                                javascriptEnabled: true,
                            },
                        },
                    ],
                },
            ],
        },
    };
    

    图片字体

    $ npm install file-loader --save-dev
    

    script/webpack.config.js

    module.exports = {
        // ...
        module: {
            rules: [
                {
                    test: /\.(png|svg|jpg|gif|jpeg)$/,
                    loader: 'file-loader'
                },
                {
                    test: /\.(woff|woff2|eot|ttf|otf)$/,
                    loader: 'file-loader'
                }
            ],
        },
    };
    

    HTML

    $ npm install html-webpack-plugin --save-dev
    

    script/webpack.config.js

    const HtmlWebpackPlugin = require('html-webpack-plugin');
    module.exports = {
        // ...
        plugins: {
            html: new HtmlWebpackPlugin({
                title: 'tristana',
                template: 'public/index.html'
            }),
        }
    };
    

    index.html

    <!DOCTYPE html>
    <html>
        <head>
            <meta charset="utf-8" />
            <title>tristana</title>
        </head>
        <body>
            <div id="root"></div>
        </body>
    </html>
    

    开发服务

    $ npm install webpack-dev-server --save-dev
    

    script/webpack.config.js

    const path = require("path");
    const HtmlWebpackPlugin = require('html-webpack-plugin');
    module.exports = {
        // ...
        devServer: {
            contentBase: path.resolve(__dirname, "dist"),
            hot: true,
            historyApiFallback: true,
            compress: true,
        },
    };
    

    package.json

    {
        // ...
        "scripts": {
            "start": "webpack serve --mode=development --config script/webpack.config.js"
        },
        // ...
    }
    

    清理 dist

    $ npm install clean-webpack-plugin --save-dev
    

    script/webpack.config.js

    const { CleanWebpackPlugin } = require('clean-webpack-plugin');
    module.exports = {
        // ...
        plugins: {
            new CleanWebpackPlugin()
        }
    };
    

    Tips

    由于 webpack 使用的是^5.21.2 版本,在使用该插件时,会提示clean-webpack-plugin: options.output.path not defined. Plugin disabled...,暂时还未解决。

    环境变量

    $ npm install cross-env --save-dev
    

    package.json

    {
        // ...
        "scripts": {
            "start": "cross-env ENV_LWD=development webpack serve  --mode=development --config script/webpack.config.js",
            "build": "cross-env ENV_LWD=production webpack --mode=production --config script/webpack.config.js"
        },
        // ...
    }
    

    .jsx 文件

    安装依赖

    $ npm install @babel/preset-react react react-dom --save-dev
    

    .babelrc

    {
      "presets": ["@babel/preset-env", "@babel/preset-react"]
    }
    

    src/App.jsx

    src 目录下,新增 App.jsx 文件:

    import React, { Component } from "react";
    
    class App extends Component {
        render() {
            return (
                <div>
                    <h1> Hello, World! </h1>
                </div>
            );
        }
    }
    
    export default App;
    
    

    src/index.js

    import React from "react";
    import ReactDOM from "react-dom";
    import App from "./App.jsx";
    ReactDOM.render(<App />, document.getElementById("root"));
    

    React Router

    安装依赖

    $ npm install react-router history --save
    

    src/index.js

    import React from "react";
    import ReactDOM from "react-dom";
    import { Router, Route, Link } from "react-router";
    import { createBrowserHistory } from "history";
    import App from "./App.jsx";
    
    const About = () => {
        return <>About</>;
    };
    
    ReactDOM.render(
        <Router history={createBrowserHistory()}>
            <Route path="/" component={App} />
            <Route path="/about" component={About} />
        </Router>,
        document.getElementById("root")
    );
    
    

    MobX

    安装依赖

    $ npm install mobx mobx-react babel-preset-mobx --save
    

    .babelrc

    {
      "presets": ["@babel/preset-env", "@babel/preset-react", "mobx"]
    }
    

    src/store.js

    src 目录下新建 store.js

    import { observable, action, makeObservable } from "mobx";
    
    class Store {
    
        constructor() {
            makeObservable(this);
        }
    
        @observable
        count = 0;
    
        @action("add")
        add = () => {
            this.count = this.count + 1;
        };
    
        @action("reduce")
        reduce = () => {
            this.count = this.count - 1;
        };
    }
    export default new Store();
    
    

    index.js

    import { Provider } from "mobx-react";
    import Store from "./store";
    // ...
    ReactDOM.render(
        <Provider store={Store}>
            <Router history={createBrowserHistory()}>
            <Route path="/" component={App} />
            <Route path="/about" component={About} />
            </Router>
        </Provider>,
        document.getElementById("root")
    );
    
    

    src/App.jsx

    import React, { Component } from "react";
    import { observer, inject } from "mobx-react";
    
    @inject("store")
    @observer
    class App extends Component {
        render() {
            return (
                <div>
                    <div>{this.props.store.count}</div>
                    <button onClick={this.props.store.add}>add</button>
                    <button onClick={this.props.store.reduce}>reduce</button>
                </div>
            );
        }
    }
    
    export default App;
    

    Ant Design

    安装依赖

    $ npm install antd babel-plugin-import --save
    

    .babelrc

    {
        // ...
        "plugins": [
            [
                "import",
                {
                    "libraryName": "antd",
                    "libraryDirectory": "es",
                    "style": true
                }
            ]
        ]
    }
    
    

    src/App.jsx

    // ...
    import { DatePicker } from "antd";
    import "antd/dist/antd.css";
    
    @inject("store")
    @observer
    class App extends Component {
        render() {
            return (
                <div>
                    <DatePicker />
                </div>
            );
        }
    }
    
    export default App;
    
    

    TypeScript

    安装依赖

    $ npm install typescript @babel/preset-typescript --save-dev
    

    .babelrc

    {
        "presets": [
            // ...
            "@babel/preset-typescript"
        ]
    }
    

    tsconfig.json

    在根目录下,新增 tsconfig.json 文件:

    {
        "compilerOptions": {
            "emitDecoratorMetadata": true,
            "experimentalDecorators": true,
            "target": "ES5",
            "allowSyntheticDefaultImports": true,
            "strict": true,
            "forceConsistentCasingInFileNames": true,
            "allowJs": true,
            "outDir": "./dist/",
            "esModuleInterop": true,
            "noImplicitAny": false,
            "sourceMap": true,
            "module": "esnext",
            "moduleResolution": "node",
            "isolatedModules": true,
            "importHelpers": true,
            "lib": ["esnext", "dom", "dom.iterable"],
            "skipLibCheck": true,
            "jsx": "react",
            "typeRoots": ["node", "node_modules/@types"],
            "rootDirs": ["./src"],
            "baseUrl": "./src"
        },
        "include": ["./src/**/*"],
        "exclude": ["node_modules"]
    }
    
    

    src/App.jsx

    更换文件后缀 App.jsx -> App.tsx

    import React, { Component } from "react";
    import { observer, inject } from "mobx-react";
    import { DatePicker } from "antd";
    import "antd/dist/antd.css";
    
    @inject("store")
    @observer
    class App extends Component {
        props: any;
        render() {
            return (
                <div>
                    <DatePicker />
                    <div>{this.props.store.count}</div>
                    <button onClick={this.props.store.add}>add</button>
                    <button onClick={this.props.store.reduce}>reduce</button>
                </div>
            );
        }
    }
    
    export default App;
    
    

    代码规范

    代码校验、代码格式化、Git 提交前校验、Vscode配置、编译校验

    ESLint

    安装依赖

    $ npm install @typescript-eslint/parser eslint eslint-plugin-standard @typescript-eslint/parser @typescript-eslint/eslint-plugin eslint-plugin-promise  --save-dev
    

    .eslintrc.js

    在根目录下,新增 .eslintrc.js 文件:

    module.exports = {
        extends: ["eslint:recommended", "plugin:react/recommended"],
        env: {
            browser: true,
            commonjs: true,
            es6: true,
        },
        globals: {
            $: true,
            process: true,
            __dirname: true,
        },
        parser: "@typescript-eslint/parser",
        parserOptions: {
            ecmaFeatures: {
                jsx: true,
                modules: true,
            },
            sourceType: "module",
            ecmaVersion: 6,
        },
        plugins: ["react", "standard", "promise", "@typescript-eslint"],
        settings: {
            "import/ignore": ["node_modules"],
            react: {
                version: "latest",
            },
        },
        rules: {
            quotes: [2, "single"],
            "no-console": 0,
            "no-debugger": 1,
            "no-var": 1,
            semi: ["error", "always"],
            "no-irregular-whitespace": 0,
            "no-trailing-spaces": 1,
            "eol-last": 0,
            "no-unused-vars": [
            1,
            {
                vars: "all",
                args: "after-used",
            },
            ],
            "no-case-declarations": 0,
            "no-underscore-dangle": 0,
            "no-alert": 2,
            "no-lone-blocks": 0,
            "no-class-assign": 2,
            "no-cond-assign": 2,
            "no-const-assign": 2,
            "no-delete-var": 2,
            "no-dupe-keys": 2,
            "use-isnan": 2,
            "no-duplicate-case": 2,
            "no-dupe-args": 2,
            "no-empty": 2,
            "no-func-assign": 2,
            "no-invalid-this": 0,
            "no-redeclare": 2,
            "no-spaced-func": 2,
            "no-this-before-super": 0,
            "no-undef": 2,
            "no-return-assign": 0,
            "no-script-url": 2,
            "no-use-before-define": 2,
            "no-extra-boolean-cast": 0,
            "no-unreachable": 1,
            "comma-dangle": 2,
            "no-mixed-spaces-and-tabs": 2,
            "prefer-arrow-callback": 0,
            "arrow-parens": 0,
            "arrow-spacing": 0,
            camelcase: 0,
            "jsx-quotes": [1, "prefer-double"],
            "react/display-name": 0,
            "react/forbid-prop-types": [
            2,
            {
                forbid: ["any"],
            },
            ],
            "react/jsx-boolean-value": 0,
            "react/jsx-closing-bracket-location": 1,
            "react/jsx-curly-spacing": [
            2,
            {
                when: "never",
                children: true,
            },
            ],
            "react/jsx-indent": ["error", 4],
            "react/jsx-key": 2,
            "react/jsx-no-bind": 0,
            "react/jsx-no-duplicate-props": 2,
            "react/jsx-no-literals": 0,
            "react/jsx-no-undef": 1,
            "react/jsx-pascal-case": 0,
            "react/jsx-sort-props": 0,
            "react/jsx-uses-react": 1,
            "react/jsx-uses-vars": 2,
            "react/no-danger": 0,
            "react/no-did-mount-set-state": 0,
            "react/no-did-update-set-state": 0,
            "react/no-direct-mutation-state": 2,
            "react/no-multi-comp": 0,
            "react/no-set-state": 0,
            "react/no-unknown-property": 2,
            "react/prefer-es6-class": 2,
            "react/prop-types": 0,
            "react/react-in-jsx-scope": 2,
            "react/self-closing-comp": 0,
            "react/sort-comp": 0,
            "react/no-array-index-key": 0,
            "react/no-deprecated": 1,
            "react/jsx-equals-spacing": 2,
        },
    };
    
    
    

    .eslintignore

    在根目录下,新增 .eslintignore 文件:

    src/assets
    

    .vscode

    在根目录下新增 .vscode 文件夹,然后新增 .vscode/settings.json

    {
        "eslint.validate": [
            "javascript",
            "javascriptreact",
            "typescript",
            "typescriptreact"
        ]
    }
    
    

    Perttier

    安装依赖

    $ npm install prettier --save-dev
    

    prettier.config.js

    在根目录下,新增 prettier.config.js 文件:

    module.exports = {
        // 一行最多 100 字符
        printWidth: 100,
        // 使用 4 个空格缩进
        tabWidth: 4,
        // 不使用缩进符,而使用空格
        useTabs: false,
        // 行尾需要有分号
        semi: true,
        // 使用单引号
        singleQuote: true,
        // 对象的 key 仅在必要时用引号
        quoteProps: 'as-needed',
        // jsx 不使用单引号,而使用双引号
        jsxSingleQuote: false,
        // 末尾不需要逗号
        trailingComma: 'none',
        // 大括号内的首尾需要空格
        bracketSpacing: true,
        // jsx 标签的反尖括号需要换行
        jsxBracketSameLine: false,
        // 箭头函数,只有一个参数的时候,也需要括号
        arrowParens: 'avoid',
        // 每个文件格式化的范围是文件的全部内容
        rangeStart: 0,
        rangeEnd: Infinity,
        // 不需要写文件开头的 @prettier
        requirePragma: false,
        // 不需要自动在文件开头插入 @prettier
        insertPragma: false,
        // 使用默认的折行标准
        proseWrap: 'preserve',
        // 根据显示样式决定 html 要不要折行
        htmlWhitespaceSensitivity: 'css',
        // 换行符使用 lf
        endOfLine: 'lf'
    };
    
    

    stylelint

    安装依赖

    $ npm install stylelint stylelint-config-standard stylelint-config-prettier --save-dev
    

    stylelint.config.js

    在根目录下,新增 stylelint.config.js 文件:

    module.exports = {
        extends: ['stylelint-config-standard', 'stylelint-config-prettier'],
        ignoreFiles: [
            '**/*.ts',
            '**/*.tsx',
            '**/*.png',
            '**/*.jpg',
            '**/*.jpeg',
            '**/*.gif',
            '**/*.mp3',
            '**/*.json'
        ],
        rules: {
            'at-rule-no-unknown': [
                true,
                {
                    ignoreAtRules: ['extends', 'ignores']
                }
            ],
            indentation: 4,
            'number-leading-zero': null,
            'unit-allowed-list': ['em', 'rem', 's', 'px', 'deg', 'all', 'vh', '%'],
            'no-eol-whitespace': [
                true,
                {
                    ignore: 'empty-lines'
                }
            ],
            'declaration-block-trailing-semicolon': 'always',
            'selector-pseudo-class-no-unknown': [
                true,
                {
                    ignorePseudoClasses: ['global']
                }
            ],
            'block-closing-brace-newline-after': 'always',
            'declaration-block-semicolon-newline-after': 'always',
            'no-descending-specificity': null,
            'selector-list-comma-newline-after': 'always',
            'selector-pseudo-element-colon-notation': 'single'
        }
    };
    
    

    lint-staged、pre-commit

    安装依赖

    $ npm install lint-staged prettier eslint pre-commit --save-dev
    

    package.json

    {
        // ...
        "scripts": {
            "lint:tsx": "eslint --ext .tsx src && eslint --ext .ts src",
            "lint:css": "stylelint --aei .less .css src",
            "precommit": "lint-staged",
            "precommit-msg": "echo 'Pre-commit checks...' && exit 0"
        },
        "pre-commit": [
            "precommit",
            "precommit-msg"
        ],
        "lint-staged": {
            "*.{js,jsx,ts,tsx}": [
                "eslint --fix",
                "prettier --write",
                "git add"
            ],
            "*.{css,less}": [
                "stylelint --fix",
                "prettier --write",
                "git add"
            ]
        }
    }
    
    

    eslint-webpack-plugin

    安装依赖

    $ npm install eslint-webpack-plugin --save-dev
    

    script/webpack.config.js

    const ESLintPlugin = require('eslint-webpack-plugin');
    module.exports = {
        // ...
        plugins: [new ESLintPlugin()],
    };
    

    总结

    搭建这个的过程,也是遇到了不少坑,收获也是蛮多的,希望这个教程能够帮助更多的同学,少采点坑,完整的 React 开发环境可以看这个tristana,求点赞,求关注!


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