從零搭建react框架(一)

1.用webpack、babel編譯es6

先裝依賴包:

yarn add webpack @babel/core @babel/preset-env babel-loader 

新建.babelrc

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

新建app.js

const a = 123;

新建webpack.config.js

module.exports = {
  entry: {
    app: './app.js'
  },
  output: {
    path: __dirname+'/dist',
    filename: '[name].bundle.js'
  },
  module: {
    rules: [
      {
        test: /\.m?js$/,
        exclude: /(node_modules|bower_components)/,
        use: {
          loader: 'babel-loader'
        }
      }
    ]
  },
  mode: 'development',
  stats: {
    colors: true
  },
  devtool: 'source-map'
};

/dist/app.bundle.js
使用wepack命令打包之後結果
在這裏插入圖片描述

2.配置webpack編譯react

安裝依賴包

yarn add react react-dom @babel/preset-react

.bashrc文件配置

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

app.js

import ReactDom from 'react-dom';

ReactDom.render(<div>react is building</div>)

打包編譯
/dist/app.bundle.js
在這裏插入圖片描述

3.啓動項目

安裝依賴包

yarn add weback-cli webpack-dev-server react react-dom html-webpack-plugin

新建src/index.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<div id="app"></div>
</body>
</html>

src/app.js

import React from 'react';
import ReactDom from 'react-dom';

ReactDom.render(<div>react is building</div>, document.querySelector("#app"));

webpack.config.js

const HtmlWebpackPlugin = require('html-webpack-plugin');

module.exports = {
  entry: {
    app: './src/app.js'
  },
  output: {
    path: __dirname+'/dist',
    filename: '[name].bundle.js'
  },
  plugins: [
    new HtmlWebpackPlugin({
      template: __dirname+'/src/index.html',
      filename: 'index.html'
    })
  ],
  module: {
    rules: [
      {
        test: /\.js$/,
        exclude: /(node_modules|bower_components)/,
        use: {
          loader: 'babel-loader',
        }
      }
    ]
  },
  devServer: {
    open: true,
    port: 8080
  },
  mode: 'development',
  stats: {
    colors: true
  },
  devtool: 'source-map'
};

package.json

  "scripts": {
    "dev": "webpack-dev-server --config webpack.config.js --color --progress --hot",
    "start": "npm run dev",
    "test": "echo \"Error: no test specified\" && exit 1"
  },

啓動項目yarn start
在這裏插入圖片描述
項目啓動成功,我們已經成功一半了。接下來請看下一個教程(* ̄︶ ̄)

項目github地址:https://github.com/kakaoG/react-webpack

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