webpack2 + React

Posted by On 5月 14, 2017 0 Comment

How to set ReactJs with webpack2

This is just simple app with React + webpack2.

Create project and install dependencies

mkdir react-demo
cd react-demo
npm init -y
npm i babel-core babel-loader babel-preset-es2015 webpack -D
npm i babel-preset-react webpack-dev-server -D
npm i react react-dom -S

.babelrc

Set es2015 and react

{
  "presets": [
    "es2015", "react"
  ]
}

webpack.config.js

const path = require('path');
const webpack = require("webpack");

module.exports = {
    entry: path.join(__dirname, 'src/app.js'),
    output: {
        path: path.join(__dirname, 'public'),
        filename: 'bundle.js'
    },
    devServer: {
        contentBase: 'public',
        port: 8080,
        inline: true
    },
    module: {
        loaders: [
            {
                test: /\.js$/,
                exclude: /node_modules/,
                loader: 'babel-loader'
            }
        ]
    }
};

src/app.js

import React from 'react';
import {render} from 'react-dom';

class App extends React.Component {
    render() {
        return <p>Hello React!</p>;
    }
}
render(<App/>, document.getElementById('app'));

dist/index.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>React</title>
</head>
<body>
    <div id="app"></div>
    <script src="bundle.js"></script>
</body>
</html>

※ Please prepare html plugin to resolve javascript file in the future.

Start and Test it!

npm run start

Run webpack-dev-server (with compile)

You can access localhost:8080/index.html

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