Node.js includes a mechanism to do exactly what we want: define “modules” which can have some private/local parts, can export some public parts, and can require other modules. Good job! Now the script file is big and clunky. You think about it for some time and decide that it would be very nice if we could add some way for a particular file to say what other files it needs to be available before it can run its dependencies if you will. Home / ReactJs / Setup React Project with Webpack 4 and Babel, Posted on October 6, 2018 by Jogesh Sharma. It's not mentioned above, but if you use the sass option you need to change the css import in app.js to: A constructive and inclusive social network. First, let's learn about Webpack and Babel. Before that, we need to install some new loaders. Now we can compile our project with the following command: And you will see the following output in the terminal. The complete code is available on my GitHub: npm install --save-dev webpack webpack-cli webpack-dev-server, npm install --save-dev @babel/core babel-loader @babel/preset-env @babel/preset-react, npm install --save-dev css-loader style-loader postcss-loader --save-dev, npm install --save-dev file-loader url-loader, { "presets": ["@babel/preset-env", "@babel/preset-react"] }, Development Environment Setup React, Nodejs. Create a webpack.config.js in the root folder. To do that we need to use loader. Let's run our app again. cheap-module-eavl-source-map => cheap-module-eval-source-map, Thanks so much, your tutorial was easy to follow and works flawlessly! In your package.json file include your start script for dev, your build script for the production build. We need to install babel to work with React. Now add new rules in our webpack.config.js file. cd react-setup-tutorial Add following codes inside your webpack.config.js file. Built on Forem — the open source software that powers DEV and other inclusive communities. If we want to use SCSS then we need to install sass-loader that would help webpack to compile sass to css. Now run dev-server again by using the following command. In the babel website navigation bar section you will find Try It Out. Open your index.html file in the browser and yeah it's working. Today we are going to learn how to setup Webpack and Babel for our React app. The above command will add and install webpack and webpack-cli to our project. Before starting, make sure you have installed npm on your computer. Now we can use JSX in our React. On the left side, you see some PRESETS options where some options are already been ticked. It’s hard to maintain and to find particular sections. Add the following line inside the script object of the package.json file. We need to install following as a dev dependencies babel-core, babel-loader, babel-preset-env and babel-preset-react. Let's create a new file and folder in the src directory. Good news! Hacking Nuxt’s 404 logic for maximum awesome (and easy proxying)! Let’s run our example project in development first: You should see a “compiled successfully” message and load the browser. So let's create webpack.config.js file with the following code inside it. That's it. And we can do it by babel. touch public/index.html src/app.js. As you decide to add more features, more developers join you, and the project grows. import style.css inside our app.js file and run dev-server to see the effect. test property for what files do we actually want to run this loader on and we want to run it on files that end up with .js. We have to give absolute path value in our output path properties. Now chnage our style.css file extension .css to .scss that is style.scss. You have started using JavaScript in your application. Thank you :). Now, what is @babel/core and babel-loader? Its a module bundler which lets us bundle our project files into a single file. npm install css-loader style-loader --save-dev. It defaults to ./dist/main.js for the main output file and to the ./dist folder for any other generated file. Let's dive into our React setup. :). Now time to create index.js file in your project’s /src folder. It's a JavaScript compiler. You will have your production build inside the dist folder. And more importantl… Now we have configured Webpack and Babel for React that we can use to create our React projects. Now, we will move to the actual build configuration for babel and webpack.