Why does Mister Mxyzptlk need to have a weakness in the comics? For this we'll need an index.js file: index.js. npm - ReactJS - when creating one react application as package and In the root directory (webpack-for-react) we create the Babel configuration file. Most of the magic of Create React App is done by installing react-scripts and adding it to package.json. Donations to freeCodeCamp go toward our education initiatives, and help pay for servers, services, and staff. The save dev command tells the React app that these are just dev dependencies. So I have built the first piece of an app using create-react-app. In this example, there are implicit dependencies between the