Technical requirements

We use the following technologies in this chapter:

• Node.js and npm: TypeScript and React are dependent on these. Install them from the following link: https://nodejs.org/en/download/. If you already have these installed, make sure npm is at least version 5.2. 

• Visual Studio Code: We'll need an editor to write our React and TypeScript code, which can be installed from https://code.visualstudio.com/. We'll also need the TSLint extension (by egamma) and the Prettier extension (by Estben Petersen).
• Babel Repl: We'll use this online tool briefly to explore JSX. This can be found at https://babeljs.io/repl.