Set up a development server

- [Instructor] Setting Up a Development Server.…In this video we are going to talk about…how to use webpack-dev-server,…how to set up a webpack plugin,…and, at the end, leave everything ready…to start writing our React application in the next section.…So, let's start with webpack-dev-server.…Webpack-dev-server is an express server,…but that has some additional functionality,…that reads your webpack config file,…and keeps a fast in-memory bundle…that you can use for development purposes.…It will also watch your src files,…and recompile the bundle whenever the files change.…

This will enable us to increase our development velocity,…because every time we save a file in our code editor,…we will see that change automatically…refreshed in our browser.…We will see it in a minute.…Webpack-dev-server has a CLI or programmatic configuration,…we will use the CLI in this occasion.…And it's important to say…that it's only for development purposes.…Never use webpack-dev-server in production.…So let's start by installing webpack-dev-server.…