It allows you to split your application’s code and your third party code into separate files. The only plugin we need is built into webpack. – output: An object that configures where the bundle files are saved once generated. In our case we passed an object with keys of app and vendor. – entry: The main file that bootstraps your Angular application. – context: This is an absolute path to your application’s source files. The key properties here are context, entry, and output. This file needs to export a configuration definition that webpack can interprit. This file informs webpack on how you want your application bundles separated and if you have any pre-processing tasks to perform.Ĭreate in the root of your project. To do this it looks for the file in the root of your project. Webpack needs to know where your application files live and where you want to store the bundles. You’ve got Angular and webpack installed! Step Three: Configuring webpack In the case of this tutorial, Angular and webpack are part of a build process so you should use the -save-dev flag. I recommend only using -save when a server-side application requires third-party modules at run-time. It is up to you and your build process on how you install dependencies. If you are familiar with NPM you’ve probably noticed that we’re using the -save-dev flag here instead of the -save flag. At this point, our application only needs Angular and webpack. Omit the -y flag if you’d prefer to use the configuration wizard instead. The -y flag bypasses the configuration wizard and accepts all of the default configuration options. You can do this by simply executing this command in your terminal window: Open a terminal and navigate to the root of your application.īefore you install webpack or any of your third party libraries like Angular you’ll need to initialize your project with NPM. Delete _ from the _js_ directory before you continue. In this step you’ll install Angular using NPM so the included Angular library is no longer needed. The downloaded project included _ in the _js_ directory. Next you’ll need to configure webpack to create the bundles. And because our application depends on Angular, the script needs to load first. The order you reference these scripts _is_ important because the browser executes them as they are loaded. You’ll need to replace these references with the bundled files you’re about to create. You’ll notice there are more than a few JavaScript files referenced. This keeps the vendor code separate from our code and makes debugging our application less of a hassle. Third party libraries like Angular and other dependencies will be bundled into. In our case, we’ll be bundling all of our application’s code into. Bundling is the process of joining multiple files into a single file. We’ll be bundling our application into two primary files ( and ). Update index.html Open the project in your favorite editor. Let’s get started migrating this Angular application for use with webpack. See the Pen Angular webpack Starter by Ken Howard ( on CodePen. Go ahead and unzip the application and open index.html in your favorite browser. You’ll also need to download the starter project for this tutorial. Once Node is installed you’ll be able to follow this tutorial. You’ll be using a very small subset of webpack’s capabilities in this tutorial.īefore you start you must have Node installed on your machine. webpack has a wide variety of use cases and configuration options. Your Angular application is pretty small right now, but you’ll need to update it to use a module loader like webpack so it’s ready for the future. Here’s how the starter project is structured: I won’t go into why you should use webpack, you can read the motivation behind the project and come to your own conclusions. In this tutorial, you’ll update an existing Angular application to use CommonJS modules and bundle it using webpack. NPM ships with Node and has become the _defacto_ package manager for front-end JavaScript libraries and frameworks. With webpack you can install Angular using NPM, the Node Package Manager. Webpack is a module loader that works similar to how Node handles modules. If only there were some way to use a module loader similar to how modules work in Node… webpack To The Rescue But adding all of the script references to my HTML file is painful. Because Angular is so modular you can separate your JavaScript code like your controllers and services into multiple files.
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