You can install the declaration files by running the following command in the Package Manager Console PowerShell window. As AngularJS has a dependency on jqLite, the declaration files for jQuery will also be pulled in. Within will be the two Angular declaration files you just installed. This will create a new directory called typings with a sub directory called angularjs. The AngularJS declaration files can be installed using the following command tsd install angular The TypeScript declaration files are fully open source and can be found on the Definitely Typed GitHub repo. This will install the TypeScript definition manager globally. Open a Node.js command prompt and enter the following npm install -g tsd You install the TypeScript definition manager using NPM. This is done using the TypeScript Definition Manager. Thankfully TypeScript has a built in mechanism for adding type declaration files to your project. You will probably find it easier to maintain your packages over time using Bower. You will find the latest version on the AngularJS website. You can, of course, download Angular manually and add it to your project. You can use the same mechanism to easily update the packages too (using the update-package command). Now add a new file to your project called bower.json and add the following configuration: This will install bower globally on your machine. If you don’t already have bower, a client side package manager, installed you can use the following command from a Node.js command prompt npm install -g bower VS Code is still pretty young at this point (July 2015) and support for pulling in packages is non-existent. You can do this using either Node Package Manager (NPM) or manually by download the appropriate files and adding them into your project folder. Next, we need to add AngularJS to our project. If you have the TypeScript file and JavaScript files open side by side, the JavaScript file will periodically update without the need to manually save changes. Press Ctrl+ Shift+ B to kick off the build. Click File > New File… and add the following code….Open VS Code, click File > Open Folder… and point to the directory you just created.Create a new directory somewhere, say on your desktop, called AngularJSAndTypeScript101.This same concept applies regardless of your editor. Task runnerįirst, there’s some configuration in VS Code that we need to do. We’ll cover the specifics of that shortly. We will develop a simple application based on the HaveIBeenPwned API. You will need to reference the AngularJS type declaration files for AngularJS to get full auto-completion/intelli-sense support and to be able to fully ultilise TypeScript’s static typing functionality. “When using an external JavaScript library, or new host API, you’ll need to use a declaration file (.d.ts) to describe the shape of that library.” d.ts and contain all the information to, for lack of a better word, describe the structure of a JavaScript library. Type Declaration FilesĪlso known as “Type Definition Files”, these are files that have the extension. VS Code is a free, cross platform editor hat has excellent built in TypeScript support. When necessary, screenshots showing relevant information will be of VS Code. Note: This tutorial tries to stay editor independent, meaning the concepts apply to TypeScript specifically and not to an editor. Note: This tutorial assumes you have some knowledge of Angular 1.x. There is also a demo project on GitHub pages. All the code for this project is available to view on GitHub. It was originally going to be written in Google’s propriety language AtScript, but the teams have merged the projects and are now working together on TypeScript. Its successor, Angular 2.x, is written using TypeScript. AngularJS version 1.x is written in JavaScript. Using TypeScript, we can create more robust and scalable AngularJS code to deliver the ultimate user experience whilst avoiding the traditional spaghetti code nightmare that JavaScript applications can often descend into. AngularJS greatly simplifies previously hard tasks like two-way data binding, templating, the MVC design pattern, despendency injection and more. AngularJS 1.x is a front end JavaScript framework that has gained huge traction and popularity in the development community.
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