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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