An Overview Of Typescript, Angular And Nest JS
An Overview of TypeScript, Angular, and Nest JS
- Limited debugging – while some editors do support debugging, they are not nearly as efficient as C/C++ editors, for example.
- No multiple inheritance support, which may be required by some programs
What is TypeScript?
Structurally, TypeScript has the following three central components:
- The language itself − this includes syntax, keywords, and type annotations.
- The TypeScript Language Service or TLS − This feature exposes an additional layer around the core compiler pipeline that serves as editing applications. The language service supports traditional editor operations like statement completions, signature help, code formatting and outlining, colorization, and more.
So what can you use TypeScript for?
- Strong Static Typing − TypeScript includes an optional static typing and type inference system through TypeScript Language Service, or TLS. Variable type may be inferred by the TypeScript Language Service based on its value.
What is Angular?
While TypeScript could be considered an “enhanced language”, AngularJS is a structural framework used to create dynamic web apps. It lets you employ HTML as your template language, as well as extend the HTML syntax to express application components concisely.
AngularJS also offers data binding and dependency injection features, which can help eliminate much of the code you would otherwise have to time-consumingly write. Because all of this also takes place within the browser, AngularJS works well alongside server technology.
Additionally, AngularJS can simplify application development by offering a greater level of abstraction to any developer. While this limits flexibility, which may annoy some programmers, AngularJS was built following the principles of CRUD in mind. Since CRUD applications represent the majority of web applications being built these days, this loss of flexibility is offset by the many use cases of the Angular framework.
What can you use Angular for?
- Angular offers not only tools, but additionally design patterns that help with project layout and readability. Well-designed Angular applications allow you to avoid a hodgepodge of classes and methods that are hard to both test and modify.
- Angular offers a variety of tools to start designing and building the application without having to do much creation of your own. For example:
- There are directives to provide dynamic behavior to HTML elements
- FormControl can help you create forms and introduce various validation rules depending on your needs.
- You can send asynchronous HTTP requests
- Routing is very easy to set up
- Components are decoupled
- Testing is a central focus of Angular, which supports both unit and end-to-end testing
- Angular is mobile and desktop-ready, meaning a single framework for multiple platforms, essential for any modern application
- Better user interfaces (UIs) – because a UI with AngularJS is fully structured, manipulation and understanding of the components is significantly easier for a developer. Markups are also significantly easier for designers to understand, allowing for easier collaboration between designers and developers and a more efficient team experience
What is NestJS?
NestJS both provides a level of abstraction above more common NodeJS frameworks like Express or Fastify, and exposes their APIs directly to programmers. This allows programmers freedom to use the wide variety of third-party modules which are available for the underlying platform.
NestJS was developed by Kamil Mysliwiec and designed specifically as a framework to rapidly build server-side applications. Mysliwiec drew heavily on the benefits provided by Angular, and the structure of Nest applications reflect the influence of the Angular framework. For example, the use of controllers, providers, modules, and pipes all hearken to Angular.
What can you use NestJS for?
- Similar to Angular, the folder structure of NestJS offers minimal downtime. Specifically, components all get their own folders, with an application module and main file residing in the root along with extra configuration files. This is another touch of simplicity that programmers will appreciate, especially for complex projects.
- NestJS also offers a command line tool that can make it easier to scaffold a project, generate architecture components, and display project details and information.
What’s the best way to learn how to use TypeScript, Angular, and NestJS?
Convinced that TypeScript, Angular, and NestJS are something you want to add to your coding arsenal? Then look no further than the SoloLearn mobile app, where you can take a full-stack course that covers everything you need to know about all of these great tools. With a variety of tutorials around key elements of the language, as well as quizzes and coding challenges to test your knowledge, this is a great option for familiarizing yourself with the base language.
After completing the course, there are also numerous resources for TypeScript, Angular, and NestJS available for free throughout the web. Try creating some small, simple applications (or even aspects of applications) and make use of the thriving developer communities for each of these tools if you need extra help. Happy coding!