- It is one of the most popular scripting languages compatible with all modern web browsers, such as Safari, Google Chrome, Opera Firefox, and Internet Explorer.
- It is a versatile language, enabling developers to use it for the front-end as well as back-end development. Node.js helps in back-end development, whereas libraries, like ReactJS, AngularJS, etc., help in front-end development.
- It reduces the code length and improves the performance of websites and web applications.
- As the JS code is visible to users, hackers can use it for malicious purposes.
- Web development
- Game development
- Mobile application development
- Web servers
- Presentations as websites
- Smartwatch applications
- Flying robots
What is TypeScript?
Transcompilation or source-to-source compilation is a translator accepting the source code of a program scripted in one programming language and producing an identical source code in the same or different language. We can use the TypeScript Checker compiler, which is the default one for transcompilation. Else, we can opt for the Babel compiler.
In 2012, TypeScript was made public as version 0.8. The next version of TypeScript 0.9 was released in 2013 and it included the support for generics. TypeScript 1.0 was released in 2014, which was supported by Visual Studio 2013 Update 2.
TypeScript 2.0 was released in 2016 and introduced a feature of a billion-dollar mistake. A billion-dollar mistake allows programmers to optionally prevent variables from being assigned null values.
In 2018, TypeScript 3.0 was made public and brought many language additions, like rest parameters with tuple types, generic rest parameters, tuples in rest parameters and spread expressions, etc. Finally, TypeScript 4.0 was released in 2020, which added language features, such as Variadic Tuple Types and Custom JSX Factories.
Pros of TypeScript
The following are the benefits of TypeScript:
- In TypeScript, everything stays the way we define it since it follows strict typing. For example, if you want a variable to always be a number, it is achieved through strict typing.
- While working with TypeScript, we get compilation errors while developing an application and not at runtime. Therefore, there are very few chances of getting errors at the runtime.
Cons of TypeScript
Below are some major drawbacks of TypeScript:
- It takes a significant time to compile TypeScript code.
- It does not support abstract classes.
Applications of TypeScript
|It is a weakly-typed language and does not support static typing.||It is a strictly-typed language and supports both static and dynamic typing.|
|It does not support modules, generics, or interfaces.||It supports modules, generics, and interfaces to define data.|
|It does not support prototyping.||It supports prototyping.|
TypeScript is ideal for developing complex web applications, all thanks to the types and decorators that it offers. The feature of decorators is essential for frameworks like Angular, Nest.js, etc., since it separates the modification or decoration of a class without affecting the original source code. Also, Angular comes with various tools, boilerplate, and starter packs, making it easier for developers to set up or build their web projects quickly and effortlessly.
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