What is TypeScript? Know Why To Learn TypeScript?

Hey JavaScript developers, it’s time to learn TypeScript. Do you know if most JavaScript developers prefer TypeScript over JavaScript? 

Why do they do so?

Let’s know why you should learn TS.

What is TypeScript Programming Language?

What is TypeScript
Hey JavaScript developers, it’s time to learn TypeScript. Do you know if most JavaScript developers prefer TypeScript over JavaScript? 

Anders Hejlsberg developed the typeScript at Microsoft, who is also a designer of C#. The language is a strongly typed, object-oriented, and compiled language. It is also known as TS Language. Let us tell you that TypeScript is both a language and a set of tools too. It is a typed superset of JavaScript complied to JavaScript, which means JavaScript plus some extra features. 

What are the TypeScript Features?

  • Cross-Platform: It can be used on every platform JavaScript operates on. The TypeScript compiler is accessible all over every Operating System available such as Windows, macOS, and Linux.
  • Object-Oriented Language: The language has advanced features like Interfaces, Classes, and Modules. It is possible to write pure object-oriented code that can be used for client-side and server-side development.
  • Static type-checking: The language employs static typing. Annotations accomplish this to type. This helps with typing checks at the time of compilation. So, you will spot mistakes when typing your code and not have to run the script every time. Furthermore, using the mechanism of type inference, when the variable is not declared with the designation of a type, the value will be inferred from the value.
  • Alternative Static Typing: It static typing is not required, should you choose to use the dynamic type of JavaScript.
  • DOM Manipulation: As with JavaScript, TypeScript can be utilized to manipulate DOM.
  • The ES 6 features: It includes most features of the planned ECMAScript in 2015, including interface, class, Arrow functions, etc.

What are the advantages of TypeScript?

  • It is an open-source coding language constantly developed and managed by Microsoft; therefore, it is also recognized as Microsoft TypeScript.
  • It can be used with any browser, as well as the JavaScript engine.
  • TS Language is identical to JavaScript and utilizes a similar language and syntax. The code in TypeScript eventually converts into JavaScript. This helps speed up the learning process for front-end designers programming in JavaScript.
  • It is also more similar in syntax to backend languages such as Java as well as Scala. This makes it easier for backend developers to write front-end applications coding faster.
  • TypeScript code can be invoked from already existing JavaScript code. It can also be used with the existing JavaScript library and frameworks without issue.
  • It is the TypeScript Definition file with the .d.ts extension. The language permits support for the existing JavaScript libraries. Therefore, the code can add JavaScript libraries that use type definitions to gain the advantages of typing code autocompletion and documentation for existing dynamically typed JavaScript libraries.

Also Read: What is Julia Programming? Know Why To Learn Julia?

  • It supports the most recent JavaScript features of ECMAScript 2015. It also includes features available in ES6 and ES7 that run in the ES5-level JavaScript engines such as Node.js. This benefits from using components from the future JavaScript versions to run the current JavaScript engines.
  • This coding language can be easily integrated with task-runner tools such as Grunt and Gulp to help automate workflows.
  • JavaScript was first introduced as a language designed for clients. The growth of Node.js has placed JavaScript as new server-side technology as well. But as JavaScript code expands, it becomes complicated, making it harder to manage or reuse.
  • Additionally, its inability to fully embrace the features associated with Object Orientation, strong type checking and compile-time error check hinders JavaScript from achieving success in the enterprise as a complete server-side technology. The language was created to help bridge the gap.

Why Should You Use It?

It has a distinct advantage over counterparts such as CoffeeScript or Dart programming languages in the manner that it is an extension of JavaScript. Contrary to this, languages such as Dart and CoffeeScript are new languages requiring an exceptional execution environment for each language.

Compilation – JavaScript is an interpreter language. Therefore, it must be tested to ensure that it is legitimate. That means that you create all the codes only to discover no output or error in the event of an error. Therefore, you must search for hours to find flaws inside the codes. The TypeScript transpiler has an error-checking function. It will compile the code and produce compilation errors if it discovers syntax errors. This can help to identify mistakes before the script is executed.

A Solid Type of Static- Strong Static Typing JavaScript is not a type that can be strongly typed. TS Language is available with an optional static typing system and a type-inference system via the TLS (TypeScript Language Service). The type of variable not declared as a kind is inferred by the TLS using the value.

It provides types of definitions to be used with already existing JavaScript libraries. TypeScript Definition document (with .d.ts extension) contains definitions of the external JavaScript libraries. Thus, TypeScript code can contain these libraries.

It is compatible with Object-Oriented Programming concepts like interfaces, class inheritance, etc.

Bottom Line

Most JavaScript programmers and developers feel comfortable in a Typescript programming language. Therefore developers prefer this programing language over JavaScript programming language. So one can expect that in the coming years, the crowd of developers using JavaScript may shift towards Typescript shortly.

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