What is TypeScript?
TypeScript is an object-oriented programming language created and maintained by Microsoft Corporation. This is the superset of JavaScript and possesses all of its components. It also knows that it can be modern JavaScript with classes, optional types, and interfaces. It is a strongly typed language. The web browser cannot run TypeScript. Additional TypeScript Compiler compiles the code and gets into JavaScript code which runs on the web browser.
Installation Process
Given below shows the installation process:-
- Go to the nodejs.org site and download it.
- Install the Node js, then open the command prompt or terminal and check the version of a node using type node – v and hit enter.
- Now set up Typescript by NPM. Once again, through your command prompt or terminal, type the next command to set up Typescript.
- This command can install Typescript globally, allowing you to utilize it in every project. Following the setup finished, you may check the version by tsc -v.
- You can now use Typescript. Generate a new file out of your code editor, and an extension of this file should be .ts.
- Web browsers do not understand the Typescript program; therefore, the TypeScript Compiler compiles the code and converts it into JavaScript.
- This command instantly makes a JavaScript file and converts the Typescript program into a .js extension.
For example, it creates the file myProgram.ts into a myProgram.js JavaScript file.
Strong Typing
It supports ES (ECMAScript) 6 or ES 2015 JavaScript Version, but ES 2015 is not supported in all browsers since TypeScript converted into the ES5 version. However, ES5 supports and runs in all browsers.
Let’s proceed while using the critical features of Typescript. Differing from JS, we can specify the types of each of our variables since the number, string, boolean, array, tuples, enums, any, and much more.
Beneath, observe a few examples of strong typing:
Object-Oriented Feature of TypeScript
It can be a simple object-oriented programming language offering solid features of this, including classes, interfaces, modules, inheritance, and so on.
For example, we can define a class:
We have created a Human class and could generate instances with the new keyword. Once assigning the Human( ) object, we must not express their type again. It happens instantly by Typescript.
In Object-Oriented Programming, we have an essential method known as a constructor( ). Every single class offers a default constructor method essentially, as well as familiar to create an instance of this class:
In Object-Oriented Programming, access modifiers are in use for limiting or permitting access to the variables of a class from external.
You will find three different kinds of access modifiers:
- Public: Allows access from beyond a class.
- Private: Doesn’t enable access from beyond a class.
- Protected: Allows access only in a class as well as derived classes.
Advantages
Listed below are some advantages:
- It is free and open source; it is simple to write a program in TypeScript with little understanding.
- This can be helpful for both client-side and also server-side development.
- The compiler may convert to JavaScript-equivalent program that runs on all web browsers.
- It has superb tooling support with IntelliSense, i.e., TypeScript program compilation and IntelliSense. Like a code can be added, IntelliSense gives valuable hints.
- The program in TypeScript is much more readable. The programmer can also add or perhaps replace the program quicker since it assists them in keeping in mind what every bit of code is described as.
- The program is easy as well as clean in TypeScript. Like the developers write the program, Static typing in TypeScript finds bugs that allow them to create a more robust program and keep it.
Uses of TypeScript
- Code refactoring in a dynamic language is additionally difficult, developing harder to keep the good program; it can assist in program refactoring with suitable software.
- Program quality carries out with static analysis software that mainly uses static-type programs. If so, TypeScript is excellent.
- Web browsers have no great execution of all of the features and hence need support from older web browsers. It facilitates the characteristics and may compile down to older emit.
- Performing refactoring improves speed.
- It is more remarkable for the compiler to catch errors rather than possess unsuccessful points at runtime. It will be among the best types of documentation you could have.
- The function signature is a theorem, as well as the function body. It provides numerous rewards for efficiency and then programmer knowledge.
- Adding it to the current JavaScript project is simple and provides minimal overhead. It is not just different from Angular.
- Programmer teams are combining additional powerful frontend frameworks, such as React and Vue, with TypeScript to create reliable, efficient, and scalable applications.
How will this Technology Help in Career Growth?
- Angular 2 to Angular 7 may have used this language. In contrast to JavaScript, it can be quite a simple language.
- In contrast to JS Angular, it is primarily a total MVC (Model-View-Controller) platform, which can be essential for any decent-sized web application.
- This can be increasingly more famous in the Front end environment. Many of these people want to work with or perhaps learn TypeScript for future projects.
Those two factors are excellent and will help forecast a great future for the upcoming Five years.
Final Thoughts
JavaScript and TypeScript are continuously growing, although they are not competing against one another. It is made to enhance and improve JavaScript – certainly not replace it. The near future could see all of them getting much the same in including good results. TypeScript stays the statically typed substitute.
Frequently Asked Questions (FAQs)
Q1. Is TypeScript a frontend or backend language?
Answer: It is a superset of the popular programming language JavaScript. Hence, a developer can use it in all the places where JavaScript is used. Recently, many developers have been using JavaScript extensively in frontend development; developers also use JavaScript in backend programming too. Hence it is also helpful in both backend and frontend development.
Q2. Which is the modern framework built entirely on TypeScript?
Answer: The Angular platform is entirely built on TypeScript. It supports Angular documentation and is also a primary language.
Q3. What is the drawback of TypeScript compared to JavaScript?
Answer: It doesn’t support abstract classes and takes much longer time than JavaScript to compile the code. The definition file and its quality are essential while using the third-party library.
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