A Beginners Guide to TypeScript

Edureify, the best AI Learning App is a studying app that aims to provide the best online coding Bootcamp to its students. The coding courses offered by Edureify help students learn all the techniques and tools required for efficient web development skills.

Coding requires developers to be efficient with the scripting languages also. Previously, Edureify has provided information on JavaScript and its frontend developing frameworks like Node.js, ReactJS, RxJs, and Vue.js. In this article, Edrueify will discuss TypeScript. Another efficient highly used scripting language.

Read on to know more.

What is TypeScript?

Maintained by Microsoft under the Apache 2 license, TypeScript is an open-source, object-oriented programming language. Anders Hejlsberg who was a core member of the C# Language development team introduced TypeScript.

TypeScript is an effectively typed superset of JavaScript which compiles to plain JavaScript. TypeScript is an application-scale JavaScript development language. It works on any browser, host, and operating system. A thing to note, TypeScript cannot be run directly on the browser. It first needs to be compiled and generated in a JavaScript file.

Reasons to use TypeScript

TypeScript has the following benefits that make it such a widely-used programming language-

• Strongly Type, Static typing, Optional Parameters, Modules, and more are supported by TypeScript
• Object-oriented programming features like classes, generics, inheritance, interfaces, and more are supported by TypeScript
• It is easy to learn
• It is fast and simple
• Before running the code, TypeScript enables the error checking feature during the compilation of the script
• Supports all JavaScript libraries
• Supports reusability
• Gives the ES6 benefits and more productivity
• Helps save time
• Provides source documentation, autocompletion, and type checking

Difference between TypeScript and JavaScript

The following are the key differences between TypeScript and JavaScript-

Advantages and Disadvantages of using TypeScript over JavaScript

The following are the key advantages of using TypeScript over JavaScript-

• Points out the errors during the compilation of the script unlike JavaScript which is an interpreted language
• The static typing and strong typing features available in TypeScript help in ensuring the correctness of the code. JavaScript does not have these features
• TypeScript has all the features of JavaScript along with some added features like ES6

Technically, there is one key disadvantage of using TypeScript over JavaScript, and that is-

• TypeScript requires more time to compile the code

Installing TypeScript using the Node.js Package Manager

One of the ways of installing TypeScript is using the Node.js Package Manager. The following are the steps to install TypeScript using the Node.js Package Manager-

• Step 1- First install Node.js. It helps to set up TypeScript on our local computer. To ensure the installation of Node.js is successful, type the following commands-

$ node-v
$ npm -v

• Step 2- Now install TypeScript. One can use the following command in the Terminal Window to install TypeScript-

$ npm install typescript –save-dev  // As dev dependency
$ npm install typescript -g              // Install as a global module
$npm install typescript@latest -g   // Install the latest version if you have the older version

• Step 3- To ensure the installation is complete, enter the following command in the Terminal Window-

$ tsc -v

Another way of installing TypeScript is with IDE.

Here was the beginner’s tutorial on TypeScript.

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• RxJs
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Some FAQs on TypeScript-

1. Who introduced TypeScript?

Anders Hejlsberg who was a core member of the C# Language development team introduced TypeScript.

2. What is TypeScript?

TypeScript is an effectively typed superset of JavaScript which compiles to plain JavaScript. TypeScript is an application-scale JavaScript development language. It works on any browser, host, and operating system. A thing to note, TypeScript cannot be run directly on the browser. It first needs to be compiled and generated in a JavaScript file.

3. Is TypeScript maintained by Microsoft?

Yes, TypeScript is maintained by Microsoft under the Apache 2 license.

4. What kind of programming language is TypeScript?

TypeScript is an object-oriented programming language.

5. From where can I learn more about TypeScript?

Take the best online coding Bootcamp courses of Edureify to learn more about TypeScript.