Thread by @CodingThunder

Why learn TypeScript?

I have posted the article here, incase you didn't read on @hashnode

Read on codingthunder.hashnode.dev/why-should-you… for better experience

#TypeScript #javascript #Microsoft #Thread 🧵

Some facts about TypeScript

- TypeScript was developed by Microsoft about 8 years ago (first public release: 1 October 2012)

- TypeScript is a superset of JavaScript, which means that every valid JavaScript code is a valid TypeScript code

- TypeScript is written in TypeScript. That's called recursion

- Morever, TypeScript source code is available on GitHub with 8.7k+ forks and 65.2k+ stars ⭐

- TypeScript is compiled to JavaScript

- C# and TypeScript were developed by the same developer, Anders Hejlsberg

Why should you learn TypeScript?🤔

1. TypeScript provides you with types in JavaScript.

What does that mean?

JavaScript not provide you to define the type of variable you want while declaring it. The type keeps changing according to the value assigned to it.

But using TypeScript you have this feature

TS :
var hello:String = "Hello World";

JS:
var hello = "Hello World";

TypeScript Compiler compiles your *.ts file and checks for any errors in types. If you try to assign another type of value to a variable, then your TypeScript Compiler will surely give you an error.

Means if you write this code

var hello:String = "Hello World";
hello = 123;

Then you will get this error Type 'number' is not assignable to 'String'

Looks like a nice catch, isn't it

Im different words TypeScript is strongly typed language

2. TypeScript is Open Source

What makes a developer feel more proud then using an Open Source software? Nothing, Yeah😇!

3. Huge community

TypeScript has a huge community of developers on Stackoverflow and other sites. So, if you will ever fall in some problem, there will be always someone to help you out.

4. Better for huge projects

TypeScript is mainly used for large projects becuase it provides much better exception catches.

Some awesome examples of Open Sourced TypeScript projects:

- Visual Studio Code
- Angular
- Tensorflow
- GitHub Desktop
- Vue

5. Much more like other popular languages like C#, C++, or Java

Many people feel that TypeScript is much related to C# because TypeScript's syntax is much more similar.

A default support for enum
Yeah! You heard that right. TypeScript has a default support for enum classes which is very much similiar to that of C++.

An example of enums in TypeScript

enum S {
NO = 0,
YES = 1
}

Unions in TypeScript
If you have learnt C or C++, then you may be probably familiar with union types.

Unions in TypeScript are somewhat different from them. In TypeScript union is a variable with multiple types.

Example of union in TypeScript

let myVar : string | number; //Variable with union type declaration

myVar = 100; //OK
myVar = 'Lokesh'; //OK

myVar = true; //Error - boolean not allowed

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