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TypeScript Basics - A Definitive Guide

GaneshMani on October 20, 2019

In this article, we will learn some basics of typescript which helps you to develop javascript application in a better way. TypeScript Basics - A D...

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Vincent Kraus • Oct 21 '19 • Edited

Nice one !
I recommand you to use const rather than let if you didn't reassign variable as :

const createNewArray = <T>(value: T): Array<T> => {
    const output : Array<string> = [];

    output.push(value);

    return output;
}

And last tips, you can declare type array as below for an array of string.

const output: string[] = []; // Array of string
const output2: number[]; // Array of number, etc...

GaneshMani • Oct 21 '19

Sure.. will change it..thanks for the heads up.. :-)

Simon Holdorf • Oct 20 '19

I wonder who started that thing with those He-Man images......

GaneshMani • Oct 21 '19

Me too...but i like that combo... that's why I kept it ..

ImTheDeveloper • Oct 20 '19

Have you had any experience converting an existing project over to typescript? Is there a way of slowly accomplishing the task or is it an all or nothing route?

Akash Kava • Oct 21 '19

Typescript allows you to declare type declarations, in which you can create definitions of old code and write new code in TypeScript. Slowly you can even rewrite old code in TypeScript one file at a time, and since TypeScript's output is pure JavaScript, your code can co exist along with old plain JavaScript and New TypeScript generated JavaScript.