Mastering TypeScript with Marathon Interview Questions 2021

Nirmal Joshi
3 min readJun 7, 2021

Watch, learn & practice TypeScript basics to advanced concepts & crack any interview!

TypeScript has gained massive popularity in recent years. According to Stackoverflow’s 2020 survey, TypeScript is the 2nd most loved programming language in the world (it was 3rd most loved in 2019) — clearly showing that the increase in popularity is quite astounding.

TypeScript (developed by Microsoft) is an open-source programming language that compiles into JavaScript. Since its release in 2012, the language has remained in active development and is gaining popularity and recognition every year.

The development community strongly associated TypeScript with Angular in the early days but now you can use it with practically anything like ReactJS, Node.js, Deno, etc.

Is it too late to start learning TypeScript now?

Well, it is never too late if you start TODAY! Gain an advantage by being the one among those who really understands TypeScript and not just treats this as a college project.

TypeScript & JavaScript are the same right? NO!

While TypeScript is a superset of JavaScript; it means TypeScript eventually gets compiled into JavaScript, so they are not the same.

The main benefit of TypeScript is its static typing feature that provides additional information about your code which serves as better documentation for other developers and enables them to catch more mistakes during compilation right away.

The language is modern with features like interfaces, unions, intersection types, enums, classes, and visibility scopes. Additionally, because it is a superset, it has all the modern JavaScript features like destructuring, arrow functions, and optional chaining operators too.

This course is just not about the basics, I will take you to advanced levels with practical real-world interview questions which will help you to understand the concept and also answer properly at the same time.

What’s in the course?

Like all my courses, we have sections packed with beginner to advanced level content, so it is advised to check the full course curriculum first to get a clear idea of all the topics and then start step by step. Here’s a quick summary of what you’ll find in the course:

  1. Introduction
  2. TypeScript fundamentals
  3. TypeScript compiler & project configuration
  4. Array & Tuple
  5. Functions
  6. ENUM
  7. Object-Oriented TypeScript
  8. Interface (Object types)
  9. Generics
  10. Modules & TypeScript namespaces
  11. Decorators

Who is this course for?

  • New/junior/expert developers who want to learn TypeScript from scratch.
  • Developers who want to crack TypeScript interviews.
  • Expert developers who want to upgrade their existing TypeScript skills.

I recommend that you have a good understanding of OOPs concepts and basic JavaScript before continuing on with this tutorial, so as to make the most of it. If you have any JavaScript-related questions, feel free to check out my JavaScript course.

Take action today and enroll in this comprehensive course.

About me:

Founder and CEO of an IT company in India, I have more than 23+ years experience of in dealing with people, processes, and codes. I started online training for my students when it was not in fashion and have trained more than 1000 students/working professionals personally which has helped them to secure awesome jobs or even start their own business.

I am also an active corporate trainer for several years now and have been consulting with top Fortune 500/1000 companies to streamline their development projects efficiently. My goal is to share knowledge with a primary focus on advanced tools & techniques, projects, and standard programming practices to help my students understand the basics and fundamentals and make awesome technological implementations.

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Nirmal Joshi

A founder and CEO of an IT company in India, I have more than 22+ years’ experience of dealing with people, processes and codes.