Mastering TypeScript with Marathon Interview Questions (Udemy.com)
Watch, learn & practice TypeScript basics to advanced concepts & crack any interview!
Created by: Nirmal Joshi
Last updated January 2025
What you will learn
- Learn and understand what is TypeScript and how it works
- Basic to advanced level practical concepts in TypeScript development
- Real-world TypeScript interview questions asked in IT companies world-wide
Course Description
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 understand 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:
Introduction
TypeScript fundamentals
Array & Tuple
Functions
ENUM
Object Oriented TypeScript
TypeScript compiler
Interface
Decorators
TypeScript Modules & Namespaces
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.
Instructor Details
- 4.7 Rating
247 Reviews
Nirmal Joshi
Nirmal Joshi is the Founder and CEO of INIT Tech Labs, a software development company building web, mobile and AI solutions for businesses — and Technology Director at Anagh Technologies, New Jersey. His teams work every day with the technologies these courses teach: AI systems, agentic AI, LLM-powered products, NLP, deep learning, and modern web and mobile applications.
These courses exist because of one belief: the people who build technology for a living are the right people to teach it. Everything taught here has been built, tested and shipped for real clients first — you learn from practitioners, not presenters.
Every course follows three rules. Plain language — every term explained before it is used. Real screens — you see exactly what you will see. Copy-ready steps — follow along and get the same result.
From complete beginner to working professional — no hype, just skills you can use the same day.
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Reviews
By Simon Booth on 4/25/2025
This is a good course on TypeScript. It could do with some downloadable documentation and maybe the examples put onto GitHub.
By Tejani shubham on 4/26/2024
Thank you for the TypeScript course. Your clear explanations and practical exercises made learning enjoyable and effective. Now I feel more confident in my TypeScript skills. Looking forward to learn more !!
By Darshan on 3/24/2024
Firstly, I want to thank to the instructors of this awesome online course for their intellectual teachings. This course will pave a way for understanding concepts of Typescript from basics to advanced. This course is unique in terms of presentations and the method of teaching.
By Alvin Johnson on 1/5/2024
So far this course is very direct and concise the instructor is highly knowledgable and well spoken, This teaching method is above my expectations and is exceptionally impressive.
By Josh Tracy on 12/10/2023
it was a good match and exactly what I expected. I learned a lot and will likely review specific sections of this course again as I prep for interviews.
By Bastian Killermann on 6/13/2023
Dieser Kurs hat überzeugt mit Fachkompetenz und guten Erklärungen. Die Geschwindigkeit war ein wenig zu langsam, also ein bisschen mehr Zeit einplanen. An sich bietet der Kurs was er verspricht.
By Daniel Borges on 6/1/2023
I was expecting this course to be terser where it rattled off some questions followed by answers, but it turned out to be a review and a tutorial wrapped into one. Nicely done.
By Shivang Vyas on 2/12/2023
I'm extremely pleased with the quality of the course material. It was very comprehensive, covering everything from basic to advanced topics. The instructor is knowledgeable and engaging, and he did a great job of breaking up the lessons into manageable chunks that were easy to understand. Overall, I highly recommend this course for anyone looking to learn TypeScript or expand their knowledge in this area. It's well worth the time and money!
By Shubham Saxena on 5/28/2022
This is my third back-to-back course from Nirmal Sir. I'm glad that i came across such an amazing series with full of content which is really helping in my day-to-day roles and also in my interviews. Thanks for this amazing content.
By Sandeep Roy on 5/17/2021
Great course! It's just what I was looking for. Nirmal sir explains the codes & concepts in a smooth way and it is really easy to follow what he is teaching. Especially the interviews questions are a big bonus for me as I don't have to refer any other material for my preparation. Thanks a lot, it has been a success to buy this course.
Quality Score
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Overall Score : 94 / 100








