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TypeScript Interview Mastery – 2026 Q&A

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TypeScript Interview Mastery – 2026 Q&A

Included with

Gain insight into a topic and learn the fundamentals.
Beginner level

Recommended experience

5 hours to complete
Flexible schedule
Learn at your own pace

Gain insight into a topic and learn the fundamentals.
Beginner level

Recommended experience

5 hours to complete
Flexible schedule
Learn at your own pace

What you'll learn

  • Master the fundamentals of TypeScript, including types, interfaces, and functions.

  • Learn how to apply advanced TypeScript concepts such as overloading and generics.

  • Gain hands-on experience with TypeScript in real-world scenarios and coding challenges.

  • Prepare for TypeScript-focused interviews with practical exercises and problem-solving techniques.

Details to know

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Recently updated!

May 2026

Assessments

4 assignments

Taught in English

There are 4 modules in this course

This course features Coursera Coach! A smarter way to learn with interactive, real-time conversations that help you test your knowledge, challenge assumptions, and deepen your understanding as you progress through the course.

In this in-depth course, you’ll gain mastery over TypeScript concepts through hands-on exercises and real-world problem-solving, preparing you for interviews that test your coding and problem-solving abilities. You will start with the fundamentals, including setting up TypeScript, understanding its differences with JavaScript, and exploring its various types. Gradually, you’ll dive into advanced topics such as function overloading, the use of generics, and class manipulation. The course also includes practical exercises and coding challenges to solidify your understanding of TypeScript and its applications. As you progress, the course will guide you through key TypeScript features such as interfaces, enums, type inference, and working with classes and functions. You'll gain experience in integrating TypeScript with React, using advanced concepts like overloading, extending, and conditional types. By the end of the course, you’ll have the confidence to take on TypeScript interviews and ace coding challenges with ease. This course is ideal for developers preparing for TypeScript-focused interviews. If you have basic programming knowledge and want to deepen your understanding of TypeScript, this course will provide you with the knowledge and skills necessary for success in any TypeScript interview. By the end of the course, you will be able to define and implement TypeScript types, work with generics and advanced features like overloading, and apply these concepts in real-world coding challenges.

In this module, we will lay the foundation for your TypeScript interview journey. You’ll get a clear overview of the course, learn how to set up TypeScript, and dive into the key differences between JavaScript and TypeScript. Additionally, we’ll provide valuable resources to help you get started effectively.

What's included

6 videos1 reading

6 videosTotal 13 minutes
  • Course Introduction1 minute
  • Setting up TypeScript5 minutes
  • JavaScript vs TypeScript4 minutes
  • Does TypeScript improve our code out of the box?2 minutes
  • PDF File1 minute
  • I prepared source code for you0 minutes
1 readingTotal 10 minutes
  • Full Course Resource10 minutes

In this extensive module, we will explore TypeScript’s core features in depth. From defining basic types and functions to working with advanced types like union, enum, and generics, you'll gain the knowledge needed to write robust, type-safe applications. Additionally, we will cover TypeScript’s utility types, such as Partial, Required, and Record, for more flexible code.

What's included

33 videos1 assignment

33 videosTotal 137 minutes
  • How to define basic types inside TypeScript?5 minutes
  • What is the difference between explicit vs implicit types?4 minutes
  • Type a function getFullName correctly4 minutes
  • What is an interface in TypeScript?5 minutes
  • What is type in TypeScript?3 minutes
  • What is the difference between an interface and a type?6 minutes
  • What is union in TypeScript?5 minutes
  • How to narrow the union in TypeScript?6 minutes
  • What is void in TypeScript?2 minutes
  • What is never in TypeScript?1 minute
  • What is any in TypeScript?4 minutes
  • What is unknown in TypeScript?6 minutes
  • How to work with DOM in TypeScript?8 minutes
  • How to work with classes in TypeScript?8 minutes
  • What is an enum in TypeScript?6 minutes
  • What are generics in TypeScript?14 minutes
  • What is a tuple in TypeScript?4 minutes
  • What is an optional property in TypeScript?4 minutes
  • How to cover dynamic keys in the object?5 minutes
  • What is an index signature in TypeScript?2 minutes
  • What is a record type in TypeScript?1 minute
  • What is omit and pick in TypeScript?3 minutes
  • What is readonly in TypeScript?2 minutes
  • What is partial in TypeScript?3 minutes
  • What is required in TypeScript?1 minute
  • How to use TypeScript together with React?12 minutes
  • What is type inference in TypeScript?1 minute
  • What is literal type in TypeScript?2 minutes
  • What is tsconfig.json file?3 minutes
  • What are the core components of TypeScript?1 minute
  • How to transpile TypeScript to JavaScript?2 minutes
  • What is d.ts file in TypeScript?3 minutes
  • What is map file in TypeScript?2 minutes
1 assignmentTotal 15 minutes
  • Core TypeScript - Assessment15 minutes

In this module, we will dive into more advanced TypeScript concepts such as function overloading, extends, and type inference. Through practical exercises, you'll tackle real-world problems that will sharpen your skills in using TypeScript's most powerful and complex features.

What's included

9 videos1 assignment

9 videosTotal 25 minutes
  • Introduction for Advanced Section2 minutes
  • What is function overloading in TypeScript?6 minutes
  • What is extends in TypeScript?3 minutes
  • What is infer in TypeScript?6 minutes
  • Do it yourself - readonly3 minutes
  • Do it yourself - first2 minutes
  • Do it yourself - tuple length1 minute
  • Do it yourself - if1 minute
  • Do it yourself - concat1 minute
1 assignmentTotal 15 minutes
  • Advanced TypeScript - Assessment15 minutes

In this module, we will assign practical exercises to help you solidify your understanding of TypeScript and prepare for real-world interviews. This will ensure that you are fully equipped to tackle TypeScript challenges with confidence.

What's included

1 video2 assignments

1 videoTotal 1 minute
  • Homework1 minute
2 assignmentsTotal 75 minutes
  • Full Course Assessment60 minutes
  • Full Course Practice Assessment15 minutes

Instructor

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Frequently asked questions

TypeScript is a strongly typed, compiled superset of JavaScript that adds static types to the language. This makes it easier to catch errors during development, resulting in more reliable and maintainable code. TypeScript is increasingly becoming the preferred choice for large-scale web applications, as it enhances the development process, improves code quality, and offers better tooling and debugging capabilities.

This workshop focuses on preparing you for TypeScript interviews with practical problem-solving exercises. It covers a wide range of TypeScript concepts, from basic types to advanced features like function overloading and conditional types. By the end of the workshop, you’ll be well-equipped to handle real-world TypeScript development and confidently approach technical interviews.

After completing this workshop, you will be able to effectively use TypeScript in your development projects. You will have a solid understanding of core TypeScript concepts, such as type annotations, interfaces, generics, and advanced features like overloading and type inference. Additionally, you’ll be prepared to tackle TypeScript-related problems in interviews and integrate TypeScript into real-world applications.

This workshop assumes a basic understanding of JavaScript and general programming concepts. You should be familiar with JavaScript syntax and concepts such as variables, functions, and objects. If you're already comfortable with JavaScript, you'll quickly grasp TypeScript’s added features and benefits.

This workshop is perfect for developers who are looking to master TypeScript and prepare for developer interviews that require TypeScript knowledge. If you're a JavaScript developer who wants to learn TypeScript or someone preparing for technical interviews in TypeScript, this workshop will help you enhance your skills and build confidence.

The workshop takes approximately 2 hours to complete. It is designed to be a focused, hands-on learning experience, enabling you to quickly understand TypeScript's key concepts and apply them to practical exercises.

Yes, you can preview the first video and view the syllabus before you enroll. You must purchase the course to access content not included in the preview.

If you decide to enroll in the course before the session start date, you will have access to all of the lecture videos and readings for the course. You’ll be able to submit assignments once the session starts.

Once you enroll and your session begins, you will have access to all videos and other resources, including reading items and the course discussion forum. You’ll be able to view and submit practice assessments, and complete required graded assignments to earn a grade and a Course Certificate.

If you complete the course successfully, your electronic Course Certificate will be added to your Accomplishments page - from there, you can print your Course Certificate or add it to your LinkedIn profile.

This course is currently available only to learners who have paid or received financial aid, when available.

Yes. In select learning programs, you can apply for financial aid or a scholarship if you can’t afford the enrollment fee. If fin aid or scholarship is available for your learning program selection, you’ll find a link to apply on the description page.

Financial aid available,