21 interview questions on Typescript - Overview for developers (2025)

13 votes1340 runs0 comment

12 votes1327 runs0 comment

10 votes1264 runs0 comment

8 votes1382 runs

8 votes1243 runs

7 votes791 runs1 comment

6 votes1295 runs0 comment

type-inference

5 votes1285 runs0 comment

5 votes1276 runs0 comment

5 votes1231 runs0 comment

configuration

4 votes1270 runs0 comment

4 votes1238 runs0 comment

3 votes1265 runs0 comment

3 votes1244 runs

configuration

tsconfig.json

3 votes1243 runs1 comment

2 votes348 runs1 comment

1 vote770 runs0 comment

Jakeat Nov 3, 2023

1 vote587 runs2 comments

1 vote181 runs0 comment

0 vote1243 runs2 comments

21 interview questions on Typescript - Overviewfor developers (2025)

Test your technical skills before an interview of Typescript - Overview with 21 corrected questions. Beginner, Intermediate or Expert level.

21 interview questions on Typescript - Overviewfor developers (2025)

Test your technical skills before an interview of Typescript - Overview with 21 corrected questions. Beginner, Intermediate or Expert level.

Which of the following utility types makes all properties of a given type optional?

Define a custom type that represents a coordinate with an x and y property of type number in Typescript

Typescript: What is the type of result?

Create a generic identity function that returns the passed value in Typescript

Write a generic interface in Typescript

Import an add function from a TypeScript module math.ts

Typescript: What is the inferred type of the result variable?

Typescript: What is the resulting type of MyType in the following TypeScript code?

Find the error in the following TypeScript code:

What file is used to configure TypeScript?

Explain the difference between the `any` and `unknown` types in TypeScript.

What is the result of compiling the following TypeScript code?

Create a utils namespace that contains a Logger class for handling logging.

Which configuration option in tsconfig.json allows specifying files to include in the compilation?

What is the main purpose of generics in TypeScript?

What is the resulting type of Exclude<string | number | boolean, number>?

What is a tuple in TypeScript?

Declare a string type variable in TypeScript

Write a function in TypeScript that takes a number as input and returns its square.

How to apply a class decorator to a TypeScript class?