21 interview questions on Typescript - Overview for developers (2026)

13 votes1404 runs0 comment

12 votes1392 runs0 comment

11 votes1326 runs0 comment

8 votes1446 runs

8 votes1300 runs

7 votes846 runs1 comment

6 votes1359 runs0 comment

type-inference

5 votes1348 runs0 comment

5 votes1340 runs0 comment

5 votes1289 runs0 comment

configuration

4 votes1327 runs0 comment

4 votes1294 runs0 comment

3 votes1326 runs0 comment

3 votes1300 runs

configuration

tsconfig.json

3 votes1300 runs1 comment

2 votes403 runs1 comment

1 vote825 runs0 comment

Jakeat Nov 3, 2023

1 vote635 runs2 comments

1 vote193 runs0 comment

0 vote1301 runs2 comments

21 interview questions on Typescript - Overviewfor developers (2026)

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 (2026)

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?