Simulating a Typescript Interview

Simulating a Typescript Interview

Stay a step ahead by knowing what your next interview looks like

Stay a step ahead by knowing what your next interview looks like.

Frontend interviews are getting tougher every day. Being well prepared is key. As TypeScript demand grows by the day it’s a subject that will surely come up in your interview.

This article is a simulation of a TypeScript interview. Even if you’re not looking for a new job, you can use it to test your TypeScript knowledge. The interview is divided into two parts:

  • Part 1: Five TypeScript questions
  • Part 2: Six live coding exercises

Part 1: TypeScript General Question

These TypeScript questions are just a warmup — an initial kick-off conversation before the live coding.

1. What’s the difference between TypeScript and JavaScript?

Typescript is a superset of Javascript. That means that all code that runs on Javascript will run on TypeScript + some other features. However, the Typescript code is not understandable by browsers — it needs to be transpired to JavaScript.

JavaScript is weakly typed whereas Typescript is strongly typed.

2. What are the benefits of TypeScript?

There a many benefits to using Typescript:

  • Type checking makes your code safer.
  • Type checking makes your code more readable.
  • As it’s optionally typed you can disable typing for some edge scenarios or third-party libraries.
  • Works for all your existing JavaScript.
  • Babel.
  • Catches most of the null check bugs.

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