Most popular TypeScript interview questions and answers
If you are looking for TypeScript developer interview questions, go through this curated list of TypeScript interview questions and answers for acing that interview.
Whether you are a candidate actively looking for TypeScript developer jobs or a recruiter looking for TypeScript developers, the following list of TypeScript interview questions will be of great use to you.
Table of contentsTypeScript interview questions and answers (10)
TypeScript interview questions and answers
What are the Advantages of TypeScript?
The following are the advantages of using TypeScript:
- This allows backend developers to write front-end code more quickly.
What are the various types of TypeScript?
- Number, String, boolean, void, null, and undefined are examples of built-in values.
- User-defined: Enumerations (enums), classes, interfaces, arrays, and tuples are all part of it.
What are the TypeScript components?
TypeScript has three different sorts of components, which are as follows:
- Language is made up of syntax, keywords, and type annotations.
- The TypeScript Language Service is a service that allows you to write code in TypeScript. The language service supports the standard set of editor operations. The Language Service presents an additional layer, editor-like applications, around the basic compiler pipeline.
Who is TypeScript’s developer?
Anders Hejlsberg created TypeScript. In addition, he is a key part of the C# language development team. The TypeScript was first released on October 1st, 2012, with the version number 0.8. However, Microsoft developed and maintains it under the Apache 2 license. It was intended for the creation of a huge application.
Is it possible to integrate multiple.ts files into a single.js file?
Yes, numerous files can be combined. We must include the –outFILE [OutputJSFileName] option when compiling.
What access modifiers does TypeScript support?
TypeScript supports the access modifiers public, private, and protected, which determine a class member's accessibility, as shown below:
Public - All members of the class, its child classes, and the class instance have access to it.
Protected - All members of the class and its subclasses have access to them. However, the class instance is unable to access.
Private - Only class members have access to these.
What are variables in TypeScript?
A variable is a named memory region that is used to store values. In TypeScript, the type syntax for declaring a variable comprises a colon (:) after the variable name, followed by its type.
What is the difference between TypeScript and a statically typed language?
TypeScript is optionally statically typed, which means you can tell the compiler to ignore a variable's type. We can assign any type of value to the variable using any data type. During compilation, TypeScript will not perform any error checking.
What are TypeScript Interfaces?
For type-checking, the TypeScript compiler employs an interface that determines whether or not an object has a specified structure. The interface is a structure in your program that defines the contract. It specifies the syntax that classes must use. It just declares the members; it is the job of the derived class to define the members.
What exactly are Mixins?
- Instead of class A extending class B to obtain its functionality, function B accepts class A and produces a new class with this extra capability. Function B is a mixin.
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The above list of TypeScript interview questions will be an important part of your TypeScript interview preparation. These TypeScript interview questions will assist you in solving similar queries or generating new ones. A TypeScript interview, on the other hand, would not consist solely of these technical TypeScript interview questions. A TypeScript interview may also include questions regarding a person's social and life abilities. This allows the recruiter to determine whether the individual can persevere in difficult situations while also assisting their coworkers. As a recruiter, finding someone who gets along with the rest of the team is critical.
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