TypeScript Interview - Intermediate Level
For developers with 2-4 years of TypeScript experience. Master advanced types, utility types, generics, type guards, and TypeScript best practices.
25-30 minutes
2-4 years of TypeScript experience
About this TypeScript interview
Elevate your TypeScript skills. Practice advanced concepts like union types, discriminated unions, generics with constraints, utility types (Partial, Pick, Omit), type guards, and mapped types. Perfect for mid-level roles.
Who is this for?
Mid-level TypeScript developers
Full-stack developers using TypeScript
Developers building type-safe applications
Those preparing for mid-senior TypeScript roles
What you'll practice
Using union and intersection types
Creating discriminated unions
Writing generic functions and classes
Applying utility types effectively
Implementing type guards
Working with advanced type patterns
Topics covered
Advanced Types
Union types
Intersection types
Discriminated unions
Literal types
Generics
Generic functions
Generic constraints (extends)
Multiple type parameters
Generic interfaces
Utility Types
Partial, Required, Readonly
Pick, Omit, Exclude
Record, ReturnType
Parameters, ConstructorParameters
Type Guards & Narrowing
typeof and instanceof
Custom type predicates
Discriminated unions pattern
Nullish coalescing
Example questions
Q:
What are discriminated unions and when would you use them?
Q:
How do you create a generic function with constraints?
Q:
Explain the difference between Pick and Omit utility types
Q:
How do type guards work in TypeScript?
Q:
What is the purpose of the extends keyword in generics?
Q:
How would you make all properties of an object optional?
Preparation tips
Master union and intersection types
Practice writing generic functions
Learn all built-in utility types
Understand type narrowing techniques
Build type-safe APIs
Study TypeScript with React (if applicable)
Continue your journey
Frequently asked questions
What is the TypeScript Interview - Intermediate Level?
For developers with 2-4 years of TypeScript experience. Master advanced types, utility types, generics, type guards, and TypeScript best practices.
Who is this typescript intermediate interview for?
This interview is perfect for: Mid-level TypeScript developers, Full-stack developers using TypeScript, Developers building type-safe applications, Those preparing for mid-senior TypeScript roles. It's designed for developers with 2-4 years of TypeScript experience.
How long does the typescript intermediate interview take?
The interview typically takes 25-30 minutes to complete.
What topics are covered in this typescript interview?
You'll practice: Using union and intersection types, Creating discriminated unions, Writing generic functions and classes, and more.
Is this a real or AI-powered interview?
This is an AI-powered mock interview that simulates real technical interviews. The AI adapts to your responses and provides realistic interview questions for typescript intermediate level.
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