TypeScript Interview Mock
A 450-question bank of real interview topics, served as 40-question, 60-minute mocks: everyday types, structural typing, narrowing, functions and classes, generics, mapped and conditional types, compiler options, declaration files and module interop, and applied type-safe patterns. Levels run from fundamentals to type-level puzzles, and every option explains its reasoning.
Syllabus
5 domains · 10 skills, weighted like the official blueprint.
1Type System Foundations20% of the exam · 2 skillsMastery—
2Narrowing, Functions and Classes20% of the exam · 2 skillsMastery—
3Generics and Type-Level Programming30% of the exam · 3 skillsMastery—
4Compiler, Declarations and Modules20% of the exam · 2 skillsMastery—
5Applied TypeScript10% of the exam · 1 skillsMastery—
Sample questions with answers
10 questions from the TS bank, with an explanation for every option. No sign-up needed.
Questions about this exam
How many questions are in a full TypeScript Interview Mock, and how long is it?
40 questions in 60 minutes. Each mock draws questions from every domain in proportion to its weight, so the mix matches the blueprint.
What score do you need to pass it?
Results are reported from 0 to 100, and 70 is the passing score used in these mocks. Harder questions carry more weight.
What does the TypeScript Interview Mock cover?
5 domains: Type System Foundations (20%), Narrowing, Functions and Classes (20%), Generics and Type-Level Programming (30%), Compiler, Declarations and Modules (20%) and Applied TypeScript (10%).
How can I practise for it?
Start with the free 15-question diagnostic to find your weak spots, drill any skill with an explanation after every answer, retry your mistakes with spaced review, then sit timed full mocks.
How is my readiness score worked out?
It weighs your recent answers on each skill by difficulty, combines the skills by their exam weight into a predicted score, and reports your chance of reaching the pass mark. How scoring works