[100% Off] Typescript Practice Tests: 600+ Mcqs &Amp; Interview Prep | 2026
Master TypeScript with 6 full-length practice exams covering types, generics, React, Node.js, tooling & real interviews.
What you’ll learn
- Master TypeScripts type system: interfaces
- unions
- generics
- and type narrowing with confidence,Apply object-oriented patterns: classes
- access modifiers
- abstract classes
- and SOLID principles,Use advanced types: conditional types
- mapped types
- template literals
- and utility types,Type React components
- hooks
- Express APIs
- and test suites the way working developers actually do
Requirements
- Comfort with core JavaScript is helpful — variables
- functions
- objects
- arrays
- and async/await — but no prior TypeScript experience is required. Fundamentals are covered from the ground up in Test 1 before the series builds into more advanced material
- so beginners are welcome to start here.
Description
This practice test series is built for developers who want to genuinely master TypeScript — not just memorize syntax, but understand *why* the type system behaves the way it does.
The course includes 6 full-length practice tests, 100 questions each (600 questions total), organized into a deliberate learning path:
1. TypeScript Fundamentals & Basic Type System — variables, interfaces, unions, narrowing, and the type-inference rules every TypeScript developer relies on daily
2. Functions, Classes & Object-Oriented Programming — access modifiers, abstract classes, method overriding, and the design principles behind well-structured TypeScript code
3. Generics & Advanced Types — conditional types, mapped types, template literal types, and the full set of built-in utility types
4. Modules, Declaration Files & Advanced Type System Features — organizing multi-file projects, writing your own .d.ts files, and extending third-party library types
5. Compiler Configuration & Tooling — tsconfig.json options explained with real reasoning, plus ESLint, Prettier, CI integration, and monorepo patterns
6. Ecosystem: React, Node & Testing with TypeScript — typing hooks, Express routes, Jest tests, and the libraries (Zod, Prisma, tRPC) real teams use
Every question includes a detailed explanation for every answer choice — not just the correct one — so you understand exactly why each option is right or wrong. Here’s a real example from the course:
Q: Which of the following best describes the `satisfies` operator?
A) It checks that a value’s type is compatible with a given type, while preserving the value’s own more specific inferred type (unlike a type annotation, which would widen the expression’s type). Correct — satisfies validates compatibility while keeping the narrower inferred type.
B) It behaves identically to `as`, performing an unchecked assertion. Incorrect — unlike `as`, satisfies genuinely validates compatibility rather than just forcing the compiler’s view.
C) It’s used exclusively to validate function parameter counts. Incorrect — it’s a general-purpose shape-validation operator, not limited to parameter counts.
D) It converts the value into a Promise. Incorrect — it’s a compile-time construct with no runtime transformation.
That’s the level of reasoning behind every one of the 600 questions — not just “is this right,” but “why is everything else wrong.”
Whether you’re preparing for a technical interview, ramping up on a new TypeScript codebase, or simply want to close the gaps in your understanding, this series gives you a structured, thorough, and honest way to test yourself.
