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1.
What is TypeScript and how does it differ from JavaScript?
Answer:
TypeScript Fundamentals
- 2.
Can you explain what is meant by “TypeScript is a superset of JavaScript”?
Answer: - 3.
What are the basic types available in TypeScript?
Answer: - 4.
How do you declare variables in TypeScript?
Answer: - 5.
What are Interfaces in TypeScript and how do they work?
Answer: - 6.
Describe the Enum type and when you might use it.
Answer: - 7.
How do you define and use a function in TypeScript?
Answer: - 8.
What does “type inference” mean in the context of TypeScript?
Answer: - 9.
Explain the use of ‘let’ and ‘const’ in TypeScript.
Answer: - 10.
How do you compile TypeScript files into JavaScript?
Answer:
TypeScript Classes and Objects
- 11.
Explain classes in TypeScript. How are they different from ES6 classes?
Answer: - 12.
How do you implement Inheritance in TypeScript?
Answer: - 13.
What are access modifiers and how do they work in TypeScript?
Answer: - 14.
Discuss Abstract classes and their purposes in TypeScript.
Answer: - 15.
Can you describe the use of Constructors within TypeScript classes?
Answer: - 16.
What are Property Decorators and how do you use them?
Answer: - 17.
How do getters and setters work in TypeScript?
Answer: - 18.
Explain Method Overloading in TypeScript.
Answer: - 19.
What is the purpose of the ‘static’ keyword in TypeScript Class?
Answer:
TypeScript Types and Type Assertions
- 20.
How do you define custom types with Type Aliases?
Answer: - 21.
Can you explain Union types and provide an example?
Answer: - 22.
How do Intersection types work in TypeScript?
Answer: - 23.
What are Tuple types and when should they be used?
Answer: - 24.
Explain Type Assertions and why they are useful.
Answer: - 25.
How do you use the ‘typeof’ type guard in TypeScript?
Answer: - 26.
Can you create types from existing data using Type Inference?
Answer:
TypeScript Generics
- 27.
What are Generics in TypeScript and why are they used?
Answer: - 28.
How do you create a generic function?
Answer: - 29.
Discuss how Generic Interfaces can be defined.
Answer: - 30.
Explain how Generics work with Classes.
Answer: - 31.
Can you provide an example of a generic constraint?
Answer:
TypeScript Advanced Types and Techniques
- 32.
What is a Discriminated Union in TypeScript?
Answer: - 33.
How do you declare a Readonly type?
Answer: - 34.
Can you describe the use of Mapped types?
Answer: - 35.
Explain Conditional types in TypeScript.
Answer: - 36.
What are Index types and how do you use the keyof keyword?
Answer: - 37.
How does Type Casting differ from Type Assertions?
Answer: - 38.
Discuss the Partial, Required, Readonly, and Pick utility types.
Answer: - 39.
What is the ‘never’ type and when would it be used?
Answer:
TypeScript Modules and Namespaces
- 40.
How do you organize code with Modules in TypeScript?
Answer: - 41.
When would you use Namespaces?
Answer: - 42.
What is the difference between Internal and External modules?
Answer: - 43.
How do you export and import modules?
Answer: - 44.
Can you describe module resolution and its strategies?
Answer: - 45.
Discuss the compatibility of TypeScript modules with ES6 modules.
Answer:
TypeScript Decorators and Metadata
- 46.
What are Decorators and how do you use them?
Answer: - 47.
Can you define Class Decorators and how they can alter Class behavior?
Answer: - 48.
How do you use Method Decorators in TypeScript?
Answer: - 49.
What are Accessor Decorators?
Answer: - 50.
Explain how to use Property Decorators.
Answer: - 51.
How do Decorators compose in TypeScript?
Answer: - 52.
Discuss Reflection and how it works with Decorators.
Answer:
TypeScript Configuration and Compilation
- 53.
Explain the purpose of ‘tsconfig.json’.
Answer: - 54.
How do you include and exclude files in compilation using ‘tsconfig.json’?
Answer: - 55.
What are some common compiler options in TypeScript?
Answer: - 56.
How does TypeScript support source maps?
Answer: - 57.
Discuss incremental build support in TypeScript.
Answer: - 58.
Explain how the “noImplicitAny” compiler option works.
Answer: - 59.
How do you enable strict null checks in TypeScript?
Answer:
TypeScript Typings and @types
- 60.
How do you manage type definitions for external libraries in TypeScript?
Answer: - 61.
What is DefinitelyTyped and how is it related to TypeScript?
Answer: - 62.
Explain how to use typing files from npm.
Answer:
Integrating TypeScript with Frameworks
- 63.
How do you integrate TypeScript with Angular?
Answer: - 64.
Explain integrating TypeScript with React.
Answer: - 65.
How do you use TypeScript with Vue.js?
Answer: - 66.
Discuss using TypeScript in a Node.js application.
Answer:
TypeScript Tooling and Ecosystem
- 67.
What are the benefits of using tools like TSLint?
Answer: - 68.
Can you describe how to set up a build process with TypeScript and Webpack?
Answer: - 69.
How does TypeScript work with Babel?
Answer: - 70.
Explain using TypeScript with Visual Studio Code or other IDEs.
Answer:
TypeScript Best Practices and Patterns
- 71.
What are the best practices for structuring a TypeScript application?
Answer: - 72.
How do you handle async/await in TypeScript?
Answer: - 73.
Discuss how you manage state in TypeScript-based applications.
Answer: - 74.
What are some common design patterns used in TypeScript?
Answer: - 75.
How do you debug a TypeScript application?
Answer:
TypeScript Testing and Quality Assurance
- 76.
How do you write unit tests for TypeScript code?
Answer: - 77.
What testing frameworks are commonly used with TypeScript?
Answer: - 78.
Discuss how to perform end-to-end testing in TypeScript applications.
Answer:
TypeScript for Backend Development
- 79.
How do you use TypeScript with Express.js?
Answer: - 80.
Discuss creating RESTful services with TypeScript.
Answer: - 81.
Explain how to handle data modeling in a TypeScript backend.
Answer: - 82.
How do you manage database interactions in TypeScript?
Answer: - 83.
Discuss authentication and authorization strategies in TypeScript APIs.
Answer:
TypeScript Advanced Practices
- 84.
Discuss using TypeScript for Domain-driven Design (DDD).
Answer: - 85.
How do you implement Event Sourcing in TypeScript?
Answer: - 86.
Explain the concept of Isomorphic apps with TypeScript.
Answer:
TypeScript Types and ECMAScript Standards
- 87.
How does TypeScript align with the latest ECMAScript standards?
Answer: - 88.
What enhancements has TypeScript brought to match ES6 and beyond?
Answer: - 89.
Discuss how TypeScript handles async iterators.
Answer:
TypeScript Performance Optimization
- 90.
How do you optimize the performance of a TypeScript application?
Answer: - 91.
Discuss tree shaking in TypeScript.
Answer: - 92.
Explain how to optimize bundle size with TypeScript.
Answer:
TypeScript 4.x Features and Updates
- 93.
What are the new features included in the latest TypeScript release?
Answer: - 94.
How do you use Template Literal Types?
Answer: - 95.
Discuss the improvements to Inference in Conditional Types.
Answer: - 96.
What is the use of labeled tuple elements?
Answer:
TypeScript Community and Development
- 97.
How can you contribute to the TypeScript community or TypeScript itself?
Answer: - 98.
Discuss the role of TypeScript in open-source development.
Answer: - 99.
Explain how to stay updated with TypeScript’s changes and best practices.
Answer:
Transitioning from JavaScript to TypeScript
- 100.
What steps should a JavaScript developer take to start using TypeScript effectively?
Answer:
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