TypeScript Coding Challenges for Practice

Declare an interface and implement it with a class using the implements keyword.

Define a TypeScript class with typed properties, a constructor, and a method that returns a value.

Define an abstract class with an abstract method that must be implemented by subclasses.

Use Array.reduce<T>() with generic type parameter for type-safe array transformation.

Use TypeScript's Map<K,V> with generic type parameters for type-safe key-value storage.

Use a TypeScript tuple type [string, number] to represent a name-age pair with fixed positions and types.

Use TypeScript's Set<number> with generic type parameter to store unique numbers.

Use TypeScript union types and type guards to calculate areas of different shapes.

Use a TypeScript type alias to define and use a Person object type.

Use TypeScript generics to safely extract the first element from any typed array.

Use TypeScript generic constraints (extends) to write a function that works with any type that has a length property.

Write a function with explicit TypeScript parameter and return type annotations.

Get the length of a string or number of digits using TypeScript union types.

Use TypeScript string literal union types for type-safe status values.

Use TypeScript optional properties in a configuration object.

Use TypeScript generic Array<T> syntax to type array parameters.

Use the keyof operator to create a type-safe function that accesses object properties by key.

Use a literal union type like 'small' | 'medium' | 'large' to restrict function parameter values at compile time.

Use Pick<T,K> and Omit<T,K> utility types to select or exclude specific properties from a type.

Use the Partial<T> utility type to make all properties of a type optional for partial updates.

Use the ? modifier in an interface to mark a property as optional, with undefined as a valid value.