Write a Generic Identity Function

TypeScript

Technical Specification

Implement a generic identity function that returns whatever value it receives with the correct type.

Input/Output Samples

Input:identity<string>('hello')

Output:string

Input:identity<number>(123)

Output:number

Optimal Logic Path

function identity<T>(value: T): T {
  return value;
}

Architectural Deep-Dive

Generics let the function adapt to the caller-specified type while preserving type safety.