JS Practice — Built-in Objects

Generics — flatten<T>

📖 Usage Example

flatten([[1, 2], [3, 4], [5]])   // → [1, 2, 3, 4, 5]

flatten<T> collapses one level of nesting, returning a flat array of the same element type.

Generics: flatten<T>

Challenge: Implement flatten<T>(arr: T[][]): T[] collapsing one level of nesting.

flatten([[1,2],[3,4]])  // → [1,2,3,4]

💡 Hints (1)