JS Practice — Built-in Objects

Utility Types — Object.fromEntries

📖 Usage Example

const entries: [string, number][] = [['a', 1], ['b', 2]]
Object.fromEntries(entries)   // → { a: 1, b: 2 }

Object.fromEntries converts an array of [key, value] pairs into an object.

Utility Types: fromEntries

Challenge: Implement fromEntries<K extends string, V>(entries: [K, V][]): Record<K, V> building an object from key-value pairs.

fromEntries([['a', 1], ['b', 2]])  // → { a: 1, b: 2 }

💡 Hints (1)