Function toMap

toMap<T, K, V>(
arr: T[],
fn: (item: T, index: number) => [key: K, value: V],
): Map<K, V>
Maps the provided array into a map
Type Parameters
- T
- K
- V
Parameters
- arr: T[]
  Array of items to be entered into a map
- fn: (item: T, index: number) => [key: K, value: V]
  A mapping function to transform each item into a key value pair
Returns Map<K, V>
Usage
```
const map = toMap([5, 4, 3, 2, 1], (item, i) => [i, item]);

console.log(map); // Map(5) { 0 => 5, 1 => 4, 2 => 3, 3 => 2, 4 => 1 }
```
- Defined in array.ts:63