Function firstEntryByValue

Finds first entry by value.

const map = new Map();
map.set('hello', 'a');
map.set('there', 'b');

const entry = firstEntryByValue(map, 'b');
// Entry is: ['there', 'b']

An alternative is firstEntryByValue to search by predicate function.

firstEntryByValue<K, V>(map, value, isEqual?): undefined | readonly [K, V]
Type Parameters
- K
- V
Parameters
- map: IWithEntries<K, V>
  Map to search
- value: V
  Value to seek
- isEqual: IsEqual<V> = isEqualDefault
  Filter function which checks equality. Uses JS comparer by default.
Returns undefined | readonly [K, V]
Entry, or undefined if value not found.