Array groupingThe Object.groupBy() and Map.groupBy() static methods group values of arrays and iterables based on a function that returns a key for each value.mapsMapswidely2024-03-052026-09-05https://tc39.es/ecma262/multipage/abstract-operations.html#sec-groupbyhttps://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Map/groupByjavascript.builtins.Map.groupByjavascript.builtins.Object.groupByhttps://nowyoucanuse.com/features--array-group.html