Function groupByMap

Similar to groupBy but it returns a Map object with the results.

Returns

Returns the aggregated map object.

Example

groupByMap([6.1, 4.2, 6.3], Math.floor)
// Map { 4: [4.2], 6: [6.1, 6.3] }

// The `property` iteratee shorthand.
groupByMap(['one', 'two', 'three'], 'length')
// Map { 3: ['one', 'two'], 5: ['three'] }