flatMap()
: The flatMap() method iterates through the collection and passes each value to the given callback. The callback is free to modify the item and return it, thus forming a new collection of modified items. Then, the array is flattened by a level:const collection = collect([
{
name: 'Ramana Reddy',
number: 27,
},
{
name: 'Free Time Learn',
number: 11,
},
]);
const flatMapped = collection.flatMap(value => value.name.toUpperCase());
flatMapped.all();
// ['RAMANA REDDY', 'FREE TIME LEARN']