nest.object()

nest.object(array)

Applies the nest operator to the specified array, returning a nested object. Each entry in the returned associative array corresponds to a distinct key value returned by the first key function. The entry value depends on the number of registered key functions: if there is an additional key, the value is another associative array; otherwise, the value is the array of elements filtered from the input array that have the given key value.

Note: this method is unsafe if any of the keys conflict with built-in JavaScript properties, such as __proto__. If you cannot guarantee that the keys will be safe, you should use nest.map instead.