Returns an array of duplicated values in the input. This is equivalent to using
util#isDeepStrictEqual to compare every member of the input to all the
other members, but with an optimization to make the runtime complexity O(n)
instead of O(n^2).
Returns
an array containing one instance of every duplicated member of the input,
or an empty array if there are no duplicates
Returns an array of duplicated values in the input. This is equivalent to using util#isDeepStrictEqual to compare every member of the input to all the other members, but with an optimization to make the runtime complexity O(n) instead of O(n^2).
Returns
an array containing one instance of every duplicated member of the input, or an empty array if there are no duplicates