Implement a function intersection(...arrays) that computes the intersection of arrays, returning a new array containing unique values present in all given arrays.

The function should:

• Accept two or more arrays.
• Return only the values that appear in all arrays.
• Ensure the returned array contains only unique values.
• Return an empty array if there is no intersection.

Examples

intersection([1, 2, 3], [2, 3, 4]);        // [2, 3]
intersection([1, 2, 3], [2, 3, 4], [3]);   // [3]
intersection([1, 2], [3, 4]);              // []
intersection([], [1, 2, 3]);               // []
intersection([1, 2, 2, 3], [2, 2, 3, 4]);  // [2, 3]