Tuples ([A, B, ...])

A Tuple is a fixed-length set of items of the given types. Example:

type Point = [number, number]
interface Math extends HybridObject {
  distance(a: Point, b: Point): number
}

Tuples can also have different types per value:

type Good = [number, string, Person]
type Bad = (number | string | Person)[]
interface Test extends HybridObject {
  good(values: Good): void
  bad(values: Bad): void
}

The tuple "Good" in the example above is better and more efficient than "Bad" because it's length is known at compile-time, each parameter is type-safe (Good[0] = number, Bad[0] = number | string | Person), and it doesn't use variants.