Type Alias IsEmptyArray<T>

Returns true if we can be sure the array is empty, false if we can be sure it's not, and boolean otherwise.

const arr = []
type res = IsEmptyArray<typeof arr> // boolean

const arr = ["A"]
type res = IsEmptyArray<typeof arr> // boolean

const arr = [] as const // or
const arr: [] = []
type res = IsEmptyArray<typeof arr> // true

const arr = ["A"] as const // or
const arr: ["A"] = ["A"]
type res = IsEmptyArray<typeof arr> // false
Copy