Type guard to ensure the parameter passed it of type Array; uses Array.isArray to check if the passed arg is an Array; does not validate if the array is actually readonly.
Type Parameters
T
Parameters
arg: unknown
Type to check
Returns arg is readonly T[]
True if the type is an readonly array other wise false
Type guard to ensure the parameter passed it of type Array; uses Array.isArray to check if the passed arg is an Array; does not validate if the array is actually readonly.