Type 'unknown' is not an array type or a string type code example
Example: typescript convert an unknown to string
// To convert an unknown type into any other type we can use assertions
let demo: unknown = 'Rice Krispies';
// The above line would throw an error as an unknown variable can
// only take values of unknown and any type
let demo: unknown = 'The EXTRA cripsy colonel...' as string;
// the as string assertion allows us to set an unknown type to a string type
// This can be done with any other variable types it is not
// limited to string