orThrow

orThrow(target)

Returns the target value if it's not null or undefined, otherwise throws an error. This function is useful for asserting that a value is not null or undefined.

data-first

orThrow(5); // 5
orThrow("hello"); // "hello"
orThrow(null); // throws FnError
orThrow(undefined); // throws FnError

data-last

pipe(5, orThrow()); // 5
pipe(null, orThrow()); // throws FnError