Create an instance of Maybe.Just.
null and undefined are allowed by the type signature so that the
function may throw on those rather than constructing a type like
Maybe<undefined>.
Optional value: null | TThe value to wrap in a Maybe.Just.
Optional An instance of Maybe.Just<T>.
T The type of the item contained in the Maybe.
If you pass null or undefined.
Create an instance of Maybe.Nothing.
If you want to create an instance with a specific type, e.g. for use in a
function which expects a Maybe<T> where the <T> is known but you have no
value to give it, you can use a type parameter:
const notString = Maybe.nothing<string>();
Optional _: nullOptional An instance of Maybe.Nothing<T>.
T The type of the item contained in the Maybe.
Create a Maybe from any value.
To specify that the result should be interpreted as a specific type, you may
invoke Maybe.of with an explicit type parameter:
const foo = Maybe.of<string>(null);
This is usually only important in two cases:
Nothing from a known null or
undefined value which is untyped.The value to wrap in a Maybe. If it is undefined or null,
the result will be Nothing; otherwise it will be the type of
the value passed.
T The type of the item contained in the Maybe.
Generated using TypeDoc
The public interface for the
Maybeclass as a value: a constructor and the associated static properties.