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mapForMaybe

Return the result of transformer with using input as an argument for it if input is not null and undefined. Otherwise, return null or undefined inputted as input.

U must not be Maybe<*>.
- If you'd like return Maybe<*> as U, use andThen().
- If the result of transformer is null or undefined, this throw an Error.

function mapForMaybe<T, U>(input: Maybe<T>, transformer: TransformFn<T, NotNullOrUndefined<U>>): Maybe<U>;

mapForMaybe<T, U>(input: Maybe<T>, transformer: TransformFn<T, NotNullOrUndefined<U>>): Maybe<U>

§Type Parameters

T

U

§Parameters

input: Maybe<T>

transformer: TransformFn<T, NotNullOrUndefined<U>>

§Return Type