new feature

Just as it was done for the Maybe in the PR belllow, add .flat to remove nested functors and .flatMap to help compose functions that return a History.

• #13

new feature

Just as it was done for the Maybe in the PR belllow, add .flat to remove nested functors and .flatMap to help compose functions that return a Lazy.

• #13

new feature

A functor to represent an operation that could be a Success or Failure, like an specialization of the the Either Functor to handle errors.

Something close to:

Interface Result<E extends Error, T> {
  success<R>(fn: (value: T) => R): Result<E, R>
  failure<R extends Error = E, V = R>(fn: (error: E) => Result<R, V>): Result<R, V>
  isSuccess(): boolean
  isFailure(): boolean
  unwrap(): E | T
}