Idea: `Lift`

Hi and thanks for this library!

It would be nice to have a lift function in the library that ensures a value T is a Maybe<T>, without creating a Maybe<Maybe<T>>:

lift<T>(a: T | Maybe<T>): Maybe<T> {
    return Maybe.isInstance( value )
        ? value
        : Maybe.of( value )
}

[chriskrycho]

I’ve chewed on this for a while, and given both @bmakuh’s astute comment and my own reflections on it, I’m going to close it and not implement. That said: I appreciate the thoughtful suggestion, and I hope the library continues to be useful for you!

[chriskrycho]

Following up on this, I realized for the points you both just raised that we definitely wouldn’t want to change the behavior of of. I’m also inclined to say that because this is kind of an edge case, it doesn’t make sense to push handling for it into the library, especially since it’s straightforward to work around or to use andThen/flatMap to resolve the nesting. Mostly because we’re trying to walk a fine line of being idiomatic to use in TypeScript, with the assumption that we have the type checker around to help, and therefore with the most minimal set of runtime checks possible (shoving as much as possible into the type system).