Feature requests: convenience helpers and improved spec compliance

Some features that I’d like to contribute from my personal implementation that this one is missing. Opening issue for discussion before just opening a pull request to help eliminate unnecessary work. Some of these are convenience, some of these bring the implementations closer to the Rust spec. Porting these is little effort, as the code already exists in my own personal work.

Convenience helpers

• function fromPromise<V, E extends Error>(promise: Promise<V>): Promise<Result<V, E>>; avoids additional microtasks
• function fromSync<V, E extends Error>(func: () => V): Result<V, E>; synchronous helper, avoids microtasks completely
• Symbol.toStringTag support; useful to quickly and easily distinguish resulting objects
• Symbol.hasInstance support on Err, Ok, Some, None; example myResult instance of Err

Spec compliance

• Iterable support, similar to class Result<T, E extends Error> implements Iterable<T>
• Result.expectErr

[aaronhuggins]

I’ll add as comments in PR.

[OliverBrotchie]

Oh sorry! 😆

Yeah if you could provide some snippets that would be great!