What editor is everyone using for Swift?

Last time I played with Swift I stopped after XCode crashed 2 times in an hour for me. It is also very slow. But none other editors seem to support auto completion which is a deal-breaker for me. Without it it's hard to consume all the APIs.

I hope Apple can follow Rust's path by making a language server[0] for Swift, if Apple is serious about providing cross-platform support for it. This will enable better support in editors such as find definition, refactor and auto completion.

[0]: https://internals.rust-lang.org/t/introducing-rust-language-...