LSP: narrow complete suggestions after a pipe

[gusinacio]

I don't know how functional languages LSPs usually handle this case but it would be nice if suggestions after a pipe are functions that contain the type as the first parameter. i.e:

"hello" |> // <- This would only suggest functions that have String as the first parameter type

If there are multiple pipes, the suggestions should be related to the last output value.

"2" |> int.parse |>  // <- This would only suggest functions that have Result as the first parameter type

[lpil]

Good suggestion, thank you!