A Suggestion that is provided by rslint, and
can be reported to the user, and can be automatically
applied if it has the right
A diagnostic message that can give information like errors or warnings.
The emitter is responsible for emitting diagnostics to a given output.
Everything that can be added to a diagnostic, like a suggestion that will be displayed under the actual error.
Indicicates how a tool should manage this suggestion.
A severity level for diagnostic messages.