Module decorate_diag 

Structs

BufferedEarlyLint

Lints that are buffered up early on in the Session before the LintLevels is calculated.

LintBuffer

Enums

DecorateDiagCompat

We can’t implement LintDiagnostic for BuiltinLintDiag, because decorating some of its variants requires types we don’t have yet. So, handle that case separately.