Short name of the check (e.g., "Node.js version", "SQL Server connectivity").
Detailed result message.
Outcome of this diagnostic check.
OptionalSuggestedActionable fix suggestion (present for 'fail' and 'warn' statuses).
Event type discriminator.
Emitted during preflight and
mj doctorfor individual health checks. Frontends render these as a diagnostic report with pass/fail/warn/info indicators.See
Diagnostics — the aggregated result model for all diagnostic checks.