Format validation issues as RFC 7807 Problem Details.
Deprecated
RFC 7807 was obsoleted by RFC 9457. Use rfc9457Formatter
instead, or the 'rfc9457' format alias. The emitted body is identical, so
migrating changes nothing on the wire. Will be removed in v1.0.0.
Example
// Before app.register(ValidationPlugin({ errorFormat:'rfc7807' })); // After — byte-identical response app.register(ValidationPlugin({ errorFormat:'rfc9457' }));
Format validation issues as RFC 7807 Problem Details.