Function prefixFieldClashes

pkg/output/text_formatter.go:199–211

This is to not silently overwrite `time`, `msg` and `level` fields when dumping it. If this code wasn't there doing: logrus.WithField("level", 1).Info("hello") Would silently drop the user provided level. Instead with this code it'll logged as: {"level": "info", "fields.level": 1, "msg": "hello

(data log.Fields)

// It's not exported because it's still using Data in an opinionated way. It's to
// avoid code duplication between the two default formatters.
func prefixFieldClashes(data log.Fields) {
	if t, ok := data["time"]; ok {
		data["fields.time"] = t
	}

	if m, ok := data["msg"]; ok {
		data["fields.msg"] = m
	}

	if level, ok := data["level"]; ok {
		data["fields.level"] = level
	}
}