New: Add StdErrorCritical to log errors with critical level

README.md

@@ -18,19 +18,23 @@ This package exports a Logger struct defined like this (you'll find an interface
 ```go
 package simplelogger
 
+type LogExtraData map[string]interface{}
+
 type Logger struct {
 	formatter Formatter
 	writer    Writer
+	MinLevel  LogLevel
 }
 
 type _ interface {
-	log(level LogLevel, message string, data map[string]interface{})
-	Debug(message string, data map[string]interface{})
-	Info(message string, data map[string]interface{})
-	Warn(message string, data map[string]interface{})
-	Error(message string, data map[string]interface{})
-	Critical(message string, data map[string]interface{})
-	StdError(err error, data map[string]interface{})
+	Log(level LogLevel, message string, data LogExtraData)
+	Debug(message string, data LogExtraData)
+	Info(message string, data LogExtraData)
+	Warn(message string, data LogExtraData)
+	Error(message string, data LogExtraData)
+	Critical(message string, data LogExtraData)
+	StdErrorCritical(err error, data LogExtraData)
+	StdError(err error, data LogExtraData)
 }
 ```
 

logger.go

@@ -63,6 +63,11 @@ func (logger Logger) Critical(message string, data LogExtraData) {
 	logger.Log(CRITICAL, message, data)
 }
 
+// StdErrorCritical handles logging of messages with the level Critical with objects of type 'error'.
+func (logger Logger) StdErrorCritical(err error, data LogExtraData) {
+	logger.Log(CRITICAL, err.Error(), data)
+}
+
 // StdError handles logging objects of type 'error'.
 func (logger Logger) StdError(err error, data LogExtraData) {
 	logger.Log(ERROR, err.Error(), data)