logger

type Config struct {
	Debug bool `env:"DEBUG" envDefault:"false"`

	// Mode is a mode of Logger. Valid options: prod, production, dev, develop.
	// Default value is prod
	Mode string `env:"LOGGER_MODE" envDefault:"prod"`

	// Level is a level of logger. Valid options: debug, info, warn, error, fatal.
	// It is always debug, when debug mode is on
	Level string `env:"LOGGER_LEVEL" envDefault:"info"`
}