gol4ng/logger

Your code does not pass gofmt in 1 place. Go fmt your code!
package formatter
 
import (
    "fmt"
 
    "github.com/gol4ng/logger"
)
 
const (
exported const LineFormatDefault should have comment (or a comment on this block) or be unexported
    LineFormatDefault = "%s %s %s"             // test message warning <my_key:my_value>
    LineFormatLevelInt = "%s %d %s"            // test message 4 <my_key:my_value>
    LineFormatLevelFirst = "%[2]s %[1]s %[3]s" // warning test message <my_key:my_value>
)
 
// Line formatter will transform log Entry into string
type Line struct {
    format string
}
 
// Format will return Entry as string
// typically used for stdout output
func (l *Line) Format(entry logger.Entry) string {
    return fmt.Sprintf(l.format, entry.Message, entry.Level, entry.Context)
}
 
// NewLine will create a new Line with format (fmt)
func NewLine(format string) *Line {
    return &Line{format}
}