refactor(config): remove WriteToFile, add WriteTo

config/config.go

@@ -2,9 +2,9 @@
 package config
 
 import (
-	"bufio"
 	"errors"
 	"fmt"
+	"io"
 	"os"
 	"path/filepath"
 
@@ -104,28 +104,8 @@ func LookupAndParse() (*lint.Config, error) {
 	return conf, nil
 }
 
-// WriteToFile util func to write config object to given file
-func WriteToFile(outFilePath string, conf *lint.Config) (retErr error) {
-	outFilePath = filepath.Clean(outFilePath)
-	f, err := os.Create(outFilePath)
-	if err != nil {
-		return err
-	}
-	defer func() {
-		err := f.Close()
-		if retErr == nil && err != nil {
-			retErr = err
-		}
-	}()
-
-	w := bufio.NewWriter(f)
-	defer func() {
-		err := w.Flush()
-		if retErr == nil && err != nil {
-			retErr = err
-		}
-	}()
-
+// WriteTo writes config in yaml format to given io.Writer
+func WriteTo(w io.Writer, conf *lint.Config) (retErr error) {
 	enc := yaml.NewEncoder(w)
 	defer func() {
 		err := enc.Close()

internal/cmd/config.go

@@ -1,23 +1,45 @@
 package cmd
 
 import (
+	"bufio"
 	"os"
 	"path/filepath"
 
 	"github.com/conventionalcommit/commitlint/config"
 )
 
 // configCreate is the callback function for create config command
-func configCreate(fileName string, isReplace bool) error {
-	defConf := config.Default()
+func configCreate(fileName string, isReplace bool) (retErr error) {
 	outPath := filepath.Join(".", fileName)
 	// if config file already exists skip creating or overwriting it
 	if _, err := os.Stat(outPath); !os.IsNotExist(err) {
 		if !isReplace {
 			return errConfigExist
 		}
 	}
-	return config.WriteToFile(outPath, defConf)
+
+	outFilePath := filepath.Clean(outPath)
+	f, err := os.Create(outFilePath)
+	if err != nil {
+		return err
+	}
+	defer func() {
+		err := f.Close()
+		if retErr == nil && err != nil {
+			retErr = err
+		}
+	}()
+
+	w := bufio.NewWriter(f)
+	defer func() {
+		err := w.Flush()
+		if retErr == nil && err != nil {
+			retErr = err
+		}
+	}()
+
+	defConf := config.Default()
+	return config.WriteTo(w, defConf)
 }
 
 // configCheck is the callback function for check/verify command