fix: don't fail on missing config file (#450)

.github/dependabot.yml

@@ -4,7 +4,6 @@ updates:
   - package-ecosystem: "gomod"
     directory: "/"
     target-branch: "dependencies"
-    open-pull-requests-limit: 10
     schedule:
       interval: "weekly"
       day: "monday"

CHANGELOG.md

@@ -2,6 +2,8 @@
 
 ## master (unreleased)
 
+- fix: don't fail on missing config file ([#450](https://github.com/evilmartians/lefthook/pull/450)) by @mrexox
+
 ## 1.3.6 (2024-03-16)
 
 - fix: stage fixed when root specified ([#449](https://github.com/evilmartians/lefthook/pull/449)) by @mrexox

internal/config/load.go

@@ -23,10 +23,25 @@ const (
 
 var hookKeyRegexp = regexp.MustCompile(`^(?P<hookName>[^.]+)\.(scripts|commands)`)
 
+// NotFoundError wraps viper.ConfigFileNotFoundError for lefthook.
+type NotFoundError struct {
+	message string
+}
+
+// Error returns message of viper.ConfigFileNotFoundError.
+func (err NotFoundError) Error() string {
+	return err.message
+}
+
 // Loads configs from the given directory with extensions.
 func Load(fs afero.Fs, repo *git.Repository) (*Config, error) {
 	global, err := read(fs, repo.RootPath, "lefthook")
 	if err != nil {
+		var notFoundErr viper.ConfigFileNotFoundError
+		if ok := errors.As(err, &notFoundErr); ok {
+			return nil, NotFoundError{err.Error()}
+		}
+
 		return nil, err
 	}
 

internal/lefthook/run.go

@@ -47,6 +47,12 @@ func (l *Lefthook) Run(hookName string, args RunArgs, gitArgs []string) error {
 	// Load config
 	cfg, err := config.Load(l.Fs, l.repo)
 	if err != nil {
+		var notFoundErr config.NotFoundError
+		if ok := errors.As(err, &notFoundErr); ok {
+			log.Warn(err.Error())
+			return nil
+		}
+
 		return err
 	}
 	if err = cfg.Validate(); err != nil {