feat: Add allow-no-changes flag

Returns exit code 0 if no changes are found

Author: cliedeman

cmd/semantic-release/main.go

@@ -128,7 +128,12 @@ func cliHandler(c *cli.Context) error {
 	logger.Println("calculating new version...")
 	newVer := semrel.GetNewVersion(conf, commits, release)
 	if newVer == nil {
-		exitIfError(errors.New("no change"), 65)
+		if conf.AllowNoChanges {
+			logger.Println("no change")
+			os.Exit(0)
+		} else {
+			exitIfError(errors.New("no change"), 65)
+		}
 	}
 	logger.Println("new version: " + newVer.String())
 

pkg/config/config.go

@@ -25,6 +25,7 @@ type (
 		BetaRelease                     *BetaRelease
 		Match                           string
 		AllowInitialDevelopmentVersions bool
+		AllowNoChanges                  bool
 		GitLab                          bool
 		GitLabBaseURL                   string
 		GitLabProjectID                 string
@@ -51,6 +52,7 @@ func NewConfig(c *cli.Context) (*Config, error) {
 		TravisCom:                       c.Bool("travis-com"),
 		Match:                           c.String("match"),
 		AllowInitialDevelopmentVersions: c.Bool("allow-initial-development-versions"),
+		AllowNoChanges:                  c.Bool("allow-no-changes"),
 		GitLab:                          c.Bool("gitlab"),
 		GitLabBaseURL:                   c.String("gitlab-base-url"),
 		GitLabProjectID:                 c.String("gitlab-project-id"),

pkg/config/flags.go

@@ -78,4 +78,9 @@ var CliFlags = []cli.Flag{
 		Name:  "allow-initial-development-versions",
 		Usage: "semantic-release will start your initial development release at 0.1.0",
 	},
+	&cli.BoolFlag{
+		Name:  "allow-no-changes",
+		Value: false,
+		Usage: "Exit with code 0 if no changes are found, useful if semantic-release is automatically run",
+	},
 }