Check if tag exists before creating changelog

release-it · May 18, 2016 · c0f3b9e · c0f3b9e
1 parent 4097257
commit c0f3b9e
Showing 1 changed file with 16 additions and 5 deletions.
diff --git a/lib/git.js b/lib/git.js
@@ -16,6 +16,14 @@ function isGitRepo() {
     return run('!git', 'rev-parse --git-dir');
 }
 
+function tagExists(tag) {
+    return run('!git', 'show-ref --tags --quiet --verify -- "refs/tags/' + tag + '"').then(function() {
+        return true;
+    }, function() {
+        return false;
+    });
+}
+
 function getRemoteUrl() {
     return run('!git', 'config --get remote.origin.url').then(function(result) {
         if(result && result.output) {
@@ -173,11 +181,14 @@ function getGithubToken(tokenRef) {
 
 function getChangelog(options) {
     if(options.changelogCommand) {
-        var prevTag = config.process.get('prevVersion') || options.prevVersion,
-            command = options.changelogCommand.replace(/\[REV_RANGE\]/, prevTag + '...HEAD');
-        return run(command).then(function(result) {
-            config.process.set('changelog', result.output);
-            return options;
+        var prevTag = config.process.get('prevVersion') || options.prevVersion;
+        return tagExists(prevTag).then(function(hasTag) {
+            var command = options.changelogCommand.replace(/\[REV_RANGE\]/, hasTag ? prevTag + '...HEAD' : '');
+            return run(command).then(function(result) {
+                process.stdout.write('\n');
+                config.process.set('changelog', result.output);
+                return options;
+            })
         }).catch(function(err) {
             log.warn('Probably the current version in package.json is not a known tag in the repository.');
             throw new Error('Could not create changelog from latest tag (' + prevTag + ') to HEAD.');