Merge pull request #13 from mvdwg/to-tag-required

Show error when target version is not passed to the command
mvdwg · Jul 15, 2017 · 0f8a532 · 0f8a532
2 parents da364c6 + d2f985d
commit 0f8a532
Showing 1 changed file with 9 additions and 0 deletions.
diff --git a/lib/commands/update.js b/lib/commands/update.js
@@ -16,6 +16,15 @@ module.exports = Command.extend({
     var path = require('path');
     var toTag = rawArgs.shift();
 
+    if (!toTag) {
+      this.ui.writeError('Usage: ember update <ember-cli version>');
+      return;
+    }
+
+    if (!/^v/.test(toTag)) {
+      toTag = 'v' + toTag;
+    }
+
     var packageJSON = require(path.join(this.project.root, 'package.json'));
     var fromTag = cleanupVersion(packageJSON.devDependencies['ember-cli']);
     var isAddon = this.project.isEmberCLIAddon();