Fail when using same command and alias

tj · Aug 8, 2017 · e636703 · e636703
1 parent 5c74431
commit e636703
Show file tree

Hide file tree

Showing 2 changed files with 17 additions and 0 deletions.
diff --git a/index.js b/index.js
@@ -880,7 +880,10 @@ Command.prototype.alias = function(alias) {
 
   if (arguments.length === 0) return command._alias;
 
+  if (alias === command._name) throw new Error('Command alias can\'t be the same as its name');
+
   command._alias = alias;
+
   return this;
 };
 

diff --git a/test/test.command.failOnSameAlias.js b/test/test.command.failOnSameAlias.js
@@ -0,0 +1,14 @@
+var program = require('../')
+  , should = require('should');
+
+var error;
+
+try {
+  program
+    .command('fail')
+    .alias('fail');
+} catch (e) {
+  error = e;
+}
+
+error.should.deepEqual(new Error('Command alias can\'t be the same as its name'));