pack.js

diff --git a/pack.js b/pack.js
index ae2eb59..5adbe5c 100755 (executable)
--- a/pack.js
+++ b/pack.js
@@ -33,7 +33,9 @@ args.shift(); //seed
 args.shift(); // pack.js
 var files = [];
 var outfn = '';
-print(args.length);
+if (!args.length) {
+    throw "no files selected";
+}
 for(var i =0; i < args.length;i++) {
     if (args[i] == '-o') {
         outfn = args[i+1];