1 files changed, 7 insertions, 5 deletions
diff --git a/baserockimport/exts/npm.to_lorry b/baserockimport/exts/npm.to_lorry
index ba0f442..65d8712 100755
--- a/baserockimport/exts/npm.to_lorry
+++ b/baserockimport/exts/npm.to_lorry
@@ -20,11 +20,13 @@ npm = require("npm");
 base = require("./importer_base");
 
 npm.load(function(er, npm) {
-  if (process.argv.length === 3)
-    packageName = process.argv[2];
-  else
-    throw ("Error! Too many command line arguments! Usage: " +
-           "./npm.to_lorry PACKAGENAME");
+
+  if (! (process.argv.length == 3 || process.argv.length == 4)) {
+    throw ("Usage: ./npm.to_lorry PACKAGENAME [VERSION]");
+  }
+
+  packageName = process.argv[2];
+
   if (er) throw er;
 
   npm.commands.view([packageName], "silent", getRepo);