Add helper functions for npm extensions

1 files changed, 24 insertions, 0 deletions

diff --git a/baserockimport/exts/importer_base.js b/baserockimport/exts/importer_base.js
new file mode 100644
index 0000000..d7c84a3
--- /dev/null
+++ b/baserockimport/exts/importer_base.js
@@ -0,0 +1,24 @@
+// Copyright (C) 2014  Codethink Limited
+//
+// This program is free software; you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation; version 2 of the License.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License along
+// with this program; if not, write to the Free Software Foundation, Inc.,
+// 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+
+// Helper functions for Node.js / npm importer.
+
+exports.getFirstItem = function(info) {
+  if (Object.keys(info).length != 1)
+    throw(
+      util.format("Expected info object containing one item, got %j", info))
+  return info[Object.keys(info)[0]];
+}
+