diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..bb10c54
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,5 @@
+node_modules/
+
+# Local stub generated by `npm install` in the submodule directory.
+# generalFunctions has no production deps of its own.
+package-lock.json