Index: .gitignore
===================================================================
--- .gitignore	(revision 3b2f41e274aee4c7b7b1791007ac898293aacf1d)
+++ .gitignore	(revision 490fb92ee824a236b6dd44604bfed5090c7acc95)
@@ -79,2 +79,5 @@
 doc/user/pointer2.tex
 doc/user/EHMHierarchy.tex
+
+# generated by npm
+package-lock.json