Index: .gitignore
===================================================================
--- .gitignore	(revision 3b2f41e274aee4c7b7b1791007ac898293aacf1d)
+++ .gitignore	(revision 848439f8d6e456a0269c3145cc6faa97e77d4637)
@@ -79,2 +79,5 @@
 doc/user/pointer2.tex
 doc/user/EHMHierarchy.tex
+
+# generated by npm
+package-lock.json