diff --git a/nashorn/.hgignore b/nashorn/.hgignore
new file mode 100644
index 00000000000..83cef213d48
--- /dev/null
+++ b/nashorn/.hgignore
@@ -0,0 +1,4 @@
+^build/
+^dist/
+/nbproject/private/
+^.hgtip
diff --git a/nashorn/.jcheck/conf b/nashorn/.jcheck/conf
new file mode 100644
index 00000000000..6d0dbe48e36
--- /dev/null
+++ b/nashorn/.jcheck/conf
@@ -0,0 +1 @@
+project=jdk8