Added code for extension coverage
diff --git a/src/node/.istanbul.yml b/src/node/.istanbul.yml
new file mode 100644
index 0000000..9ff1379
--- /dev/null
+++ b/src/node/.istanbul.yml
@@ -0,0 +1,6 @@
+reporting:
+    watermarks:
+        statements: [80, 95]
+        lines: [80, 95]
+        functions: [80, 95]
+        branches: [80, 95]