diff --git a/lgtm.yml b/lgtm.yml
new file mode 100644
index 0000000000000..2846dcb6b04cb
--- /dev/null
+++ b/lgtm.yml
@@ -0,0 +1,3 @@
+queries:
+  # Already handled by the "no-unused-vars" ESLint rule.
+  - exclude: js/unused-local-variable