1 files changed, 8 insertions, 0 deletions
diff --git a/toolkit/mozapps/extensions/.eslintrc.js b/toolkit/mozapps/extensions/.eslintrc.js
new file mode 100644
index 0000000000..2b90bd053a
--- /dev/null
+++ b/toolkit/mozapps/extensions/.eslintrc.js
@@ -0,0 +1,8 @@
+"use strict";
+
+module.exports = { // eslint-disable-line no-undef
+  "rules": {
+    // No using undeclared variables
+    "no-undef": "error",
+  }
+};