diff --git a/.eslintrc.js b/.eslintrc.js
index 88db4d2..b83c0e0 100644
--- a/.eslintrc.js
+++ b/.eslintrc.js
@@ -9,6 +9,12 @@ module.exports = {
     'no-plusplus': 0,
     'no-underscore-dangle': 0,
     'no-use-before-define': 0,
+    '@typescript-eslint/no-unused-vars': ['error', {
+      vars: 'all',
+      args: 'after-used',
+      ignoreRestSiblings: true,
+      argsIgnorePattern: '^_'
+    }],
   },
   env: {
     browser: true,
diff --git a/package.json b/package.json
index 6765b91..6d4384a 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "idle-tracker",
-  "version": "0.1.1",
+  "version": "0.1.2",
   "description": "Tiny pure Javascript library to track browser inactivity",
   "author": "Roderick Hsiao <roderickhsiao@gmail.com>",
   "repository": {