diff --git a/package.json b/package.json
index 988711f..a13ae09 100644
--- a/package.json
+++ b/package.json
@@ -7,7 +7,8 @@
     "src"
   ],
   "scripts": {
-    "lint": "eslint src test",
+    "lint": "eslint src test --ext .ts",
+    "pretest": "npm run lint -- --fix",
     "test": "egg-bin test",
     "ci": "egg-bin cov",
     "contributors": "git-contributor",