feat: add packages

Author: technote-space

package.json

@@ -25,6 +25,9 @@
   "devDependencies": {
     "@types/jest": "^24.0.18",
     "@types/node": "^12.7.5",
+    "@typescript-eslint/eslint-plugin": "^2.2.0",
+    "@typescript-eslint/parser": "^2.2.0",
+    "eslint": "^6.4.0",
     "jest": "^24.9.0",
     "jest-circus": "^24.9.0",
     "nock": "^11.3.4",
@@ -36,7 +39,8 @@
   },
   "scripts": {
     "build": "tsc",
-    "test": "jest",
+    "test": "yarn lint && yarn cover",
+    "lint": "eslint src/**/**/*.ts && eslint __tests__/**/**/*.ts",
     "cover": "jest --coverage"
   }
 }