Fix eslint [dev] dependency

Author: speedytwenty

package.json

@@ -18,6 +18,7 @@
   "devDependencies": {
     "ansi-256-colors": "^1.1.0",
     "cli-table": "^0.3.1",
+    "eslint": "^6.0.0",
     "eslint-config-prettier": "^6.0.0",
     "eslint-plugin-prettier": "^3.0.0",
     "jest": "^25.2.4",