fix: :bug: eslint missing (#6239)

close #6236

package.json

@@ -93,6 +93,7 @@
     "cross-env": "^7.0.0",
     "cross-port-killer": "^1.1.1",
     "enzyme": "^3.11.0",
+    "eslint": "^6.8.0",
     "express": "^4.17.1",
     "gh-pages": "^2.0.1",
     "husky": "^4.0.7",