Install eslint and prettier

services/filestore/package.json

@@ -46,8 +46,22 @@
     "underscore": "~1.5.2"
   },
   "devDependencies": {
+    "babel-eslint": "^10.0.3",
     "bunyan": "^1.3.5",
     "chai": "4.2.0",
+    "eslint": "^6.7.2",
+    "eslint-config-prettier": "^6.7.0",
+    "eslint-config-standard": "^14.1.0",
+    "eslint-plugin-chai-expect": "^2.1.0",
+    "eslint-plugin-chai-friendly": "^0.5.0",
+    "eslint-plugin-import": "^2.19.1",
+    "eslint-plugin-mocha": "^6.2.2",
+    "eslint-plugin-node": "^10.0.0",
+    "eslint-plugin-prettier": "^3.1.2",
+    "eslint-plugin-promise": "^4.2.1",
+    "eslint-plugin-standard": "^4.0.1",
+    "prettier-eslint": "^9.0.1",
+    "prettier-eslint-cli": "^5.0.0",
     "sandboxed-module": "2.0.3",
     "sinon": "7.1.1"
   }