Fix: eslint errors and add linter scripts

.eslintrc

@@ -1,5 +1,5 @@
 {
-  "parser": "babel-eslint",
+  "parser": "@babel/eslint-parser",
   "extends": "eslint:recommended",
   "env": {
     "commonjs": true,
@@ -8,6 +8,7 @@
     "browser": false
   },
   "parserOptions": {
+    "requireConfigFile": false,
     "ecmaFeatures": {
       "experimentalObjectRestSpread": true,
       "jsx": false
@@ -21,7 +22,7 @@
     "indent": ["error", 2, { "SwitchCase": 1 }],
     "linebreak-style": ["error", "unix"],
     "no-console": 0,
-    "quotes": ["error", "single"],
+    "quotes": ["error", "double"],
     "semi": ["error", "always"]
   }
 }

config/admin.js

@@ -1,8 +1,8 @@
 module.exports = ({ env }) => ({
   auth: {
-    secret: env('ADMIN_JWT_SECRET'),
+    secret: env("ADMIN_JWT_SECRET"),
   },
   apiToken: {
-    salt: env('API_TOKEN_SALT'),
+    salt: env("API_TOKEN_SALT"),
   },
 });