.eslintrc.json

{
  "root": true,
  "env": {
    "browser": true,
    "jquery": true
  },
  "parser": "babel-eslint",
  "parserOptions": {
    "sourceType": "module",
    "ecmaVersion": 6
  },
  "globals": {},
  "rules": {
    "prefer-template": "error",
    "quotes": ["error", "single"],
    "eol-last": ["error", "always"],
    "indent": 2,
    "no-console": "error",
    "no-extra-semi": "error",
    "no-mixed-spaces-and-tabs": "error",
    "no-redeclare": "error",
    "no-trailing-spaces": "error",
    "no-undef": "error",
    "no-unused-vars": "error",
    "no-useless-escape": "error",
    "space-in-parens": "error",
    "vars-on-top": "error",
    "template-curly-spacing": "error",
    "quote-props": ["error", "as-needed"],
    "keyword-spacing": ["error", { "before": true, "after": true } ],
    "key-spacing": ["error", { "mode": "strict" }]
  }
}