.eslintrc.json

{
  "env": {
      "es6": true,
      "node": true,
      "browser": true
  },
  "extends": ["eslint:recommended", "plugin:react/recommended"],
  "installedESLint": true,
  "parserOptions": {
      "ecmaVersion": 6,
      "ecmaFeatures": {
          "experimentalObjectRestSpread": true,
          "jsx": true
      },
      "sourceType": "module"
  },
  "plugins": [
      "react"
  ],
  "globals": {

  },
  "rules": {
      "indent": [
          0,
          "tab"
      ],
      "linebreak-style": [
          "error",
          "unix"
      ],
      "quotes": [
          "error",
          "single"
      ],
      "semi": [
          0,
          "never"
      ],
      "curly": 2,
      "dot-notation": 0,
      "comma-style": [
        2,
        "last"
      ],
      "no-unused-expressions": 2,
      "no-unused-vars": [
        "error",
        {
          "vars": "all",
          "args": "after-used",
          "varsIgnorePattern": "config|MRError"
        }
      ],
      "no-trailing-spaces": "error",
      "brace-style": "error",
      "keyword-spacing": ["error", { "after": true, "before": true }],
      "comma-dangle": ["error", "never"],
      "no-console": ["error", {"allow": ["warn", "error", "origin"]}],
      "no-debugger": "error",
      "no-unreachable": "error",
      "no-dupe-args": "error",
      "no-dupe-keys": "error",
      "no-func-assign": "error",
      "no-sparse-arrays": "error",
      "space-before-blocks": "error"
  }
}