.eslintrc

{
    "plugins": ["react"],
    "extends": ["eslint:recommended", "plugin:react/recommended"],
    "env": {
        "browser": true,
        "es6": true,
        "node": true
    },
    "parserOptions": {
      "ecmaVersion": 6,
      "sourceType": "module",
      "ecmaFeatures": {
          "jsx": true,
          "impliedStrict": true,
          "sourceType": "module",
          "modules": true,
          "experimentalObjectRestSpread": true
      }
    },
    "rules": {
        "no-console": ["warn", {allow: ["warn","error"]}],
        "no-extra-semi": "error",
        "no-unreachable": "error",
        "array-bracket-spacing": ["error", "never"],
        "object-curly-spacing": ["error", "always"],
        "semi": ["error", "always"],
        "indent": ["error", 2],
        "space-before-function-paren": "error",
        "no-spaced-func": "error",
        "space-unary-ops": [
          "error", {
            "words": true,
            "nonwords": false
          }
        ],
        "comma-spacing": ["error", {
            "before": false,
            "after": true
        }],
        "keyword-spacing": ["error", {
            "before": true,
            "after": true
        }],
        "space-infix-ops": "error",
        "semi-spacing": ["error", {
            "before": false,
            "after": true
        }],
        "key-spacing": ["error", {
            "beforeColon": false,
            "afterColon": true
        }]
    }
}