.eslintrc.json

{
    "env": {
        "browser": true,
        "commonjs": true,
        "es6": true,
        "mocha": true,
        "node": true
    },
    "extends": ["eslint:recommended", "plugin:react/recommended"],
    "parser": "babel-eslint",
    "parserOptions": {
        "ecmaVersion": 6,
        "sourceType": "module",
        "ecmaFeatures": {
            "jsx": true
        }
    },
    "plugins": [
        "react"
    ],
    "rules": {
      "brace-style": [2, "1tbs", {"allowSingleLine": true}],
      "comma-dangle": [2, "never"],
      "import/extensions": 0,
      "import/no-extraneous-dependencies": 0,
      "indent": [2, 2],
      "keyword-spacing": 2,
      "linebreak-style": [2, "unix"],
      "no-trailing-spaces": 2,
      "quotes": [2, "single"],
      "react/prefer-es6-class": 1,
      "semi": [2, "always"],
      "sort-imports": [2, {
        "ignoreCase": true,
        "ignoreMemberSort": false,
        "memberSyntaxSortOrder": ["none", "all", "multiple", "single"]
      }],
      "space-before-function-paren": [2, "never"],
      "space-infix-ops": [2, {"int32Hint": false}],
      "spaced-comment": [2, "always"],
      "strict": [2, "safe"]
    }
}