.eslintrc.json

{
  "globals": {
    "Promise": true,
    "jest": true,
    "expect": true,
    "sinon": true
  },
  "env": {
    "browser": true,
    "commonjs": true,
    "es6": true,
    "node": true,
    "jest": true
  },
  "parser": "babel-eslint",
  "parserOptions": {
    "ecmaVersion": 7,
    "sourceType": "module",
    "ecmaFeatures": {
      "experimentalObjectRestSpread": true,
      "jsx": true
    }
  },
  "extends": [
    "eslint:recommended"
  ],
  "plugins": [
    "react"
  ],
  "rules": {
    "semi": [
      0,
      "never"
    ],
    "sort-vars": 2,
    "comma-dangle": [
      2,
      "never"
    ],
    "no-console": 0,
    "quotes": [
      2,
      "single",
      {
        "avoidEscape": true
      }
    ],
    "no-unused-vars": [
      1,
      {
        "args": "none",
        "ignoreRestSiblings": true,
        "varsIgnorePattern": "^_"
      }
    ],
    "react/jsx-equals-spacing": [
      "warn",
      "never"
    ],
    "react/jsx-no-duplicate-props": [
      "warn",
      {
        "ignoreCase": true
      }
    ],
    "react/jsx-no-undef": "error",
    "react/jsx-pascal-case": [
      "warn",
      {
        "allowAllCaps": true,
        "ignore": []
      }
    ],
    "react/jsx-uses-react": "warn",
    "react/jsx-uses-vars": "warn",
    "react/no-danger-with-children": "warn",
    "react/no-deprecated": "warn",
    "react/no-direct-mutation-state": "warn",
    "react/no-is-mounted": "warn",
    "react/react-in-jsx-scope": "error",
    "react/require-render-return": "warn",
    "react/style-prop-object": "warn"
  }
}