.eslintrc.json

{
  "parser": "babel-eslint",
  "parserOptions": {
    "ecmaVersion": 6,
    "sourceType": "module",
    "ecmaFeatures": {
      "experimentalObjectRestSpread": true,
      "jsx": true
    }
  },
  "env": {
    "browser": true,
    "es6": true,
    "jest": true
  },
  "extends": ["eslint:recommended", "plugin:react/recommended"],
  "plugins": ["react"],
  "rules": {
    "arrow-body-style": ["error", "as-needed"],
    "camelcase": "error",
    "comma-dangle": ["error", "only-multiline"],
    "comma-style": ["error", "last"],
    "dot-location": ["error", "property"],
    "eqeqeq": "error",
    "indent": ["error", 2, { "VariableDeclarator": 2, "SwitchCase": 1 }],
    "keyword-spacing": ["error", { "after": true }],
    "no-console": "warn",
    "no-debugger": "error",
    "no-eq-null": "error",
    "no-extra-parens": "error",
    "no-extra-semi": "error",
    "no-iterator": "error",
    "no-lonely-if": "error",
    "no-multi-spaces": "off",
    "no-nested-ternary": "error",
    "no-new-object": "error",
    "no-param-reassign": "error",
    "no-self-compare": "error",
    "no-shadow": "error",
    "no-throw-literal": "error",
    "no-undef": "error",
    "no-underscore-dangle": "off",
    "no-var": "error",
    "no-void": "error",
    "object-shorthand": "error",
    "prefer-rest-params": "error",
    "prefer-template": "error",
    "space-before-function-paren": [
      "error",
      { "anonymous": "always", "named": "never", "asyncArrow": "always" }
    ],
    "space-in-brackets": "never",
    "template-curly-spacing": "error"
  }
}