.eslintrc-node

{
  "extends": ["airbnb", "prettier"],
  "parser": "babel-eslint",
  "parserOptions": {
    "ecmaVersion": 8,
    "ecmaFeatures": {
      "experimentalObjectRestSpread": true,
      "impliedStrict": true,
      "classes": true
    }
  },
  "env": {
    "node": true,
    "mocha": true,
  },
  "rules": {
    "no-debugger": 0,
    "no-unused-vars": [
      1,
      {
        "argsIgnorePattern": "res|next|^err|^_"
      }
    ],
    "arrow-body-style": [2, "as-needed"],
    "no-unused-expressions": [
      2,
      {
        "allowTaggedTemplates": true
      }
    ],
    "no-param-reassign": [
      2,
      {
        "props": false
      }
    ],
    "no-console": 0,
    "import/prefer-default-export": 0,
    "import": 0,
    "func-names": 0,
    "space-before-function-paren": 0,
    "comma-dangle": 0,
    "max-len": 0,
    "import/extensions": 0,
    "no-underscore-dangle": 0,
    "consistent-return": 0,
    "radix": 0,
    "no-shadow": [
      2,
      {
        "hoist": "all",
        "allow": ["resolve", "reject", "done", "next", "err", "error"]
      }
    ],
    "quotes": [
      2,
      "single",
      {
        "avoidEscape": true,
        "allowTemplateLiterals": true
      }
    ],
    "prettier/prettier": [
      "error",
      {
        "trailingComma": "es5",
        "singleQuote": true,
        "printWidth": 80,
        "tabWidth": 2
      }
    ]
  },
  "plugins": ["prettier"]
}

.eslintrc-react

{
  "extends": ["airbnb", "prettier", "prettier/react"],
  "parser": "babel-eslint",
  "parserOptions": {
    "ecmaVersion": 8,
    "ecmaFeatures": {
      "experimentalObjectRestSpread": true,
      "impliedStrict": true,
      "classes": true
    }
  },
  "env": {
    "browser": true,
    "node": true,
    "jquery": true,
    "jest": true,
    "mocha": true
  },
  "rules": {
    "no-debugger": 0,
    "no-unused-vars": [
      1,
      {
        "argsIgnorePattern": "res|next|^err|^_"
      }
    ],
    "arrow-body-style": [2, "as-needed"],
    "no-unused-expressions": [
      2,
      {
        "allowTaggedTemplates": true
      }
    ],
    "no-param-reassign": [
      2,
      {
        "props": false
      }
    ],
    "no-console": 0,
    "import/prefer-default-export": 0,
    "import": 0,
    "func-names": 0,
    "space-before-function-paren": 0,
    "comma-dangle": 0,
    "max-len": 0,
    "import/extensions": 0,
    "no-underscore-dangle": 0,
    "consistent-return": 0,
    "react/display-name": 1,
    "react/react-in-jsx-scope": 0,
    "react/prefer-stateless-function": 0,
    "react/forbid-prop-types": 0,
    "react/no-unescaped-entities": 0,
    "jsx-a11y/accessible-emoji": 0,
    "react/jsx-filename-extension": [
      1,
      {
        "extensions": [".js", ".jsx"]
      }
    ],
    "radix": 0,
    "no-shadow": [
      2,
      {
        "hoist": "all",
        "allow": ["resolve", "reject", "done", "next", "err", "error"]
      }
    ],
    "quotes": [
      2,
      "single",
      {
        "avoidEscape": true,
        "allowTemplateLiterals": true
      }
    ],
    "prettier/prettier": [
      "error",
      {
        "trailingComma": "es5",
        "singleQuote": true,
        "printWidth": 80,
        "tabWidth": 2
      }
    ],
    "jsx-a11y/href-no-hash": "off",
    "jsx-a11y/anchor-is-valid": [
      "warn",
      {
        "aspects": ["invalidHref"]
      }
    ]
  },
  "plugins": ["prettier"]
}