.eslintrc.json

{
  "extends": [
    "airbnb",
    "prettier",
    "prettier/react"
  ],
  "parser": "babel-eslint",
  "parserOptions": {
    "ecmaVersion": 2018,
    "ecmaFeatures": {
      "impliedStrict": true,
      "classes": true,
      "jsx": true
    }
  },
  "env": {
    "browser": true,
    "node": true
  },
  "plugins": [
    "prettier"
  ],
  "rules": {
    "arrow-body-style": [
      "error",
      "as-needed"
    ],
    "arrow-parens": [
      "error",
      "as-needed"
    ],
    "comma-dangle": [
      "error",
      {
        "arrays": "only-multiline",
        "exports": "only-multiline",
        "imports": "only-multiline",
        "objects": "only-multiline",
        "functions": "ignore"
      }
    ],
    "func-names": "off",
    "max-len": [
      "error",
      {
        "code": 120
      }
    ],
    "no-console": "off",
    "no-param-reassign": [
      "error",
      {
        "props": false
      }
    ],
    "no-shadow": "off",
    "no-unused-vars": [
      "warn",
      {
        "argsIgnorePattern": "res|next|^err"
      }
    ],
    "prettier/prettier": [
      "error",
      {
        "printWidth": 120,
        "singleQuote": true,
        "semi": false,
        "tabWidth": 2,
        "trailingComma": "es5"
      }
    ],
    "quotes": [
      "error",
      "single",
      {
        "avoidEscape": true,
        "allowTemplateLiterals": true
      }
    ],
    "react/jsx-filename-extension": "off",
    "radix": [
      "error",
      "as-needed"
    ],
    "semi": [
      "error",
      "never"
    ]
  }
}