.eslintrc.json

{
    "extends": "airbnb-base",
    "env": {
      "browser": "true",
      "node": "true",
      "jest": "true",
      "mocha": "true"
    },
    "rules": {
      "arrow-body-style": 1,
      "arrow-parens": 0,
      "class-methods-use-this": 0,
      "function-paren-newline": 0,
      "import/no-extraneous-dependencies": 0,
      "linebreak-style": 0,
      "max-len": ["warn", { "code": 120 }],
      "no-plusplus": 0,
      "no-param-reassign": 1,
      "no-restricted-syntax": 0,
      "no-use-before-define": 0,
      "no-underscore-dangle": 0,
      "object-curly-newline": 0,
      "prefer-template": 1,
      "semi": ["error", "never"],
      "import/prefer-default-export": 0,
      "import/no-named-as-default": 0,
      "implicit-arrow-linebreak": 0,
      "no-loop-func": 0,
      "no-continue": 0,
      "no-console": ["error", { "allow": ["info", "warn", "error"] }],
      "no-else-return": ["error", { "allowElseIf": true }],
      "comma-dangle": ["error", {
          "arrays": "always-multiline",
          "objects": "always-multiline",
          "imports": "always-multiline",
          "exports": "always-multiline",
          "functions": "ignore"
      }]
    }
}