.eslintrc.json

{
  "env": {
    "browser": true,
    "es6": true,
    "webextensions": true,
    "node": true
  },
  "extends": [
    "eslint:recommended",
    "prettier",
    "airbnb-base",
    "plugin:import/recommended"
  ],
  "plugins": [
    "prettier"
  ],
  "parserOptions": {
    "ecmaVersion": 12,
    "sourceType": "module"
  },
  "rules": {
    "prettier/prettier": "error",
    "arrow-body-style": "off",
    "prefer-arrow-callback": "off",
    "import/prefer-default-export": "off",
    "operator-linebreak": [
      "error",
      "after",
      {
        "overrides": {
          ":": "before"
        }
      }
    ],
    "object-curly-newline": [
      "error",
      {
        "ObjectExpression": "always",
        "ObjectPattern": {
          "multiline": true
        },
        "ImportDeclaration": "never",
        "ExportDeclaration": {
          "multiline": true,
          "minProperties": 6
        }
      }
    ],
    "func-names": "off",
    "no-console": "off"
  }
}