.eslintrc.json

{
    "env": {
        "browser": true,
        "webextensions": true
    },
    "extends": [
        "plugin:jest/recommended",
        "plugin:promise/recommended",
        "standard",
        "standard-react",
        "prettier",
        "prettier/react",
        "prettier/standard"
    ],
    "plugins": ["prettier", "jest", "standard", "promise", "react"],
    "parser": "babel-eslint",
    "parserOptions": {
        "sourceType": "module",
        "ecmaFeatures": {
            "jsx": true
        }
    },
    "settings": {
        "react": {
            "version": "16.4"
        }
    },
    "rules": {
        "camelcase": "error",
        "comma-dangle": ["error", "always-multiline"],
        "curly": ["error", "all"],
        "quotes": "off",
        "no-var": "error",
        "prefer-const": "error",
        "indent": "off",
        "handle-callback-err": "off",
        "jsx-quotes": "off",
        "operator-linebreak": "off",
        "space-before-function-paren": "off",
        "space-infix-ops": "off",
        "no-console": ["warn", { "allow": ["warn", "error"] }],
        "no-empty": "error",
        "no-multiple-empty-lines": [
            "error",
            {
                "max": 2,
                "maxEOF": 0
            }
        ],
        "no-multi-spaces": [
            "error",
            {
                "ignoreEOLComments": true
            }
        ],
        "no-unused-vars": "error",
        "no-return-await": "error",
        "promise/avoid-new": "off",
        "promise/param-names": "off",
        "promise/always-return": "off",
        "promise/catch-or-return": "off",
        "promise/valid-params": "off",
        "import/no-webpack-loader-syntax": "off",
        "prefer-promise-reject-errors": "off",
        "valid-jsdoc": "off",
        "react/jsx-indent": "off",
        "react/jsx-indent-props": "off",
        "react/jsx-filename-extension": "off",
        "react/prefer-stateless-function": "off",
        "react/sort-comp": "warn",
        "react/jsx-max-props-per-line": [
            1,
            {
                "when": "multiline"
            }
        ],
        "jest/no-disabled-tests": "off"
    },
    "globals": {
        "globalThis": false
    }
}