.eslintrc.json

{
    "plugins": [
        "prettier",
        "html",
        "markdown"
    ],
    "env": {
        "browser": true,
        "commonjs": true,
        "es6": true,
        "node": true,
        "jest": true
    },
    "globals": {
        "page": true,
        "browser": true,
        "context": true,
        "jestPuppeteer": true
    },
    "overrides": [{
        "files": ["**/*.md"],
        "rules": {
            "no-undef": "off",
            "no-unused-vars": "off",
            "no-console": "off",
            "padded-blocks": "off"
        }
    }],
    "parserOptions": {
        "ecmaVersion": 2018,
        "ecmaFeatures": {},
        "sourceType": "module",
        "experimentalObjectRestSpread": true
    },
    "rules": {
        "prettier/prettier": ["error", {
            "printWidth": 80,
            "tabWidth": 4,
            "bracketSpacing": false
        }],
        "max-len": ["warn", {
            "code": 80,
            "comments": 80,
            "ignoreTrailingComments": true
        }],
        "@typescript-eslint/camelcase": "off",
        "camelcase": "off",
        "no-const-assign": "error",
        "no-this-before-super": "error",
        "no-undef": "error",
        "no-unreachable": "error",
        "no-unused-vars": "error",
        "constructor-super": "error",
        "valid-typeof": "error"
    }
}