.eslintrc

{
    "root": true,
    "extends": "@ljharb",
    "env": {
        "browser": true,
        "node": true,
    },
    "parserOptions": {
        "ecmaVersion": 5,
        "allowReserved": false,
    },
    "rules": {
        "array-bracket-spacing": "off",
        "complexity": "off",
        "func-style": "warn",
        "indent": ["error", 4],
        "no-magic-numbers": "off",
        "max-lines": "warn",
        "max-lines-per-function": "warn",
        "max-statements-per-line": [2, { "max": 2 }],
        "max-statements": "warn",
        "multiline-comment-style": "off",
        "no-negated-condition": "off",
        "no-underscore-dangle": "warn",
        "no-use-before-define": "warn",
        "object-curly-newline": "off",
        "sort-keys": "warn",
    },
    "ignorePatterns": ["syntax-error.*"],
    "overrides": [
        {
            "files": ["*.mjs", "test/import/package_type/*.js"],
            "extends": "@ljharb/eslint-config/esm",
        },
        {
            "files": ["bin/**"],
            "rules": {
                "global-require": "off",
                "no-process-exit": "off",
                "quote-props": ["error", "as-needed", {
                    "keywords": false,
                }],
            },
        },
        {
            "files": ["bin/import-or-require.js"],
            "parserOptions": {
                "ecmaVersion": 2020,
            },
        },
        {
            "files": ["index.js"],
            "rules": {
                "no-param-reassign": "warn",
            },
        },
        {
            "files": ["lib/results.js"],
            "rules": {
                "no-cond-assign": "warn",
                "no-param-reassign": "warn",
                "no-plusplus": "warn",
            },
        },
        {
            "files": ["lib/test.js"],
            "rules": {
                "eqeqeq": "warn",
                "func-name-matching": "off",
                "max-params": "off",
                "no-continue": "off",
                "no-invalid-this": "off",
                "no-multi-assign": "off",
                "no-param-reassign": "warn",
                "no-plusplus": "warn",
                "no-restricted-syntax": "off",
                "operator-linebreak": ["error", "before"],
            },
        },
        {
            "files": ["test/async-await/*"],
            "parserOptions": {
                "ecmaVersion": 2017,
            },
        },
        {
            "files": ["example/**", "test/**"],
            "globals": {
                "g": false,
            },
            "rules": {
                "no-new-func": "off",
            },
        },
        {
            "files": ["example/**"],
            "rules": {
                "array-bracket-newline": "off",
                "global-require": "off",
                "no-console": "off",
            },
        },
        {
            "files": ["test/**"],
            "rules": {
                "dot-notation": [2, {
                    "allowKeywords": true,
                    "allowPattern": "throws"
                }],
                "id-length": "off",
                "max-len": "off",
                "max-lines-per-function": "off",
                "no-plusplus": "off",
                "no-throw-literal": "off",
            },
        },
        {
            "files": ["test/*/**"],
            "rules": {
                "camelcase": "off",
            },
        },
    ],
}