.eslintrc.js

module.exports = {
    env: {
        browser: true,
        es6: true,
        jest: true,
        node: true
    },
    extends: ["eslint:recommended", "plugin:import/typescript"],
    overrides: [{
        env: {
            browser: true,
            es6: true,
            node: true
        },
        extends: [
            "eslint:recommended",
            "plugin:@typescript-eslint/eslint-recommended",
            "plugin:@typescript-eslint/recommended"
        ],
        files: ["**/*.ts"],
        parser: "@typescript-eslint/parser",
        parserOptions: {
            ecmaVersion: 9,
            sourceType: "module"
        },
        rules: {
            "@typescript-eslint/explicit-function-return-type": 0,
            "@typescript-eslint/no-explicit-any": 0,
            "@typescript-eslint/no-inferrable-types": "off",
            "@typescript-eslint/no-unused-vars": "warn",
            "@typescript-eslint/no-use-before-define": ["warn", {
                classes: false,
                functions: false,
                typedefs: false,
                variables: false
            }],
            "eol-last": "error",
            "no-debugger": "warn",
            "no-use-before-define": "off"
        }
    }],
    parserOptions: {
        ecmaVersion: 9,
        sourceType: "module"
    },
    plugins: ["import"],
    rules: {
        "comma-dangle": ["warn", "never"],
        "eol-last": "error",
        "import/order": ["warn", {
            "alphabetize": {
                caseInsensitive: true,
                order: "asc"
            },
            "groups": ["builtin", "external", "index", "sibling", "parent", "internal"]
        }],
        "max-len": ["warn", {
            "code": 120
        }],
        "no-console": "warn",
        "no-duplicate-imports": "warn",
        "object-curly-spacing": ["warn", "always"],
        "quotes": ["warn", "double"],
        "sort-imports": ["warn", {
            "ignoreCase": false,
            "ignoreDeclarationSort": true,
            "ignoreMemberSort": false
        }],
        "sort-keys": ["warn", "asc", {
            "caseSensitive": true,
            "minKeys": 2,
            "natural": false
        }]
    }
};