.eslintrc.json

{
    "env": {
        "browser": true,
        "es6": true,
        "node": true
    },
    "parser": "@typescript-eslint/parser",
    "parserOptions": {
        "sourceType": "module"
    },
    "plugins": [
        "@typescript-eslint"
    ],
    "extends": [
        "eslint:recommended",
        "plugin:@typescript-eslint/recommended"
    ],
    "rules": {
        "@typescript-eslint/indent": [
            "off",  // not flexible enough
            2
        ],
        "@typescript-eslint/ban-types": "off",  // TODO we may want this
        "@typescript-eslint/explicit-module-boundary-types": [
            "error",
            {
                "allowArgumentsExplicitlyTypedAsAny": true
            }
        ],
        "@typescript-eslint/no-empty-function": "off",
        "@typescript-eslint/no-empty-interface": "off",
        "@typescript-eslint/no-explicit-any": "off",
        "@typescript-eslint/no-inferrable-types": "off",
        "@typescript-eslint/no-invalid-this": "error",
        "@typescript-eslint/no-non-null-assertion": "off",
        "@typescript-eslint/no-this-alias": "off",
        "@typescript-eslint/no-unused-expressions": "warn",
        "@typescript-eslint/no-unused-vars": "off",  // covered adequately by syntax highlighting
        "@typescript-eslint/no-var-requires": "off",
        "@typescript-eslint/no-redeclare": "warn",
        "@typescript-eslint/no-shadow": "warn",
        "@typescript-eslint/quotes": [
            "warn",
            "single",
            {
                "allowTemplateLiterals": true
            }
        ],
        "@typescript-eslint/semi": [
            "warn",
            "always"
        ],
        "@typescript-eslint/space-before-function-paren": [
            "warn",
            {
                "anonymous": "always",
                "named": "never",
                "asyncArrow": "always"
            }
        ],
        "@typescript-eslint/space-infix-ops": "warn",
        "comma-dangle": "warn",
        "curly": "warn",
        "eol-last": "warn",
        "eqeqeq": [
            "warn",
            "smart"
        ],
        "guard-for-in": "warn",
        "id-denylist": [
            "warn",
            "any",
            "number",
            "string",
            "boolean"
        ],
        "id-match": "warn",
        "no-bitwise": "warn",
        "no-caller": "warn",
        "no-constructor-return": "warn",
        "no-debugger": "warn",
        "no-empty": "off",
        "no-eval": "warn",
        "no-fallthrough": "warn",
        "no-new-wrappers": "warn",
        "no-trailing-spaces": "warn",
        "no-unused-labels": "warn",
        "prefer-const": "warn"
    }
}