eslint.config.mjs

import { fixupConfigRules, fixupPluginRules } from "@eslint/compat";
import typescriptEslint from "@typescript-eslint/eslint-plugin";
import prettier from "eslint-plugin-prettier";
import _import from "eslint-plugin-import";
import globals from "globals";
import tsParser from "@typescript-eslint/parser";
import path from "node:path";
import { fileURLToPath } from "node:url";
import js from "@eslint/js";
import { FlatCompat } from "@eslint/eslintrc";

const __filename = fileURLToPath(import.meta.url);
const __dirname = path.dirname(__filename);
const compat = new FlatCompat({
    baseDirectory: __dirname,
    recommendedConfig: js.configs.recommended,
    allConfig: js.configs.all
});

export default [{
    ignores: ["**/node_modules", "eslint.config.*"],
}, ...fixupConfigRules(compat.extends(
    "eslint:recommended",
    "plugin:@typescript-eslint/recommended",
    "prettier",
    "plugin:import/recommended",
    "plugin:import/typescript",
)), {
    plugins: {
        "@typescript-eslint": fixupPluginRules(typescriptEslint),
        prettier,
        import: fixupPluginRules(_import),
    },

    languageOptions: {
        globals: {
            ...globals.node,
        },

        parser: tsParser,
        ecmaVersion: 13,
        sourceType: "module",

        parserOptions: {
            project: "tsconfig.json",
        },
    },

    settings: {
        "import/parsers": {
            "@typescript-eslint/parser": [".ts", ".tsx"],
        },

        "import/resolver": {
            typescript: {
                alwaysTryTypes: true,
            },
        },
    },

    rules: {
        "prettier/prettier": "error",

        "@typescript-eslint/strict-boolean-expressions": ["error", {
            allowNullableBoolean: true,
            allowAny: true,
        }],

        "import/no-unresolved": "error",
        "import/order": "warn",
        "import/no-namespace": "error",
        "import/no-named-as-default-member": "off",
        "import/default": "off",
        "@typescript-eslint/no-non-null-assertion": "off",
    },
}];