eslint.config.mjs

import typescriptEslint from "@typescript-eslint/eslint-plugin";
import _import from "eslint-plugin-import";
import { fixupPluginRules } from "@eslint/compat";
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 [...compat.extends("prettier"), {
  plugins: {
    "@typescript-eslint": typescriptEslint,
    import: fixupPluginRules(_import),
  },

  files: ['**/*.ts', '**/*.js'],

  linterOptions: {
    reportUnusedDisableDirectives: "off",
  },

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

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

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

  settings: {
    "import/extensions": [".js", ".ts"],

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

    "import/resolver": {
      node: {
        extensions: [".js", ".ts"],
      },
    },
  },

  rules: {
    "linebreak-style": ["error", "unix"],
    "import/prefer-default-export": "off",
    "class-methods-use-this": "off",
    "no-unused-expressions": "off",
    "no-underscore-dangle": "off",

    "import/extensions": ["off", "ignorePackages", {
      js: "never",
      ts: "never",
    }],
  },
}];