eslint.config.mjs

import typescriptEslintEslintPlugin from "@typescript-eslint/eslint-plugin";
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: ["**/.eslintrc.js"],
  },
  ...compat.extends("plugin:@typescript-eslint/recommended"),
  {
    plugins: {
      "@typescript-eslint": typescriptEslintEslintPlugin,
    },

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

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

    rules: {
      "@typescript-eslint/no-implied-eval": "error",
      "@typescript-eslint/no-for-in-array": "error",
      "@typescript-eslint/no-floating-promises": "error",
      "@typescript-eslint/no-invalid-void-type": "error",
      "@typescript-eslint/no-meaningless-void-operator": "error",
      "@typescript-eslint/no-misused-new": "error",
      "@typescript-eslint/no-misused-promises": "error",
      "@typescript-eslint/explicit-function-return-type": "error",
      "@typescript-eslint/explicit-module-boundary-types": "error",
      "@typescript-eslint/no-explicit-any": "error",
      "@typescript-eslint/no-unused-vars": [
        "error",
        {
        "vars": "all",
        "args": "after-used",
        "argsIgnorePattern": "^_",
        "varsIgnorePattern": "^_"
        }
      ],
      "@typescript-eslint/naming-convention": [
        "error",
        { selector: "typeLike", format: ["PascalCase"], filter: { regex: "^(__String|[A-Za-z]+_[A-Za-z]+)$", match: false } },
        { selector: "interface", format: ["PascalCase"], custom: { regex: "^I[A-Z]", match: false }, filter: { regex: "^I(Arguments|TextWriter|O([A-Z][a-z]+[A-Za-z]*)?)$", match: false } },
        { selector: "variable", format: ["camelCase", "PascalCase", "UPPER_CASE"], leadingUnderscore: "allow", filter: { regex: "^(_{1,2}filename|_{1,2}dirname|_+|[A-Za-z]+_[A-Za-z]+)$", match: false } },
        { selector: "function", format: ["camelCase", "PascalCase"], leadingUnderscore: "allow", filter: { regex: "^[A-Za-z]+_[A-Za-z]+$", match: false } },
        { selector: "parameter", format: ["camelCase"], leadingUnderscore: "allow", filter: { regex: "^(_+|[A-Za-z]+_[A-Z][a-z]+)$", match: false } },
        { selector: "method", format: ["camelCase", "PascalCase"], leadingUnderscore: "allow", filter: { regex: "^([0-9]+|[A-Za-z]+_[A-Za-z]+)$", match: false } },
        { selector: "enumMember", format: ["camelCase", "PascalCase"], leadingUnderscore: "allow", filter: { regex: "^[A-Za-z]+_[A-Za-z]+$", match: false } },
      ],
    },
  },
];