eslint.config.js

import tseslint from "@typescript-eslint/eslint-plugin";
import stylisticTs from "@stylistic/eslint-plugin-ts";
import parser from "@typescript-eslint/parser";
import importX from "eslint-plugin-import-x";

export default [
  {
    name: "eslint-config",
    files: ["src/**/*.{ts,tsx,js,jsx}", "test/**/*.{ts,tsx,js,jsx}"],
    ignores: ["dist/*", "build/*", "coverage/*", "public/*", ".github/*", "node_modules/*", ".vscode/*"],
    languageOptions: {
      parser: parser,
    },
    plugins: {
      "import-x": importX,
      "@stylistic/ts": stylisticTs,
      "@typescript-eslint": tseslint,
    },
    rules: {
      "prefer-const": "error", // Enforces the use of `const` for variables that are never reassigned
      "no-undef": "off", // Disables the rule that disallows the use of undeclared variables (TypeScript handles this)
      "no-extra-semi": ["error"], // Disallows unnecessary semicolons for TypeScript-specific syntax
      "import-x/extensions": ["error", "never", { json: "always" }], // Enforces no extension for imports unless json
    },
  },
  {
    name: "eslint-tests",
    files: ["test/**/**.test.ts"],
    languageOptions: {
      parser: parser,
      parserOptions: {
        project: ["./tsconfig.json"],
      },
    },
    plugins: {
      "@typescript-eslint": tseslint,
    },
    rules: {
      "@typescript-eslint/no-floating-promises": "error", // Require Promise-like statements to be handled appropriately. - https://typescript-eslint.io/rules/no-floating-promises/
      "@typescript-eslint/no-misused-promises": "error", // Disallow Promises in places not designed to handle them. - https://typescript-eslint.io/rules/no-misused-promises/
    },
  },
];