update eslint to v9 and required migration steps

Author: bwp91

.eslintrc

@@ -12,6 +12,7 @@ All notable changes to `hap-nodejs` will be documented in this file. This projec
 - Added support for NodeJS 24
 - Update @homebridge/ciao to 1.3.3
 - update `jest` to `v30` and required migration steps
+- update `eslint` to `v9` and required migration steps
 
 ### Homebridge Dependencies
 

CHANGELOG.md

@@ -0,0 +1,54 @@
+import { defineConfig, globalIgnores } from "eslint/config";
+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 defineConfig([globalIgnores(["**/dist/"]), {
+  extends: compat.extends(
+    "eslint:recommended",
+    "plugin:@typescript-eslint/eslint-recommended",
+    "plugin:@typescript-eslint/recommended",
+  ),
+
+  languageOptions: {
+    parser: tsParser,
+    ecmaVersion: 2018,
+    sourceType: "module",
+  },
+
+  rules: {
+    quotes: ["error", "double"],
+    indent: ["error", 2, {
+      SwitchCase: 0,
+    }],
+    "linebreak-style": ["error", "unix"],
+    semi: ["error", "always"],
+    "comma-dangle": ["error", "always-multiline"],
+    "dot-notation": "error",
+    eqeqeq: ["error", "smart"],
+    curly: ["error", "all"],
+    "brace-style": ["error"],
+    "prefer-arrow-callback": "warn",
+    "max-len": ["warn", 160],
+    "object-curly-spacing": ["error", "always"],
+    "@typescript-eslint/no-unused-vars": ["error", {
+      caughtErrors: "none",
+    }],
+    "@typescript-eslint/no-use-before-define": ["error", {
+      classes: false,
+      enums: false,
+    }],
+    "@typescript-eslint/no-non-null-assertion": "off",
+    "@typescript-eslint/explicit-module-boundary-types": "error",
+  },
+}]);