eslint: Upgrade to 9.x

eslint.config.cjs

@@ -0,0 +1,61 @@
+const react = require("eslint-plugin-react");
+const globals = require("globals");
+const js = require("@eslint/js");
+
+const {
+    FlatCompat,
+} = require("@eslint/eslintrc");
+
+const compat = new FlatCompat({
+    baseDirectory: __dirname,
+    recommendedConfig: js.configs.recommended,
+    allConfig: js.configs.all
+});
+
+module.exports = [{
+    ignores: ["**/.eslintrc.js", "admin/words.js"],
+}, ...compat.extends("eslint:recommended", "plugin:react/recommended"), {
+    plugins: {
+        react,
+    },
+
+    languageOptions: {
+        globals: {
+            ...globals.node,
+            ...globals.mocha,
+        },
+
+        ecmaVersion: 2020,
+        sourceType: "commonjs",
+
+        parserOptions: {
+            ecmaFeatures: {
+                jsx: true,
+            },
+        },
+    },
+
+    settings: {
+        react: {
+            version: "detect",
+        },
+    },
+
+    rules: {
+        indent: ["error", 4, {
+            SwitchCase: 1,
+        }],
+
+        "no-console": "off",
+
+        "no-unused-vars": ["error", {
+            ignoreRestSiblings: true,
+            argsIgnorePattern: "^_",
+        }],
+
+        "no-var": "error",
+        "no-trailing-spaces": "error",
+        "prefer-const": "error",
+        semi: ["error", "always"],
+    },
+}];

main.js

@@ -419,7 +419,7 @@ class Signifylights extends utils.Adapter {
             this.timeoutList = {};
 
             callback();
-        } catch (e) {
+        } catch {
             callback();
         }
     }

package.json

@@ -36,6 +36,8 @@
     "@alcalzone/release-script-plugin-iobroker": "^3.7.2",
     "@alcalzone/release-script-plugin-license": "^3.7.0",
     "@alcalzone/release-script-plugin-manual-review": "^3.5.9",
+    "@eslint/eslintrc": "^3.1.0",
+    "@eslint/js": "^9.14.0",
     "@iobroker/adapter-dev": "^1.2.0",
     "@iobroker/adapter-react": "^2.2.4",
     "@iobroker/testing": "^4.1.3",
@@ -78,7 +80,7 @@
     "test:integration": "mocha test/integration --exit",
     "test": "npm run test:js && npm run test:package",
     "check": "tsc --noEmit -p tsconfig.check.json",
-    "lint": "eslint --ext .js,.jsx .",
+    "lint": "eslint",
     "translate": "translate-adapter",
     "release": "release-script"
   },