added eslint9 config, removed eslint8 config

.prettierrc

@@ -0,0 +1,13 @@
+{
+    "printWidth": 2000,
+    "semi": true,
+    "tabWidth": 4,
+    "useTabs": false,
+    "trailingComma": "all",
+    "singleQuote": false,
+    "singleAttributePerLine": true,
+    "endOfLine": "lf",
+    "bracketSpacing": true,
+    "arrowParens": "avoid",
+    "quoteProps": "consistent"
+}

README.md

@@ -26,6 +26,11 @@ You can find the manual of BL-NET here: https://www.ta.co.at/fileadmin/Downloads
 <!--
 Placeholder for next version:  ### **WORK IN PROGRESS**
 -->
+
+### **WORK IN PROGRESS**
+
+-   added eslint9 config
+
 ### 1.0.29 (2024-12-13)
 
 -   added translation and documentation to data object config

eslint.config.mjs

@@ -0,0 +1,31 @@
+// ioBroker eslint template configuration file for js and ts files
+// Please note that esm or react based modules need additional modules loaded.
+import config from "@iobroker/eslint-config";
+
+export default [
+    ...config,
+
+    {
+        // specify files to exclude from linting here
+        ignores: [".dev-server/", ".vscode/", "*.test.js", "test/**/*.js", "*.config.mjs", "build/", "admin/build/", "admin/words.js", "admin/admin.d.ts", "**/adapter-config.d.ts", "node_modules/", "doc/", "package-lock.json", "package.json", "tsconfig.json", "tsconfig.check.json", ".DS_Store", ".create-adapter.json", ".github/", ".gitignore", ".prettierrc", ".releaseconfig.json", "LICENSE", "README.md", "admin/.watch/", "admin/i18n/", "admin/jsonConfig.json", "admin/kbs.png", "admin/ta-blnet.png", "admin/tsconfig.json", "custom-eslint-formatter.js", "io-package.json", "lib/adapter-config.d.ts", "main.test.js", "test/"],
+    },
+    {
+        // you may disable some 'jsdoc' warnings - but using jsdoc is highly recommended
+        // as this improves maintainability. jsdoc warnings will not block build process.
+        rules: {
+            // 'jsdoc/require-jsdoc': 'off',
+            "prettier/prettier": [
+                "error",
+                {
+                    singleQuote: false,
+                    quoteProps: "consistent",
+                },
+            ],
+            "quote-props": ["error", "consistent"],
+            "jsdoc/no-types": "off",
+            "jsdoc/no-defaults": "off",
+            "no-template-curly-in-string": "error",
+            "prefer-template": "off",
+        },
+    },
+];