convert .eslintrc.json to current config format

Eslint deprecated the existing config format in 2022 and
expects the new format by default starting with Version 9.0.0

Signed-off-by: Matthias Aßhauer <mha1993@live.de>

Author: rimrul

.eslintrc.json

@@ -0,0 +1,25 @@
+const js = require("@eslint/js")
+const jest = require("eslint-plugin-jest")
+const globals = require("globals")
+
+module.exports = [
+    js.configs.recommended,
+    {
+        plugins: {
+            jest: jest
+        },
+        languageOptions: {
+            ecmaVersion: 12,
+            sourceType: "module",
+            globals: {
+                ...globals.node,
+                ...globals.es6,
+                ...globals.jest
+            }
+        },
+        rules: {
+            indent: ["error", 4],
+            "no-trailing-spaces": "error"
+        }
+    }
+]

eslint.config.js

@@ -5,7 +5,7 @@
     "jest": "^29.7.0"
   },
   "scripts": {
-    "lint": "eslint -c .eslintrc.json '**/*.js'",
+    "lint": "eslint -c eslint.config.js '**/*.js'",
     "test": "jest"
   }
 }