build: ugrade to ESLint v9 (#122)

Author: pozil

.eslintrc.json

@@ -0,0 +1,19 @@
+const js = require('@eslint/js');
+const globals = require('globals');
+const jest = require('eslint-plugin-jest');
+
+module.exports = [
+    js.configs.recommended,
+    {
+        plugins: {
+            jest
+        },
+        languageOptions: {
+            ecmaVersion: 2020,
+            globals: {
+                ...globals.node,
+                ...globals.jest
+            }
+        }
+    }
+];