diff --git a/.eslintrc b/.eslintrc
new file mode 100644
index 0000000..d009afd
--- /dev/null
+++ b/.eslintrc
@@ -0,0 +1,16 @@
+{
+  "root": true,
+  "extends": [
+    "typescript",
+    "prettier",
+    "plugin:optimize-regex/recommended",
+    "plugin:sonarjs/recommended"
+  ],
+  "plugins": [
+    "eslint-plugin-optimize-regex",
+    "sonarjs"
+  ],
+  "rules": {
+    "sonarjs/cognitive-complexity": ["warn", 20]
+  }
+}
\ No newline at end of file
diff --git a/.eslintrc.yml b/.eslintrc.yml
deleted file mode 100644
index 4ebd163..0000000
--- a/.eslintrc.yml
+++ /dev/null
@@ -1,11 +0,0 @@
-root: true
-
-extends:
-  - typescript
-  - prettier
-  - plugin:optimize-regex/recommended
-  - plugin:sonarjs/recommended
-
-plugins:
-  - eslint-plugin-optimize-regex
-  - sonarjs