add tests and fix wrong behaviour

Author: Tim Streicher

.eslintrc.cjs

@@ -1,3 +1,3 @@
 module.exports = {
-    extends: "@singularit"
+    extends: "@singularit/eslint-config-typescript"
 }

babel.config.js

@@ -0,0 +1,13 @@
+module.exports = {
+  presets: [
+    [
+      '@babel/preset-env',
+      {
+        targets: {
+          node: 'current',
+        },
+      },
+    ],
+    '@babel/preset-typescript',
+  ],
+}