Add tap function

composer.json

@@ -24,7 +24,8 @@
     "autoload": {
         "psr-4": {
             "FormatTalksBundle\\": "src/FormatTalksBundle"
-        }
+        },
+        "files": ["src/helpers.php"]
     },
     "extra": {
         "merge-plugin": {

src/helpers.php

@@ -0,0 +1,7 @@
+<?php
+
+function tap($value, $callback) {
+    $callback($value);
+
+    return $value;
+}