reorganized code

lib/utils.js

@@ -4,3 +4,11 @@
  */
 export const sleep = (ms = 350) =>
   new Promise((resolve) => setTimeout(resolve, ms));
+
+/**
+ * Truncates an array to the specified size.
+ * @param {any[]} arr The array to be truncated.
+ * @param {number} size The size to which the array will be truncated.
+ * @returns {any[]}
+ */
+export const truncateArray = (arr, size) => arr.slice(0, size);