refactor: change commify function

Author: kemuru

web/src/utils/commify.ts

@@ -1,7 +1,16 @@
 export const commify = (value: number | bigint | string): string => {
   const [integerPart, decimalPart] = value.toString().split(".");
 
-  const formattedIntegerPart = integerPart.replace(/\d(?=(\d{3})+$)/g, "$&,");
+  let formattedIntegerPart = "";
+  let counter = 0;
+
+  for (let i = integerPart.length - 1; i >= 0; i--) {
+    counter++;
+    formattedIntegerPart = integerPart[i] + formattedIntegerPart;
+    if (counter % 3 === 0 && i !== 0) {
+      formattedIntegerPart = "," + formattedIntegerPart;
+    }
+  }
 
   return decimalPart ? `${formattedIntegerPart}.${decimalPart}` : formattedIntegerPart;
 };