From cfa017b6959a79910fe6bcd2c41a8cec8ec5eeda Mon Sep 17 00:00:00 2001
From: Kubudak90 <kubudak@outlook.com>
Date: Sat, 4 Apr 2026 22:54:32 +0300
Subject: [PATCH] fix: enable batching in mass-payout.js by deferring
 transfer.wait()

The original implementation called await transfer.wait() inside the loop,
which blocked each transfer from being batched. This fix:

1. Collects all transfers in an array first
2. Waits for all transfers to complete after queueing

This enables proper batching and significantly improves performance
when processing multiple payouts.

Fixes #416
---
 quickstart-template/mass-payout.js | 19 +++++++++++++++----
 1 file changed, 15 insertions(+), 4 deletions(-)

diff --git a/quickstart-template/mass-payout.js b/quickstart-template/mass-payout.js
index 7131b0ab..54e1510e 100644
--- a/quickstart-template/mass-payout.js
+++ b/quickstart-template/mass-payout.js
@@ -59,12 +59,14 @@ async function sendMassPayout(sendingWallet) {
   // Define amount to send.
   const transferAmount = 0.000002;
   const assetId = Coinbase.assets.Eth;
+  const transfers = [];
 
   try {
     const parser = fs
       .createReadStream("./wallet-array.csv")
       .pipe(parse({ delimiter: ",", from_line: 1 }));
 
+    // STEP 1: Queue all transfers (sequentially to enable batching)
     for await (const row of parser) {
       const address = row[0];
       if (address) {
@@ -76,14 +78,23 @@ async function sendMassPayout(sendingWallet) {
             destination: address,
           });
 
-          await transfer.wait();
-
-          console.log(`Transfer to ${address} successful`);
+          transfers.push({ address, transfer });
+          console.log(`Queued transfer to ${address}`);
         } catch (error) {
-          console.error(`Error transferring to ${address}: `, error);
+          console.error(`Error creating transfer to ${address}: `, error);
         }
       }
     }
+
+    // STEP 2: Wait for all transfers to complete
+    for (const { address, transfer } of transfers) {
+      try {
+        await transfer.wait();
+        console.log(`Transfer to ${address} successful`);
+      } catch (error) {
+        console.error(`Error waiting for transfer to ${address}: `, error);
+      }
+    }
   } catch (error) {
     console.error(`Error processing CSV file: `, error);
   }