From e7ed2bdd6ec183801c83b5cd74be48cbbfaf9fbb Mon Sep 17 00:00:00 2001
From: Kevin Ingersoll <kingersoll@gmail.com>
Date: Tue, 3 Oct 2023 15:39:30 +0100
Subject: [PATCH] maybe fix zero base fee

---
 src/actions/public/estimateMaxPriorityFeePerGas.test.ts | 2 +-
 src/actions/public/estimateMaxPriorityFeePerGas.ts      | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/actions/public/estimateMaxPriorityFeePerGas.test.ts b/src/actions/public/estimateMaxPriorityFeePerGas.test.ts
index 90da52130d6..e9f7d84d125 100644
--- a/src/actions/public/estimateMaxPriorityFeePerGas.test.ts
+++ b/src/actions/public/estimateMaxPriorityFeePerGas.test.ts
@@ -154,7 +154,7 @@ test('client: chain `defaultPriorityFee` override', async () => {
     transport: http(),
   })
   expect(await estimateMaxPriorityFeePerGas(client_4)).toBe(0n)
-  
+
   // async zero base fee
   const client_5 = createPublicClient({
     chain: {
diff --git a/src/actions/public/estimateMaxPriorityFeePerGas.ts b/src/actions/public/estimateMaxPriorityFeePerGas.ts
index 553b77f3725..e7f4e90d60c 100644
--- a/src/actions/public/estimateMaxPriorityFeePerGas.ts
+++ b/src/actions/public/estimateMaxPriorityFeePerGas.ts
@@ -88,7 +88,7 @@ export async function internal_estimateMaxPriorityFeePerGas<
       client,
       request,
     } as ChainFeesFnParameters)
-  } else if (chain?.fees?.defaultPriorityFee)
+  } else if (typeof chain?.fees?.defaultPriorityFee !== 'undefined')
     return chain?.fees?.defaultPriorityFee
 
   try {