fix(tempo): pass through feePayerSignature in formatTransactionRequest

jxom · jxom · commit 099684399e5d · 2026-04-16T16:06:45.000+10:00
Amp-Thread-ID: https://ampcode.com/threads/T-019d94a3-9684-740e-92b9-5dee12c1ae26
diff --git a/.changeset/fix-fee-payer-signature-passthrough.md b/.changeset/fix-fee-payer-signature-passthrough.md
@@ -0,0 +1,5 @@
+---
+"viem": patch
+---
+
+Fixed `feePayerSignature` being dropped in Tempo's `formatTransactionRequest`.
diff --git a/src/tempo/Formatters.ts b/src/tempo/Formatters.ts
@@ -141,5 +141,9 @@ export function formatTransactionRequest(
               : request.feePayer,
         }
       : {}),
+    ...('feePayerSignature' in request &&
+    request.feePayerSignature !== undefined
+      ? { feePayerSignature: request.feePayerSignature }
+      : {}),
   } as never
 }

-Original file line number
+Diff line change
@@ @@ -0,0 +1,5 @@ @@
 +---
 +"viem": patch
 +---
++
 +Fixed `feePayerSignature` being dropped in Tempo's `formatTransactionRequest`.
Original file line number	Diff line number	Diff line change
`@@ -141,5 +141,9 @@ export function formatTransactionRequest(`
`141`	`141`	`: request.feePayer,`
`142`	`142`	`}`
`143`	`143`	`: {}),`
	`144`	`+ ...('feePayerSignature' in request &&`
	`145`	`+ request.feePayerSignature !== undefined`
	`146`	`+ ? { feePayerSignature: request.feePayerSignature }`
	`147`	`+ : {}),`
`144`	`148`	`} as never`
`145`	`149`	`}`