fix: call revert data for node clients that have nested error data.

.changeset/lovely-yaks-worry.md

@@ -0,0 +1,5 @@
+---
+"viem": patch
+---
+
+Fixed \`call\` revert data for node clients that have nested error data.

src/actions/public/call.test.ts

@@ -812,5 +812,12 @@ describe('getRevertErrorData', () => {
         }),
       ),
     ).toBe('0x556f1830')
+    expect(
+      getRevertErrorData(
+        new BaseError('error', {
+          cause: new RawContractError({ data: { data: '0x556f1830' } }),
+        }),
+      ),
+    ).toBe('0x556f1830')
   })
 })

src/actions/public/call.ts

@@ -285,5 +285,6 @@ async function scheduleMulticall<TChain extends Chain | undefined>(
 
 export function getRevertErrorData(err: unknown) {
   if (!(err instanceof BaseError)) return undefined
-  return (err.walk() as { data?: Hex })?.data
+  const error = err.walk() as RawContractError
+  return typeof error.data === 'object' ? error.data.data : error.data
 }

src/errors/contract.ts

@@ -231,9 +231,12 @@ export class RawContractError extends BaseError {
   code = 3
   override name = 'RawContractError'
 
-  data?: Hex
+  data?: Hex | { data?: Hex }
 
-  constructor({ data, message }: { data?: Hex; message?: string }) {
+  constructor({
+    data,
+    message,
+  }: { data?: Hex | { data?: Hex }; message?: string }) {
     super(message || '')
     this.data = data
   }

src/utils/errors/getContractError.ts

@@ -46,7 +46,7 @@ export function getContractError(
   ) {
     cause = new ContractFunctionRevertedError({
       abi,
-      data,
+      data: typeof data === 'object' ? data.data : data,
       functionName,
       message: shortMessage ?? message,
     })