fix: resolves wevm/viem#3836

Author: jxom

.changeset/three-humans-bake.md

@@ -0,0 +1,5 @@
+---
+"ox": patch
+---
+
+Fixed zeroish conversion of `chainId` and `nonce` in `Authorization.fromTuple`.

src/core/Authorization.ts

@@ -271,8 +271,8 @@ export function fromTuple<const tuple extends Tuple>(
     yParity && r && s ? Signature.fromTuple([yParity, r, s]) : undefined
   return from({
     address,
-    chainId: Number(chainId),
-    nonce: BigInt(nonce),
+    chainId: chainId === '0x' ? 0 : Number(chainId),
+    nonce: nonce === '0x' ? 0n : BigInt(nonce),
     ...signature,
   }) as never
 }

src/core/_test/Authorization.test.ts

@@ -214,6 +214,22 @@ describe('fromTuple', () => {
   `)
   })
 
+  test('behavior: zeroish nonce + chainId', () => {
+    const tuple = [
+      '0x',
+      '0x0000000000000000000000000000000000000000',
+      '0x',
+    ] as const satisfies Authorization.Tuple
+    const authorization = Authorization.fromTuple(tuple)
+    expect(authorization).toMatchInlineSnapshot(`
+      {
+        "address": "0x0000000000000000000000000000000000000000",
+        "chainId": 0,
+        "nonce": 0n,
+      }
+    `)
+  })
+
   test('behavior: signature', () => {
     const tuple = [
       '0x1',