From d3b1ac046aaf2a46f6c3efbd93c55adb0cb8f16d Mon Sep 17 00:00:00 2001
From: Richard Moore <github@ricmoo.com>
Date: Tue, 8 Dec 2020 01:37:44 -0500
Subject: [PATCH] Fixed EIP-712 getPayload dropping EIP712Domain from types for
 JSON-RPC calls (#687).

---
 packages/hash/src.ts/typed-data.ts | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/packages/hash/src.ts/typed-data.ts b/packages/hash/src.ts/typed-data.ts
index c1bc339b6..561264795 100644
--- a/packages/hash/src.ts/typed-data.ts
+++ b/packages/hash/src.ts/typed-data.ts
@@ -463,6 +463,8 @@ export class TypedDataEncoder {
 
         const typesWithDomain = shallowCopy(types);
         if (typesWithDomain.EIP712Domain) {
+            logger.throwArgumentError("types must not contain EIP712Domain type", "types.EIP712Domain", types);
+        } else {
             typesWithDomain.EIP712Domain = domainTypes;
         }