diff --git a/src/internal/typedData/domainSeparator.ts b/src/internal/typedData/domainSeparator.ts
index 78858f4d..97f20a52 100644
--- a/src/internal/typedData/domainSeparator.ts
+++ b/src/internal/typedData/domainSeparator.ts
@@ -21,3 +21,6 @@ export declare namespace domainSeparator {
 
   type ErrorType = hashDomain.ErrorType | GlobalErrorType
 }
+
+domainSeparator.parseError = (error: unknown) =>
+  error as domainSeparator.ErrorType
diff --git a/src/internal/typedData/encodeType.ts b/src/internal/typedData/encodeType.ts
index ef3d3a3b..4931d9a2 100644
--- a/src/internal/typedData/encodeType.ts
+++ b/src/internal/typedData/encodeType.ts
@@ -29,6 +29,8 @@ export declare namespace encodeType {
   type ErrorType = findTypeDependencies.ErrorType | GlobalErrorType
 }
 
+encodeType.parseError = (error: unknown) => error as encodeType.ErrorType
+
 function findTypeDependencies(
   value: {
     primaryType: string
diff --git a/src/internal/typedData/extractEip712DomainTypes.ts b/src/internal/typedData/extractEip712DomainTypes.ts
index 4c86004f..9ce99207 100644
--- a/src/internal/typedData/extractEip712DomainTypes.ts
+++ b/src/internal/typedData/extractEip712DomainTypes.ts
@@ -38,3 +38,6 @@ export function extractEip712DomainTypes(
 export declare namespace extractEip712DomainTypes {
   type ErrorType = GlobalErrorType
 }
+
+extractEip712DomainTypes.parseError = (error: unknown) =>
+  error as extractEip712DomainTypes.ErrorType
diff --git a/src/internal/typedData/hashDomain.ts b/src/internal/typedData/hashDomain.ts
index 0d1121f2..5a726e2b 100644
--- a/src/internal/typedData/hashDomain.ts
+++ b/src/internal/typedData/hashDomain.ts
@@ -20,3 +20,5 @@ export declare namespace hashDomain {
 
   type ErrorType = hashStruct.ErrorType | GlobalErrorType
 }
+
+hashDomain.parseError = (error: unknown) => error as hashDomain.ErrorType
diff --git a/src/internal/typedData/hashStruct.ts b/src/internal/typedData/hashStruct.ts
index 6399a24e..1a4413c4 100644
--- a/src/internal/typedData/hashStruct.ts
+++ b/src/internal/typedData/hashStruct.ts
@@ -29,6 +29,8 @@ export declare namespace hashStruct {
   type ErrorType = encodeData.ErrorType | keccak256.ErrorType | GlobalErrorType
 }
 
+hashStruct.parseError = (error: unknown) => error as hashStruct.ErrorType
+
 function encodeData(value: {
   data: Record<string, unknown>
   primaryType: string
diff --git a/src/internal/typedData/hashTypedData.ts b/src/internal/typedData/hashTypedData.ts
index 87c80fae..06c8dce5 100644
--- a/src/internal/typedData/hashTypedData.ts
+++ b/src/internal/typedData/hashTypedData.ts
@@ -68,3 +68,5 @@ export declare namespace hashTypedData {
     | validateTypedData.ErrorType
     | GlobalErrorType
 }
+
+hashTypedData.parseError = (error: unknown) => error as hashTypedData.ErrorType