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-rw-r--r--packages/utils/src/abi_encoder/data_type.ts2
1 files changed, 1 insertions, 1 deletions
diff --git a/packages/utils/src/abi_encoder/data_type.ts b/packages/utils/src/abi_encoder/data_type.ts
index 3b4028abd..f5a8087ea 100644
--- a/packages/utils/src/abi_encoder/data_type.ts
+++ b/packages/utils/src/abi_encoder/data_type.ts
@@ -6,7 +6,7 @@ import ethUtil = require('ethereumjs-util');
var _ = require('lodash');
export interface DataTypeFactory {
- create: (dataItem: DataItem, parentDataType: DataType) => DataType;
+ create: (dataItem: DataItem, parentDataType?: DataType) => DataType;
mapDataItemToDataType: (dataItem: DataItem) => DataType;
}