1 files changed, 19 insertions, 0 deletions
diff --git a/packages/utils/src/abi_encoder/abstract_data_types/interfaces.ts b/packages/utils/src/abi_encoder/abstract_data_types/interfaces.ts
new file mode 100644
index 000000000..2f2f60871
--- /dev/null
+++ b/packages/utils/src/abi_encoder/abstract_data_types/interfaces.ts
@@ -0,0 +1,19 @@
+import { DataItem } from 'ethereum-types';
+
+import { RawCalldata } from '../calldata/raw_calldata';
+
+import { DataType } from './data_type';
+
+export interface DataTypeFactory {
+    create: (dataItem: DataItem, parentDataType?: DataType) => DataType;
+}
+
+export interface DataTypeStaticInterface {
+    matchType: (type: string) => boolean;
+    encodeValue: (value: any) => Buffer;
+    decodeValue: (rawCalldata: RawCalldata) => any;
+}
+
+export interface MemberIndexByName {
+    [key: string]: number;
+}