1 files changed, 31 insertions, 0 deletions
diff --git a/packages/connect/src/utils/type_converters.ts b/packages/connect/src/utils/type_converters.ts
new file mode 100644
index 000000000..bf17a5629
--- /dev/null
+++ b/packages/connect/src/utils/type_converters.ts
@@ -0,0 +1,31 @@
+import * as _ from 'lodash';
+import {BigNumber} from 'bignumber.js';
+
+// TODO: convert all of these to non-mutating, pure functions
+export const typeConverters = {
+    convertOrderbookStringFieldsToBigNumber(orderbook: object): void {
+        _.each(orderbook, (orders: object[]) => {
+            _.each(orders, (order: object) => this.convertOrderStringFieldsToBigNumber(order));
+        });
+    },
+    convertOrderStringFieldsToBigNumber(order: object): void {
+        this.convertStringsFieldsToBigNumbers(order, [
+            'makerTokenAmount',
+            'takerTokenAmount',
+            'makerFee',
+            'takerFee',
+            'expirationUnixTimestampSec',
+            'salt',
+        ]);
+    },
+    convertBigNumberFieldsToStrings(obj: object, fields: string[]): void {
+        _.each(fields, field => {
+            _.update(obj, field, (value: BigNumber) => value.toString());
+        });
+    },
+    convertStringsFieldsToBigNumbers(obj: object, fields: string[]): void {
+        _.each(fields, field => {
+            _.update(obj, field, (value: string) => new BigNumber(value));
+        });
+    },
+};