1 files changed, 24 insertions, 6 deletions
diff --git a/packages/connect/src/utils/type_converters.ts b/packages/connect/src/utils/type_converters.ts
index 210d452b9..4b211a0b2 100644
--- a/packages/connect/src/utils/type_converters.ts
+++ b/packages/connect/src/utils/type_converters.ts
@@ -1,29 +1,47 @@
 import { BigNumber } from '@0xproject/utils';
 import * as _ from 'lodash';
 
+import { APIOrder } from '../types';
+
 export const typeConverters = {
     convertOrderbookStringFieldsToBigNumber(orderbook: any): any {
         const bids = _.get(orderbook, 'bids', []);
         const asks = _.get(orderbook, 'asks', []);
+        const convertedBids = {
+            ...bids,
+            records: bids.records.map((order: any) => typeConverters.convertAPIOrderStringFieldsToBigNumber(order)),
+        };
+        const convertedAsks = {
+            ...asks,
+            records: asks.records.map((order: any) => typeConverters.convertAPIOrderStringFieldsToBigNumber(order)),
+        };
         return {
-            bids: bids.map((order: any) => typeConverters.convertOrderStringFieldsToBigNumber(order)),
-            asks: asks.map((order: any) => typeConverters.convertOrderStringFieldsToBigNumber(order)),
+            bids: convertedBids,
+            asks: convertedAsks,
         };
     },
+    convertAPIOrderStringFieldsToBigNumber(apiOrder: any): APIOrder {
+        return { ...apiOrder, order: typeConverters.convertOrderStringFieldsToBigNumber(apiOrder.order) };
+    },
     convertOrderStringFieldsToBigNumber(order: any): any {
         return typeConverters.convertStringsFieldsToBigNumbers(order, [
-            'makerTokenAmount',
-            'takerTokenAmount',
+            'makerAssetAmount',
+            'takerAssetAmount',
             'makerFee',
             'takerFee',
-            'expirationUnixTimestampSec',
+            'expirationTimeSeconds',
             'salt',
         ]);
     },
     convertStringsFieldsToBigNumbers(obj: any, fields: string[]): any {
         const result = _.assign({}, obj);
         _.each(fields, field => {
-            _.update(result, field, (value: string) => new BigNumber(value));
+            _.update(result, field, (value: string) => {
+                if (_.isUndefined(value)) {
+                    throw new Error(`Could not find field '${field}' while converting string fields to BigNumber.`);
+                }
+                return new BigNumber(value);
+            });
         });
         return result;
     },