feat(asset-buyer): update buyQuoteCalculator to match rounding behavior in contracts

1 files changed, 8 insertions, 1 deletions

diff --git a/packages/asset-buyer/src/constants.ts b/packages/asset-buyer/src/constants.ts
index 55effdb23..c912253bd 100644
--- a/packages/asset-buyer/src/constants.ts
+++ b/packages/asset-buyer/src/constants.ts
@@ -1,6 +1,7 @@
+import { SignedOrder } from '@0x/types';
 import { BigNumber } from '@0x/utils';
 
-import { AssetBuyerOpts, BuyQuoteExecutionOpts, BuyQuoteRequestOpts } from './types';
+import { AssetBuyerOpts, BuyQuoteExecutionOpts, BuyQuoteRequestOpts, OrdersAndFillableAmounts } from './types';
 
 const NULL_ADDRESS = '0x0000000000000000000000000000000000000000';
 const MAINNET_NETWORK_ID = 1;
@@ -22,6 +23,11 @@ const DEFAULT_BUY_QUOTE_EXECUTION_OPTS: BuyQuoteExecutionOpts = {
     feeRecipient: NULL_ADDRESS,
 };
 
+const EMPTY_ORDERS_AND_FILLABLE_AMOUNTS: OrdersAndFillableAmounts = {
+    orders: [] as SignedOrder[],
+    remainingFillableMakerAssetAmounts: [] as BigNumber[],
+};
+
 export const constants = {
     ZERO_AMOUNT: new BigNumber(0),
     NULL_ADDRESS,
@@ -31,4 +37,5 @@ export const constants = {
     DEFAULT_BUY_QUOTE_EXECUTION_OPTS,
     DEFAULT_BUY_QUOTE_REQUEST_OPTS,
     MAX_PER_PAGE: 10000,
+    EMPTY_ORDERS_AND_FILLABLE_AMOUNTS,
 };