1 files changed, 8 insertions, 11 deletions
diff --git a/packages/contracts/util/balances.ts b/packages/contracts/util/balances.ts
index fce15db6d..6a1659ab1 100644
--- a/packages/contracts/util/balances.ts
+++ b/packages/contracts/util/balances.ts
@@ -1,22 +1,19 @@
-import {BigNumber} from 'bignumber.js';
+import { BigNumber } from '@0xproject/utils';
 import * as _ from 'lodash';
 
-import {bigNumberConfigs} from './bignumber_config';
-import {BalancesByOwner, ContractInstance} from './types';
-
-bigNumberConfigs.configure();
+import { BalancesByOwner, ContractInstance } from './types';
 
 export class Balances {
-    private tokenContractInstances: ContractInstance[];
-    private ownerAddresses: string[];
+    private _tokenContractInstances: ContractInstance[];
+    private _ownerAddresses: string[];
     constructor(tokenContractInstances: ContractInstance[], ownerAddresses: string[]) {
-        this.tokenContractInstances = tokenContractInstances;
-        this.ownerAddresses = ownerAddresses;
+        this._tokenContractInstances = tokenContractInstances;
+        this._ownerAddresses = ownerAddresses;
     }
     public async getAsync(): Promise<BalancesByOwner> {
         const balancesByOwner: BalancesByOwner = {};
-        for (const tokenContractInstance of this.tokenContractInstances) {
-            for (const ownerAddress of this.ownerAddresses) {
+        for (const tokenContractInstance of this._tokenContractInstances) {
+            for (const ownerAddress of this._ownerAddresses) {
                 let balance = await tokenContractInstance.balanceOf(ownerAddress);
                 balance = new BigNumber(balance);
                 if (_.isUndefined(balancesByOwner[ownerAddress])) {