Add new underscore-privates rule to @0xproject/tslint-config and fix lint errors

1 files changed, 6 insertions, 6 deletions

diff --git a/packages/contracts/util/balances.ts b/packages/contracts/util/balances.ts
index 7f5e843a5..5800a2008 100644
--- a/packages/contracts/util/balances.ts
+++ b/packages/contracts/util/balances.ts
@@ -7,16 +7,16 @@ import {BalancesByOwner, ContractInstance} from './types';
 bigNumberConfigs.configure();
 
 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])) {