From b3c01f675097cd3123d2d9130354eed1413b040f Mon Sep 17 00:00:00 2001
From: Leonid Logvinov <logvinov.leon@gmail.com>
Date: Thu, 23 Nov 2017 09:46:21 -0600
Subject: Revert "Remove redundant async"

This reverts commit 8d11ababd62d947e338757f57c41179510b11338.
---
 packages/0x.js/src/contract.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/packages/0x.js/src/contract.ts b/packages/0x.js/src/contract.ts
index ebc4c5597..e9c49c9f1 100644
--- a/packages/0x.js/src/contract.ts
+++ b/packages/0x.js/src/contract.ts
@@ -48,7 +48,7 @@ export class Contract implements Web3.ContractInstance {
         });
     }
     private promisifyWithDefaultParams(fn: (...args: any[]) => void): (...args: any[]) => Promise<any> {
-        const promisifiedWithDefaultParams = (...args: any[]) => {
+        const promisifiedWithDefaultParams = async (...args: any[]) => {
             const promise = new Promise((resolve, reject) => {
                 const lastArg = args[args.length - 1];
                 let txData: Partial<Web3.TxData> = {};
-- 
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