From 8151523d33991a6bb99350f92496719231cc6551 Mon Sep 17 00:00:00 2001
From: Leonid Logvinov <logvinov.leon@gmail.com>
Date: Mon, 3 Jul 2017 12:08:07 -0700
Subject: Use _.isString instead of instanceof

---
 src/contract_wrappers/exchange_wrapper.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'src')

diff --git a/src/contract_wrappers/exchange_wrapper.ts b/src/contract_wrappers/exchange_wrapper.ts
index 5d4c21154..106c8774c 100644
--- a/src/contract_wrappers/exchange_wrapper.ts
+++ b/src/contract_wrappers/exchange_wrapper.ts
@@ -601,7 +601,7 @@ export class ExchangeWrapper extends ContractWrapper {
         const bignumberWrappingEventCallback = (err: Error, event: ContractEvent) => {
             if (_.isNull(err)) {
                 const wrapIfBigNumber = (value: ContractEventArg): ContractEventArg => {
-                    return value instanceof String ? value : new BigNumber(value);
+                    return _.isString(value) ? value : new BigNumber(value);
                 };
                 event.args = _.mapValues(event.args, wrapIfBigNumber);
             }
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