From ac942faa258f604f4f6171759f6bcdf786317d29 Mon Sep 17 00:00:00 2001
From: fragosti <francesco.agosti93@gmail.com>
Date: Fri, 16 Nov 2018 16:14:10 -0800
Subject: chore: use lodash where relevant

---
 packages/instant/src/index.umd.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/packages/instant/src/index.umd.ts b/packages/instant/src/index.umd.ts
index 518326e21..34d893ad7 100644
--- a/packages/instant/src/index.umd.ts
+++ b/packages/instant/src/index.umd.ts
@@ -54,7 +54,7 @@ export const render = (config: ZeroExInstantConfig, selector: string = DEFAULT_Z
         injectedDiv.setAttribute('class', INJECTED_DIV_CLASS);
         appendTo.appendChild(injectedDiv);
         const closeInstant = () => {
-            if (config.onClose) {
+            if (!_.isUndefined(config.onClose)) {
                 config.onClose();
             }
             appendTo.removeChild(injectedDiv);
-- 
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