From f5bff7b14c52fdd91afe76865ecec955b1f96539 Mon Sep 17 00:00:00 2001
From: Jordan Harband <ljharb@gmail.com>
Date: Thu, 9 Aug 2018 23:17:21 -0700
Subject: [PATCH] [fix] repeat fix from #797 for #717, in another place

---
 src/ExportMap.js | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/ExportMap.js b/src/ExportMap.js
index 1cb5dc3e9..66b212a21 100644
--- a/src/ExportMap.js
+++ b/src/ExportMap.js
@@ -38,7 +38,12 @@ export default class ExportMap {
 
   get size() {
     let size = this.namespace.size + this.reexports.size
-    this.dependencies.forEach(dep => size += dep().size)
+    this.dependencies.forEach(dep => {
+      const d = dep()
+      // CJS / ignored dependencies won't exist (#717)
+      if (d == null) return
+      size += d.size
+    })
     return size
   }