From fd360ca8181f0812a20fd718fefcfb0ddd4befe7 Mon Sep 17 00:00:00 2001
From: Godfrey Chan <godfreykfc@gmail.com>
Date: Fri, 29 Mar 2019 23:18:21 -0700
Subject: [PATCH] Add missing babel helper

This is needed due to https://github.com/glimmerjs/glimmer-vm/blob/e672233ea70ab2614648bb194efc107f3698baad/packages/%40glimmer/runtime/lib/compiled/opcodes/component.ts

This is probably unintended and a waste of bytes. We should fix it
upstream and remove this helper.
---
 packages/external-helpers/lib/external-helpers.js | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/packages/external-helpers/lib/external-helpers.js b/packages/external-helpers/lib/external-helpers.js
index 55150bfbe12..918f73a475d 100644
--- a/packages/external-helpers/lib/external-helpers.js
+++ b/packages/external-helpers/lib/external-helpers.js
@@ -111,3 +111,9 @@ export function possibleConstructorReturn(self, call) {
   }
   return assertThisInitialized(self);
 }
+
+export function objectDestructuringEmpty(obj) {
+  if (DEBUG && (obj === null || obj === undefined)) {
+    throw new TypeError('Cannot destructure undefined');
+  }
+}