From 5c3d58aa822c630974d7a3580206fd4df68e0c93 Mon Sep 17 00:00:00 2001
From: Sam Thorogood <samthor@users.noreply.github.com>
Date: Tue, 5 Dec 2017 11:32:55 +1100
Subject: [PATCH] change PolymerElement extern to var

---
 externs/polymer-externs.js | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/externs/polymer-externs.js b/externs/polymer-externs.js
index ceef420468..2ebdb20ef8 100644
--- a/externs/polymer-externs.js
+++ b/externs/polymer-externs.js
@@ -96,9 +96,10 @@ PolymerTelemetry.dumpRegistrations;;
 /** @type {PolymerTelemetry} */
 Polymer.telemetry;
 
+// nb. This is explicitly 'var', as Closure Compiler checks that this is the case.
 /**
  * @constructor
  * @extends {HTMLElement}
  * @implements {Polymer_LegacyElementMixin}
  */
-let PolymerElement = Polymer.LegacyElementMixin();
+var PolymerElement = Polymer.LegacyElementMixin();