From 9154a6a5543a0899054223a4fe5576e6bb626447 Mon Sep 17 00:00:00 2001
From: Bryan Housel <bryan@mapbox.com>
Date: Wed, 29 Jan 2020 15:22:06 -0500
Subject: [PATCH] context.asset should pass-through absolute URLs

---
 modules/core/context.js   | 1 +
 test/spec/core/context.js | 4 ++++
 2 files changed, 5 insertions(+)

diff --git a/modules/core/context.js b/modules/core/context.js
index eeb7d2984..7f3c482b3 100644
--- a/modules/core/context.js
+++ b/modules/core/context.js
@@ -405,6 +405,7 @@ export function coreContext() {
   };
 
   context.asset = (val) => {
+    if (/^http(s)?:\/\//i.test(val)) return val;
     const filename = _assetPath + val;
     return _assetMap[filename] || filename;
   };
diff --git a/test/spec/core/context.js b/test/spec/core/context.js
index 412749f2b..0e55ad0be 100644
--- a/test/spec/core/context.js
+++ b/test/spec/core/context.js
@@ -29,6 +29,10 @@ describe('iD.coreContext', function() {
             context = iD.coreContext().assetPath('iD/').assetMap(assets);
         });
 
+        it('ignores absolute urls', function() {
+            expect(context.asset('HTTP://hello')).to.eql('HTTP://hello');
+            expect(context.asset('https://world')).to.eql('https://world');
+        });
         it('looks first in assetMap', function() {
             expect(context.asset('img/loader.gif')).to.eql('/assets/iD/img/loader-b66184b5c4afbccc25f.gif');
         });