From 7a616cc49f9015a5deb5159f1f361f82d2363de8 Mon Sep 17 00:00:00 2001
From: Bryan Housel <bryan@mapbox.com>
Date: Fri, 6 Oct 2017 00:31:28 -0400
Subject: [PATCH] Switch to EsriWorldImagery background layer for the
 tutorial..

---
 modules/ui/intro/intro.js | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/modules/ui/intro/intro.js b/modules/ui/intro/intro.js
index 7bc72bdff..678625d7a 100644
--- a/modules/ui/intro/intro.js
+++ b/modules/ui/intro/intro.js
@@ -83,8 +83,16 @@ export function uiIntro(context) {
         context.history().reset();
         context.history().merge(_values(coreGraph().load(introGraph).entities));
         context.history().checkpoint('initial');
-        context.background().bing();
-        overlays.forEach(function (d) { context.background().toggleOverlayLayer(d); });
+
+        var esri = context.background().findSource('EsriWorldImagery');
+        if (esri) {
+            context.background().baseLayerSource(esri);
+        } else {
+            context.background().bing();
+        }
+        overlays.forEach(function (d) {
+            context.background().toggleOverlayLayer(d);
+        });
 
         // Mock geocoder
         services.geocoder.countryCode = function(location, callback) {