From 826e08149b3373f3048e4c55a432a489afc97bf7 Mon Sep 17 00:00:00 2001
From: Bryan Housel <bryan@mapbox.com>
Date: Thu, 8 Nov 2018 13:53:13 -0500
Subject: [PATCH] Setup data layers before starting the walkthrough (closes
 #5136)

---
 modules/ui/intro/intro.js | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/modules/ui/intro/intro.js b/modules/ui/intro/intro.js
index 3dcf67537..39ed10db2 100644
--- a/modules/ui/intro/intro.js
+++ b/modules/ui/intro/intro.js
@@ -84,16 +84,23 @@ export function uiIntro(context) {
         context.history().merge(_values(coreGraph().load(introGraph).entities));
         context.history().checkpoint('initial');
 
+        // Setup imagery
         var imagery = context.background().findSource(INTRO_IMAGERY);
         if (imagery) {
             context.background().baseLayerSource(imagery);
         } else {
             context.background().bing();
         }
-        overlays.forEach(function (d) {
+        overlays.forEach(function(d) {
             context.background().toggleOverlayLayer(d);
         });
 
+        // Setup data layers (only OSM)
+        var layers = context.layers();
+        layers.all().forEach(function(item) {
+            item.layer.enabled(item.id === 'osm');
+        });
+
         // Mock geocoder
         services.geocoder.countryCode = function(location, callback) {
             callback(null, t('intro.graph.countrycode'));
@@ -150,7 +157,7 @@ export function uiIntro(context) {
             if (osm) { osm.toggle(true).reset().caches(caches); }
             context.history().reset().merge(_values(baseEntities));
             context.background().baseLayerSource(background);
-            overlays.forEach(function (d) { context.background().toggleOverlayLayer(d); });
+            overlays.forEach(function(d) { context.background().toggleOverlayLayer(d); });
             if (history) { context.history().fromJSON(history, false); }
             context.map().centerZoom(center, zoom);
             window.location.replace(hash);