Add a dependancy warning

1 files changed, 6 insertions, 0 deletions

diff --git a/src/leaflet-soton.js b/src/leaflet-soton.js
index 9fb8998..8d849b9 100644
--- a/src/leaflet-soton.js
+++ b/src/leaflet-soton.js
@@ -916,6 +916,12 @@ SELECT * WHERE {\
         initialize: function (id, options) {
             options = L.setOptions(this, options);
 
+            if (options.busRoutes) {
+                if (!L.Route) {
+                    console.warn("The busRoutes option requires the leaflet-route library");
+                }
+            }
+
             L.Map.prototype.initialize.call(this, id, options);
             var map = this;