       app_chart:
         options: mangle: false
         files: '<%=folder.app%>extension/chart/<%=pkg.name%>.app.chart.js'      : '<%=folder.build%>app.chart.js'
+      app_leaflet:
+        options: mangle: false
+        files: '<%=folder.app%>extension/leaflet/<%=pkg.name%>.app.leaflet.js'  : '<%=folder.build%>app.leaflet.js'
 
     copy:
       doc_es:

      app_chart:
        options: compress: true
        files: '<%=folder.app%>extension/chart/<%=pkg.name%>.app.chart.css'     : '<%=app.extension.chart.stylus%>'
      # Icons
      icons:
        options: compress: true, import: ['__vendor']

      app_chart_stylus:
        files: ['<%= app.extension.chart.stylus %>']
        tasks: ['stylus:app_chart']
      app_leaflet_stylus:
        files: ['<%= app.extension.leaflet.stylus %>']
        tasks: ['stylus:app_leaflet']
      # Icons
      icons:
        files: ['<%= icons.stylus %>']
