anchor.diff:          style: 'mapbox://styles/mapbox/streets-v8', //stylesheet location
           center: [-120.79433441162108, 49.49935027965388], // starting position
           zoom: 12 // starting zoom
  +    });
  +
  +    map.on('style.load', function () {
  +        map.addSource('terrain-data', {
  +            type: 'vector',
  +            url: 'mapbox://mapbox.mapbox-terrain-v2'
  +        });
       });
positive.code: 
    link(rel='stylesheet', href='https://api.mapbox.com/mapbox.js/plugins/leaflet-minimap/v1.0.0/Control.MiniMap.css')
  
    //- GeoJson Vector Tils Script
    script(src='https://api.tiles.mapbox.com/mapbox-gl-js/v0.15.0/mapbox-gl.js')
    link(rel='stylesheet', href='https://api.tiles.mapbox.com/mapbox-gl-js/v0.15.0/mapbox-gl.css')
  
  
negative.code:                 'source': 'poly',
                  'layout': {},
                  'paint': {
                  
                      'fill-color': '#088',
                      'fill-opacity': 0.5,
                      'fill-outline-color': '#003333' 
  