Leaflet 1.x.x vs Openlayers 4.x.x. Часть 1. Исходный код

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3- , «» — Google Closure Compiler ES6. , , , :

Leaflet 1.0.3	144	410 (90 )
Openlayers 4.1.1	511	3.1 (300 )

, losure ompiler 2+ , Leaflet. , « » import ‘../../../../src’ ES6.

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export var CenterOriginTileLayer = TileLayer.extend({
  getTileUrl: function (coords) {
    //            
    //   URL   
  }
});

, (ol.source.XYZ) Openlayers ol.tilegrid.TileGrid, , , origin — . , Openlayers , .

, , , ? , Openlayers Leaflet (+) , — Leaflet. . , .

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