Method zoom

modules/core/MapSystem.js:672–678

* zoom * Set/Get the map zoom * @param z2? Number to set the zoom to * @param duration? Duration of the transition in milliseconds, defaults to 0ms (asap) * @return map zoom -or- this

(z2, duration)

   * @return map zoom -or- this
   */
  zoom(z2, duration) {
    if (z2 === undefined) {
      return this.context.viewport.transform.zoom;
    } else {
      return this.setMapParams(undefined, z2, undefined, duration ?? 0);
    }
  }


  /**