fix: promise getFeatures

Author: sjhoeksma

docs/configure.md

@@ -164,7 +164,7 @@ Behaviors control the look & feel of the map. Changing them will always regenera
 |notify|`message`:string, `duration`:number| Show notify `message` at bottom of map. Duration defaults too 2000ms|
 |showPopup|`coordinates`:array,`message`:string|Show a popup at the Coordinates with message
 |setFeatures|`layer`:string, `data`:object/string, `clear`:boolean, [returns `boolean`]|Add one ore more GEOJson features to the given layer, when clear is true all features of layer will be deleted before adding. When `merge` is true merge will done base on feature type and location. |
-|getFeatures|`layer`:string [returns `object`]|Get all features returning a `GEOJson` for the given layer|
+|getFeatures|`layer`:string [returns `promise`]|Get all features returning a `GEOJson` for the given layer|
 |clearFeatures|`layer`:string|Clear all features for the given layer|
 |setConfig|`json`:object,`filter`:string/array |Set configuration of the plugin by json, filter by properties. When filter is empty array[] all items will be update, when null only layers is update or the specified in filter|
 |getConfig|`filter`:string/array [returns `object`]|Get configuration of the plugin by returning `json`, filter by properties. When filter is empty array[] all items will be returned, when null only layers is update, or the specified in filter|

src/GEOComp.tsx

@@ -514,8 +514,8 @@ GEOComp = withMethodExposing(GEOComp, [
     },
     execute: async (comp: any, params: any) => {
       var map = comp.exposingValues.events['map:init']
-      if (map) return await getFeatures(map, params[0])
-      return null
+      if (map) return getFeatures(map, params[0])
+      return Promise.reject()
     }
   },
   {

src/vendors/helpers/Layers.js

@@ -356,7 +356,7 @@ export async function getFeatures(map, name) {
       featureProjection: map.getView().getProjection() || 'EPSG:3857'
     }).writeFeaturesObject(source.getFeatures())
   }
-  return null
+  return Promise.reject()
 }