Issue with BasemapGallery and source autocast

Hi, with the lastest API version 4.5.0, i have a issue with the autocast for the source parameter of the BasemaGallery component and TypeScript.

Here a sample :

let basemapGallery = new BasemapGallery({
     container: this.container.nativeElement,
     view: this.mapView
   });
const BasemapCollection = Collection.ofType(Basemap);
let collection: Collection<Basemap> = new BasemapCollection();
// fill the collection with some basemaps
basemapGallery.source = collection;

It works but I have this TS error message :

TS2322: Type ‘Collection<Basemap>’ is not assignable to type ‘LocalBasemapsSource | PortalBasemapsSource’. Type ‘Collection<Basemap>’ is not assignable to type ‘PortalBasemapsSource’. Property ‘basemaps’ is missing in type ‘Collection<Basemap>’.

In the documentation, it’s indicate that we can set this property with an array or Collection of Basemaps https://developers.arcgis.com/javascript/latest/api-reference/esri-widgets-BasemapGallery.html#source

Is there any feedback about the autocast and TypeScript ?

[ekenes]

@jkieboom it was unintentional. We’ll fix it.

[dasa]

these are not documented as actual classes

Fixed in 4.6