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TypeScript missing 'undefined' for view.container property

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03-22-2023 04:59 AM
Christer
New Contributor II

ArcGis version: 

"@arcgis/core": "4.26.5",

 

According to your own post about using ArcGis with React, we should have a useEffect that unsets the views container, which seems like the way to go for freeing up the resources \ WebGL contexts created. 

 

useEffect(() => {
    ... Map initialization

    return () => (view.container = null);
  }, []);

 

Using React with the ArcGIS API for JavaScript (esri.com)

But your Typescript definition says that view.container needs to be a HTMLDivElement

 

  export class DOMContainer {
    /**
     * The `id` or node representing the DOM element containing the view.
     *
     * [Read more...](https://developers.arcgis.com/javascript/latest/api-reference/esri-views-DOMContainer.html#container)
     */
    container: HTMLDivElement;
...

 

 

While you initializer allows more options: 

 

  interface DOMContainerProperties {
    /**
     * The `id` or node representing the DOM element containing the view.
     *
     * [Read more...](https://developers.arcgis.com/javascript/latest/api-reference/esri-views-DOMContainer.html#container)
     */
    container?: HTMLDivElement | string;

 

 

The workaround is to do:

 

useEffect(() => {
    ... Map initialization

    return () => (view.container = null as any);
  }, []);

 

 

But i believe the Typescript definition should be updated, if this is the preferred way to cleanup. 

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