topic Re: typescript error creating MapView from TypeScript in ArcGIS JavaScript Maps SDK Questions

typescript error creating MapView from TypeScript

john_cartwright_noaa — Thu, 03 Jul 2025 01:14:32 GMT

Hello All,

Can someone tell me how to address the following TypeScript error:

const view = new MapView({ container: mapDiv.current, // ERROR: "Type 'WebMap' is not assignable to type 'MapProperties'." map: webmap });

JSAPI version 4.33

Thanks!

Re: typescript error creating MapView from TypeScript

JonathanDawe_BAS — Thu, 03 Jul 2025 12:52:05 GMT

Is your webmap constructed using `new Webmap`? I don't get a typescript error in my application using arcgis 4.33 with equivalent code.

Re: typescript error creating MapView from TypeScript

john_cartwright_noaa — Thu, 03 Jul 2025 14:33:16 GMT

Thanks for your reply. Yes, it looks like this:

const webmap = new WebMap({ portalItem: { id: "43b93cc9be994efbb5a60a2b2d85f151" } }) const view = new MapView({ container: mapDiv.current, // Type 'WebMap' is not assignable to type 'MapProperties'. map: map });

I wonder if I'm missing something in my VSCode configuration then?

Re: typescript error creating MapView from TypeScript

ReneRubalcava — Thu, 03 Jul 2025 16:23:53 GMT

Tried this out with a new vite TS app and not seeing this. Could you try deleting your node_modules/package-lock.json/yarn.lock and try again? If you have a github repro, can take a look.

Re: typescript error creating MapView from TypeScript

john_cartwright_noaa — Thu, 03 Jul 2025 20:41:02 GMT

Thanks for the suggestion and your offer to help Rene. Re-creating the node_modules and package-lock.json file did not seem to help.

Here's the repo: git@github.com:CI-CMG/pointstore-dashboard.git

Re: typescript error creating MapView from TypeScript

ReneRubalcava — Thu, 03 Jul 2025 21:18:47 GMT

Found it! You have the old AMD types installed too, remove those and you should be good.

https://github.com/CI-CMG/pointstore-dashboard/blob/main/package.json#L21

Probably want to remove "src" from includes in the node tsconfig too

https://github.com/CI-CMG/pointstore-dashboard/blob/main/tsconfig.node.json#L27

Re: typescript error creating MapView from TypeScript

john_cartwright_noaa — Thu, 03 Jul 2025 21:41:10 GMT

Thank you Rene - that's really helpful!