TypeError: a.forEach is not a function

[gmsy]

Just installed gojs and gojs-react as described on the official documentation, However when I copy-pasted the code sample from that same page ("Rendering the component" section), I get a TypeError: a.forEach is not a function (as shown on screenshot).

How can I fix that? Thanks.

[simonsarris]

I'm not one of the resident react experts, but that page might be a little out of date compared to the gojs-react-basic example.

Still, when I pasted the code into a new project, changing it only a little, I did not come across this a.forEach issue. Did you add anything else?

[WalterNorthwoods]

It sounds as if you are not passing an Array as the diagram's model's nodeDataArray.

[gmsy]

Thank you guys for the replies. For some reason the example on the official documentation gave me that error, but the gojs-react-basic example did work. Thanks!