TypeError: Cannot read properties of undefined (reading 'key')

[mariia-mitiureva]

After updating to 0.39.2 sometimes (quite rare) it crashes with the following error:

I happens randomly, not sure what can be a trigger. Did it happen to someone else?

[inokawa]

Hi, are you using React 19?

[mariia-mitiureva]

No, 18.3.1
So far it happened only in dev mode

[mariia-mitiureva]

Note: I updated from 0.33.3 to 0.39.2

[inokawa]

Thanks.
Actually the same error happened in my prod with react@19 and [email protected]. Still not sure what's causing it...

[aeharding]

I think I found an end user report. I haven't been able to repro yet:

aeharding/voyager#1799

In my bundle that is:

Seems to be

virtua/src/vue/utils.ts

Line 7 in 7539c2a

export const getKey = (e: VNode, i: number): Exclude<VNode["key"], null> => {

[aeharding]

@inokawa should this be converted to an issue?

[inokawa]

Thanks for the report. I created it #597