[v4] Cannot read property toString of undefined

Bug

After upgrading from 4 to 4.1.5 I get this error message: Cannot read property toString of undefined. Tried to debug a bit and it seems like in utils.js there is one exported function below:

// builds one big hash from multiple worklets' hashes
export function buildWorkletsHash(handlers) {
    return Object.values(handlers).reduce((acc, worklet) => 
    // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
    acc + worklet.__workletHash.toString(), '');
}

worklet.__workletHash.toString() seems to be undefined for me. Console logging worklet.__workletHash gives me [Function onEnd]

Environment info

Library	Version
@gorhom/bottom-sheet	4.1.5
react-native	0.66.4
react-native-reanimated	2.3.1
react-native-gesture-handler	2.2.0

Steps To Reproduce

1. Current version 4
2. Upgrade to 4.1.5

Describe what you expected to happen:

1. Eveything to work out of the box as with the prev installed version

Reproducible sample code

Please note that everything was working out just perfect until I decided to upgrade the package. I understand this might not be an issue with the lib itself so I will appreciate any ideas and hints on how to debug further to find out what the issue is.

Thanks

[rahmanharoon]

Any update on this…??

[christiaankreeftmeijer]

https://docs.swmansion.com/react-native-reanimated/docs/fundamentals/installation#babel-plugin

Thanks! This fixed it for me. Did add the plugin before but needed to clear the cache too.