Animated.modulo (and other AnimatedInterpolation) does not call listener

[macrozone]

Is there an existing issue for this?

• I have searched the existing issues

Describe the issue

Animated.modulo does not call event listeners on update.

This codesandbox shows the issue: https://codesandbox.io/s/vibrant-lumiere-6p71s1?file=/src/App.js

check the logs

the same code does run the listener for both AnimatedValues on react-native, but only the first one on react-native-web.

the same problem exists with Animated.multiply and probably all other AnimatedInterpolations

Expected behavior

Animated.modulo should call addEventListener

Steps to reproduce

see https://codesandbox.io/s/vibrant-lumiere-6p71s1?file=/src/App.js

Test case

https://codesandbox.io/s/vibrant-lumiere-6p71s1?file=/src/App.js

Additional comments

No response

[necolas]

Yeah it's really annoying to sync modules like Animated, which regularly has bugs and needs patching in RN. See this issue for being able to take on the same version of Animated as is found in RN facebook/react-native#35263

[macrozone]

Yeah it's really annoying to sync modules like Animated, which regularly has bugs and needs patching in RN. See this issue for being able to take on the same version of Animated as is found in RN facebook/react-native#35263

I see, but I think the Bug may be fixed without the refactorings in react-native first.

I tried to debug it in my project, but did not find yet the culprit.

is there a way to test and try to reproduce it in react-native-web repo directly? Then i would first try to fix it.

[macrozone]

i checked again, actually the error is already present in react-native itself

[macrozone]

created an upstream issue facebook/react-native#37061

[necolas]

Thanks!