Exception in Hostfunction: not implemented about react-native-reanimated HOT 36 OPEN

Until a fix is provided, you have 2 options:

1. Upgrade to react-native v074.1 (can use latest react-native-reanimated)
2. Downgrade to react-native-reanimated v3.6.1 (works with react-native v73)

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I've asked @szydlovsky to investigate this issue, fingers crossed 🤞

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@szydlovsky I use react-native-reanimated 3.6.2 and it run.
Clearing cache and reinstalling didn't solve my problem.

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@tomekzaw It seems like this issue happens when we try to use "@gorhom/bottom-sheet": "^4.5.1", and the latest reanimated version

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@szydlovsky I just tried your steps but I keep getting

Exception in Hostfunction: not implemented

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@szydlovsky It's still not working. I'm getting these errors:

ERROR  Error: Exception in HostFunction: Not implemented 
ERROR  TypeError: undefined is not an object (evaluating '_$$_REQUIRE(_dependencyMap[21], "@gorhom/bottom-sheet").BottomSheetModalProvider')

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@akylbek-hostaways I've done some digging and found out that our repros mostly differ by react-native versions - your uses 0.73.8 and it doesn't work - my uses 0.74.1. I suggest you try bumping it up

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Same issue on android RN version 73.6 and 3.11.0 reanimated

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I have my own project that is not possible to share

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@ShahzaibMunir Can you please run pod install in ios directory of your app again and see if it helps?

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I have the same problem.
I've tried deleting the Pods folder and run pod install, but still can't solve it.

Reanimated version
3.10.0
React Native version
0.73.8
@react-navigation/drawer version
6.6.15
react-native-gesture-handler version
2.12.0

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I have the same problem.
I've tried deleting nodemodule, yarn lock ,pod lock and run again, the Pods folder and run pod install, but still can't solve it.

Reanimated version
3.10.0
React Native version
0.72.4

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Getting same issue here as well.

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Exception in HostFunction: <unknown>

"react-native-gesture-handler" - "2.14.1"
"react-native-reanimated" - "3.8.1"

Got the same error on any use of reanimated

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Facing the same issue,
Error: Exception in HostFunction: Not implemented

Please let me know if there is any fix for this issue

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Thanks for reporting this problem.

Can you please submit a repro or at least paste full logs from Metro console (from the very beginning)?

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One possible solution is that we can downgrade the version of react-native-reanimated to something less than 3.10.0 both globally and within the project. This solved the issue for me until react-native-reanimated solves the issue.

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@ShahzaibMunir @jenny-chiang @NeverGone97 @daveosterjr @Squanbri @Geenesh03 @akylbek-hostaways (sorry for the verbose ping)
Hey everyone! I will soon try to find a repro for the issue, but before that try making a full clear of the project:

1. Run git clean -xdf from the root of the project
2. From the root execute: yarn && yarn build && cd ios && bundle install && bundle exec pod install && cd .. && yarn start --reset-cache It pretty much resets all caches and stuff

Let me know if made any difference. If not - I will proceed to finding the repro.

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Also, @akylbek-hostaways could you try applying the patch from here? Since you say it is connected to @gorhom/bottom-sheet that might fix it.

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@akylbek-hostaways one more thing that sparks to mind - have you tried bumping bottom sheet package to the latest version (4.6.1) ?

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@szydlovsky Yes, I tried with the alpha version as well, but I still get the same error.

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@jenny-chiang Can you check the global version of the react-native-reanimated, using npm list -g this will list the version of react-native-reanimated installed globally. Remove it and try re-installing the required version.

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@Geenesh03 I have not installed react-native-reanimated in the global.
I only installed in my project.

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Hey guys, I am still trying to find a repro. I created a sample repo with @gorhom/bottom-sheet, react-native-reanimated and react-native-gesture-handler: https://github.com/szydlovsky/reaniamtedHostFunctionCrashRepro

Its package.json is:

{
  "name": "reaniamtedHostFunctionCrashRepro",
  "version": "0.0.1",
  "private": true,
  "scripts": {
    "android": "react-native run-android",
    "ios": "react-native run-ios",
    "lint": "eslint .",
    "start": "react-native start",
    "test": "jest"
  },
  "dependencies": {
    "@gorhom/bottom-sheet": "^4.6.1",
    "react": "18.2.0",
    "react-native": "0.74.1",
    "react-native-gesture-handler": "^2.16.2",
    "react-native-reanimated": "^3.11.0"
  },
  "devDependencies": {
    "@babel/core": "^7.20.0",
    "@babel/preset-env": "^7.20.0",
    "@babel/runtime": "^7.20.0",
    "@react-native/babel-preset": "0.74.83",
    "@react-native/eslint-config": "0.74.83",
    "@react-native/metro-config": "0.74.83",
    "@react-native/typescript-config": "0.74.83",
    "@types/react": "^18.2.6",
    "@types/react-test-renderer": "^18.0.0",
    "babel-jest": "^29.6.3",
    "eslint": "^8.19.0",
    "jest": "^29.6.3",
    "prettier": "2.8.8",
    "react-test-renderer": "18.2.0",
    "typescript": "5.0.4"
  },
  "engines": {
    "node": ">=18"
  },
  "packageManager": "[email protected]"
}

And its babel.config.js is:

module.exports = {
  presets: ['module:@react-native/babel-preset'],
  plugins: ['react-native-reanimated/plugin'],
};

It contains some sample code using bottom-sheet. Can anyone clone it and see if the crash is still there? It works perfectly for me.

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@szydlovsky Yes, your repository works well. This issue can be related to the JSC, because it started giving errors when hermesjs is disabled

https://github.com/akylbek-hostaways/repro-animated

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@szydlovsky works fine.
Interesting that for my repo everything worked fine till yesterday

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@akylbek-hostaways alright, your repro throws - time to investigate

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Here's some reference how to do it: https://reactnative.dev/docs/upgrading

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Also this: https://react-native-community.github.io/upgrade-helper/

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@akylbek-hostaways I've done some digging and found out that our repros mostly differ by react-native versions - your uses 0.73.8 and it doesn't work - my uses 0.74.1. I suggest you try bumping it up

Is there a way to solve this issue in 0.73.*? I can't upgrade to version 0.74.0 due to some compatibility reasons for now.

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any update on this ? facing same issue.

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Hello,

Any workaround for this?

Thanks in advance :)

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I faced the same issue while using bottom sheet, it got fixed by making these changes in the version

"@gorhom/bottom-sheet": "^4.6.1",
"react-native": "0.73.1",
"react-native-gesture-handler": "^2.16.2",
"react-native-reanimated": "3.6.1",

i am using node - 21.7.3
@PrinceD96 good workaround

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1. Downgrade to react-native-reanimated v3.6.1 by removing ^ in package.json
2. Install node_modules again,
3. reset cache of metro server.

_the only workaround until you decide to upgrade project latest 74. + version._*

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I faced the same issue while using reanimated

"react-native": "0.72.1",
"react-native-reanimated": "^3.4.2",

Anyone find fix around?

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Another workaround for versions below 0.74 is enabling hermesjs

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