Unable to run Chakra on apps in repo

[TatianaKapos]

Problem Description

When trying to run Chakra on playground and testerapp (have switched UseHermes flag to false) the following error message appears

This makes it hard to debug problems in integrations that are specific to Chakra

Steps To Reproduce

1. Use the "Chakra" option on playground
2. RnTester won't run

Expected Results

1. App runs with chakra

CLI version

npx @react-native-community/cli -v

Environment

npx @react-native-community/cli info

Community Modules

No response

Target Platform Version

10.0.22621

Target Device(s)

Desktop

Visual Studio Version

Visual Studio 2022

Build Configuration

Debug

Snack, code example, screenshot, or link to a repository

No response

[jonthysell]

Searching online, this appears to be an error with using a new RegEx feature in JS that an older JS engine doesn't understand.

In the past, when we've run into an issue where Chakra can't use some bit of new JS syntax, we find out what the new syntax is and then add a new babel transformer plugin to our RN babel config to transform it into something Chakra can run.

This may or may not be possible with RegEx features specifically though, and we may need to re-write the offending code (if possible) in a patch.

Or we just stop supporting Chakra ;)

[TatianaKapos]

@jonthysell Will look into it! And just clarifying, this error isn't coming for the integration (although the Chakra e2etests are failing on the integration at ScrollView). This Error is coming from trying to run any Chakra app on the main branch, which means the only way to debug Chakra error is through the CI which just takes an hour to build and is very time consuming.

Possibly I'm missing a step when trying to run Chakra? I've set the useHermes flag to false and clicked the Chakra option on playground

[TatianaKapos]

fixed on integration!