Production build fails with Unexpected token

Using npm run build to create a optimized production build, of a React Typescript application, that includes the react-select component fails to compile with an error with @floating-ui dependency.

Currently I am not very certain if this i truly a bug with react-select or with its @floating-ui dependency.

I could reproduce the error on multiple maschines and i am currently unable to create a production build of my application.

I have also pulled the example code of the react-select v5 code( https://codesandbox.io/s/react-select-v5-sandbox-y5jtm) and have tried to create a production build and that also fails with the following error.

npm run build

> my-app@0.1.0 build
> react-scripts build

Creating an optimized production build...
Failed to compile.

TypeError: /my-app/node_modules/@floating-ui/core/dist/floating-ui.core.browser.min.mjs: Cannot read properties of undefined (reading 'constantViolations')
    at transformFile.next (<anonymous>)
    at run.next (<anonymous>)
    at transform.next (<anonymous>)

I get the same results wenn using version 5.0.1 and 5.7.0. Additional if i create a new Typescript React application and include a react-select component i get a different error. But i believe they are related.

npm run build

> my-app@0.1.0 build
> react-scripts build

Creating an optimized production build...
Failed to compile.

TypeError: /my-app/node_modules/@floating-ui/core/dist/floating-ui.core.browser.min.mjs: Cannot read properties of undefined (reading 'constantViolations')
    at transformFile.next (<anonymous>)
    at run.next (<anonymous>)
    at transform.next (<anonymous>)

To Reproduce create a React Typescript project npx create-react-app my-app --template typescript add dependency in package.json "react-select": "5.7.0" Add a react-select component anywhere in the project. Delete .node_modules folder and run the following

npm install
npm run build

Environment Info:

current version of create-react-app: 5.0.1 running from .npm/_npx/c67e74de0542c87c/node_modules/create-react-app

System: OS: Linux 5.17 Ubuntu 22.04.1 LTS 22.04.1 LTS (Jammy Jellyfish) CPU: (16) x64 12th Gen Intel® Core™ i7-1260P Binaries: Node: 16.17.1 - ~/.nvm/versions/node/v16.17.1/bin/node Yarn: 1.22.19 - ~/.nvm/versions/node/v16.17.1/bin/yarn npm: 9.2.0 - ~/.nvm/versions/node/v16.17.1/bin/npm Browsers: Chrome: 108.0.5359.124 Firefox: 107.0.1 npmPackages: react: 17.0.2 => 17.0.2 react-dom: 17.0.2 => 17.0.2 react-scripts: 1.0.0 => 1.0.0 npmGlobalPackages: create-react-app: Not Found

[Danish-Mentorange]

We are getting the same error on our end as well

[Methuselah96]

Should be fixed in @babel/plugin-transform-block-scoping@7.20.9. Closing since this should be resolved now. If you are encountering this issue please make sure you are on the latest version of Babel (you may need to delete your package lock file to get the latest version of @babel/plugin-transform-block-scoping).