# Introduction
Avoid having multiple `isDefined` definition across our pacakges
Also avoid importing `isDefined` from `twenty-ui` which exposes a huge
barrel for a such little util function
## In a nutshell
Removed own `isDefined.ts` definition from `twenty-ui` `twenty-front`
and `twenty-server` to move it to `twenty-shared`.
Updated imports for each packages, and added explicit dependencies to
`twenty-shared` if not already in place
Related PR https://github.com/twentyhq/twenty/pull/9941
* feat: create a separate package for twenty-ui, extract the pill component with hard-coded theme values into it, and use the component inside twenty-front to complete the setup
* feat: extract the light and the dark theme into twenty-ui and update the AppThemeProvider component inside twenty-front to consume themes from twenty-ui
* fix: create a decorator inside preview.tsx to provide a default theme to storybook development server
* fix: remove redundant type declarations and revert back the naming convention for theme declarations
* fix: introduce a default value for pill label within the story for development server
* fix: introduce the nx script into package.json for twenty-ui and resolve imports for theme type within the package
* fix: remove the pill component from the twenty-front package along with the story for it
* fix: revert the package versions to those before running the nx cli command for storybook init
* feat: update readme to include details for building the ui library and starting the storybook development server
* fix: include details about twenty-ui inside jest.config for twenty-front to complete front-jest job
* - Added preview head for font
- Added theme addon for light/dark switch
- Added ComponentDecorator
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Co-authored-by: Lucas Bordeau <bordeau.lucas@gmail.com>
