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Charles BochetandGitHub 7a2e397ad1 Complete linaria migration (#18361) 
## Summary

Completes the migration of the frontend styling system from **Emotion**
(`@emotion/styled`, `@emotion/react`) to **Linaria** (`@linaria/react`,
`@linaria/core`), a zero-runtime CSS-in-JS library where styles are
extracted at build time.

This is the final step of the migration — all ~494 files across
`twenty-front`, `twenty-ui`, `twenty-website`, and `twenty-sdk` are now
fully converted.

## Changes

### Styling Migration (across ~480 component files)
- Replaced all `@emotion/styled` imports with `@linaria/react`
- Converted runtime theme access patterns (`({ theme }) => theme.x.y`)
to build-time `themeCssVariables` CSS custom properties
- Replaced `useTheme()` hook (from Emotion) with
`useContext(ThemeContext)` where runtime theme values are still needed
(e.g., passing colors to non-CSS props like icon components)
- Removed `@emotion/react` `css` helper usages in favor of Linaria
template literals

### Dependency & Configuration Changes
- **Removed**: `@emotion/react`, `@emotion/styled` from root
`package.json`
- **Added**: `@wyw-in-js/babel-preset`, `next-with-linaria` (for
twenty-website SSR support)
- Updated Nx generator defaults from `@emotion/styled` to
`@linaria/react` in `nx.json`
- Simplified `vite.config.ts` (removed Emotion-specific configuration)
- Updated `twenty-website/next.config.js` to use `next-with-linaria` for
SSR Linaria support

### Storybook & Testing
- Removed `ThemeProvider` from Emotion in Storybook previews
(`twenty-front`, `twenty-sdk`)
- Now relies solely on `ThemeContextProvider` for theme injection

### Documentation
- Removed the temporary `docs/emotion-to-linaria-migration-plan.md`
(migration complete)
- Updated `CLAUDE.md` and `README.md` to reflect Linaria as the styling
stack
- Updated frontend style guide docs across all locales

## How it works

Linaria extracts styles at build time via the `@wyw-in-js/vite` plugin.
All expressions in `styled` template literals must be **statically
evaluable** — no runtime theme objects or closures over component state.

- **Static styles** use `themeCssVariables` which map to CSS custom
properties (`var(--theme-color-x)`)
- **Runtime theme access** (for non-CSS use cases like icon `color`
props) uses `useContext(ThemeContext)` instead of Emotion's `useTheme()`
2026-03-04 00:50:06 +01:00

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<p align="center">
<a href="https://www.twenty.com">
<img src="./packages/twenty-website/public/images/core/logo.svg" width="100px" alt="Twenty logo" />
</a>
</p>
<h2 align="center" >The #1 Open-Source CRM </h2>
<p align="center"><a href="https://twenty.com">🌐 Website</a> · <a href="https://docs.twenty.com">📚 Documentation</a> · <a href="https://github.com/orgs/twentyhq/projects/1"><img src="./packages/twenty-website/public/images/readme/planner-icon.svg" width="12" height="12"/> Roadmap </a> · <a href="https://discord.gg/cx5n4Jzs57"><img src="./packages/twenty-website/public/images/readme/discord-icon.svg" width="12" height="12"/> Discord</a> · <a href="https://www.figma.com/file/xt8O9mFeLl46C5InWwoMrN/Twenty"><img src="./packages/twenty-website/public/images/readme/figma-icon.png" width="12" height="12"/> Figma</a></p>
<br />
<p align="center">
<a href="https://www.twenty.com">
<picture>
<source media="(prefers-color-scheme: dark)" srcset="https://raw.githubusercontent.com/twentyhq/twenty/refs/heads/main/packages/twenty-website/public/images/readme/github-cover-dark.png" />
<source media="(prefers-color-scheme: light)" srcset="https://raw.githubusercontent.com/twentyhq/twenty/refs/heads/main/packages/twenty-website/public/images/readme/github-cover-light.png" />
<img src="./packages/twenty-website/public/images/readme/github-cover-light.png" alt="Cover" />
</picture>
</a>
</p>
<br />
# Installation
See:
🚀 [Self-hosting](https://docs.twenty.com/developers/self-hosting/docker-compose)
🖥️ [Local Setup](https://docs.twenty.com/developers/local-setup)
# Why Twenty
We built Twenty for three reasons:
**CRMs are too expensive, and users are trapped.** Companies use locked-in customer data to hike prices. It shouldn't be that way.
**A fresh start is required to build a better experience.** We can learn from past mistakes and craft a cohesive experience inspired by new UX patterns from tools like Notion, Airtable or Linear.
**We believe in Open-source and community.** Hundreds of developers are already building Twenty together. Once we have plugin capabilities, a whole ecosystem will grow around it.
<br />
# What You Can Do With Twenty
Please feel free to flag any specific needs you have by creating an issue.
Below are a few features we have implemented to date:
+ [Personalize layouts with filters, sort, group by, kanban and table views](#personalize-layouts-with-filters-sort-group-by-kanban-and-table-views)
+ [Customize your objects and fields](#customize-your-objects-and-fields)
+ [Create and manage permissions with custom roles](#create-and-manage-permissions-with-custom-roles)
+ [Automate workflow with triggers and actions](#automate-workflow-with-triggers-and-actions)
+ [Emails, calendar events, files, and more](#emails-calendar-events-files-and-more)
## Personalize layouts with filters, sort, group by, kanban and table views
<p align="center">
<picture>
<source media="(prefers-color-scheme: dark)" srcset="https://raw.githubusercontent.com/twentyhq/twenty/refs/heads/main/packages/twenty-website/public/images/readme/views-dark.png" />
<source media="(prefers-color-scheme: light)" srcset="https://raw.githubusercontent.com/twentyhq/twenty/refs/heads/main/packages/twenty-website/public/images/readme/views-light.png" />
<img src="./packages/twenty-website/public/images/readme/views-light.png" alt="Companies Kanban Views" />
</picture>
</p>
## Customize your objects and fields
<p align="center">
<picture>
<source media="(prefers-color-scheme: dark)" srcset="https://raw.githubusercontent.com/twentyhq/twenty/refs/heads/main/packages/twenty-website/public/images/readme/data-model-dark.png" />
<source media="(prefers-color-scheme: light)" srcset="https://raw.githubusercontent.com/twentyhq/twenty/refs/heads/main/packages/twenty-website/public/images/readme/data-model-light.png" />
<img src="./packages/twenty-website/public/images/readme/data-model-light.png" alt="Setting Custom Objects" />
</picture>
</p>
## Create and manage permissions with custom roles
<p align="center">
<picture>
<source media="(prefers-color-scheme: dark)" srcset="https://raw.githubusercontent.com/twentyhq/twenty/refs/heads/main/packages/twenty-website/public/images/readme/permissions-dark.png" />
<source media="(prefers-color-scheme: light)" srcset="https://raw.githubusercontent.com/twentyhq/twenty/refs/heads/main/packages/twenty-website/public/images/readme/permissions-light.png" />
<img src="./packages/twenty-website/public/images/readme/permissions-light.png" alt="Permissions" />
</picture>
</p>
## Automate workflow with triggers and actions
<p align="center">
<picture>
<source media="(prefers-color-scheme: dark)" srcset="https://raw.githubusercontent.com/twentyhq/twenty/refs/heads/main/packages/twenty-website/public/images/readme/workflows-dark.png" />
<source media="(prefers-color-scheme: light)" srcset="https://raw.githubusercontent.com/twentyhq/twenty/refs/heads/main/packages/twenty-website/public/images/readme/workflows-light.png" />
<img src="./packages/twenty-website/public/images/readme/workflows-light.png" alt="Workflows" />
</picture>
</p>
## Emails, calendar events, files, and more
<p align="center">
<picture>
<source media="(prefers-color-scheme: dark)" srcset="https://raw.githubusercontent.com/twentyhq/twenty/refs/heads/main/packages/twenty-website/public/images/readme/plus-other-features-dark.png" />
<source media="(prefers-color-scheme: light)" srcset="https://raw.githubusercontent.com/twentyhq/twenty/refs/heads/main/packages/twenty-website/public/images/readme/plus-other-features-light.png" />
<img src="./packages/twenty-website/public/images/readme/plus-other-features-light.png" alt="Other Features" />
</picture>
</p>
<br />
# Stack
- [TypeScript](https://www.typescriptlang.org/)
- [Nx](https://nx.dev/)
- [NestJS](https://nestjs.com/), with [BullMQ](https://bullmq.io/), [PostgreSQL](https://www.postgresql.org/), [Redis](https://redis.io/)
- [React](https://reactjs.org/), with [Jotai](https://jotai.org/), [Linaria](https://linaria.dev/) and [Lingui](https://lingui.dev/)
# Thanks
<p align="center">
<a href="https://www.chromatic.com/"><img src="./packages/twenty-website/public/images/readme/chromatic.png" height="30" alt="Chromatic" /></a>
<a href="https://greptile.com"><img src="./packages/twenty-website/public/images/readme/greptile.png" height="30" alt="Greptile" /></a>
<a href="https://sentry.io/"><img src="./packages/twenty-website/public/images/readme/sentry.png" height="30" alt="Sentry" /></a>
<a href="https://crowdin.com/"><img src="./packages/twenty-website/public/images/readme/crowdin.png" height="30" alt="Crowdin" /></a>
<a href="https://e2b.dev/"><img src="./packages/twenty-website/public/images/readme/e2b.svg" height="30" alt="E2B" /></a>
</p>
Thanks to these amazing services that we use and recommend for UI testing (Chromatic), code review (Greptile), catching bugs (Sentry) and translating (Crowdin).
# Join the Community
- Star the repo
- Subscribe to releases (watch -> custom -> releases)
- Follow us on [Twitter](https://twitter.com/twentycrm) or [LinkedIn](https://www.linkedin.com/company/twenty/)
- Join our [Discord](https://discord.gg/cx5n4Jzs57)
- Improve translations on [Crowdin](https://twenty.crowdin.com/twenty)
- [Contributions](https://github.com/twentyhq/twenty/contribute) are, of course, most welcome!
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