Charles Bochet
c41a8e2b23
## Summary Now that Twenty has fully migrated from Emotion to Linaria, the theme system has been simplified to remove unnecessary complexity that existed only to support the old runtime injection pattern. ### What changed - **Deleted** `generateThemeConstants.ts` script and the entire `generated/` directory — no more auto-generation - **Added** `theme-light.css` and `theme-dark.css`: static CSS files with 991 custom properties each, scoped under `.light` and `.dark` selectors respectively - **Moved** `themeCssVariables.ts` out of `generated/` and hand-maintain it as a static `as const` object of `var(--t-*)` references (Linaria can statically evaluate these at build time) - **Extracted** numeric constants (`MOBILE_VIEWPORT`, `ICON_SIZES`, `ICON_STROKES`) into a new `constants.ts` — CSS variables can't be used in media queries or as numeric icon size props - **Simplified** `ThemeContextProvider`: removed `ThemeCssVariableInjectorEffect` entirely; now uses a single `useLayoutEffect` to toggle `.light`/`.dark` class on `<html>` - **Added** `class="light"` to `index.html` as default to prevent FOUC before React hydration ### Why The previous setup maintained a dual system: JS theme objects (`THEME_LIGHT`/`THEME_DARK`) used at runtime, plus a generation script that produced CSS variable entry arrays, which were then injected into the DOM by `ThemeCssVariableInjectorEffect`. With Linaria, theme values only need to be CSS custom properties — the JS objects were redundant. This PR removes ~250 lines of infrastructure while keeping the same theming capabilities.
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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.
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
- Customize your objects and fields
- Create and manage permissions with custom roles
- Automate workflow with triggers and actions
- Emails, calendar events, files, and more
Personalize layouts with filters, sort, group by, kanban and table views
Customize your objects and fields
Create and manage permissions with custom roles
Automate workflow with triggers and actions
Emails, calendar events, files, and more
Stack
- TypeScript
- Nx
- NestJS, with BullMQ, PostgreSQL, Redis
- React, with Jotai, Linaria and Lingui
Thanks
Thanks to these amazing services that we use and recommend for UI testing (Chromatic), code review (Greptile), catching bugs (Sentry) and translating (Crowdin).
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