Files
twenty/packages/twenty-ui/vite.config.ts
T
Charles Bochet 1db2a40961 Migrate twenty ui to linaria (#18307)
## Migrate twenty-ui from Emotion to Linaria

Completes the migration of all `twenty-ui` components from Emotion
(runtime CSS-in-JS) to Linaria (zero-runtime, CSS extracted at build
time).

- Replaced `@emotion/styled` with `@linaria/react` across ~170 files
- Removed all Emotion dependencies from `twenty-ui`
- Introduced a CSS custom properties-based theme system:
`themeCssVariables` where every leaf is a `var(--t-xxx)` reference,
injected onto `document.documentElement` by
`ThemeCssVariableInjectorEffect`
- No more `theme` prop threading — styled components reference
`themeCssVariables.x.y` directly at build time
- Updated `twenty-front` consumers to remove `theme={theme}` prop
passing

**Before / After:**
```tsx
// Emotion
color: ${({ theme }) => theme.font.color.primary};
padding: ${({ theme }) => theme.spacing(4)};

// Linaria
color: ${themeCssVariables.font.color.primary};
padding: ${themeCssVariables.spacing[4]};
```

### Theme architecture

Two build-time utilities produce the theme system:

- **`buildThemeReferencingRootCssVariables`** — walks the theme object
and builds a nested mirror where every leaf is a `var(--t-xxx)` string
(evaluated at build time by wyw-in-js)
- **`prepareThemeForRootCssVariableInjection`** — walks the runtime
theme and collects flat `[--css-variable-name, value]` pairs, injected
onto `document.documentElement` by `ThemeCssVariableInjectorEffect`

Both share naming conventions (`camelToKebab`, `SPACING_VALUES`,
`formatSpacingKey`) and are unit tested.

### Spacing cleanup

Spacing scale now uses integers 0–32 (generated via loop), with `0.5`
and `1.5` as the only fractional exceptions. All other fractional
spacing usages (`0.25`, `0.75`, `1.25`, `2.5`, `3.5`) were replaced with
literal pixel values across ~20 twenty-front files.

### Framer Motion integration

Linaria doesn't support `styled(motion.div)` — wrapping a motion element
with `styled()` causes the component body to be stripped at build time.
Instead, we define the styled component first, then wrap it with
`motion.create()`:

```tsx
const StyledBarBase = styled.div`
  background-color: ${themeCssVariables.font.color.primary};
  height: 100%;
`;

const StyledBar = motion.create(StyledBarBase);
```

### Block interpolations

Linaria doesn't support interpolations that return multiple CSS
declarations (Linaria wraps the entire block in a single `var()`,
producing invalid CSS). These were split into individual property
interpolations:

```tsx
// Emotion — single interpolation returning multiple declarations
border-left: ${({ divider, theme }) => {
  const border = `1px solid ${theme.border.color.light}`;
  return divider ? `border-${divider}: ${border}` : '';
}}

// Linaria — one interpolation per property
border-left: ${({ divider }) =>
  divider === 'left' ? `1px solid ${themeCssVariables.border.color.light}` : 'none'};
border-right: ${({ divider }) =>
  divider === 'right' ? `1px solid ${themeCssVariables.border.color.light}` : 'none'};
```

### Dynamic styles via CSS variables

When a component needs to compute styles from multiple props with
complex branching logic (e.g. `Button` combining `variant`, `accent`,
`inverted`, `disabled`, `focus`, `position`), Linaria's prop
interpolations become unwieldy. In those cases we use a
`computeDynamicStyles` function that returns a `CSSProperties` object
injected via `style={}`, referenced from the static CSS with `var()`:

```tsx
const StyledButton = styled.button`
  background: var(--btn-bg);
  border-color: var(--btn-border-color);
  &:hover { background: var(--btn-hover-bg); }
`;

const dynamicStyles = useMemo(() => {
  const s = computeButtonDynamicStyles(variant, accent, ...);
  return { '--btn-bg': s.background, '--btn-hover-bg': s.hoverBackground } as CSSProperties;
}, [variant, accent, ...]);

return <StyledButton style={dynamicStyles} />;
```

### CSS var + unit concatenation

CSS custom properties can't be concatenated with unit suffixes directly
(`var(--x)px` is invalid). Values that need units use `calc()`:

```tsx
// Broken
transition: background ${themeCssVariables.animation.duration.instant}s ease;

// Fixed
transition: background calc(${themeCssVariables.animation.duration.instant} * 1s) ease;
```
2026-03-01 15:13:42 +01:00

137 lines
3.6 KiB
TypeScript

import react from '@vitejs/plugin-react-swc';
import wyw from '@wyw-in-js/vite';
import * as path from 'path';
import { defineConfig } from 'vite';
import checker from 'vite-plugin-checker';
import dts, { type PluginOptions } from 'vite-plugin-dts';
import svgr from 'vite-plugin-svgr';
import tsconfigPaths from 'vite-tsconfig-paths';
type Checkers = Parameters<typeof checker>[0];
import packageJson from './package.json';
const entries = Object.keys(packageJson.exports)
.filter((el) => el !== './style.css')
.map((module) => `src/${module}/index.ts`);
const entryFileNames = (chunk: any, extension: 'cjs' | 'mjs') => {
if (!chunk.isEntry) {
throw new Error(
`Should never occurs, encountered a non entry chunk ${chunk.facadeModuleId}`,
);
}
const splitFaceModuleId = chunk.facadeModuleId?.split('/');
if (splitFaceModuleId === undefined) {
throw new Error(
`Should never occurs splitFaceModuleId is undefined ${chunk.facadeModuleId}`,
);
}
const moduleDirectory = splitFaceModuleId[splitFaceModuleId?.length - 2];
if (moduleDirectory === 'src') {
return `${chunk.name}.${extension}`;
}
return `${moduleDirectory}.${extension}`;
};
export default defineConfig(({ command }) => {
const isBuildCommand = command === 'build';
const tsConfigPath = isBuildCommand
? path.resolve(__dirname, './tsconfig.lib.json')
: path.resolve(__dirname, './tsconfig.json');
const checkersConfig: Checkers = {
typescript: {
tsconfigPath: tsConfigPath,
},
};
const dtsConfig: PluginOptions = {
entryRoot: 'src',
tsconfigPath: tsConfigPath,
};
return {
resolve: {
alias: {
'@ui/': path.resolve(__dirname, 'src') + '/',
'@assets/': path.resolve(__dirname, 'src/assets') + '/',
},
},
css: {
modules: {
localsConvention: 'camelCaseOnly',
},
},
optimizeDeps: {
exclude: ['../../node_modules/.vite', '../../node_modules/.cache'],
},
root: __dirname,
cacheDir: '../../node_modules/.vite/packages/twenty-ui',
assetsInclude: ['src/**/*.svg'],
plugins: [
react(),
tsconfigPaths({
root: __dirname,
projects: ['tsconfig.json'],
}),
svgr(),
dts(dtsConfig),
checker(checkersConfig),
wyw({
babelOptions: {
presets: ['@babel/preset-typescript', '@babel/preset-react'],
},
}),
],
build: {
cssCodeSplit: false,
minify: 'esbuild',
sourcemap: false,
emptyOutDir: false,
outDir: './dist',
reportCompressedSize: true,
commonjsOptions: {
transformMixedEsModules: true,
interopDefault: true,
defaultIsModuleExports: true,
requireReturnsDefault: 'auto',
},
lib: {
entry: ['src/index.ts', ...entries],
name: 'twenty-ui',
},
rollupOptions: {
external: Object.keys(packageJson.dependencies || {}),
output: [
{
assetFileNames: 'style.css',
globals: {
react: 'React',
'react-dom': 'ReactDOM',
},
format: 'es',
entryFileNames: (chunk) => entryFileNames(chunk, 'mjs'),
},
{
assetFileNames: 'style.css',
format: 'cjs',
globals: {
react: 'React',
'react-dom': 'ReactDOM',
},
interop: 'auto',
esModule: true,
exports: 'named',
entryFileNames: (chunk) => entryFileNames(chunk, 'cjs'),
},
],
},
},
logLevel: 'error',
};
});