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---
title: Ghid de stil
icon: paintbrush
description: Convenții de cod și bune practici pentru a contribui la Twenty.
---
## React
### Doar componente funcționale
Folosește întotdeauna componente funcționale TSX cu exporturi denumite.
```tsx
// ❌ Bad
const MyComponent = () => {
return <div>Hello World</div>;
};
export default MyComponent;
// ✅ Good
export function MyComponent() {
return <div>Hello World</div>;
};
```
### Proprietăți
Creează un tip numit `{ComponentName}Props`. Folosește destructurarea. Nu folosi `React.FC`.
```tsx
type MyComponentProps = {
name: string;
};
export const MyComponent = ({ name }: MyComponentProps) => <div>Hello {name}</div>;
```
### Fără spread al unei singure variabile de props
```tsx
// ❌ Bad
const MyComponent = (props: MyComponentProps) => <Other {...props} />;
// ✅ Good
const MyComponent = ({ prop1, prop2 }: MyComponentProps) => <Other {...{ prop1, prop2 }} />;
```
## Managementul stării
### Atomi Jotai pentru starea globală
```tsx
import { createAtomState } from '@/ui/utilities/state/jotai/utils/createAtomState';
import { useAtomState } from '@/ui/utilities/state/jotai/hooks/useAtomState';
export const myAtomState = createAtomState<string>({
key: 'myAtomState',
defaultValue: 'default value',
});
```
* Preferă atomii în locul prop drilling-ului
* Nu folosi `useRef` pentru stare — folosește `useState` sau atomi
* Folosește familii de atomi și selectori pentru liste
### Evită re-randări inutile
* Extrage `useEffect` și preluarea datelor în componente surori de tip sidecar
* Preferă handleri de evenimente (`handleClick`, `handleChange`) în locul lui `useEffect`
* Nu folosi `React.memo()` — în schimb, rezolvă cauza principală
* Limitează utilizarea `useCallback` / `useMemo`
```tsx
// ❌ Bad — useEffect in the same component causes re-renders
export const Page = () => {
const [data, setData] = useAtomState(dataState);
const [dep] = useAtomState(depState);
useEffect(() => { setData(dep); }, [dep]);
return <div>{data}</div>;
};
// ✅ Good — extract into sibling
export const PageData = () => {
const [data, setData] = useAtomState(dataState);
const [dep] = useAtomState(depState);
useEffect(() => { setData(dep); }, [dep]);
return <></>;
};
export const Page = () => {
const [data] = useAtomState(dataState);
return <div>{data}</div>;
};
```
## TypeScript
* **`type` în loc de `interface`** — mai flexibil, mai ușor de compus
* **Șiruri literale în loc de enum-uri** — cu excepția enum-urilor generate de GraphQL codegen și a API-urilor interne ale bibliotecii
* **Fără `any`** — TypeScript strict este impus
* **Fără importuri de tip** — folosește importuri obișnuite (impus de Oxlint `typescript/consistent-type-imports`)
* **Folosește [Zod](https://github.com/colinhacks/zod)** pentru validarea în timp de execuție a obiectelor netipizate
## JavaScript
```tsx
// Use nullish-coalescing (??) instead of ||
const value = process.env.MY_VALUE ?? 'default';
// Use optional chaining
onClick?.();
```
## Denumiri
* **Variabile**: camelCase, descriptive (`email` nu `value`, `fieldMetadata` nu `fm`)
* **Constante**: SCREAMING_SNAKE_CASE
* **Tipuri/Clase**: PascalCase
* **Fișiere/directoare**: kebab-case (`.component.tsx`, `.service.ts`, `.entity.ts`)
* **Handleri de evenimente**: `handleClick` (nu `onClick` pentru funcția handler)
* **Props de componentă**: prefixează cu numele componentei (`ButtonProps`)
* **Componente stilizate**: prefixează cu `Styled` (`StyledTitle`)
## Stilizare
Folosește componente stilizate [Linaria](https://github.com/callstack/linaria). Folosește valorile din temă — evită `px`, `rem` sau culori hardcodate.
```tsx
// ❌ Bad
const StyledButton = styled.button`
color: #333333;
font-size: 1rem;
margin-left: 4px;
`;
// ✅ Good
const StyledButton = styled.button`
color: ${({ theme }) => theme.font.color.primary};
font-size: ${({ theme }) => theme.font.size.md};
margin-left: ${({ theme }) => theme.spacing(1)};
`;
```
## Importuri
Folosește aliasuri în locul căilor relative:
```tsx
// ❌ Bad
import { Foo } from '../../../../../testing/decorators/Foo';
// ✅ Good
import { Foo } from '~/testing/decorators/Foo';
import { Bar } from '@/modules/bar/components/Bar';
```
## Structura folderelor
```
front
└── modules/ # Feature modules
│ └── module1/
│ ├── components/
│ ├── constants/
│ ├── contexts/
│ ├── graphql/ (fragments, queries, mutations)
│ ├── hooks/
│ ├── states/ (atoms, selectors)
│ ├── types/
│ └── utils/
└── pages/ # Route-level components
└── ui/ # Reusable UI components (display, input, feedback, ...)
```
* Modulele pot importa din alte module, dar `ui/` ar trebui să rămână fără dependențe
* Folosește subfoldere `internal/` pentru cod privat modulului
* Componente sub 300 de linii, servicii sub 500 de linii