# @fayegram-ai/faye-ui/controls/switch

Public exports and dependency-resolved component properties, with usage and rendering guidance.

## Import

```tsx
import { Switch } from '@fayegram-ai/faye-ui/controls/switch';
```

[Usage and behavior guide](/docs/selection/) · [API JSON](/api/packages/controls/switch.json)

This entry declares a client boundary. Follow the rendering guide for framework integration.

## Public exports

| Name | Kind | Resolved declaration type |
|---|---|---|
| `Switch` | value | `{ readonly Root: { (input: Omit<import("@base-ui/react").SwitchRootProps, "ref"> & import("react").RefAttributes<HTMLElement> & { variants?: { readonly size?: import("@fayegram-ai/faye-ui/contracts/visual-variants").VisualVariant<"switch", "size"> \| undefined; readonly tone?: import("@fayegram-ai/faye-ui/contracts/visual-variants").VisualVariant<"switch", "tone"> \| undefined; } \| undefined; }): import("react").ReactElement; displayName: string; }; readonly Thumb: { (input: Omit<import("@base-ui/react").SwitchThumbProps, "ref"> & import("react").RefAttributes<HTMLSpanElement> & { variants?: { readonly size?: import("@fayegram-ai/faye-ui/contracts/visual-variants").VisualVariant<"switch", "size"> \| undefined; readonly tone?: import("@fayegram-ai/faye-ui/contracts/visual-variants").VisualVari… (full type in API JSON)` |

## Switch

Public component; use the linked family guide for complete composition and behavior.

Dependency-resolved declaration properties. Common React/native HTML attributes are omitted from the table; use the full declaration and React/native references. Generic and union restrictions remain authoritative in TypeScript.

### Switch.Root

| Property | Required | Type | Meaning |
|---|---|---|---|
| `checked` | No | `boolean \| undefined` | Whether the switch is currently active. To render an uncontrolled switch, use the `defaultChecked` prop instead. |
| `className` | No | `string \| ((state: SwitchRootState) => string \| undefined) \| undefined` | CSS class applied to the element, or a function that returns a class based on the component's state. |
| `defaultChecked` | No | `boolean \| undefined` | Whether the switch is initially active. To render a controlled switch, use the `checked` prop instead. |
| `disabled` | No | `boolean \| undefined` | Whether the component should ignore user interaction. |
| `form` | No | `string \| undefined` | Identifies the form that owns the hidden input. Useful when the switch is rendered outside the form. |
| `id` | No | `string \| undefined` | The id of the hidden input element. When `nativeButton` is `true`, the id is applied to the root element. |
| `inputRef` | No | `Ref<HTMLInputElement> \| undefined` | A ref to access the hidden `<input>` element. |
| `name` | No | `string \| undefined` | Identifies the field when a form is submitted. |
| `nativeButton` | No | `boolean \| undefined` | Whether the component renders a native `<button>` element when replacing it via the `render` prop. Set to `true` if the rendered element is a native button. |
| `onCheckedChange` | No | `((checked: boolean, eventDetails: SwitchRoot.ChangeEventDetails) => void) \| undefined` | Event handler called when the switch is activated or deactivated. |
| `readOnly` | No | `boolean \| undefined` | Whether the user should be unable to activate or deactivate the switch. |
| `render` | No | `ReactElement<unknown, string \| JSXElementConstructor<any>> \| ComponentRenderFn<HTMLProps, SwitchRootState> \| undefined` | Allows you to replace the component's HTML element with a different tag, or compose it with another component. Accepts a `ReactElement` or a function that returns the element to render. |
| `required` | No | `boolean \| undefined` | Whether the user must activate the switch before submitting a form. |
| `style` | No | `CSSProperties \| ((state: SwitchRootState) => React.CSSProperties \| undefined) \| undefined` | Style applied to the element, or a function that returns a style object based on the component's state. |
| `uncheckedValue` | No | `string \| undefined` | The value submitted with the form when the switch is off. By default, unchecked switches do not submit any value, matching native checkbox behavior. |
| `value` | No | `string \| undefined` | The value submitted with the form when the switch is on. By default, switch submits the "on" value, matching native checkbox behavior. |
| `variants` | No | `{ readonly size?: import("@fayegram-ai/faye-ui/contracts/visual-variants").VisualVariant<"switch", "size"> \| undefined; readonly tone?: import("@fayegram-ai/faye-ui/contracts/visual-variants").VisualVariant<"switch", "tone"> \| undefined; } \| undefined` | See the usage contract and declaration. |

### Switch.Thumb

| Property | Required | Type | Meaning |
|---|---|---|---|
| `className` | No | `string \| ((state: SwitchThumbState) => string \| undefined) \| undefined` | CSS class applied to the element, or a function that returns a class based on the component's state. |
| `render` | No | `ReactElement<unknown, string \| JSXElementConstructor<any>> \| ComponentRenderFn<HTMLProps, SwitchThumbState> \| undefined` | Allows you to replace the component's HTML element with a different tag, or compose it with another component. Accepts a `ReactElement` or a function that returns the element to render. |
| `style` | No | `CSSProperties \| ((state: SwitchThumbState) => React.CSSProperties \| undefined) \| undefined` | Style applied to the element, or a function that returns a style object based on the component's state. |
| `variants` | No | `{ readonly size?: import("@fayegram-ai/faye-ui/contracts/visual-variants").VisualVariant<"switch", "size"> \| undefined; readonly tone?: import("@fayegram-ai/faye-ui/contracts/visual-variants").VisualVariant<"switch", "tone"> \| undefined; } \| undefined` | See the usage contract and declaration. |

## Defaults and customization

Descriptor defaults: `{"size":"md","tone":"neutral"}`. Parts: `root`, `thumb`. Explicit instance props take precedence over configured defaults.

Use semantic tokens, public part hooks and customization sheets. Keep visual configuration separate from application state.

## State, events and accessibility

For interactive controls, pair a controlled value/open prop with its corresponding change callback; default props initialize uncontrolled state. Keep application validation and submission policy explicit. Name controls with visible labels, name icon-only actions on the button, and preserve focus and dismissal behavior when replacing parts. Use native form names and submit/reset types where supported. See the usage guide for component-specific behavior and live examples.

## Declaration authority

Generated from `packages/faye-ui/dist/controls/switch.d.ts` after the semantic package build. Common native/React attributes are intentionally omitted from property tables. Generic overloads, discriminated unions and complete inherited attributes remain authoritative in installed TypeScript declarations. [React DOM attributes](https://react.dev/reference/react-dom/components/common) and [Base UI component contracts](https://base-ui.com/react/overview/quick-start) describe the inherited foundations.