# @fayegram-ai/faye-ui/overlays/popper

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

## Import

```tsx
import { Popper } from '@fayegram-ai/faye-ui/overlays/popper';
```

[Usage and behavior guide](/docs/floating/) · [API JSON](/api/packages/overlays/popper.json)

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

## Public exports

| Name | Kind | Resolved declaration type |
|---|---|---|
| `Popper` | value | `({ open, anchor, placement, strategy, distance, collisionPadding, portalled, container, onPositionError, style, className, children, ...props }: PopperProps) => import("react").JSX.Element \| null` |
| `PopperProps` | type | `PopperProps` |

## Popper

Positioning only: no implicit role, focus trap, dismissal, or modal semantics.

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.

### Properties

| Property | Required | Type | Meaning |
|---|---|---|---|
| `anchor` | Yes | `ReferenceElement \| null` | See the usage contract and declaration. |
| `collisionPadding` | No | `number \| undefined` | See the usage contract and declaration. |
| `container` | No | `HTMLElement \| ShadowRoot \| undefined` | See the usage contract and declaration. |
| `distance` | No | `number \| undefined` | See the usage contract and declaration. |
| `onPositionError` | No | `((error: unknown) => void) \| undefined` | See the usage contract and declaration. |
| `open` | Yes | `boolean` | See the usage contract and declaration. |
| `placement` | No | `Placement \| undefined` | See the usage contract and declaration. |
| `portalled` | No | `boolean \| undefined` | See the usage contract and declaration. |
| `strategy` | No | `Strategy \| undefined` | See the usage contract and declaration. |



## Defaults and customization

Descriptor defaults: `{}`. Parts: `root`. 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/overlays/popper.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.