import React from 'react';
import { type ComposableProps } from '../../../lib/slot';
export interface AvatarFallbackProps extends ComposableProps<'span'> {
    /**
     * Fallback content (typically initials or icon)
     */
    children?: React.ReactNode;
}
/**
 * AvatarFallback Component
 *
 * A composable component for displaying fallback content in an Avatar when image fails to load.
 * Typically used within Avatar.
 *
 * @public
 *
 * @example
 * ```tsx
 * <Avatar size="md">
 *   <AvatarImage src="/avatar.jpg" alt="User" />
 *   <AvatarFallback>JD</AvatarFallback>
 * </Avatar>
 * ```
 *
 * @remarks
 * - Wraps the HTML `<span>` element by default.
 * - Supports `asChild` prop to merge props with a custom child element.
 * - Automatically shown when AvatarImage fails to load.
 */
export declare const AvatarFallback: React.ForwardRefExoticComponent<AvatarFallbackProps & React.RefAttributes<HTMLSpanElement>>;
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