import React from 'react';
import { type ComposableProps } from '../../../lib/slot';
export interface ButtonSpinnerProps extends ComposableProps<'span'> {
    /** Icon size (defaults to 18) */
    size?: number;
}
/**
 * ButtonSpinner - Loading spinner for Button loading state
 *
 * Renders an animated spinner icon for indicating loading states.
 *
 * @public
 *
 * @example
 * ```tsx
 * <Button loading>
 *   <ButtonSpinner />
 *   <ButtonText>Saving...</ButtonText>
 * </Button>
 * ```
 *
 * @remarks
 * - Supports `asChild` for custom spinner elements
 * - Includes aria-label for accessibility
 * - Automatically uses rotating animation
 */
export declare const ButtonSpinner: React.ForwardRefExoticComponent<ButtonSpinnerProps & React.RefAttributes<HTMLSpanElement>>;
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