import * as react_jsx_runtime from 'react/jsx-runtime';
import * as React from 'react';
import { Button } from './button.js';
import 'class-variance-authority/types';
import 'class-variance-authority';

type MessageScrollerDefaultScrollPosition = "start" | "end" | "last-anchor";
type MessageScrollerScrollAlign = "start" | "center" | "end" | "nearest";
type MessageScrollerScrollOptions = {
    align?: MessageScrollerScrollAlign;
    behavior?: ScrollBehavior;
    scrollMargin?: number;
};
type MessageScrollerScrollable = {
    /** Content is hidden above — can scroll toward the start. */
    start: boolean;
    /** Content is hidden below — can scroll toward the end. */
    end: boolean;
};
type MessageScrollerVisibilityState = {
    currentAnchorId: string | null;
    visibleMessageIds: string[];
};
declare function useMessageScroller(): {
    scrollToEnd: (options?: MessageScrollerScrollOptions) => boolean;
    scrollToStart: (options?: MessageScrollerScrollOptions) => boolean;
    scrollToMessage: (messageId: string, options?: MessageScrollerScrollOptions) => boolean;
    releaseAutoScroll: () => void;
    scrollable: MessageScrollerScrollable;
    isAtBottom: boolean;
};
declare function useMessageScrollerScrollable(): MessageScrollerScrollable;
declare function useMessageScrollerVisibility(): MessageScrollerVisibilityState;
declare function MessageScrollerProvider({ autoScroll, defaultScrollPosition, scrollEdgeThreshold, scrollPreviousItemPeek, scrollMargin, children, }: {
    autoScroll?: boolean;
    defaultScrollPosition?: MessageScrollerDefaultScrollPosition;
    scrollEdgeThreshold?: number;
    scrollPreviousItemPeek?: number;
    scrollMargin?: number;
    children: React.ReactNode;
}): react_jsx_runtime.JSX.Element;
declare function MessageScroller({ className, ref, ...props }: React.ComponentProps<"div">): react_jsx_runtime.JSX.Element;
declare function MessageScrollerViewport({ className, ref, onScroll, onWheel, onTouchMove, onKeyDown, onPointerDown, preserveScrollOnPrepend, role, "aria-label": ariaLabel, tabIndex, ...props }: React.ComponentProps<"div"> & {
    preserveScrollOnPrepend?: boolean;
}): react_jsx_runtime.JSX.Element;
declare function MessageScrollerContent({ className, children, ref, spacerClassName, ...props }: React.ComponentProps<"div"> & {
    spacerClassName?: string;
}): react_jsx_runtime.JSX.Element;
declare function MessageScrollerItem({ className, scrollAnchor, messageId, children, ...props }: React.ComponentProps<"div"> & {
    scrollAnchor?: boolean;
    messageId?: string;
}): react_jsx_runtime.JSX.Element;
declare function MessageScrollerButton({ direction, behavior, className, children, variant, size, ...props }: React.ComponentProps<"button"> & {
    direction?: "start" | "end";
    behavior?: ScrollBehavior;
    variant?: React.ComponentProps<typeof Button>["variant"];
    size?: React.ComponentProps<typeof Button>["size"];
}): react_jsx_runtime.JSX.Element;

export { MessageScroller, MessageScrollerButton, MessageScrollerContent, type MessageScrollerDefaultScrollPosition, MessageScrollerItem, MessageScrollerProvider, type MessageScrollerScrollAlign, type MessageScrollerScrollOptions, type MessageScrollerScrollable, MessageScrollerViewport, type MessageScrollerVisibilityState, useMessageScroller, useMessageScrollerScrollable, useMessageScrollerVisibility };