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 MessageScrollerContextValue = {
    autoScroll: boolean;
    isAtBottom: boolean;
    scrollPreviousItemPeek: number;
    setViewportEl: (el: HTMLDivElement | null) => void;
    scrollToEnd: (behavior?: ScrollBehavior) => void;
    notifyContentChange: () => void;
    registerScrollAnchor: (el: HTMLElement | null) => void;
    onViewportScroll: () => void;
};
/** Headless scroll state for a conversation transcript. */
declare function useMessageScroller(): MessageScrollerContextValue;
/** `true` when the viewport is not pinned to the latest content. */
declare function useMessageScrollerScrollable(): boolean;
/** `true` when the jump-to-latest affordance should be visible. */
declare function useMessageScrollerVisibility(): boolean;
declare function MessageScrollerProvider({ autoScroll, scrollPreviousItemPeek, children, }: {
    autoScroll?: boolean;
    scrollPreviousItemPeek?: number;
    children: React.ReactNode;
}): react_jsx_runtime.JSX.Element;
declare function MessageScroller({ className, ...props }: React.ComponentProps<"div">): react_jsx_runtime.JSX.Element;
declare function MessageScrollerViewport({ className, ref, onScroll, ...props }: React.ComponentProps<"div">): react_jsx_runtime.JSX.Element;
declare function MessageScrollerContent({ className, children, ...props }: React.ComponentProps<"div">): react_jsx_runtime.JSX.Element;
declare function MessageScrollerItem({ className, scrollAnchor, children, ...props }: React.ComponentProps<"div"> & {
    scrollAnchor?: boolean;
}): react_jsx_runtime.JSX.Element;
declare function MessageScrollerButton({ direction, className, children, variant, size, ...props }: React.ComponentProps<"button"> & {
    direction?: "start" | "end";
    variant?: React.ComponentProps<typeof Button>["variant"];
    size?: React.ComponentProps<typeof Button>["size"];
}): react_jsx_runtime.JSX.Element;

export { MessageScroller, MessageScrollerButton, MessageScrollerContent, MessageScrollerItem, MessageScrollerProvider, MessageScrollerViewport, useMessageScroller, useMessageScrollerScrollable, useMessageScrollerVisibility };