import * as React from 'react';
interface FeedSurfaceProps extends React.HTMLAttributes<HTMLDivElement> {
    rootRef: React.ForwardedRef<HTMLDivElement>;
    itemSlot: string;
}
interface Snapshot {
    scroll: HTMLElement;
    visible: boolean;
    anchors: {
        node: HTMLElement;
        top: number;
    }[];
    focused: HTMLElement | null;
    focusedRow: HTMLElement | null;
    rowIndex: number;
    disclosures: {
        node: HTMLElement;
        hidden: boolean;
    }[];
}
declare const FeedCoordinator: React.Context<FeedSurface | null>;
/** No DOM wrapper: descendant-owned rows participate in the feed commit. */
export declare class FeedRow extends React.Component<React.PropsWithChildren> {
    static contextType: React.Context<FeedSurface | null>;
    context: React.ContextType<typeof FeedCoordinator>;
    componentDidMount(): void;
    getSnapshotBeforeUpdate(): null;
    componentDidUpdate(): void;
    componentWillUnmount(): void;
    render(): React.JSX.Element;
}
/** Internal feed boundary: snapshot before React removes or resizes keyed rows. */
export declare class FeedSurface extends React.Component<FeedSurfaceProps> {
    private root;
    private seen;
    private arrivals;
    private media;
    private pending;
    private scheduled;
    private mounted;
    captureCommit(): void;
    scheduleCommit(): void;
    private rows;
    private forwardedRef;
    private setRoot;
    private rootCallback;
    private reduce;
    componentDidMount(): void;
    getSnapshotBeforeUpdate(): Snapshot | null;
    componentDidUpdate(_props: FeedSurfaceProps, _state: unknown, snapshot: Snapshot | null): void;
    private commit;
    private fade;
    componentWillUnmount(): void;
    render(): React.JSX.Element;
}
export {};