export type RectTuple = [number, number, number, number];
export interface SerializedLayout {
    rectangles: Record<string, RectTuple>;
    totalHeight: number;
    containsNoTransferables?: true;
    maxHeightReached: boolean;
}
export interface Rectangle<T> {
    id: string;
    l: number;
    r: number;
    top: number | null;
    h: number;
    originalHeight: number;
    data?: T;
}
export interface BaseLayout<T> {
    addRect(id: string, left: number, right: number, height: number, data?: unknown): number | null;
    collides(rect: Rectangle<T>, top: number): boolean;
    addRectToBitmap(rect: Rectangle<T>, data: unknown): void;
    getRectangles(): Map<string, RectTuple>;
    discardRange(left: number, right: number): void;
    serializeRegion(region: {
        start: number;
        end: number;
    }): SerializedLayout;
    getTotalHeight(): number;
    maxHeightReached: boolean;
    toJSON(): SerializedLayout;
}