export declare const GROUP_MIN = 6;
/** Collapses a wholly-replaced run towards its own centre and fades it out. */
export declare function animateGroupExit(elements: HTMLElement[], options: {
    duration: number;
    ease: string;
}): void;
/** The same gesture in reverse, for the run arriving in its place. */
export declare function animateGroupEnter(elements: HTMLElement[], options: {
    duration: number;
    ease: string;
}): void;
/**
 * Maximal stretches of `members` adjacent in `all`. A run broken by a survivor is no
 * replacement — that survivor is right there to move relative to.
 */
export declare function replacedRuns(all: HTMLElement[], members: Set<HTMLElement>): HTMLElement[][];