export interface ThumbJellyHost {
    /** Whether the jelly runs at all — off under `prefers-reduced-motion` and on the flat path. */
    isEnabled: () => boolean;
}
/**
 * The slider thumb's jelly — the Radio button-group indicator's motion, mapped
 * onto a slider's events.
 *
 * The indicator deforms from two sources: how fast it travels, and how hard it
 * lands (an overshoot reversal, a slam into the group's end). A slider thumb
 * travels exactly as far as the pointer, so its position is never sprung; what
 * is sprung is the uniform scale — up to `heldScale` on grab, back to 1 on
 * release, on the indicator's own spring — while the stretch reads the pointer
 * velocity and the landings come from direction reversals, the track ends and
 * a fast release. Every frame goes through `jellyScale`, shared with the
 * indicator, and every number is `JELLY`'s.
 */
export declare function useThumbJelly(host: ThumbJellyHost): {
    scaleX: import('vue').Ref<number, number>;
    scaleY: import('vue').Ref<number, number>;
    active: import('vue').Ref<boolean, boolean>;
    press: () => void;
    move: (velocity: number, atEnd: boolean) => void;
    release: () => void;
    stop: () => void;
};