type PulseAnimationOptions = {
    step?: number;
    frequency?: number;
    on_tick?: () => void;
    reset_when_inactive?: boolean;
};
type PulseAnimation = {
    readonly time: number;
    readonly unit: number;
};
export declare function create_pulse_animation(active: () => boolean, options?: PulseAnimationOptions): PulseAnimation;
export {};