/**
 * Shared easing for terminal UI motion (toasts, task pane, …).
 * Discrete row steps + ease curves read as “smooth” in a TUI.
 */
export declare function clamp01(t: number): number;
/** easeOutCubic — quick start, soft settle (enter). */
export declare function easeOutCubic(t: number): number;
/** easeInCubic — soft start into exit. */
export declare function easeInCubic(t: number): number;