/**
 * Animation duration for the slide-in animation in milliseconds.
 * Uses MFUI design token: `durations.mfui.transition.duration.split-view.in` (350ms)
 */
export declare const ANIMATION_DURATION_IN_MS = 350;
/**
 * Animation duration for the slide-out animation in milliseconds.
 * Uses MFUI design token: `durations.mfui.transition.duration.split-view.out` (200ms)
 */
export declare const ANIMATION_DURATION_OUT_MS = 200;
/**
 * Keyboard step size in pixels for resizing via arrow keys.
 * Uses MFUI design token: `sizes.mfui.layout.grid.scale.horizontal.1` (14px)
 */
export declare const KEYBOARD_STEP_PX = 14;
/**
 * Minimum size difference in pixels required to trigger an animation.
 * If the difference between start and target sizes is less than this threshold,
 * the animation is skipped and the size is set directly.
 */
export declare const ANIMATION_SIZE_THRESHOLD_PX = 1;
/**
 * Easing function for slide-in and slide-out animations.
 * Approximates `cubic-bezier(0.5, 0, 0.25, 1)` from MFUI design tokens.
 *
 * @param t - The animation progress from 0 to 1
 *
 * @returns The eased progress value (0 to 1)
 */
export declare const animationEasing: (t: number) => number;