/**
 * Calculate the scale ratio applied to the element in the horizontal/vertical axis.
 *
 * @param {HTMLElement} element The element to measure.
 * @param {'horizontal'|'vertical'} [axis='horizontal'] The axis to inspect.
 * @returns {number}
 */
export declare function getElementScaleFactor(element: HTMLElement, axis?: 'horizontal' | 'vertical'): number;
/**
 * Converts visual pointer delta into unscaled delta.
 *
 * @param {number} visualDelta Pointer delta in visual coordinates.
 * @param {number} scaleFactor Element scale factor.
 * @returns {number}
 */
export declare function normalizeVisualDelta(visualDelta: number, scaleFactor: number): number;
/**
 * Checks if the resize handle positioning should be skipped.
 *
 * @param {{ parentNode: ParentNode | null }} header The header element to position the handle against.
 * @param {number} resizeClickCount The resize handle click count.
 * @returns {boolean}
 */
export declare function shouldSkipResizeHandlePositioning(header: {
    parentNode: ParentNode | null;
}, resizeClickCount: number): boolean;
/**
 * Checks if resize handle position should be refreshed after auto-size.
 *
 * @param {{ parentNode: ParentNode | null } | null} header The header element.
 * @param {number} resizeClickCount The resize handle click count.
 * @returns {boolean}
 */
export declare function shouldRefreshHandleAfterAutoResize(header: {
    parentNode: ParentNode | null;
} | null, resizeClickCount: number): boolean;