import { Nullable } from '../../common/src/utils/types';
export declare const getComputedStyleCached: (element: HTMLElement) => CSSStyleDeclaration;
export declare const convertToPixels: (value: string, unit: string, element: HTMLElement) => number;
export declare const getXY: (element: HTMLElement, event: DragEvent | TouchEvent, fallback?: {
    x: number;
    y: number;
}) => {
    x: number;
    y: number;
};
export declare const extractClientXY: (event: MouseEvent | DragEvent | TouchEvent, fallback?: Nullable<{
    x: number;
    y: number;
}>) => {
    clientX: number;
    clientY: number;
};
export declare const createGracefulProxy: <T extends object>(target: Partial<T>) => T;
export declare const isOverVisibleCanvas: (clientX: number, clientY: number, canvasBb: Nullable<DOMRect>, overlayBb: Nullable<DOMRect>, interactionContainerBb: Nullable<DOMRect>, iframeBounds?: DOMRect) => boolean;