/**
 * Checks if an element is within a container, handling both Shadow DOM and Light DOM.
 *
 * @param element - The element to check
 * @param shadowRoot - The shadow root to check within
 * @param lightDomContainer - The light DOM container (for slotted elements)
 * @returns true if element is in shadow DOM or light DOM container
 */
export declare function isElementInContainer(element: Element | null, shadowRoot: ShadowRoot | null, lightDomContainer?: HTMLElement): boolean;
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