export declare class Spacer extends HTMLElement {
    private resizeObserver?;
    private intersectionObserver?;
    private recheckHandle?;
    private isZeroSized;
    private growValue;
    private isVertical;
    constructor();
    static get observedAttributes(): string[];
    attributeChangedCallback(name: string, oldValue: string, newValue: string): void;
    connectedCallback(): void;
    disconnectedCallback(): void;
    get grow(): string;
    set grow(value: string);
    private scheduleRecheck;
    private recalculateVisibility;
    private handleSizeChange;
    private updateParticipation;
    get nogap(): boolean;
    set nogap(value: boolean);
}