/**
 * Utilitários para detecção e manipulação de breakpoints responsivos.
 *
 * As media queries são compartilhadas por janela para que várias instâncias de
 * headers e subcomponentes não instalem o mesmo conjunto de listeners.
 */
export declare const BREAKPOINTS: {
    readonly X_SMALL: "x-small";
    readonly SMALL: "small";
    readonly MEDIUM: "medium";
    readonly LARGE: "large";
    readonly X_LARGE: "x-large";
};
export type Breakpoint = (typeof BREAKPOINTS)[keyof typeof BREAKPOINTS];
type BreakpointRangeType = 'above' | 'below' | 'from' | 'until' | 'only';
type BreakpointSettings = {
    name: Breakpoint;
    query: string;
    minWidth: number;
    maxWidth?: number;
};
export declare class BreakpointObserver {
    private readonly ownerWindow;
    private readonly shared;
    private readonly subscriptions;
    getCurrentBreakpoint(): Breakpoint | null;
    getBreakpointSettings(breakpoint: Breakpoint): BreakpointSettings | undefined;
    getBreakpointQuery(breakpoint: Breakpoint): string | undefined;
    getAllBreakpoints(): Breakpoint[];
    static getBreakpoints(type: BreakpointRangeType, breakpoint: Breakpoint): Breakpoint[];
    subscribe(callback: (breakpoint: Breakpoint) => void): void;
    unsubscribe(callback: (breakpoint: Breakpoint) => void): void;
    destroy(): void;
}
export {};