import { type Signal } from '@angular/core';
import { Breakpoints, MaybeSignalOrGetter, ObserveBreakpointsOptions } from './types';
/**
 * **@deprecated** Use `injectBreakpoints` instead.
 *
 * This function will be removed in version `4.0.0`.
 *
 * Reactive viewport breakpoints.
 *
 * @param breakpoints
 * @param options
 */
export declare function observeBreakpoints<K extends string>(breakpoints: Breakpoints<K>, options?: ObserveBreakpointsOptions): Record<K, Signal<boolean>> & {
    greaterOrEqual: (k: MaybeSignalOrGetter<K>) => Signal<boolean>;
    smallerOrEqual: (k: MaybeSignalOrGetter<K>) => Signal<boolean>;
    greater(k: MaybeSignalOrGetter<K>): Signal<boolean>;
    smaller(k: MaybeSignalOrGetter<K>): Signal<boolean>;
    between(a: MaybeSignalOrGetter<K>, b: MaybeSignalOrGetter<K>): Signal<boolean>;
    isGreater(k: MaybeSignalOrGetter<K>): boolean;
    isGreaterOrEqual(k: MaybeSignalOrGetter<K>): boolean;
    isSmaller(k: MaybeSignalOrGetter<K>): boolean;
    isSmallerOrEqual(k: MaybeSignalOrGetter<K>): boolean;
    isInBetween(a: MaybeSignalOrGetter<K>, b: MaybeSignalOrGetter<K>): boolean;
    current: () => Signal<string[]>;
    active(): Signal<string>;
};