import { BehaviorSubject } from 'rxjs';
declare type ID = string | number;
declare type QueueItem<T> = T & {
    id: ID;
};
declare type QueueDef<T> = Record<ID, QueueItem<T>>;
export declare class Queue<T> extends BehaviorSubject<QueueDef<T>> {
    readonly sortFn?: ((a: T, b: T) => number) | undefined;
    value$: import("rxjs").Observable<QueueItem<T>[]>;
    current$: import("rxjs").Observable<T & {
        id: ID;
    }>;
    constructor(sortFn?: ((a: T, b: T) => number) | undefined);
    add(value: Omit<QueueItem<T>, 'id'> & {
        id?: ID;
    }, override?: boolean): QueueItem<T>;
    remove(value: QueueItem<T>): QueueItem<T>;
    private sort;
}
export {};
//# sourceMappingURL=queue.d.ts.map