import type { Client } from '../client/Client';
import { Collection } from '../util/index';
export declare abstract class BaseManager<Holds extends {
    id: string;
}, R = unknown> {
    protected readonly client: Client;
    readonly cache: Collection<string, Holds>;
    constructor(client: Client);
    _add(raw: R): Holds;
    _remove(id: string): void;
    abstract readonly holds: (new (...args: any[]) => Holds) | null;
    resolve(resolvable: Holds): Holds | null;
    resolve(resolvable: string | R): Holds | null;
    resolve(resolvable: string | R | Holds): Holds | null;
    resolveId(resolvable: string | Holds | R): string | null;
    valueOf(): this['cache'];
}