import { ResolutionListener } from './resolution-listener';
/**
 * An asyncronous resource that can be resolved.
 */
export declare abstract class AsyncResource {
    /** Whether this resource is resolved */
    private resolved;
    /** Whether this resource is resolving */
    private resolving;
    /** Array of resolution listeners */
    private resolutionListeners;
    /**
     * Create a new AsyncResource
     *
     * @param resolve whether to resolve the resource now, defaults to false
     */
    constructor(resolve: boolean);
    /** @returns whether this resource is resolved */
    isResolved(): boolean;
    /** @returns whether this resource is resolving */
    isResolving(): boolean;
    /**
     * Register a listener that will emit when this resource has been resolved sucessfully.
     * @param listener the listener for when this resource has been resolved
     */
    registerResolutionListener(listener: ResolutionListener): void;
    /**
     * Resolve this resource.
     *
     * @returns a promise that completes once the resource is resolved
     */
    abstract resolve(): Promise<void>;
    /**
     * Setter for `resolved`.
     * @param resolved whether this resource is resolved
     */
    protected setResolved(resolved: boolean): void;
    /**
     * Setter for `resolving`.
     * @param resolving whether the resource is resolving
     */
    protected setResolving(resolving: boolean): void;
}