import type { ProviderService } from '@superfaceai/ast';
export interface IServiceSelector {
    getUrl(serviceId?: string): string | undefined;
}
export declare class ServiceSelector implements IServiceSelector {
    private readonly serviceUrls;
    private readonly defaultService?;
    constructor(services: ProviderService[], defaultService?: string);
    static empty(): ServiceSelector;
    static withDefaultUrl(baseUrl: string): ServiceSelector;
    /**
     * Gets the url of `serviceId`. If `serviceId` is undefined returns url of the default service, or undefined if default service is also undefined.
     */
    getUrl(serviceId?: string): string | undefined;
}