import { IProvider } from './provider';
import { IRequestContext } from "../pipeline/common";
export declare class ProviderFactory {
    maxPoolSize: number;
    private pool;
    constructor(maxPoolSize?: number);
    private addToPool(context, key, item);
    private getFromPool(key);
    getProvider(context: IRequestContext, tenant?: string, providerName?: string): IProvider<any>;
}