import { Krite } from '../krite';
import { IDataSource } from '../types';
export declare class SourcePool {
    private krite;
    list: string[];
    private sources;
    private promised;
    constructor(krite: Krite);
    addSources: (sources: {
        [index: string]: IDataSource;
    }) => void;
    add: <T extends IDataSource>(name: string, source: T) => T;
    get: <T extends IDataSource>(name: string) => T;
    try: <T>(name: string) => T | undefined;
    promise: <T>(name: string) => Promise<T>;
    has: (name: string) => boolean;
    private resolvePromises;
}