/// <reference types="node" />
import * as stream from 'stream';
import * as argparse from 'argparse';
import { NLP_URL, THINGPEDIA_URL } from '../../lib/config';
export declare function maybeCreateReadStream(filename: string): stream.Readable;
export declare function readAllLines(files: stream.Readable[], separator?: string): stream.Readable;
export declare class ActionSetFlag extends argparse.Action {
    'const': boolean;
    call(parser: argparse.ArgumentParser, namespace: any, values: string[]): void;
}
export declare function getConfig<T>(key: string, _default?: T): Promise<string | T | undefined>;
export { THINGPEDIA_URL as DEFAULT_THINGPEDIA_URL, NLP_URL as DEFAULT_NLP_URL };