import { BigQuery } from '@google-cloud/bigquery';
import { firestore } from 'firebase-admin';
import { Logger } from 'winston';
import { Config } from '../core/config';
export default class ETLService {
    private readonly logger;
    private readonly config;
    private readonly bigquery;
    private readonly store;
    constructor(logger: Logger, config: Config, bigquery: BigQuery, store: firestore.Firestore);
    trasnformFirebaseEvents(startDate: string, endDate: string): Promise<void>;
}