import AdmZip from 'adm-zip';
import { GTFSAsyncIterableFeed, GTFSIterableFeed } from '../../feed/iterable.js';
import type { GTFSFeedBase } from '../../feed/base.d.ts';
import type { GTFSLoadedFeed } from '../../feed/loaded.d.ts';
import type { GTFSFileInfo } from '../../file-info.d.ts';
import type { GTFSAsyncFileRecords, GTFSFileRecords } from '../../types.d.ts';
/**
 * Feed Reader Base
 */
export declare abstract class GTFSFeedReaderBase<RecordsType extends GTFSFileRecords | GTFSAsyncFileRecords, FeedType extends GTFSFeedBase<RecordsType> | Promise<GTFSFeedBase<RecordsType>>> {
    /**
     * Get iterable feed.
     * @returns Iterable Feed
     */
    protected getFeedSync(): GTFSIterableFeed;
    /**
     * Get async iterable feed.
     * @returns Async iterable feed
     */
    protected getFeedAsync(): GTFSAsyncIterableFeed;
    /**
     * Load iterable feed.
     * @returns Loaded feed
     */
    protected loadFeedSync(): GTFSLoadedFeed;
    /**
     * Get async iterable feed and return promise of loaded feed.
     * @returns Loaded feed promise
     */
    protected loadFeedAsync(): Promise<GTFSLoadedFeed>;
    /**
     * Get records from file information.
     * @param fileInfo File information
     * @returns Records or undefined if files does not exist
     */
    protected abstract getRecords(fileInfo: GTFSFileInfo): RecordsType | undefined;
    /**
     * Get iterable feed.
     */
    abstract getFeed(): FeedType;
    /**
     * Load feed into memory.
     */
    abstract loadFeed(): GTFSLoadedFeed | Promise<GTFSLoadedFeed>;
    /**
     * Get file records from zip file entry.
     * @param info File information
     * @param entry AdmZip entry
     * @returns File records
     */
    protected static getSyncRecordsFromZipEntry(info: GTFSFileInfo, entry: AdmZip.IZipEntry): GTFSFileRecords;
    /**
     * Get async file records from zip file entry.
     * @param info File information
     * @param entry AdmZip entry
     * @returns Async file records
     */
    protected static getAsyncRecordsFromZipEntry(info: GTFSFileInfo, entry: AdmZip.IZipEntry): GTFSAsyncFileRecords;
}
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