import { HttpEvent, HttpHandler, HttpInterceptor, HttpRequest } from '@angular/common/http';
import { ApplicationRef } from '@angular/core';
import { TransferState } from '@angular/platform-browser';
import { Observable } from 'rxjs';
import { TransferHttpCacheConfigService } from '../transfer-http-cache-config/transfer-http-cache-config.service';
export declare class TransferHttpCacheInterceptor implements HttpInterceptor {
    private _appRef;
    private _transferState;
    private _platformId;
    private _configService;
    private _isCacheActivated;
    private _id;
    private readonly _serverStateDataStoreKey;
    private readonly _lastIdStoreKey;
    private readonly _isCacheActivatedStoreKey;
    /**
     * Class constructor
     */
    constructor(_appRef: ApplicationRef, _transferState: TransferState, _platformId: any, _configService: TransferHttpCacheConfigService);
    /**
     * Initialize cache process
     */
    private _initCacheProcess;
    /**
     * Interceptor process
     */
    intercept(req: HttpRequest<any>, next: HttpHandler): Observable<HttpEvent<any>>;
    /**
     * Function to clean all data in server state
     */
    private _cleanServerState;
    /**
     * Transfer state process
     */
    private _transferStateProcess;
    /**
     * Creates transfer state key's store
     */
    private _createKey;
    /**
     * Function to get state data and create client key for current request
     */
    private _clientKey;
    /**
     * Function to get last id from server
     */
    private _getLastId;
    /**
     * Function to get server state data
     */
    private _getServerStateData;
    /**
     * Function to create server key and store state data for current request
     */
    private _serverKey;
    /**
     * Function to store server state data
     */
    private _storeServerStateData;
    /**
     * Process when key exists in transfer state
     */
    private _hasKeyProcess;
    /**
     * Process when key doesn't exist in transfer state
     */
    private _hasNotKeyProcess;
    /**
     * Creates Headers Map
     */
    private _getHeadersMap;
    /**
     * Function to create sha256 hash
     */
    private _createHash;
    /**
     * Returns HttpRequest with value of header inside url & urlWithParams
     */
    private _replaceWithHeader;
    /**
     * Replace url with header value
     */
    private _formatUrlWithHeaderValue;
    /**
     * Returns the good request object to create hash
     */
    private _requestFormatted;
}