import { IHeadersFactory } from './interfaces/iHeadersFactory';
export declare class HeadersFactory implements IHeadersFactory {
    private static factoryInstance;
    private constructor();
    static instance(): HeadersFactory;
    authorizationHeader(accessToken: string): {
        Authorization: string;
    };
    authAndUrlEncodedHeader(accessToken: string): {
        Authorization: string;
        'content-type': string;
    };
}