import { QueryEngineEndpoint } from '../../QueryEngineConfig/types';
export declare const signIn: (queryEngineEndpoint: QueryEngineEndpoint, queryEngineAccessToken: string, abortSignal?: AbortSignal | undefined) => Promise<boolean>;
export declare const signInWithEmailAndPassword: (queryEngineEndpoint: QueryEngineEndpoint, email: string, password: string, abortSignal?: AbortSignal | undefined) => Promise<{
    success: true;
} | {
    success: false;
    message: string;
}>;
