import { Logger } from 'winston';
export interface AuthenticationResponse {
    token: string;
    refreshToken?: string;
}
export declare function authenticate(logger: Logger, getRefreshToken?: boolean): Promise<AuthenticationResponse | null>;
export declare function authenticateWithRefreshToken(logger: Logger, refreshToken: string): Promise<AuthenticationResponse | null>;
export declare function revokeRefreshToken(logger: Logger, refreshToken: string): Promise<number>;
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