export type GatewayCredential = {
    kind: 'token';
    value: string;
} | {
    kind: 'password';
    value: string;
};
export declare function createGatewayCredential(kind: GatewayCredential['kind'], value: string | undefined): GatewayCredential | undefined;
export declare function gatewayCredentialAuthorization(credential: GatewayCredential | undefined): string | undefined;