export type MergeApiParams = {
    sourceEmail: string | null;
    sourceUserId: string | null;
    destinationEmail: string | null;
    destinationUserId: string | null;
};
export declare class UnknownUserMerge {
    /**
     * Merge an unknown user (identified by userId only) into a known user
     */
    mergeUnknownUser(unknownUserId: string, destinationUserId: string | null, destinationEmail: string | null): Promise<void>;
    mergeUser(sourceUserId: string | null, sourceEmail: string | null, destinationUserId: string | null, destinationEmail: string | null): Promise<void>;
    private callMergeApi;
}