/**
 * Represents the relationship between user A and user B. For incoming_link, user A
 * is the current user; for outgoing_link, user B is the current user
 */
export declare type LinkStateUnion = LinkStateNone | LinkStateKnowsPhoneNumber | LinkStateIsContact;
/** The phone number of user A is not known to user B */
export interface LinkStateNone {
    _: 'linkStateNone';
}
/**
 * The phone number of user A is known but that number has not been saved to the contact
 * list of user B
 */
export interface LinkStateKnowsPhoneNumber {
    _: 'linkStateKnowsPhoneNumber';
}
/** The phone number of user A has been saved to the contact list of user B */
export interface LinkStateIsContact {
    _: 'linkStateIsContact';
}