import { ChatUserInfo } from './ChatUserInfo';
/**
 * The Contact class is used to store the information of a contact.
 */
export declare class ChatContact {
    /**
     * The user id of the contact.
     */
    userId: string;
    /**
     * The remark of the contact.
     */
    remark: string;
    /**
     * The user attributes of the contact. See {@link ChatUserInfo}.
     */
    userInfo?: ChatUserInfo;
    /**
     * The Unix timestamp when the contact is added, in milliseconds.
     */
    addTimestamp?: number;
    constructor(params: {
        userId: string;
        remark: string;
        userInfo?: ChatUserInfo;
        addTimestamp?: number;
    });
}
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