/**
 * JoinRequest content type for Convos join requests.
 *
 * Replaces the plain-text invite slug DM with a structured content type
 * that includes the joiner's profile and optional metadata.
 *
 * Content type: convos.org/join_request:1.0
 * Encoding: JSON (matching iOS JoinRequestCodec)
 *
 * The CLI still sends a plain text slug as well for backward compat
 * with older iOS clients that don't understand the new content type.
 */
import type { ContentTypeId, EncodedContent } from "@xmtp/node-bindings";
import type { ContentCodec } from "@xmtp/content-type-primitives";
import type { DecodedMessage } from "@xmtp/node-sdk";
export declare const ContentTypeJoinRequest: ContentTypeId;
export interface JoinRequestProfile {
    name?: string;
    imageURL?: string;
    memberKind?: string;
}
export interface JoinRequestContent {
    inviteSlug: string;
    profile?: JoinRequestProfile;
    metadata?: Record<string, string>;
}
export declare class JoinRequestCodec implements ContentCodec<JoinRequestContent> {
    get contentType(): ContentTypeId;
    encode(content: JoinRequestContent): EncodedContent;
    decode(content: EncodedContent): JoinRequestContent;
    fallback(content: JoinRequestContent): string | undefined;
    shouldPush(_content: JoinRequestContent): boolean;
}
/**
 * Check if a message is a JoinRequest content type.
 */
export declare function isJoinRequestMessage(message: DecodedMessage): boolean;
/**
 * Extract a JoinRequestContent from a DecodedMessage.
 *
 * When the JoinRequestCodec is registered, message.content is the decoded object.
 * Falls back to raw EncodedContent parsing if needed.
 */
export declare function getJoinRequestContent(message: DecodedMessage): JoinRequestContent | undefined;