import { ContentTypeId, ContentCodec, EncodedContent } from '@xmtp/content-type-primitives';

declare const ContentTypeReaction: ContentTypeId;
type Reaction = {
    /**
     * The message ID for the message that is being reacted to
     */
    reference: string;
    /**
     * The inbox ID of the user who sent the message that is being reacted to
     *
     * This only applies to group messages
     */
    referenceInboxId?: string;
    /**
     * The action of the reaction
     */
    action: "added" | "removed";
    /**
     * The content of the reaction
     */
    content: string;
    /**
     * The schema of the content to provide guidance on how to display it
     */
    schema: "unicode" | "shortcode" | "custom";
};
type LegacyReactionParameters = Pick<Reaction, "action" | "reference" | "schema"> & {
    encoding: "UTF-8";
};
declare class ReactionCodec implements ContentCodec<Reaction, LegacyReactionParameters | Record<string, never>> {
    get contentType(): ContentTypeId;
    encode(reaction: Reaction): {
        type: ContentTypeId;
        parameters: {};
        content: Uint8Array<ArrayBufferLike>;
    };
    decode(encodedContent: EncodedContent<LegacyReactionParameters>): Reaction;
    fallback(content: Reaction): string | undefined;
    shouldPush(): boolean;
}

export { ContentTypeReaction, type LegacyReactionParameters, type Reaction, ReactionCodec };