import { type ExpirationOptions, type ReceiptType, type Rumor } from "./types";
export declare const DUMMY_INNER_PUBKEY = "0000000000000000000000000000000000000000000000000000000000000000";
export interface RumorBuildOptions {
    pubkey?: string;
    createdAt?: number;
    nowMs?: number;
    tags?: string[][];
    expiration?: ExpirationOptions | null;
    ensureMsTag?: boolean;
}
export interface RumorBuildInput extends RumorBuildOptions {
    kind: number;
    content?: string;
}
export declare function expirationTagForOptions(options: ExpirationOptions, nowSeconds: number): string[] | undefined;
export declare function appendExpirationTag(tags: string[][], options: ExpirationOptions, nowSeconds: number): void;
export declare function ensureMsTag(tags: string[][], ms: number): string[][];
export declare function ensureRecipientTag(tags: string[][], recipientPubkey: string): string[][];
export declare function buildRumorEvent(input: RumorBuildInput): Rumor;
export declare function buildDirectRumorEvent(authorPubkey: string, recipientPubkey: string, kind: number, content: string, tags?: string[][], options?: Omit<RumorBuildOptions, "pubkey" | "tags">): Rumor;
export declare function buildTextRumor(text: string, options?: RumorBuildOptions): Rumor;
export declare function buildReplyRumor(text: string, replyTo: string, options?: RumorBuildOptions): Rumor;
export declare function buildReactionRumor(messageId: string, emoji: string, options?: RumorBuildOptions): Rumor;
export declare function buildReceiptRumor(receiptType: ReceiptType, messageIds: string[], options?: RumorBuildOptions): Rumor;
export declare function buildTypingRumor(options?: RumorBuildOptions): Rumor;
export declare function eventReferenceTag(messageId: string): string[];
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