import type { VerifiedEvent } from "nostr-tools";
import type { Rumor, SessionState } from "./types";
export interface SessionPreviewCandidate<TContext = unknown> {
    state: SessionState | string;
    chatId?: string;
    context?: TContext;
}
export interface SessionEventPreview<TContext = unknown> {
    outerEvent: VerifiedEvent;
    rumor: Rumor;
    candidate: SessionPreviewCandidate<TContext>;
    candidateIndex: number;
    chatId?: string;
    context?: TContext;
}
export declare function decryptSessionEventPreview<TContext = unknown>(outerEvent: VerifiedEvent, candidates: Iterable<SessionPreviewCandidate<TContext>>): SessionEventPreview<TContext> | null;
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