/**
 * Hybrid input serializer for pi-omni-compact.
 *
 * Converts compaction and branch summarization event data
 * into a structured text format combining conversation and metadata.
 */
import type { AgentMessage } from "@mariozechner/pi-agent-core";
import { type FileOperations, type SessionEntry } from "@mariozechner/pi-coding-agent";
import type { SessionAnalysis } from "./session-analysis.js";
/** Subset of CompactionPreparation needed for serialization */
interface CompactionInput {
    messagesToSummarize: AgentMessage[];
    turnPrefixMessages: AgentMessage[];
    isSplitTurn: boolean;
    tokensBefore: number;
    previousSummary?: string;
    fileOps: FileOperations;
    customInstructions?: string;
    sessionAnalysis?: SessionAnalysis;
}
/**
 * Serialize compaction preparation data into hybrid input format.
 */
export declare function serializeCompactionInput(preparation: CompactionInput): string;
/**
 * Serialize branch entries into hybrid input format for branch summarization.
 */
export declare function serializeBranchInput(entriesToSummarize: SessionEntry[], sessionAnalysis?: SessionAnalysis): string;
export {};
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