import { type MessageWithMetadata } from "@cline/shared";
import { z } from "zod";
export declare const SessionCompactionStateSchema: z.ZodObject<{
    version: z.ZodLiteral<1>;
    updated_at: z.ZodString;
    conversation_id: z.ZodOptional<z.ZodString>;
    source_message_count: z.ZodNumber;
    source_prefix_hash: z.ZodOptional<z.ZodString>;
    source_last_message_key: z.ZodOptional<z.ZodString>;
    messages: z.ZodArray<z.ZodCustom<MessageWithMetadata, MessageWithMetadata>>;
    system_prompt: z.ZodOptional<z.ZodString>;
}, z.core.$strip>;
export type SessionCompactionState = z.infer<typeof SessionCompactionStateSchema>;
export declare function createSessionCompactionState(input: {
    sourceMessages: readonly MessageWithMetadata[];
    compactedMessages: readonly MessageWithMetadata[];
    conversationId?: string;
    systemPrompt?: string;
    updatedAt?: string;
}): SessionCompactionState;
export declare function projectSessionCompactionState(state: SessionCompactionState, sourceMessages: readonly MessageWithMetadata[]): MessageWithMetadata[] | undefined;
export declare function parseSessionCompactionState(value: unknown): SessionCompactionState | undefined;