import { type Message } from './session-jsonl-types.js';
export declare class SessionManager {
    private baseDir;
    private states;
    private static readonly MAX_CACHED_SESSIONS;
    private static readonly MAX_CACHED_SESSIONS_BYTES;
    private sessionLastAccess;
    private sessionApproxBytes;
    private loadingPromises;
    constructor(baseDir?: string);
    private estimateStateBytes;
    private touchSessionKey;
    private evictSessionCacheIfNeeded;
    private getPath;
    private getLegacyPath;
    private createHeader;
    load(sessionKey: string): Promise<Message[]>;
    append(sessionKey: string, message: Message): Promise<void>;
    truncateTrailingAssistant(sessionKey: string): Promise<boolean>;
    truncateForRegenerate(sessionKey: string, anchorProcessedUserContent: string): Promise<boolean>;
    appendCompaction(sessionKey: string, summary: string, firstKeptEntryId: string, tokensBefore: number): Promise<void>;
    resolveMessageEntryId(sessionKey: string, message: Message): string | undefined;
    get(sessionKey: string): Message[];
    clear(sessionKey: string): Promise<void>;
    list(): Promise<string[]>;
    private ensureState;
    private loadAndCacheState;
    private persistEntry;
}
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