import type { OpenClawConfig } from "../../config/config.js";
import { type SessionEntry } from "../../config/sessions.js";
/** Drain queued system events, format as `System:` lines, return the block (or undefined). */
export declare function drainFormattedSystemEvents(params: {
    cfg: OpenClawConfig;
    sessionKey: string;
    isMainSession: boolean;
    isNewSession: boolean;
}): Promise<string | undefined>;
export declare function ensureSessionStarted(params: {
    sessionEntry?: SessionEntry;
    sessionStore?: Record<string, SessionEntry>;
    sessionKey?: string;
    storePath?: string;
    sessionId?: string;
    isFirstTurnInSession: boolean;
    cfg: OpenClawConfig;
}): Promise<{
    sessionEntry?: SessionEntry;
    systemSent: boolean;
}>;
export declare function incrementCompactionCount(params: {
    sessionEntry?: SessionEntry;
    sessionStore?: Record<string, SessionEntry>;
    sessionKey?: string;
    storePath?: string;
    now?: number;
    /** Token count after compaction - if provided, updates session token counts */
    tokensAfter?: number;
}): Promise<number | undefined>;