export interface ContextWindowState {
    usedTokens: number;
    maxTokens: number;
    sessionId: string;
}
export interface ContextWindowThresholds {
    warningPct: number;
    criticalPct: number;
}
export type ContextWindowAction = "none" | "warn" | "recover";
export interface ContextWindowCheckResult {
    action: ContextWindowAction;
    usagePct: number;
    message?: string;
}
export declare function checkContextWindow(state: ContextWindowState, thresholds?: ContextWindowThresholds): ContextWindowCheckResult;
export declare function createContextWindowMonitor(thresholds?: ContextWindowThresholds): {
    check: (state: ContextWindowState) => ContextWindowCheckResult;
};