import type { ContentBlock, PruneStats, Session } from '../types.js';
export declare const MIN_TEXT_LENGTH = 50;
export declare const SYSTEM_TAGS: readonly ["ide_selection", "ide_opened_file", "system-reminder"];
export declare const isToolBlock: (block: ContentBlock) => boolean;
export declare const textLength: (blocks: ContentBlock[]) => number;
export declare const hasContent: (parsed: {
    type?: string;
    message?: {
        content?: unknown[];
    };
}) => boolean;
export declare const analyze: (session: Session) => Promise<PruneStats>;