import type { ChatMessage } from "../types.js";
export declare const CATASTROPHIC_SUMMARY_MIN_CHARS = 120;
export declare const CATASTROPHIC_BEFORE_TOKENS_MIN = 8000;
export declare const CATASTROPHIC_AFTER_RATIO = 0.05;
export interface AcceptPlanImplementCompactionInput {
    readonly summarized: boolean;
    readonly summaryBody: string;
    readonly beforeTokens: number;
    readonly afterTokens: number;
    readonly afterMessages: readonly ChatMessage[];
}
export type AcceptPlanImplementCompactionResult = {
    readonly accept: true;
} | {
    readonly accept: false;
    readonly reason: string;
};
export declare function acceptPlanImplementCompaction(input: AcceptPlanImplementCompactionInput): AcceptPlanImplementCompactionResult;
export declare function extractCompactionSummaryBody(messages: readonly ChatMessage[]): string;
export declare const PLAN_IMPLEMENT_COMPACT_MIN_TOKENS = 6000;