import type { BasicLogger } from "@cline/shared";
import type { CoreCompactionContext, CoreCompactionResult } from "../../types/config";
import { type EstimateMessageTokens } from "./compaction-shared";
/**
 * Fold the conversation history without a summarizer model. Typed user
 * prompts always survive. The latest typed turn keeps its newest messages
 * verbatim within the token target, dropping only the oldest ones (the
 * kept suffix starts at an assistant message so no tool pair is split).
 * Older turns keep their concluding assistant answer when it fits, newest
 * turns first. Everything else is dropped and re-surfaced as dropped-work
 * summaries attached to the surviving prompts.
 */
export declare function runBasicCompaction(options: {
    context: CoreCompactionContext;
    estimateMessageTokens: EstimateMessageTokens;
    logger?: BasicLogger;
}): CoreCompactionResult | undefined;