import { type CompactionResult, type ExtensionAPI, type ExtensionContext, type SessionBeforeCompactEvent } from "@earendil-works/pi-coding-agent";
import type { AdapterState } from "../activation/state.ts";
export declare function handleCodexSessionBeforeCompact(event: SessionBeforeCompactEvent, ctx: ExtensionContext, state: AdapterState, pi: ExtensionAPI): Promise<{
    cancel: boolean;
    compaction?: never;
} | {
    cancel?: never;
    compaction: CompactionResult<unknown>;
} | undefined>;