import type { CompactionMessage, Message } from "../types.js";
import type { Context, Model, Provider, ServiceTier } from "@slopus/rig-execution";
import type { Context as RuntimeContext } from "@steve.kite/stdlib";
export interface CompactConversationResult {
    compacted: boolean;
    compactedMessageCount: number;
    compactionMessage?: CompactionMessage;
    contextMessages: readonly Message[];
    estimatedTokensAfter: number;
    estimatedTokensBefore: number;
    retainedMessageCount: number;
}
export declare function compactConversation(ctx: RuntimeContext, options: {
    provider: Provider;
    model: Model;
    messages: readonly Message[];
    createProviderContext: (messages: readonly Message[]) => Promise<Context>;
    idFactory: () => string;
    now: () => number;
    reportedTokens?: number;
    force: boolean;
    onCompactionStart?: (event: {
        compactionId: string;
        estimatedTokensBefore: number;
    }) => void | Promise<void>;
    signal?: AbortSignal;
    serviceTier?: ServiceTier;
    startDate?: string;
    thinking?: string;
}): Promise<CompactConversationResult>;