import type { ExtensionContext } from "@earendil-works/pi-coding-agent";
import type { FabricConfig } from "../config.js";
export declare const modelCompactionKey: (model: Pick<NonNullable<ExtensionContext["model"]>, "provider" | "id"> | undefined) => string | undefined;
export type AutoCompactionTrigger = "headroom" | "tokens" | "ratio";
export declare const outputReserveBreached: (usage: {
    tokens: number | null;
    contextWindow: number;
} | undefined, outputReserveTokens: number) => boolean;
export declare const compactAtConfiguredThreshold: (context: ExtensionContext, config: FabricConfig, onTrigger?: (trigger: AutoCompactionTrigger, committed: boolean) => void) => Promise<boolean>;
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