import { ProviderId, ProviderUsage, RuntimePaths } from "./types.js";
export declare function saveUsage(usage: ProviderUsage, paths?: RuntimePaths): void;
export declare function writeUsageSnapshot(latest: ProviderUsage, sample: ProviderUsage, paths?: RuntimePaths): void;
export declare function loadLatestUsage(provider: ProviderId, paths?: RuntimePaths): ProviderUsage | null;
export declare function loadSamples(provider: ProviderId, paths?: RuntimePaths): ProviderUsage[];