import type { Provider } from "../types.js";
import type { CredentialRankingStrategy, UsageProvider } from "../usage.js";
/** Resolves the usage-based ranking strategy for a provider. */
export type RankingStrategyResolver = (provider: Provider) => CredentialRankingStrategy | undefined;
/** Built-in usage providers, in probe order. */
export declare const DEFAULT_USAGE_PROVIDERS: readonly UsageProvider[];
/** Built-in usage provider for `provider`. */
export declare function defaultUsageProvider(provider: Provider): UsageProvider | undefined;
/** Built-in ranking strategy for `provider`. */
export declare function defaultRankingStrategy(provider: Provider): CredentialRankingStrategy | undefined;