type SharedAsyncResourceState = {
  _tag: 'idle' | 'loading' | 'ready';
  consecutiveFailures: number;
  lastFailureAt: null;
} | {
  _tag: 'cooldown' | 'exhausted';
  consecutiveFailures: number;
  lastFailureAt: number;
  error: unknown;
};
interface SharedAsyncResourceOptions<T> {
  load: () => Promise<T>;
  retryCooldownMs?: number;
  maxConsecutiveFailures?: number;
  now?: () => number;
  onStateChange?: (state: SharedAsyncResourceState) => void;
}
interface SharedAsyncResource<T> {
  get: () => Promise<T>;
  state: () => SharedAsyncResourceState;
  reset: () => void;
}
declare function createSharedAsyncResource<T>(options: SharedAsyncResourceOptions<T>): SharedAsyncResource<T>;
interface ObjectAsyncLock<T extends object> {
  run: <R>(key: T, task: () => Promise<R>) => Promise<R>;
}
declare function createObjectAsyncLock<T extends object>(onRejected?: (error: unknown) => void): ObjectAsyncLock<T>;
export { ObjectAsyncLock, SharedAsyncResource, SharedAsyncResourceOptions, SharedAsyncResourceState, createObjectAsyncLock, createSharedAsyncResource };