/**
 * Thread-local context storage backed by AsyncLocalStorage.
 */
export default class ThreadLocal<T extends object> {
    private storage;
    /**
     * Runs a synchronous or asynchronous function within the specified context store.
     * Preserves context across all async await operations inside fn.
     */
    run<R>(value: T, fn: () => R): R;
    /**
     * Retrieves the current context store.
     */
    get(): T | undefined;
    /**
     * Merges values into the current context store.
     */
    set(value: T): void;
}