/**
 * Async counterpart of {@link using}. Awaits `callback`, then disposes
 * `resource` in a `finally` block — async disposers are awaited. Resolves to
 * `callback`'s value.
 */
export declare const usingAsync: <T extends Disposable | AsyncDisposable, TReturns>(resource: T, callback: (r: T) => Promise<TReturns>) => Promise<TReturns>;
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