/**
 * A Promise, AsyncIterable, or a synchronous value.
 */
export type AsyncState<T> = Promise<T> | AsyncIterable<T> | T;
/**
 * Type guard to check if a value is a Promise.
 */
export declare function isPromise<T>(value: unknown): value is Promise<T>;
/**
 * Type guard to check if a value is an AsyncIterable.
 * This includes AsyncGenerators.
 */
export declare function isAsyncIterable<T>(value: unknown): value is AsyncIterable<T>;
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