import { FutureInstance } from 'fluture';
/**
 * Coerces a non-Future into a Future that resolves to that value. If the value is already a Future, it is returned
 * as-is.
 */
export declare const toFuture: <T extends any>(value: T | FutureInstance<any, T>) => FutureInstance<any, T>;
export declare const tapCancellation: <T extends FutureInstance<any, any>>(onCancel: () => void) => (future: T) => T;
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