/*!
 * Copyright (c) 2020-2026 Digital Bazaar. All rights reserved.
 * Copyright (c) 2026 Interop Alliance (Conversion to Typescript).
 */
/** A thenable that defers its factory until first await, caching the result. */
export interface Deferred<Value> {
    then<Fulfilled = Value, Rejected = never>(onfulfilled?: ((value: Value) => Fulfilled | PromiseLike<Fulfilled>) | null | undefined, onrejected?: ((reason: unknown) => Rejected | PromiseLike<Rejected>) | null | undefined): Promise<Fulfilled | Rejected>;
}
/**
 * Wraps a factory function so it is called lazily — only when first awaited —
 * and its result is cached for subsequent awaits.
 *
 * @param factory {() => Value | PromiseLike<Value>}
 * @returns {Deferred<Value>}
 */
export declare function deferred<Value>(factory: () => Value | PromiseLike<Value>): Deferred<Value>;
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