/**
 * A value that may be either a Promise resolving to T, or a synchronous value of type T.
 */
export type PromiseOrValue<T> = Promise<T> | T;
/**
 * Wraps the input in a resolved Promise if it is not already a Promise.
 *
 * @param input - A value or Promise to normalize into a Promise.
 * @returns A Promise that resolves to the input value.
 */
export declare function asPromise<T>(input: PromiseOrValue<T>): Promise<T>;