import type { ClientApi } from "../client/index.js";
/**
 * A hook that allows you to upload a file to R2.
 *
 * This hook can be used as is, or copied into your own code for customization
 * and tighter control.
 *
 * @param api - The client API object from the R2 component, including at least
 * `generateUploadUrl` and `syncMetadata`.
 * @returns A function that uploads a file to R2.
 */
export declare function useUploadFile(api: Pick<ClientApi, "generateUploadUrl" | "syncMetadata">): (file: File, options?: {
    onProgress?: (progress: {
        loaded: number;
        total: number;
    }) => void;
}) => Promise<string>;
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