import type { ThirdwebClient } from "../client/client.js";
export type UnpinOptions = {
    client: ThirdwebClient;
    cid: string;
};
/**
 * Unpins a file from IPFS.
 *  For security purposes, this method requires a secret key to be set in the ThirdwebClient instance.
 * @param options - The options for unpinning the file.
 * @param options.client - The Thirdweb client instance.
 * @param options.cid - The content identifier (CID) of the file to unpin.
 * @throws Will throw an error if the client does not have a secret key or if the unpinning fails.
 * @example
 * ```ts
 * import { unpin } from "thirdweb";
 *
 * const result = await unpin({
 *   client: thirdwebClient,
 *   cid: "QmTzQ1N1z1Q1N1z1Q1N1z1Q1N1z1Q1N1z1Q1N1z1Q1N1z1",
 * });
 * ```
 * @storage
 */
export declare function unpin(options: UnpinOptions): Promise<void>;
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