export type PinataConfig = {
    jwt: string;
    gateway?: string;
};
export declare class PinataClient {
    private client;
    private ready;
    constructor(cfg: PinataConfig);
    uploadFile(file: File): Promise<{
        cid: string;
        id: string;
    }>;
    uploadJSON(obj: unknown, name?: string): Promise<{
        cid: string;
        id: string;
    }>;
    get(cid: string): Promise<any>;
    url(cid: string): Promise<any>;
}
export type PinataPinResp = {
    cid: string;
    size?: number;
    timestamp?: string;
    raw?: any;
};
/**
 * 使用 Pinata JWT 直接上传文件（Node 环境）
 * @param jwt Pinata JWT（以 Bearer 形式传入）
 * @param filePath 本地文件绝对/相对路径（优先）
 * @param data 可选：内存 Buffer（当未提供 filePath 时使用）
 * @param fileName 可选：内存数据的文件名
 */
export declare function pinFileToIPFSWithJWT(jwt: string, filePath?: string, data?: any, fileName?: string): Promise<PinataPinResp>;
/**
 * 便捷方法：上传本地图片路径（返回 CID）
 */
export declare function pinImageByPath(jwt: string, filePath: string): Promise<string>;
export declare function pinFileToIPFSWithJWTWeb(jwt: string, file: Blob, fileName?: string): Promise<PinataPinResp>;
export declare function dataURLToBlob(dataUrl: string): Blob;
export declare function pinDataURLWithJWTWeb(jwt: string, dataUrl: string, fileName?: string): Promise<PinataPinResp>;