/**
 * HTTP form data
 */
export declare class HttpFormData {
    dataMap: {
        [key: string]: HttpFormData.Data;
    };
    boundary: string;
    constructor();
    append(name: string, value: string | Blob | Uint8Array, fileName?: string): void;
    getMultipartBoundary(): string;
    getContentType(): string;
    getMultipartPostData(): Uint8Array;
    private static generateRandomString;
}
export declare namespace HttpFormData {
    class Data {
        name: string;
        value: string | Blob | Uint8Array;
        fileName?: string;
        constructor(name: string, value: string | Blob | Uint8Array, fileName?: string);
    }
}