Multi file upload

[VadimDez]

Having a use case where we need to upload multiple files at the same time, seems like the underlying logic is not considering arrays.

Consider following scenario when data is something like this:

const data = {
   files: [
     new File([], '1.txt'),
     new File([], '2.txt')
   ]
}

and having uploadPost method like this:

uploadPost: (data: BodyUploadPost, params: RequestParams = {}) =>
  this.request<MessageResponse, HTTPValidationError>({
        path: `/api/upload-files`,
        method: "POST",
        body: data,
        type: ContentType.FormData,
        format: "json",
        ...params,
      }),

The contentFormatters method is in question here as it is called within the request and transforms Object to FormData but not considering property to be an Array:

[ContentType.FormData]: (input: any) =>
      Object.keys(input || {}).reduce((formData, key) => {
        const property = input[key];
        formData.append(key, property instanceof Blob ? property : typeof property === "object" && property !== null ? JSON.stringify(property) : `${property}`);
        return formData;
      }, new FormData()),

Are we doing something wrong or multi-file upload is not supported?