@profusion/apollo-federation-upload/build/FormData.d.ts

This library makes it easier to support file uploads to your federated micro-services. It uses the [Apollo](https://www.apollographql.com/docs/apollo-server/data/file-uploads/) server's solution. It works by simply redirecting the file uploaded stream to

import BaseFormData from 'form-data';
export default class FormData extends BaseFormData {
    getLength(callback: (err: Error | null, length: number) => void): void;
    getLengthSync(): number;
}