After upgrading to tar-fs 3.0.6 from 2.1.1, getting unexpected end of multipart data

[johndevedu]

We're using the pack functionality, and uploading via mutipart/form-data. When we downgrade to 2.1.1, it starts working again. I was looking back at tar-fs 2 -> 3 changes, and noticed one of the major changes was tar-stream. When I use npm override to go back to tar-stream@2.1.4 along with tar-fs@3.0.6, that also works. So I'm thinking it has something to do with tar-stream bump but not sure.

const pack = tar.pack('./', {
      entries: [...],
      finalize: true
    });

const fd = new FormData();
fd.append('file', pack, { filename: "tarballFileName.tar" });

const axiosOptions = {
    method: 'post',
    url: "http://localhost:9090/upload",
    data: fd,
    headers: {
        'Content-Type': `multipart/form-data; boundary=${fd.getBoundary()}`
      },
};

await axios({
    ...axiosOptions
});

Any ideas what could cause it to break?

[mafintosh]

interesting, whats the FormData thing there, some library or?