FormData appears to be handled differently/incorrectly in 0.27

[dwightwatson]

Describe the bug

Form uploads appear to have broken between v0.26 and v0.27. Requests that used to work without issue no longer work.

Here is sample code that accepts a file and attempts to upload it to Cloudinary using form data.

export const upload = (file) => {
  const formData = new FormData();
  formData.set("file", file);
  formData.set("upload_preset", CLOUDINARY_UPLOAD_PRESET);

  return axios.post(
    `https://api.cloudinary.com/v1_1/${CLOUDINARY_CLOUD}/upload`,
    formData
  );
};

Inspecting the v0.26 request in with Chrome shows that it at least understands the content provided:

Inspecting the v0.27 request in Chrome it appears to show more raw data - as if the form data wasn't handled correctly and is corrupted.

I've attempted to use the alternate FormData syntax for v0.27 as suggested in the documentation but I have the same issue.

export const upload = (file) => {
  return axios.post(`https://api.cloudinary.com/v1_1/${CLOUDINARY_CLOUD}/upload`, {
    file: file,
    upload_preset: CLOUDINARY_UPLOAD_PRESET
  }, {
    headers: {
      "Content-Type": "multipart/form-data"
    }
  });
};

To Reproduce

I couldn't get this running on RunKit because it's a Node environment, where my issue is in the browser using the native FormData vs the form-data npm package. However, the code below can be used (making a dummy request to /api) that would demonstrate the difference in request handing between the two affected versions.

export const upload = (file) => {
  const formData = new FormData();
  formData.set("file", file);
  formData.set("additional_parameter", "additional_parameter");

  return axios.post("/api", formData);
};

Expected behavior

I would have expected the request with form data that worked in v0.26 to continue to work in v0.27 without issue.

Environment

• Axios Version 0.27
• Browser: Chrome
• Browser Version: 100
• Node.js Version: 18.0.0
• OS: maxOS 12.3.1

Additional context/Screenshots

Add any other context about the problem here. If applicable, add screenshots to help explain.

[Yusoo]

I had the same problem

[GuoSirius]

this is needed!

[philBrown]

Duplicate of #4631

[jasonsaayman]

Fixing this in 0.27.2