How can i upload files to file.io using cloud flare workers[javascript]?

Question

These recent days I tryed multiple times to upload file to file.io using cfworkers but it returns error this is my source code:

  async function handleRequest() {
const file = fetch('https://upload.wikimedia.org/wikipedia/commons/thumb/b/b1/02_start_book_creator.png/640px-02_start_book_creator.png');
let formData = new FormData();
formData.append("file", file);
 var returned=fetch('https://file.io', {
  method: 'POST',
  body: formData
});


 return returned
    }
    addEventListener("fetch", event => {
      return event.respondWith(handleRequest())
      })

The error is this:

{"success":false,"error":400,"message":"Trouble uploading file"}

What i have to do with this?

question from:https://stackoverflow.com/questions/65650866/how-can-i-upload-files-to-file-io-using-cloud-flare-workersjavascript

Answer 1

Unfortunately, as of this writing, Cloudflare Workers doesn't support the File API and thus can't construct FormData containing filenames and types, which is probably what you need here.

However, coincidentally, we're planning to roll out support for this very soon -- this week or next week. Once we've done that, you can construct your FormData containing File objects, like so:

let response = await fetch('https://upload.wikimedia.org/wikipedia/commons/thumb/b/b1/02_start_book_creator.png/640px-02_start_book_creator.png');
let data = await response.arrayBuffer();
let file = new File([data], "640px-02_start_book_creator.png", {type: "image/png"})
let formData = new FormData();
formData.append("file", file);