Duplicate file issue 🙄

[dhruvil2487]

Describe the bug
If the user drags the file, then Dropzone again uploads a duplicate file.

To Reproduce
Steps to reproduce the behavior:

1. upload the file
2. Drag the file a little bit
3. you can see a duplicate file is created
4. See error

Expected behavior
Do not create duplicate files if the user drags the file.

Screenshots & video recording

Browser / OS:

• OS & Device: [windows 10]
• Browser [Chrome]
• Version [118.0.5993.89]

Additional context
Duplicate files created with different names

[vdejager]

I've tried the preventDuplicates: true, option, but also get the same issue in 6 beta

[vdejager]

Anyway,

this piece of code works (https://stackoverflow.com/questions/26296232/dropzone-prevent-uploading-of-duplicate-files):

if (this.files.length) {
        var _i, _len;
        for (_i = 0, _len = this.files.length; _i < _len - 1; _i++) // -1 to exclude current file
        {
            if(this.files[_i].name === file.name && this.files[_i].size === file.size && this.files[_i].lastModified.toString() === file.lastModified.toString())
            {
                this.removeFile(file);
            }
        }
    }

could this just be a setting, like preventDuplicates: true (which does not seem to exist in the 6beta codebase).
A requirement should be that the associated events are not fired for the duplicate file