Prevent the file from being uploaded if the mimeType is invalid

[predaytor]

Сurrently, regardless of the configuration, the data is loaded to the disk, even after displaying an invalid mimeType error.

upload: {
    staticURL: '/uploads',

    staticDir: path.resolve(__dirname, '../../uploads'),

    mimeTypes: ['image/*'],
}

[denolfe]

Thank you for the report @predaytor . I was able to recreate this - moving to an issue. #940

[Tommy1223454]

This is exactly why I prefer treating uploads as:

receive -> inspect -> then store/promote

instead of writing first and only then deciding whether the file should have been accepted.

I built an OSS package around that pattern in Node.js:
https://github.com/pompelmi/pompelmi

The goal is to keep the first trust decision inside the application path before persistence, so invalid or suspicious uploads don’t automatically become part of local storage / object storage just because the request reached the server.

[zubricks]

Resolved with #1212