Re: [directory-upload] easier way to determine if something is a directory? (#24)

Those concerns, tho valid, are a little silly when we are discussing spec examples and common usage scenarios... of course, instance of `window1.dir` to `iframe.contentWindow.Directory` is going to return `false` - but that's not something people commonly do. 

---
Reply to this email directly or view it on GitHub:
https://github.com/WICG/directory-upload/issues/24#issuecomment-177897838