Version compatible with IE11

[enboig]

I am trying to use it in IE11 to upload compressed&passwored files to a server; but the most simple code I have working in modern browsers fail.
Which is the last version compatible with IE11? Is there a simple example (just an which download the file in a zipped file)?

Thanks

[gildas-lormeau]

There is no version of zip.js supporting encrypted files officially compatible with IE11. I guess it should be possible to compile the code with babel to make it work with IE11 though.