Simply loading https://develop.4minitz.com/ with InternetExplorer11 gives an empty Screen. And this error in the console:

SCRIPT1002: Syntaxfehler
Datei: 9f036544bb2342454982fdf31886e6876a6fab53.js, Zeile: 13, Spalte: 248856

See screenshot for syntax error Location. Seems to be somewhere at imports of dependencies of fs-extra...

@migerh: could you have a look?!