Javascript "sandbox" escape, and tricking a promise into not terminating a webworker.

[https://gist.github.com/itsZN/9e07180b536b464ec57dcbf4e6fb479f](https://gist.github.com/itsZN/9e07180b536b464ec57dcbf4e6fb479f)

Original writeup (https://gist.github.com/itsZN/9e07180b536b464ec57dcbf4e6fb479f).