Doesn't work for Twine text quest

Example [game](https://htmlpreview.github.io/?https://github.com/Headmast/front_quest_bank/blob/main/twine-game.html)

```
VM11:15 Uncaught SyntaxError: Failed to execute 'appendChild' on 'Node': Invalid regular expression flags
    at loadJS (htmlpreview.js:86:18)
    at htmlpreview.js:56:5
```

