I typed "[[[[" and the script became unresponsive (hung).
Repeated by reloading the page. Same result.
FireFox / MacOS.
Repeated by reloading the page. Same result.
FireFox / MacOS.
[You'll need to hard-refresh to get the fixed code.]
Uncaught TypeError: Cannot set property 'curOrigin' of undefined (infer.js:489)
Looks interesting though!