In Chrome extensions, errors thrown in callbacks for async APIs do not trigger the global window.onerror handler.

Note that this disclaimer only says the document should not be used for citation purposes, but doesn't say we can't use it for annotation purposes like testing out the Chrome PDF.js + Hypothes.is extension! :)

You can install the extension from the Chrome Web Store with this link:

https://chrome.google.com/webstore/detail/pdfjs-%2B-hypothesis/bipacimpfefoidapjkknffflfpfmjdog/related