mozilla/browserid — comment on commit 591c3404789394bf68dccce2eb36c3cf819f355c
File: resources/static/include_js/include.js line 862
By shane-tomlinson:

@ozten - that is intentional. A value is only returned when there is a problem that must be addressed. So, returning "LOCALSTORAGE" means the reason that BrowserID is not able to operate is because the user does not have localStorage. Now that I have added LOCALSTORAGE_DISABLED, the original names are not as clear. I will update these.