I was the person in the previous thread who found them useful, and I still do. Some of the extraWarnings stuff is of questionable value, but the undefined property stuff is really useful.
I don't really know if other people use this stuff. extraWarnings are enabled by default in debug builds, and I think a lot of people don't realize the difference between these "extra warnings" and normal JS errors. Writing front-end JS code for Firefox is generally a painful experience: terrible error messages, often no filename or line number information, or even no output at all. But I think we should be making things better, not worse. Remove features like this takes us in the wrong direction. If the undefined property warning is broken, we should fix it. -Bill On Fri, Dec 19, 2014 at 12:32 PM, J. Ryan Stinnett <jry...@gmail.com> wrote: > > Some prior discussion of this feature happened in the platform thread > "Disabling > strict warnings as errors in xpcshell"[1]. > > A few people argued for the extra warnings to be removed, while one person > said they were useful. > > No clear conclusion was reached. > > [1]: > > https://groups.google.com/d/topic/mozilla.dev.platform/znIkVsh5YYA/discussion > > On Fri, Dec 19, 2014 at 2:19 PM, Jason Orendorff <jorendo...@mozilla.com> > wrote: > > > > So if you go to about:config and set the javascript.options.strict pref, > > you'll get warnings about accessing undefined properties. > > > > js> Math.TAU > > undefined > > /!\ ReferenceError: reference to undefined property Math.TAU > > > > (It says "ReferenceError", but your code still runs normally; it really > is > > just a warning.) > > > > Is anyone using this? Bug 1113380 points out that the rules about what > kind > > of code can cause a warning are a little weird (on purpose, I think). > Maybe > > it's time to retire this feature. > > > > https://bugzilla.mozilla.org/show_bug.cgi?id=1113380 > > > > Please speak up now, if you're still using it! > > > > -j > > _______________________________________________ > > dev-platform mailing list > > dev-platform@lists.mozilla.org > > https://lists.mozilla.org/listinfo/dev-platform > > > _______________________________________________ > dev-platform mailing list > dev-platform@lists.mozilla.org > https://lists.mozilla.org/listinfo/dev-platform > _______________________________________________ dev-platform mailing list dev-platform@lists.mozilla.org https://lists.mozilla.org/listinfo/dev-platform
