Even then, wasn't it usually the opposite case, where you would get the "console undefined" error when the developer console was closed? I can't think of a sin

Even then, wasn't it usually the opposite case, where you would get the "console undefined" error when the developer console was closed? I can't think of a single case where an error only occurs (or is observed) when the console is closed. Having said that, this project definitely still has its practical uses.