On Tue, Nov 7, 2017 at 10:03 PM, Jörg Knobloch <jorgk@jorgk.com> wrote: > On 07/11/2017 08:15, Onno Ekker wrote: > >> However, for the release of Thunderbird 59, there are more changes that >> affect (like break) add-ons. Here are just a few I ran into: >> * Removal of STEEL >> * Removal of nsIScriptableDateFormat >> * Removal of nsILocalFile >> * Removal of for..each construct >> * Removal of with construct >> > > There were a few more, most notably nsIFilePicker.show(). > > BTW, I'm not aware of a "with construct". > See here: < https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/with > I'm not sure if support for it is removed totally, or only when you toggle the pref javascript.options.strict to true: < https://developer.mozilla.org/en-US/docs/Mozilla/Debugging/Debugging_JavaScript#Strict_code_checking > Onno