Since Thunderbird 52, the command
dump doesn’t do anything anymore.
It was usefull to display message in the console we have if we launch Thunderbird with the option
There was another console, but if we do:
const xConsole = Cc["@mozilla.org/consoleservice;1"].getService(Ci.nsIConsoleService);
xConsole.logStringMessage("a random string");
it doesn’t work either anymore.
console.error do nothing either. Would be too easy.
So, how are we supposed to display a message in Thunderbird now?