Save automatically console to file?

[mozillaine]

How i can save all console log messages *automatically* to file in Firefox Quantum and 56.x?

[morat]

Maybe use dump() instead of console.log(), then redirect to a file.

To see the dump output you have to enable it by setting the browser.dom.window.dump.enabled pref to true.

Dump
http://developer.mozilla.org/docs/Web/API/Window/dump

HTTP logging
http://developer.mozilla.org/docs/Mozilla/Debugging/HTTP_logging