Enable an app to display a custom "interrupted" dialog

[ctrlaltdavid]

Rather than just allowing the 'The download of {filename} was interrupted' system message box text to be customized, enable the app to provide a dialog box styled per the app.

Could perhaps be achieved by one of:
(a) Add an 'onError' optional callback. (No "interrupted" dialog is displayed is this callback is specified.)
(b) Allow a blank string to be specified as the value of 'errorMessage'. (No "interrupted" dialog is displayed if the string is ""; the "interrupted" result can be found by testing the 'state' returned by the 'done' event).

[sindresorhus]

I would go with a.

[theogravity]

I have this feature implemented in my library where you can hook into an error or interrupted callback:

https://github.com/theogravity/electron-dl-manager