A 1999.io publishing callback that simply copies the published files into another place in the filesystem and corrects the URLs to remove my username and 1999's subdomain from the path. Sort of like blogging in "single user" mode in 1999.

staticsite.js

var store = require ("/FULL/PATH/TO/1999/INSTALL/lib/store.js");

if (screenName == "stoppableforce") {
        var newpath = "/BASE/FOLDER/TO/COPY/FILES/TO/" + relpath;
        var pathCorrectedBody = body.split("configured.url.with/user/yourusername").join("shorter.snappier.url");
        store.newObject(newpath, pathCorrectedBody, type);
}

/* 
What needs to be personalized for this on your system:
/FULL/PATH/TO/1999/INSTALL/: the full path to your 1999 install. This should be the folder that contains 
                             api.js, README.md, the lib subdirectory, the callbacks subdirectory, etc.
/BASE/FOLDER/TO/COPY/FILES/TO/: the folder you want to copy your files to. Published files will appear in this
                                directory and folders under it. 
                                example: /BASE/FOLDER/TO/COPY/FILES/TO/2016/04/03/0030.html
configured.url.with/user/yourusername: the long published page URL that 1999 automatically assigns to your
                                       pages.
                                       example: 1999.yourdomain.com/user/yourtwitterhandle
shorter.snappier.url: exactly what it says on the tin. example: yourdomain.com
*/