gistfile1.js

    fs.readdir(dir, function(err, files){
        for(x in files){
            let fn = files[x];

            if (! fn.match(/\.html$/)) {
                continue;
            }

            fs.readFile(
                dir + '/' + fn,
                {encoding : 'utf8'},
                function(err, data) {
                    templates[fn] = hogan.compile(data);
                };
            );
        }
    });