code: function(done) {
            readBuffer(info.filePath, function(data) {
              lzma.compress(data, 1, function(result, error) {
                if (error) {
                  throw error;
                }
                writeBuffer(info.lzFilePath, new Buffer(result), function() {
                  info.lzTime = Date.now();
                  // Open and read the size of the minified+lzma output
                  readSize(info.lzFilePath, function(size) {
                    info.lzSize = size;
                    done();
                  });
                });
              });
            });
          }
docs: Apply LZMA on minified output