docs: function decodeStream(opts) {
      opts || (opts = {})
      var stream = Transform({ objectMode: true })
  
      stream._transform = function (data, _, cb) {
        try {
          // decode keys even when keys or values aren't requested specifically
          if ((opts.keys && opts.values) || (!opts.keys && !opts.values)) {
            data.key = ns.decode(data.key, opts)
          }
          else if (opts.keys) {
            data = ns.decode(data, opts)
          }
        }
        catch (err) {
          return cb(err)
        }
        cb(null, data)
      }
  
      return stream
    }