in series.js [29:38]
function SeriesRW(rws) {
if (!Array.isArray(rws) || arguments.length > 1) {
rws = Array.prototype.slice.call(arguments);
}
if (!(this instanceof SeriesRW)) {
return new SeriesRW(rws);
}
this.rws = rws;
BufferRW.call(this);
}