29   const stream = new Writable({ objectMode: true });  property
43   const r = new Readable({ objectMode: true });  property
88   const r = new Readable({ objectMode: true });  property
105   const r = new Readable({ objectMode: true });  property
125     objectMode: true  property
142     objectMode: true  property
157     objectMode: true  property
175     objectMode: true  property
206     objectMode: true  property
217   const w = new Writable({ objectMode: true });  property
231   const w = new Writable({ objectMode: true });  property
254     objectMode: true  property
278     objectMode: true  property