'use strict'; const common = require('../common'); const stream = require('stream'); const r = new stream.Stream(); r.listenerCount = undefined; const w = new stream.Stream(); w.listenerCount = undefined; w.on('pipe', function() { r.emit('error', new Error('Readable Error')); w.emit('error', new Error('Writable Error')); }); r.on('error', common.mustCall()); w.on('error', common.mustCall()); r.pipe(w);