How to use

stderr

function

in

ChildProcessWithoutNullStreams

child.stderr.on("data", data => {
   console.error(`get-pip.py: ${data}`);
  });

})
if (settings.relayStderr) {
 program.stderr.pipe(process.stderr)
  collect(program.stderr, function (err, chunks) {
   if (err) return done(err)
   done(null, Buffer.concat(chunks).toString())
  result ? result.stderr : null,
  tempdir)
})

child.stderr.on("data", m => process.stderr.write(m));

 stdout = data.toString();
});
parseServerProcess.stderr.on('data', data => {
 stderr = data.toString();
});

 stdout += str;
});
child.stderr.setEncoding('utf8');
child.stderr.on('data', function ondata(str) {
 process.stderr.write(str);
 stderr += str;
});

cmd.stderr.on('data', error => {
 const { filteredError } = cleanJunkMtpError({ error });

child.stderr.on('data', function (data) {
   stderr += data;
   if (!data.match(/^\u001b\[\d+m$/)) {
    gutil.log(data);
   }
  });

function exec (cmd, args) {
 const child = cp.spawn(cmd, args);

 child.stdout.pipe(process.stdout);
 child.stderr.pipe(process.stderr);
}

let rcrack = (checksum) => {
 return new Promise((resolve, reject) => {
  let child = spawn(process.env.RCRACK_PATH, ['tables', '-h', checksum], { cwd: path.resolve(process.env.RCRACK_PATH, '../..') })
  child.addListener('error', reject)
  child.stdout.on('data', resolve)
  child.stderr.on('data', reject)
 })
}

const spawnChild = function(cmd, args, opts, onstdout, onstderr, onclose) {
 let child = spawn(cmd, args, opts);
 child.stdout.on('data', onstdout);
 child.stderr.on('data', onstderr);
 child.on('close', onclose);
}

shell(code, out, done) {
  const proc = spawn('sh', ['-x', '-c', code])
  proc.stdout.on('data', data => out.stream('stdout', data.toString()))
  proc.stderr.on('data', data => out.stream('stderr', data.toString()))
  proc.on('close', code => {
   done(code !== 0 ? new Error(`Exit code: ${code}`) : null)
  })
 }

child.stderr.on('data', (data) => {
 const s = data.toString();
 if (s.startsWith('__DEBUGGER_URL__')) {
  start(s.split(' ')[1]);
 } else if (s !== 'Debugger attached.\n') {
  process.stderr.write(data);
 }
});

proc.stderr.on('data', output => {
    error = output.toString();
    ctx.pubsub.publish(args.topic, {
     error,
     topic: args.topic
    });
   });

child.stderr.on("data", data => {
   console.error(`get-pip.py: ${data}`);
  });

child.stderr.on("data", m => process.stderr.write(m));