Conexão com o postgres

Bom dia,

estou tentando fazer a conexão com o postgres mas está dando um erro , podem me ajduar ? connectionFactory.js

const { Pool, Client } = require('pg')

const pool = new Pool({
  user: 'postgres',
  host: 'localhost',
  database: 'bancoTeste',
  password: 'postgres',

})

pool.query('SELECT NOW()', (err, res) => {
  console.log(err, res)
  pool.end()
})

const client = new Client({
  user: 'postgres',
  host: 'localhost',
  database: 'bancoTeste',
  password: 'postgres',

})
client.connect()

client.query('SELECT NOW()', (err, res) => {
  console.log(err, res)
  client.end()
})

bancoDados.js

module.exports = function(app){
  app.get('/bancoDados',function(req, res) {
    console.log('recebida requisicao de teste na porta 3000');
    res.send('OK');

  });

  app.post('/bancoDados/people', function(req, res){
    var people = req.body;
    console.log('processando uma requisição de um novo pagamento');
    people.status = 'CRIADO';


    var connection = app.persistencia.connectionFactory();
    var peopleDAO = new app.persistencia.PeopleDAO(connection);

    peopleDAO.salva(people, function(erro, resultado){

      if(erro){
        res.send(erro);
      }else {
        console.log('PAGAMENTO CRIADO');
        res.json(people);
      }
    });
  });
}

o erro foi o seguinte :

consign v0.1.6 Initialized in C:\Users\Jessica\node
+ .\controllers\bancoDados.js
+ .\persistencia\connectionFactory.js
+ .\persistencia\PeopleDAO.js
servidor rodando na porta 3000
undefined Result {
  command: 'SELECT',
  rowCount: 1,
  oid: null,
  rows: [ { now: 2019-04-12T13:08:29.901Z } ],
  fields:
   [ Field {
       name: 'now',
       tableID: 0,
       columnID: 0,
       dataTypeID: 1184,
       dataTypeSize: 8,
       dataTypeModifier: -1,
       format: 'text' } ],
  _parsers: [ [Function: parseDate] ],
  RowCtor: null,
  rowAsArray: false,
  _getTypeParser: [Function: bound ] }
null Result {
  command: 'SELECT',
  rowCount: 1,
  oid: null,
  rows: [ { now: 2019-04-12T13:08:29.901Z } ],
  fields:
   [ Field {
       name: 'now',
       tableID: 0,
       columnID: 0,
       dataTypeID: 1184,
       dataTypeSize: 8,
       dataTypeModifier: -1,
       format: 'text' } ],
  _parsers: [ [Function: parseDate] ],
  RowCtor: null,
  rowAsArray: false,
  _getTypeParser: [Function: bound ] }
processando uma requisição de um novo pagamento
TypeError: app.persistencia.connectionFactory is not a function
    at C:\Users\Jessica\node\controllers\bancoDados.js:15:39
    at Layer.handle [as handle_request] (C:\Users\Jessica\node\node_modules\express\lib\router\layer.js:95:5)
    at next (C:\Users\Jessica\node\node_modules\express\lib\router\route.js:137:13)
    at Route.dispatch (C:\Users\Jessica\node\node_modules\express\lib\router\route.js:112:3)
    at Layer.handle [as handle_request] (C:\Users\Jessica\node\node_modules\express\lib\router\layer.js:95:5)
    at C:\Users\Jessica\node\node_modules\express\lib\router\index.js:281:22
    at Function.process_params (C:\Users\Jessica\node\node_modules\express\lib\router\index.js:335:12)
    at next (C:\Users\Jessica\node\node_modules\express\lib\router\index.js:275:10)
    at C:\Users\Jessica\node\node_modules\body-parser\lib\read.js:130:5
    at invokeCallback (C:\Users\Jessica\node\node_modules\raw-body\index.js:224:16)

Podem me dar uma ajuda ? Obrigada