Stuck Promises from node-postgres/Client#query

annotated-output.txt

* firing query
* query result: 1
* firing query
* query result: 1
* firing query
* query result: 1
* firing query
* query result: 1
* firing query
* query result: 1
<At this point, we shut down PostgreSQL>
* connection error: Error: Connection terminated unexpectedly
* connection end
* firing query
* query error: This socket has been ended by the other party
* firing query
<Note: the second "failing" query is never run because the first still has not left the queue>
* firing query
* firing query
* firing query
* firing query
* firing query
* firing query
* firing query
* firing query
* firing query
* firing query
* firing query
* firing query
* firing query
* firing query

client-query-disconnect.js

'use strict';

const pg = require('pg');
const client = new pg.Client({ connectionString: 'postgresql://postgres:swordfish@127.0.0.1/postgres' });

client.connect().then(function() {
  setInterval(function() {
    console.log('* firing query');
    client.query('SELECT 1 AS one').then(function(result) {
      console.log('* query result: %s', result.rows[0].one);
    }, function(error) {
      console.log('* query error: %s', error.message);
    });
  }, 5000);

  client.on('end', function() {
    console.log('* connection end');
  });
  client.on('error', function(error) {
    console.log('* connection error: %s', error);
  });
});

Correction: in the annotated output, line 17 says the previous query has not left the queue. It actually has, but the processing of the queue is still not unlocked because readyForQuery === false.