leak-detect.js

const path = require('path');
const memwatch = require('memwatch-next');
const heapdump = require('heapdump');
const logger = require('./logger');
const settings = require('./config/settings');

memwatch.on('leak', info => {
  const filepath = path.resolve(settings.HEAP_SNAPSHOT_DIR, Date.now() + '.heapsnapshot');
  logger.fatal({ leak: info }, 'Memory leak');
  heapdump.writeSnapshot(filepath, err => {
    if (err) {
      logger.error({ err }, 'Failed to take heap snapshot');
    }
  });
});