Bug in Meter Custom Metric

[opqastudios]

let reqsec = tx2.meter(
{
  name : 'request',
  samples : 1,
  timeframe : 60,
  unit : "req/sec"
})

There is a bug when using the unit property of the meter object.
In the pm2 dashboard, it will be displayed twice, like this:

request 0 req/sec req/sec

To fix the bug, just delete ' + '' + opts.unit' on line 196 of the tx2/src/metrics.js file

That is, instead of this:

this._metrics[opts.name] = {
    value: function() {
        return meter.val() + '' + opts.unit
    },
    unit : opts.unit
}

You should have this:

this._metrics[opts.name] = {
    value: function() {
        return meter.val()
    },
    unit : opts.unit
}