Cannot active RUM debug for Angular


I'm doing a POC with ELK Cloud's APM and an Angular app that uses SpringBoot services.

For a call to an api that takes a minute, the RUM lib doesn't report anything at all. First concern.

To understand this I try to activate the debug in the JS console but without success.

This is a basic app for the POC, fresh installation with the latest version of the NPM package (2.1.4).

The config is at its simplest:

const apm = service.init({
  serviceName: 'angular-app',
  serverUrl: '',
  distributedTracingOrigins: [environment.apiUrl],
  logLevel: 'debug'

The console remains empty...

Thank you !

Hi @nicesp,

Thanks for reaching out!

I have a couple of questions:

  • What version of angular are you using?
  • Are you seeing network requests coming from the agent in your browser network tab? (events/ endpoint)
  • Is this behaviour reproducible in more than one browser?

For the description it seems that maybe the agent is disabled for some reason

What is the output of the following statements?:


On the other hand, the following code checks if some feature is not available:

function isPlatformSupported() {
  if (typeof window === 'undefined') {
      console.log("window not defined")
  var xhr = new window.XMLHttpRequest()
  if (!('withCredentials' in xhr)) {
    console.log("CORS is not supported")

  if (typeof Set !== 'function') {
    console.log("Set is not a function")

  if (typeof JSON.stringify !== 'function') {
    console.log("JSON.stringify is not a function")

  if (typeof !== 'function') {
     console.log("window.performance is not a function")

  console.log("all checks passed properly")

Let me know if this helps you


Hi @Alberto_Delgado,

Thank you for the answer.

  • I use Angular 13
  • Yes, the agent work, events are sents, data and trace are displayed in ELK. Only about once in 10 or 20, when a particular call to my API takes (abnormally) one minute (with sucess), the events are not sent at all.
  • I can reproduce on Brave (last version) or Chrome (last version)

I confirm that, in the event that the events are not sent, the checks have passed and the apm is active.

Thanks !

Hi @nicesp,

The RUM agent ignores the debugLevel in prod environments:

process.env.NODE_ENV === 'production' // does not add debug logic

That's why your JS console is empty. In order to see the logs you may need to create a bundle with a non-production NODE_ENV.

In the following link explains why: Install the Agent | APM Real User Monitoring JavaScript Agent Reference [5.x] | Elastic

On the other hand, managed transactions such as http-requests have a threshold of 60 seconds, if the transaction duration is greater than that, it will be discarded by the agent.

Let me know if this helps you


This topic was automatically closed 20 days after the last reply. New replies are no longer allowed.