How to query the current qualityOfService from WorkerGlobalScope?

[hoch]

An interesting idea! Kudos to everyone involved in the proposal.

Based on the proposed IDL, you can set the quality of service at the construction time:

let worker = new Worker('worker.js', { qualityOfService: 'high' });

But how can we query the current qualityOfService from the created worker instance? The QoS option is supposed to be a "hint" so this option might not be honored the browser implementation.

partial interface Worker : EventTarget {
  attribute readonly qualityOfService;
}

Perhaps something like this will be sensible, but IMO the implication of it needs to be discussion.