Deprecating Polymer

I am getting this error in the logs, my question is simple how do I find out which custom card etc use it?

Logger: frontend.js.latest.202304061
Source: components/system_log/
First occurred: 13:11:51 (2 occurrences)
Last logged: 13:12:09

WARNING: Polymer will be removed from window in Home Assistant 2023.5. More info:

as I had posted a bit later in that thread, it might be a bit more involved than that, because many resources in that result dont actually use the Polymer. They turn up because of the copyright comments.

you have to find things like

class TextInputRow extends Polymer.Element {

  static get template() {
    return Polymer.html`

in the actual code itself.

in the end, from that list, it was only text-input-row that triggers the warning in my config.

1 Like

Thank you for your help.

Is there a way to load polymer by myself as they describe in the article?