At simple BlazorBrowserExtension i’m trying to call a c# method marked with the [JSInvokable] from BackgroundWorker.js extension file.

According to documentation the project structure:

FilesChooser.cs

 public class FilesChooser
 {
     public FilesChooser(string? name)
     {
         Name = name ?? "No Name";
     }

     public string? Name { get; set; }

     [JSInvokable]
     public string GetHelloMessage() => $"Hello, {Name}!";
 }

JsInteropClasses3.cs

public class JsInteropClasses3
  {
      private readonly IJSRuntime js;

      public JsInteropClasses3(IJSRuntime js)
      {
          this.js = js;
      }

      public async ValueTask<string> CallHelloHelperGetHelloMessage(string? name)
      {
          using var objRef = DotNetObjectReference.Create(new FilesChooser(name));
          return await js.InvokeAsync<string>("GetHelloMessage", objRef);
      }
  }

And it works well on Index.razor

@code {
    private string? name;
    private string? result;
    private JsInteropClasses3? jsInteropClasses;

    protected override void OnInitialized()
    {
        jsInteropClasses = new JsInteropClasses3(JS);
    }

    private async Task TriggerDotNetInstanceMethod()
    {
        if (jsInteropClasses is not null)
        {
            result = await jsInteropClasses.CallHelloHelperGetHelloMessage(name);
        }
    }
}

But when i’m calling it from BackgroundWorker.js nothing hapends (obviously falling with exseptions):

import * as _ from "/content/Blazor.BrowserExtension/lib/browser-polyfill.min.js";

browser.runtime.onInstalled.addListener(() => {
  const indexPageUrl = browser.runtime.getURL("index.html");
  browser.tabs.create({
    url: indexPageUrl
  });
});

browser.runtime.onMessage.addListener(function (request, sender, sendResponse) {
    // Callback for that request

    let rez = '';
    browser.invokeMethodsAsync = async (element) => {
        rez = await element.dotNetHelper.invokeMethodAsync('GetHelloMessage');
        sendResponse({ message: "Background has received that message ????" + rez});
    }

    return true;  // Add return true to fix the error. 
    
});

What can be done in this situation?