Webworker not appearing in code coverage report in angular

I've wrote a test for a web worker in angular and it run properly.

The problem is it not appearing in the code coverage report generated after the run.

this is the code i'm testing:

/// <reference lib="webworker" />

let timer: number;
let currentInterval: number;
let _inactivityTime: number;
const ONE_SECOND = 1000;

const startTimer = (inactivityTime: number) => {
_inactivityTime = inactivityTime;
timer = inactivityTime;
currentInterval = setInterval(() => {
timer--;
if (timer <= 0) {
clearInterval(currentInterval);
postMessage('logout');
}
}, ONE_SECOND) as unknown as number;
};


And this is my test.

describe('Timeout worker', () => {
it('should send logout message after the time has expired', (done) => {
const worker = new Worker(new URL('./app.worker', import.meta.url));
worker.addEventListener('message', (event) => {
expect(event.data).toBe('logout');
done();
});
jasmine.clock().install();
worker.postMessage({ action: 'start', time: 0 });
jasmine.clock().tick(2001);
jasmine.clock().uninstall();
});
});


I've tried to explicitly declare it in the karma.conf file with no success.

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