Safari / iOS syncWorker stops working after four invocations

[eshaz]

In icecast-metadata-player this library is being used to synchronize Icecast streams. When testing in iOS and Safari on MacOS, the web worker implementation only completes successfully four times, and any future invocations fail without any errors.

The first four invocations work fine without any issues. After that, the worker appears to spawn and when correlate is called, which is a function bound to the WASM instance, the worker terminates without calling postMessage. There are no errors or any other indication of a problem, other than the worker terminating prematurely.

Ideas:

• Use a thread pool that always remains open, if the issue is with a general limit of four workers in Safari.