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Now Node.js recommends using instead of for this purpose. https://nodejs.org/api/os.html#oscpus:~:text=os.cpus().length%20should%20not%20be%20used%20to%20calculate%20the%20amount%20of%20parallelism%20available%20to%20an%20application.%20Use%20os.availableParallelism()%20for%20this%20purpose. This PR makes the default value to use that when it's available. (Node.js 18.14.0+, 19.4.0+) https://nodejs.org/api/os.html#osavailableparallelism I also updated TypeScript as the type check failed on my machine. I tested this change by running on Node.js 18.17.1 (Windows) and on Node.js 18.12.1 (WSL).

Hello，this repo display a convenient way to create a worker pool by Promise. But it only support using a function to create a worker pool. So i add the feature to create a worker pool by using a file path. Please see #3

support creating a worker by using a file path