All these inconsistencies across and within the different operating systems required a higher-level abstraction to be built for the Event Demultiplexer. This is exactly why the Node.js core team created a C library called libuv, with the objective to make Node.js compatible with all the major platforms and normalize the non-blocking behavior of the different types of resource; libuv today represents the low-level I/O engine of Node.js. Besides abstracting the underlying system calls, libuv also implements the reactor pattern, thus providing an API for creating event loops, managing the event
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