How is the event loop integrated in Node.js?
The event loop runs in libuv, but Node.js integrates with it through bootstrap and scheduling code. Callbacks flow from libuv back to JavaScript through the C++ bindings. Reading the source shows this integration in detail.
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More FAQs in Understanding Node.js Internal Architecture From the Source Code
The JavaScript API in the lib directory, the C++ bindings in the src directory, V8 for JavaScript execution, and libuv for async I/O. Understanding how these layers connect is key to understanding Node.js internals.
The JavaScript APIs in the lib directory call C++ binding functions defined in the src directory. These bindings connect to libuv for I/O operations or V8 for JavaScript execution, bridging the JavaScript and C++ layers.
Node.js has a module loading system in the lib directory. Reading the source shows how require resolves paths, how caching works, and how built-in modules like fs and http are registered differently from user modules.
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