V8 is Google's open-source JavaScript engine written in C++. It compiles JavaScript directly to native machine code before executing it, making it very fast.
Node.js uses V8 to:
Parse and execute JavaScript code
Handle memory management and garbage collection
Provide JavaScript runtime capabilities on the server
Interface with system-level operations through libuv
V8 features include just-in-time (JIT) compilation, hidden class optimization, and efficient garbage collection.
Rewriting in plainer words…
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