In Node.js If v8 Runs Your JavaScript, What Runs The Node.js Api?

Question

I'm trying to understand the internal structure of Node.js. To my understanding V8 runs the JavaScript(EcmaScript) which makes sense. Since all the Node.js Api is not JavaScript but looks like JavaScript, My question is, what runs the Node.js Api. For example what runs

http.createServer();

Or

fs.readFile();

Mayank Sinha · Accepted Answer · 2019-07-12 14:23:51Z

2

All of Node.js API is JavaScript.

Only the I/O operations are delegated to the libuv library which is written entirely in C. Stuff like fs.readFile is just wrappers around libuv functions, the so called POSIX API.

answered Jul 12, 2019 at 14:23

Mayank Sinha

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2 Comments

claOnline Over a year ago

So you mean v8 runs fs.readFile() , http.createServer() e.t.c

Mayank Sinha Over a year ago

@claOnline absolutely

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