print libuv threadpool size in node js 8

Question

This link purely specifies that libuv provides a thread pool which can be used to run user code and get notified in the loop thread. Its default size is 4, but

Answer 1

You shouldn't have spaces in your set command.

set UV_THREADPOOL_SIZE=120 && node index.js

Also you should start your Node.js program by invoking the start script:

npm start

Otherwise the environmental variable won't be set and you will continue to get undefined when accessing it in your code.

If you are using Nodemon, you can ensure your npm script is invoked by running the command with an extra argument:

nodemon --exec npm start