How to interact with command line through nodejs?

Question

Command line

How to interact with the command line through nodejs or through another language (heard some)?

For example , a person wants to compile the app.js file using webpack, he writes in c.s. command:

webpack

Webpack finds the config, tyry pyry and you get the finished bundle.

How is it implemented? How did they add their team to k.s.? .cmd file?