How does webpack, gulp, grunt, node work, or rather access to config files?

Question

Node.js

How does webpack , gulp , grunt , node work , or rather access to config files ? There are different gulpfile.js , webpack.config.js , Gruntfile.js , package.json . And how is it all set up? How can these modules access these files? How do they contact them?

Answer 1

I think for "webpack, gulp, grunt" - the fs module (you can refer to files on your computer in your node.js script).
For node, you need to google a level deeper and see how this fs module is written.