How to optimize the process of installing NPM/Gulp/Grunt packages?

Question

npm

After writing configs for gulp/grunt and running the command npm i, the prescribed dependencies are installed.
This process sometimes takes a long time - for example, in case of a bad connection. The size of downloaded dependencies sometimes exceeds 100mb. In this case, the installation of bower and npm dependencies is performed in each folder with the initiated npm i.
Can this process be optimized to take less time?
Probably some kind of local component cache on the PC you're using - how do I set it up?
Also, dependencies like jade and stylus are copied every time to every working folder., while they already exist in the installed node.js distribution on the computer - why and is it possible to avoid such duplicates?
I respect any comments on the topic.

Answer 1

- https://docs.npmjs.com/cli/cache
- bower cache

Answer 2

The most important thing is the local node_modules folder. Copy node_modules folders from project to project, can be mixed with others. You can install some, copy some from another project. I do just that - I transfer the folder from project to project through transfer to far or total commander.
I am sure that 90% of your dependencies are the same on any project.