NPM's ID card and dependence

npm ID card and dependence of

from npm Downloaded node_modules The contents of the folder are called “ rely on ”;

Use package.json To manage these dependencies , You need to create your own ID card

The first thing to do when developing a project is to create an ID card

npm init

Fill in the information enter Create   package.json The documents are as follows

At this time, some form information will be filled in, including your name 、 Version number 、 describe 、 Entrance file 、 The test command 、git Warehouse 、 key word 、 author 、 Copyright agreement

You can answer as needed , You can also enter directly without entering anything

This completes the creation of

With this ID card , When installing dependencies in the future, add —save

For example, press to install nzh modular

solarlunar modular

At this time package.json change

node_modules It's all interdependent , So if there are many modules introduced , At this time, if the physical file transfer is carried out, it will cause great , Particularly fragmented file content , Can not pass this node_modules Folder , Only pass the ID card ; So be sure to keep it with your ID card , Before the next use , reinstall

In the future, you just need to be in the corresponding package.json Enter... In the directory

npm isntall

here NodeJS and npm It will retrieve the package.json Inside the document dependencies And then install