Install package from the github repository

Installs directly from the latest version of the repository upto the latest commit

npm i <package-name>/<repo-name>

npm i express/express

Install without actually installing

Would not actually install express but would report on the version that would be installed with the command

npm i --dry-run <package-name>

npm i --dry-run express

View dependency tree or dependency tree with info

list names of all packages and view names with description of all packages

npm ls
npm ll

-g --depth=0 --json

• -g list all globally installed packages with dependency sub-tree for every package
• --depth=0) levels of trees,0 = only 1st level, 1 = first child etc
• --json shows the output in json format

flags while installing dependencies

-S / -s - production
-D / -d - development
-O / -o - optional (used only if installed)

Check for outdated packages

can be used with -g flag for global

npm outdated 

Change configuration for npm

• lists all options that can be changed

npm config list -l

• default values can be set using

npm config set <variable-to-be-set> "<string-value>"

eg: npm config set init-author-name "John Doe"

• values can be removed as well

npm config delete <variable-to-delete>

• all installs will have -s flag everytime, is by default true

npm config save true

• searches for the word in the package tree

npm search <word>

• locks dependecies, versioning won't help, always the locked versions will be installed

npm shrinkwrap

• opens the home page or repository for the package in the default browser

npm home <package-name>
npm repo <package-name>

• removes packages installed without mention in package.json

npm prune