npm config fix #repair config
npm ci #clean install project using pkglock

#pkg version
npm i -E [email protected] #exact
npm i -S [email protected] #~1.2.latest
npm i -S pkg@4 #^4.L.L
npm i -P pkg #install as dependecy
npm i -D pkg #install as dev-dependency

npm ls --depth 0 #list installed packages
npm ls # + all dependency tree

npm outdated #list outdated pkgs
npm up [pkg] #update all or given
npm up --dev #only dev
npm prune #remove unused pkgs

npm view pkg #show info
npm explore pkg -- npm run cmd #run cmd

node -c your_script.js #syntax check
node -p "2 + 3"
node --watch index.js
node --v8-options | less
node --env-file=.env script.js
node --run start