node modules

• npm, npx, npm [ init | audit | install | link | config | token | start | publish | run start | update | rebuild | ci | run build ] .env/, list | ls | --version , package.json, $HOME/.npmrc, npm help, NPM Registry, npm ERR!
• yarn [ create | list | up | add | run | install | build | transpile | transpile-watch | wsrun| version | --help ]