npm-install | npm Docs
docs.npmjs.com › cli › v6npm install (in package directory, no arguments): Install the dependencies in the local node_modules folder. In global mode (ie, with -g or --global appended to the command), it installs the current package context (ie, the current working directory) as a global package.
install | npm Docs
https://docs.npmjs.com/cli/v7/configuring-npm/installinstall Download and install node and npm Version 7.x (Legacy release) Description To publish and install packages to and from the public npm registry, you must install Node.js and the npm command line interface using either a Node version manager or a Node installer. We strongly recommend using a Node version manager to install Node.js and npm.