Learn TypeScript 3 by Building Web Applications

Installing dependencies with npm

You can install any npm package in any folder containing a package.json file, using npm install <options> <package_name>.

After executing npm install a few times, you might wonder where those packages might be getting installed. First off, you need to know that npm packages can be installed in two different ways:

• Locally: By default, npm packages are installed in the current folder, under node_modules/. For example, if you execute npm install lodash in the current folder, then npm will create the following folder structure for you: ./node_modules/lodash. Usually, you'll install most, if not all, of your project dependencies locally.
• Globally: If you pass the --global or -g flag to npm install, then the package ...