get-dependencies 
Install
as a CLI tool
npm install --g get-dependencies
Programatically
npm install get-dependencies --save
Usage
CLI
Usage: get-dependencies [options] [path]
Get the dependencies of a package.json
Options:
-h, --help output usage information
-V, --version output the version number
-m, --module <name> Get the package.json of a npm module
-u, --url <url> Get the package.json from a url
-j, --json Print the dependencies as a JSON
-c, --copy Copy the dependencies to the clipboard
Programatically
var getDeps = require('get-dependencies');
getDeps.getByFile('/path/package.json')
.then(function (result) {
// result is an array of the dependencies
});
getDeps.getByName('package-name')
.then(function (result) {
// result is an array of dependencies of the npm package
});
getDeps.getByUrl('http://url.to/package.json')
.then(function (result) {
// result is an array of dependencies of the npm package
});