Get a list of all NPM linked packages

npm-linked-pkgs.js

var util = require('util');
var exec = require('child_process').exec;

function getNpmLinkedPackages (callback) {
    exec('npm list --global', function (error, stdout, stderr) {
        if (error) return callback(error);
        if (stderr.length > 0) return callback(stderr);
        
        var pkgs = stdout
            .split('\n')
            .filter(function (line) { return line.split(' ')[0].length == 3; })
            .map(function (line) { var l = line.split(' '); return [l[1], l[3]]; })
            .reduce(function(pkgs, pkg, i) {
                pkgs[pkg[0]] = pkg[1];
                return pkgs;
            }, {});

        callback(undefined, pkgs);
    }); 
}

// Test
getNpmLinkedPackages(function (err, pkgs) {
    if (err) return console.error(err);
    console.log("Linked packages", pkgs);
});