graphify.js

var fs = require('fs'),
    npm = require('npm'),
    _ = require('lodash'),
    madge = require('madge');

module.exports = function() {
    var obj = {};

    npm.load({production:true,json:true}, function(err, npm) {

        npm.commands.ls([], function(err, full, tree) {
            generateDependencyTree(tree.name, tree);

            madge(obj).image({
                layout: 'dot',
                fontFace: 'Arial',
                imageColors: {
                    bgcolor: '#0b2536',
                    edge: '#b24747',
                    dependencies: '#a8f2c3',
                    fontColor: '#f1f0ef'
                }
            }, function(img) {
                fs.writeFile('image.png', img, 'base64', function(err) {
                    if (err) {
                        console.log(err);
                    }
                });
            });

        });

    });

    function generateDependencyTree(name, tree) {
        if (!tree.dependencies) {
            return;
        }

        var deps = getDependencies(tree.dependencies);

        if(_.isUndefined(obj[name])) {
            obj[name] = deps;
        }

        _.forEach(deps, function(dep, i) {
            if (tree.dependencies[dep]) {
                generateDependencyTree(dep, tree.dependencies[dep]);
            }
        });
    }

    function getDependencies(dependencies) {
        return _.filter(Object.keys(dependencies), function(dep) {
            return dep.indexOf('bbc-morph') > -1;
        });
    }

}();