Script to search and print top-level module versions for NPM's package.json file (dependencies). Run in project root.

versions.js

var fs = require('fs');

var res = {};
var base = process.cwd() + '/node_modules';
var dirs = fs.readdirSync(base);
for(var i = 0; i < dirs.length; i++) {
	var module = dirs[i];
	var bdir = base + '/' + module;
	var cfg = bdir + '/package.json';
	var ok;
	try { ok = fs.lstatSync(cfg).isFile(); } catch(e) {}
	if(!ok) {
		console.log('skipping: ' + bdir);
		continue;
	}
	try {
		var config = JSON.parse(fs.readFileSync(cfg));
		if(config.version)
			res[module] = config.version;
		else
			console.log('No version information for module ' + module);
	}
	catch(e) {
		console.log('error during parsing: ' + cfg, e.stack);
		process.exit(1);
	}
}
console.log(JSON.stringify(res, null, '\t'));

Requested to be added to NPM core: https://github.com/isaacs/npm/issues/2105