Check package version at runtime in nodejs?

Question

I have some of my entries in package.json defined as "*"

"dependencies": {
    "express": "4.*",
    "passport": "*",
    "body-parser": "*",
    "express-error-handler": "*"
},

I wan't to freeze those values to the current version. How can I know what version my packages are at run time? I don't mind checking one by one since I don't have many of them :)

BTW: I cannot do npm list --depth=0 because I cannot access the vm directly (PaaS restriction), just the logs.

Answer 1

You can use the fs module to read the directories in the node_modules directory and then read package.json in each of them.

var fs = require('fs');
var dirs = fs.readdirSync('node_modules');
var data = {};
dirs.forEach(function(dir) {
    try{
    var file = 'node_modules/' + dir + '/package.json';
    var json = require(file);
    var name = json.name;
    var version = json.version;
    data[name] = version;
    }catch(err){}
});
console.debug(data['express']); //= 4.11.2