Preventing relative require calls from modules in a specific folder

Question

This will sound odd, but I'd like all modules in a specific directory to only be able to require resources out of node_modules and not from any other part of the application.

In a specific directory:

• require('fs') -- should work
• require('../../something') -- denied
• require('./another') -- denied

Is anything like this remotely possible in Node?

Answer 1

You could make a module that'll act like a require-proxy:

module.exports.require2 = function() {
    if (arguments[0][0] !== '.') {
        return require.apply(this, arguments);
    } else {
        throw new Error('Can\'t require relative modules');
    }
}

Of course, this would be opt-in by the developers:

var require2 = require('require2');
var fs = require2('fs'); //everything's good
var fss = require2('./fss'); //throws an error

Kind of a similar idea to thlorenz's proxyquire .