module.exports = function stub(stubs) { if (0 === stubs.length) { return; } const {Module} = require('module'); const {require: Mr} = Module.prototype; Module.prototype.require = function hackedRequire(request, options) { for (let i = 0; i < stubs.length; ++i) { if (request.match(stubs[i])) { return undefined; } } return Mr.call(this, request, options); }; };