test/fixtures/cjs-module-wrap.js

'use strict';
const assert = require('assert');
const m = require('module');

global.mwc = 0;
m.wrapper[0] += 'global.mwc = (global.mwc || 0 ) + 1;';

require('./not-main-module.js');
assert.strictEqual(mwc, 1);
delete global.mwc;