test-vm.js

"use strict";

function testRequire()
{
	console.time('require');
	const _ = require('./lodash');
	console.timeEnd('require');
	console.log( _.chain );
	// 52 33 33 33 33 33 msec
}

function testVM()
{
	console.time('vm');
	const vm = require('vm');
	const fs = require('fs');
	const content = `
		(function (exports, require, module, __filename, __dirname) {
			${fs.readFileSync('./lodash.js').toString()}
		})();`;
	const result = vm.runInThisContext(content, 'lodash-vm.js');
	console.timeEnd('vm');
	console.log( global._.chain );
	// 32 33 34 32 33 33
}

// testRequire();
testVM();