Node.js run module with a different `this` context.

node-change-this-context.md

Node.js run module with a different this context.

Sources:

• Dependency Injection with Node.js
• vm

// index.js

var vm = require('vm');
var fs = require('fs');
var path = require('path');

// create mock window
var jsdomify = require('jsdomify').default;
jsdomify.create();

// create context
var exports = {};
var context = window;
context.require = require;
context.console = console;
context.exports = exports;
context.module = { module: { exports: exports } };
context.window = window;

// run script in context
var script = fs.readFileSync(path.join(__dirname, './module'));
vm.runInNewContext(script, context);

// module.js

if (typeof window !== 'undefined' && this === window) {
    console.log('browser environment');
} else {
    console.log('node environment');
}