Is it possible to get a different scope for a required file?

Question

Assume I have this example file called import.js

var self;
function Test(a,b){
   this.a = a;
   this.b = b;
   self = this;
}
Test.prototype.run = function(         


        

Answer 1

Answering my own question here, but there are at least two ways this is possible....

(1) Deleting Cache

How to remove module after "require" in node.js?

var Test1 = require('./import.js');
delete require.cache[require.resolve('./import.js')]
var Test2 = require('./import.js');

var one = new Test1(1,2);
var two = new Test2(3,4);

one.run()
1 2
two.run()
3 4

Doesn't even look that messy, although it's grossly inefficient and would get costly very fast to write code this way...

---

(2) Using function Scope

Because require reads the file and then runs it,

var Test = require('./test.js');

is equivelent to

var Test = eval( fs.readFileSync('./test.js', 'utf8') );

So, if instead of using require, you read the file you can establish new scopes inside of functions:

var fs = require('fs');
var File = fs.readFileSync('./import.js', 'utf8');
var Test1, Test2;
(function(){ Test1 = eval(File); })();
(function(){ Test2 = eval(File); })(); 

The self inside the file would now be stored inside the function scope you created. so once again:

var one = new Test1(1,2);
var two = new Test2(3,4);

one.run()
1 2
two.run()
3 4

Slightly messier, but far faster then deleting the cache and re-reading the file every time.