使用带有 node.js 的 require 加载远程 js 文件

Question

I've been working on an online socket server using NodeJS and javascript, and I've been creating "playrooms" in my code using require:

new_game_obj = require('./forza4.js');

Now.. this works find when I test my code on my local machine, but for the production server I've been presented with a problem. It would seem that for some technical reason, the process that runs my code is on a different machine then the one I have access to (for file uploading, and such), so I was asked by the guys on the server farm to change my code so that I will load the code I have in "forza4.js" from a global position, and not local, like I do at the moment. So I changed the code to this:

new_game_obj = require('http://www.xxxxx.com/blabla/forza4.js');

(Of course I tested to see if the file is there, just to be sure, it shows in the browser when I point to that actual address) But I get an error from my code (again, at this point, I'm running this locally on my machine), which says:

Exception: Error: Cannot find module ' http://www.xxxxx.com/blabla/forza4.js '

So just to be on the safe side, I did:

new_game_obj = require('http://92.xx.xx.xx/blabla/forza4.js'); 

But again, the same error.

Should there be a problem loading an "extension" to my code from a remote server, or am I just formatting the "require" call wrong?

Thanks a bunch!

Yuval.

PS This is a follow up to this thread: This is the older and resolved post

Answer 1

Take a look at the node.js modules docs

Specifically, refer to the require algorithm

Within node.js, require calls are synchronous, so it's not possible to load files that are not on your file system (ie, from an external url).

Update

You could fetch the code through an http request - or, even better, an https request and run it with the built-in vm module - or even with eval , but that seems not a good idea - as suggested on this old question .

Something like

https.get( 'https://www.xxxxx.com/blabla/forza4.js', function( res ){
  res.on( 'data', function( data ){
    vm.runInThisContext( data, 'remote/forza4.js' );
  });
});

Note : I did not test this code

Sure it isn't the best solution, but is a solution.

Answer 2

How about the 'require from URL' NPM package?

Just found it - not tried it, yet! https://www.npmjs.com/package/require-from-url