perform function that is within a Javascript Extract

Question

I’m trying to use functions that are inside an export, for example the BigInteger, in fact they are all:

http://travistidwell.com/jsencrypt/bin/jsencrypt.js

but need to use them in another file not to need to repeat, it is possible?

Answer 1

It will not be possible to access all internal functions, but you can access what is exported from that module.

Explanation: When you have a structure like:

(function (exports) {
    function a() {
        alert('oi');
    }
})(escopo);

that function a is within a scope that does not allow to be accessible outwards. This uses a lot to limit the scope of functions and not pollute the global space with variable names.

Notice that in that file you mentioned:

exports.JSEncrypt = JSEncrypt;
})(JSEncryptExports);

i.e., it exports to the object/variable that is passed to JSEncryptExports.

So some functions you will never have access to, but the methods that are spouses you can find in JSEncryptExports. And that way you can reuse the code.

It’s commum to use like this when you want to export to global space:

(function(global){
     // código A aqui...
     global.meuModulo = function(a, b, c){
         // código que tem acesso aos métodos defenidos no "código A"
     }
})(typeof exports != 'undefined' ? exports : window);

This way works both in Nodejs and in the Browser.