How to export methods to another module

Question

How to export methods to another module

I have object extends from event:

var A = function () {
    EventEmitter.call(this);
};

inherits(A, EventEmitter);

var a = module.exports =  Object.create(new A());

A.prototype.method = module.exports = function f(arg1,arg2){}

On another module I make:

var controller = require('./filename');

function main(){
    controller.f(arg1,arg2);
}

I guess something with the require/export is wrong but I couldn't find what.

javascript
node.js

Answer 1

Try this:

var A = function() {
    EventEmitter.call(this);
};

inherits(A, EventEmitter);

var a = module.exports = new A();

A.prototype.f = function(arg1, arg2) {
    console.log("Hello, world!");
}

Your folly was to reassign module.exports a second type. This should do what you want; namely, the export of the module is an instance of A, such that require('./controller') returns the A instance, and you can call f(arg1, arg2) on that.

By the way, the Object.create() was extraneous.