Does module.exports work differently in webpack?

Question

In this tutorial the author uses this code to exemplify exporting code:

// sum.js

var sum = function (a, b) {
    return a + b;
};
module.exports = sum;

But isn't this wrong? I thought the module.exports is an object and you're suppose to assign the key of sum to it and the value of the function to it similar to something like what this other article did -

// greetings.js

// var exports = module.exports = {};

exports.sayHelloInEnglish = function() {
  return "HELLO";
};

exports.sayHelloInSpanish = function() {
  return "Hola";
};

. Did the first author mess up?

Answer 1

module.exports is just a reference of what will be returned from require() . You can set its value to an object containing methods as well as you can just set it's value to a function or any other assignable value.