An in-depth guide on implementing the Module Pattern in Typescript for an established JavaScript Module Pattern

I am relatively new to both Javascript and Typescript. I have been tasked with converting Javascript code to Typescript. I have come across a Module pattern that seems to return itself instead of exposing private methods and properties (please correct me if I'm mistaken). I'm not sure how to approach this situation.

var MySocket = (function () {


    function MySocket(location, openCallback, closeCallback, errorCallback) {
        //Code Goes Here
    }



    MySocket.prototype.Open = function () {
        //Code Goes Here
    }

    MySocket.prototype.Close = function () {
        //Code Goes Here
    }



    return MySocket;
})();

Answer №1

The revealing module pattern is what this is known as. TypeScript still allows you to implement this pattern. A more 'modern' approach would involve getting rid of the IIFE and the return statement, and instead utilizing an export modifier on MySocket:

export function MySocket(location, openCallback, closeCallback, errorCallback) {
   //Your code here
}

MySocket.prototype.Open = function () {
  //Your code here
}

MySocket.prototype.Close = function () {
  //Your code here
}

However, there are some differences in how it is used. ES6 modules are meant to be imported from other ES6 modules using the import statement rather than just referencing the variable by its name:

import { MySocket } from './MySocket'

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