Combining the revealing module pattern with the features of ES6 modules

I'm unsure about the best approach when it comes to using ES6 modules and the revealing module pattern. Is the data/functionality in an ES6 module as secure as in an IIFE?

Should I stick with just ES6 modules, like this:

// Export file

export const test = () => {
 console.log('Hello from test');
}

// Import file

import { test } from "./test.js";

test();

Or would it be better to use a combination of both:

// Export file

export const revealingPattern = (function() {
    function test() {
        console.log('Hello from test');
    }

    return {
        test
    }
})();

// Import file

import { revealingPattern } from "./test.js";
revealingPattern.test();

Answer №1

The primary goal of the revealing module pattern is to maintain data encapsulation, but with ES6 modules, the top level is inherently private - variables declared within it do not spread to the global scope (unless they are explicitly assigned to the global object, as in window.foo = 'foo').

Therefore, in an ES6 module, utilizing the revealing module pattern becomes somewhat unnecessary - you have the freedom to define any variables at the top level, which will only be accessible within the module itself. Then, by using export, you can selectively reveal what needs to be revealed while keeping everything else securely enclosed.

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