My idea and approach to Inline JS functions for use with ES6 modules with Laravel Mix and Craft CMS

0. Intro.md

So I am looking to inline certain JS functions and pieces of code for some third parties (sliders, light-boxes, galleries etc). The reason for this is so I can keep specific and relevant javascript together with the twig code for that specific module/component. Rather than splitting it over a twig file and a separate js file(s).

A good example and use-case of this is Swiper (https://swiperjs.com/).

Below is a basic setup on how this is structured and my ideal approach. Files have been numbered for clarity and order over explanation.

Concerns and Qustions:

1. Is window.Swiper = Swiper; the best way to do this or is there another/better method?
2. Do you forsee any issues or pitfalls with this approach?
3. Is this likely to have any negative effect in terms of performance and inlining JS, if there were potentially a few modules on a page, like a swiper, a gallery and a an-other.
4. Any general thoughts, considerations or concerns on this method and approach?

1. webpack.mix.js

//Abridged version of my mix code foucussing on the JS aspect only.

// JS to Concatenate and Minify JS files using Webpack bundler.
mix.js(settings.paths.src.js + 'index.js', settings.paths.build.js)

// Extract splits the JS into Vendor, Manfiest and Index
mix.extract()

2. index.js

//index.js is located in src/js/ folder and is the primary js for the webesite.
//Abridged version of my primary js file foucussing on the above use case.

import Swiper from 'swiper';

//Add the follwiing for each third part include to allow this to be accessible in the global scope. 
window.Swiper = Swiper;

3. layout.twig

//Layout showing the JS code included after the body tag.
//Abridged version of my layout twig file foucussing on the javscaript includes.

//Currently using Twigpack plugin, but the commented code below uses traditional methods. 
{{ craft.twigpack.includeJsModule("/js/manifest.js") }}
{{ craft.twigpack.includeJsModule("/js/vendor.js") }}
{{ craft.twigpack.includeJsModule("/js/index.js") }}


{#<script src="/assets/js/manifest.js" type="module"></script>#}
{#<script src="/assets/js/vendor.js" type="module"></script>#}
{#<script src="/assets/js/index.js" type="module"></script>#}

4. project-carousel.twig

//A compoent which would be included, embeded or part of a twig template that would mostly be a reusbale design module throughot the website, this might be driven via a mtrix block or standard content block in the CMS.
//Abridged version of my layout twig file foucussing on the javscaript includes.

{# ------------------------------------------------------------------- #}
{# CAROUSEL  #}
{# ------------------------------------------------------------------- #}
<div class="swiper-container js-swiper-projects w-full h-full relative">
  <div class="swiper-wrapper">
    {% for entry in caseStudies %}
      {% set lazyload = loop.first ? 0 : 1 %}
      <div class="swiper-slide flex w-full h-auto pb-12">
        <div class="w-full h-auto">
          <div class="bg-black absolute inset-x-0 w-full h-full z-20 opacity-50"></div>
          <div class="absolute inset-x-0 w-full h-full z-10">
            {% include '_includes/_partials/image-blurred.twig' with { image: entry.headlineImages[0], lazyLoad: lazyload } %}
          </div>
          
          {% if entry.relatedAwards|length %}
            <div class="absolute">
              <div class="mt-6 lg:mt-12 bg-white max-w-md relative z-30 py-2 pr-4 text-right pl-12 //// carousel__award">
                <div class="flex items-center justify-end text-yellow-600">
                  {{ svg('@icons/star-full.svg', class="w-5 h-5 flex-shrink-0 fill-current mr-2") }}
                  <h3 class="mb-0 text-16">Award Winning Project</h3>
                </div>
              </div>
            </div>
          {% endif %}
          
          <div class="block md:hidden relative z-20 // fade-in-top">
            {% include
              '_includes/_components/image.twig' with {
              image:entry.headlineImages[0],
              transform: '16x12',
              classes: 'w-full',
              widths: [1536, 1200, 1000, 768, 600, 500, 352, 176],
              srcWidth: 768,
              sizes:'(min-width:1024px) 50vw, 100vw',
              lazyLoad: lazyload
            } %}
          </div>
          
          
          <div class="container // p-6 md:p-12 md:flex md:items-center relative z-20 md:pt-24 lg:pt-12">
            <div class="md:w-1/2 text-white md:pr-12">
              <div class="max-w-xl mb-12 /// carousel__copy">
                <h3 class="uppercase font-black text-white text-21 mb-3 md:hidden">{{ entry.title }}</h3>
                {{ entry.teaserBody }}
              </div>
              
              <div class="pl-3">
                {% macro feature(label, handle) %}
                  {%- if handle|length -%}
                    <li class="pr-6 mb-6 text-white text-14 //// w-1/2">
                          <span class="uppercase text-12 font-black block mb-0">
                            {{ label }}
                          </span>
                      {{ handle }}
                    </li>
                  {%- endif -%}
                {% endmacro %}
                
                <ul class="flex flex-wrap mb-12 // carousel__features">
                  {{ _self.feature('Value', entry.projectValue) }}
                  {{ _self.feature('Duration', entry.projectDuration) }}
                  {{ _self.feature('Location', entry.projectLocation) }}
                </ul>
                
                <a href="{{ entry.url() }}" class="text-white flex justify-between items-center border-b border-white pb-1 max-w-200 /// carousel__link mb-6 lg:mb-0">
                  Read Case Study
                  {% include '_includes/_partials/link-arrow.twig' %}
                </a>
              </div>
            </div>
            
            <div class="hidden md:block md:w-1/2 overflow-hidden">
              <article class="border border-white-alpha-50 p-4 max-w-xl /// carousel__card">
                <div class="">
                  {% include
                    '_includes/_components/image.twig' with {
                    image:entry.headlineImages[0],
                    transform: '16x12',
                    classes: 'w-full',
                    widths: [1536, 1200, 1000, 768, 600, 500, 352, 176],
                    srcWidth: 600,
                    sizes:'50vw',
                    lazyLoad: lazyload
                  } %}
                </div>
                <div class="bg-white-alpha-80 text-gray-700 p-6 //">
                  <div class="carousel__card__content">
                    <h3 class="uppercase font-black text-lime-700 text-21 mb-3">{{ entry.title }}</h3>
                    <p>
                      Holland Park Villas is a high end private gated residential development of 68 apartments and 4 penthouses, with two acres of private landscaped grounds…
                    </p>
                    
                    <a href="{{ entry.url() }}" class="text-lime-700 flex justify-between items-center border-b border-lime-700 pb-1 max-w-200">
                      View Project
                      {% include '_includes/_partials/link-arrow.twig' %}
                    </a>
                  </div>
                </div>
              </article>
            </div>
          </div>
        </div>
      </div>
    {% endfor %}
  </div>
  <!-- If we need pagination -->
  <div class="swiper-pagination"></div>
  
  <!-- If we need navigation buttons -->
  {% set btnClasses %}
    text-white // p-1 w-12 h-12 // flex flex-col items-end items-center justify-center //  to-lg:top-auto to-lg:bottom-0 to-lg:bg-gray-900 hover:bg-lime-500
  {% endset %}
  
  <div class="swiper-button-prev {{ btnClasses }}  to-lg:-ml-3">
    {{ svg('@icons/arrow-thin-left.svg', class="w-6 h-6 fill-current") }}
  </div>
  <div class="swiper-button-next {{ btnClasses }}  to-lg:-mr-3">
    {{ svg('@icons/arrow-thin-right.svg', class="w-6 h-6  fill-current") }}
  </div>

</div>


{% js %}
var swiperProjects = new Swiper('.js-swiper-projects', {
  // Optional parameters
  loop: true,
  autoplay: {
    delay: 5000,
    stopOnLastSlide: true,
    disableOnInteraction: true
  },
  centeredSlides: true,
  speed: 600,
  effect: 'fade',
  
  // If we need pagination
  pagination: {
    el: '.swiper-pagination',
    // bulletElement: 'li',
    clickable: true,
  },
  
  // Navigation arrows
  navigation: {
    nextEl: '.swiper-button-next',
    prevEl: '.swiper-button-prev',
  },
});
{% endjs %}

5. simple.twig

//A shortened version of a twig compenent for easier clarity.

<div class="swiper-container js-swiper-projects w-full h-full relative">
  <div class="swiper-wrapper">
    SWIPER HTML/TWIG CODFE HERE FOR EACH SLIDE OR LOOP
      <div class="swiper-slide">
       Slide Code
      </div>
  </div>
</div>

{% js %}
var swiperProjects = new Swiper('.js-swiper-projects', {
  // Optional parameters
  loop: true,
  autoplay: {
    delay: 5000,
    stopOnLastSlide: true,
    disableOnInteraction: true
  },
  centeredSlides: true,
  speed: 600,
  effect: 'fade',
  
  // If we need pagination
  pagination: {
    el: '.swiper-pagination',
    // bulletElement: 'li',
    clickable: true,
  },
  
  // Navigation arrows
  navigation: {
    nextEl: '.swiper-button-next',
    prevEl: '.swiper-button-prev',
  },
});
{% endjs %}