How to use pdf.js in vueJs project - vue.js

I'm trying to use pdf.js in a single page application made with vueJs and the composition API.
I've installed pdfjs-dist and pdfJs (I don't know what the difference is ) but I can't find the propoer way to import it to my components to use it.
Can someone tell me how to do it?
i tried this:
<script setup>
import pdfjsLib from "pdfjs-dist/build/pdf";
</script>
but it doesn't work. I get this error: You may need an appropriate loader to handle this file type, currently no loaders are configured to process this file.
I've also tried including pdfjs through a cdn with a script tag in the index.html... but then, It doesn't work. I try to follow a tutorial, but it doesn't work. I just get errors: numPages is not a function.
Can someone help me oout please?

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export default {
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I tried the simple things like
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Vue template render without all the extra

I have a very, very simple set of Vue components that all work. These are a simple addition on top of an existing C# app.
At the moment, these are .html files (brought into the app inside <script> tags) and .js files loaded by reference.
These all work, are very light weight, and I love it.
Now I want to compile the HTML for each component into a Vue render function, and the .js into one minified .js file.
The .js to .min.js is pretty standard, but I cannot figure out how to get the HTML to compile into the Vue render function. Everything I've found involves a LOT of overhead and running a web server which seems a massive overkill for an html->script transform, and I don't need a full web application spun up. I only need my existing, simple templates transformed to something more friendly for production than my long-form html templates getting dumped to the page.
I'm not entirely opposed to turning the .html+.js into .vue files, but just doing that doesn't seem to overcome my issue.
I cannot figure out how to get the HTML to compile into the Vue render function
To generate a render function from a Vue template string (e.g., read from an HTML file), you could use vue-template-compiler like this:
const compiler = require('vue-template-compiler')
const output = compiler.compile('<div>{{msg}}</div>')
console.log(output) // => { render: "with(this){return _c('div',[_v(_s(msg))])}" }
Everything I've found involves a LOT of overhead and running a web server which seems a massive overkill for an html->script transform
The "web server" you mention is provided by Webpack CLI, and is intended to faciliate development. You don't need to use the dev server. The article indeed describes several steps in manually setting up a project to build Vue single-file-components, but a simpler method is to use Vue CLI to automatically scaffold such a project.

Vue: Stripe is not defined - does stripe need to be included everywhere?

When I tried to include the stripe dependency only for the template where I need it (in laravel blade):
#push ('head_scripts')
<script src="https://js.stripe.com/v3/"></script>
#endpush
..I got the error 'ReferenceError: Stripe is not defined'. So I included it in my main "head" partial, so it was included everywhere. Then I ran into the same error when going into the admin section, because it's not included in that template.
But does it really need to be included everywhere?
It is only used in one vue component like this:
<script>
let stripe = Stripe(`pk_test_zzzzzzzzzzzzzzz`);
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let card = undefined;
This component seems to be evaluated even when it isn't rendered. Can I get around this issue in some way?
I was having this problem in a Vue app not using Laravel.
But to fix it i put the script <script src="https://js.stripe.com/v3/"></script> in my index.html
Then when referencing Stripe in a component i used window.Stripe That pointed to the script and fixed the ReferenceError: Stripe is not defined error.
Putting script in my index.html worked, but gave me performance issues when I published because it loads the script on every single page, instead of just where it's needed.
So instead I used import {loadStripe} from '#stripe/stripe-js/pure';. It delays loading Stripe until loadStripe is called.
This article helped me use the import:
Importing Stripe.js as an ES Module into Vue

How to add and run Three Js old code to Vue page component

I would like to know how I can add an old Three Js code to a page component in Vue Js, like just plain javascript grabed on html script tag, without using methods or computed objects from Vue
I'm using node 10.14, Vue-cli 3 and Vue scaffold
If I understand your question correctly, one way you could probably do this is to have the JavaScript extracted out into a helper file like /lib/3JS.js and then make sure to export it.
Then you could import it into your Vue file and use it there.

Standard way of Importing javascript modules into vue components

What is the correct way of importing javascript modules into vue-components?
I currently have a vue-component component.js:
Vue.component('component', {
name: 'component',
props: ['pdf'],
template: ` ...
I want to take a pdf-url as a prop and use pdf.js within the component, but I'm having trouble finding the right way/standard way to import pdf.js into my project.
Worth noting is that I'm not using vue-cli, or any other kind of bundler like Webpack, so my project structure might be a bit different from standard project structures. I access my components from a main.html file in which I have imported both vue and the components in script-tags in the head of the html. Would I simply import pdf.js in the same manner (head in the main.html file), or is there a "vue"-way of doing it?
If you are not using webpack or any other packager, then I will recommend you to stick to the old fashion way, just use pdf.js as script in your html and make use of the API as it is in the official documentation, such as: pdf.getPage(1).then(...)
Hope it helps.
Cheers