stlviewer | Display and manipulate the content of STL files

I'm currently trying to set up a basic .stl viewer with the possibility to preview different materials on the model itself. I have Angular 9 as framework and the whole .stl showing part is working quite fine and easy. When I try to update the Material it's simply not updating it, but showing a very strange basic material I assume. Like mentioned in the heading I'm currently using a GitHub project based on Three.js which can be found here: https://github.com/tevim/angular-stl-model-viewer

Like mentioned in the Three documentation I tried to set the material.needsUpdate and also the texture.needsUpdate flag, both without any effect.

I'm trying to run these javascript files in an Angular 7 application. I've run it successfully in an Angular 6 application by doing the following basics:

• Copied the .js files to the application, keeping the web worker files (load_stl.min.js and parser.min.js) in the root directory and the rest of the files in assets/scripts.

• Add the .js files to my scripts array in angular.json in this working order

  ...

I had this working with their remotely hosted option, but it was rather slow. I've wasted many hours trying to get the JS plugin to work.

I can't get the 3d model to display inside the div, as shown in their guide here: https://www.viewstl.com/plugin/#usage .

I have the div container on my page, as so:

I’m using React and want to show STL files in my app, more specifically, colored STL files. I have a binary STL colored file. Take for example a colored STL file from the three.js official website: https://threejs.org/examples/models/stl/binary/colored.stl. You can see the colored file properly in http://www.viewstl.com/. I saw that there are some packages like stl-viewer that shows very nicely STL files, but the color for the file needs to be added within the app.

I tried using stl-viewer using modelColor with unset.