Problems loading babylon via es modules

Bugs
23

@RaananW @brianzinn I think I got it working at least for my case.
It works when I use the relative path for babylonjs/core like:

import {
  Color3,
  MeshBuilder,
  Quaternion,
  StandardMaterial,
  Vector3,
} from "../node_modules/@babylonjs/core/index.js";

Which for my demo / development is ok.
But in general it comes down to BabylonJS not working with importmaps as it doesn’t work if I try to load it like this:

<script type="importmap">
      {
        "imports": {
          "@babylonjs/core": "https://unpkg.com/@babylonjs/core@5.28.0/index.js"
        }
      }
    </script>

I’m getting ton of CORS errors in the console

Access to script at 'https://unpkg.com/@babylonjs/core@5.28.0/Shaders/ShadersInclude/pbrBlockNormalGeometric.js' from origin 'http://localhost:3000' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource.
pbr.fragment.js:42          GET https://unpkg.com/@babylonjs/core@5.28.0/Shaders/ShadersInclude/pbrBlockNormalGeometric.js net::ERR_FAILED 502
localhost/:1 Access to script at 'https://unpkg.com/@babylonjs/core@5.28.0/Materials/Node/Blocks/Fragment/TBNBlock.js' from origin 'http://localhost:3000' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource.
clearCoatBlock.js:11          GET https://unpkg.com/@babylonjs/core@5.28.0/Materials/Node/Blocks/Fragment/TBNBlock.js net::ERR_FAILED 502
localhost/:1 Access to script at 'https://unpkg.com/@babylonjs/core@5.28.0/Shaders/ShadersInclude/pbrDebug.js' from origin 'http://localhost:3000' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource.
pbr.fragment.js:59          GET https://unpkg.com/@babylonjs/core@5.28.0/Shaders/ShadersInclude/pbrDebug.js net::ERR_FAILED 502
localhost/:1 Access to script at 'https://unpkg.com/@babylonjs/core@5.28.0/Shaders/ShadersInclude/sceneVertexDeclaration.js' from origin 'http://localhost:3000' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource.
shadowMapVertexDeclaration.js:3          GET https://unpkg.com/@babylonjs/core@5.28.0/Shaders/ShadersInclude/sceneVertexDeclaration.js net::ERR_FAILED 502
localhost/:1 Access to script at 'https://unpkg.com/@babylonjs/core@5.28.0/Shaders/ShadersInclude/pbrBlockNormalFinal.js' from origin 'http://localhost:3000' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource.
pbr.fragment.js:44          GET https://unpkg.com/@babylonjs/core@5.28.0/Shaders/ShadersInclude/pbrBlockNormalFinal.js net::ERR_FAILED 502
localhost/:1 Access to script at 'https://unpkg.com/@babylonjs/core@5.28.0/Shaders/ShadersInclude/pbrBlockClearcoat.js' from origin 'http://localhost:3000' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource.
pbr.fragment.js:38          GET https://unpkg.com/@babylonjs/core@5.28.0/Shaders/ShadersInclude/pbrBlockClearcoat.js net::ERR_FAILED 502
localhost/:1 Access to script at 'https://unpkg.com/@babylonjs/core@5.28.0/Shaders/ShadersInclude/pbrDirectLightingFalloffFunctions.js' from origin 'http://localhost:3000' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource.
pbr.fragment.js:23          GET https://unpkg.com/@babylonjs/core@5.28.0/Shaders/ShadersInclude/pbrDirectLightingFalloffFunctions.js net::ERR_FAILED 502
localhost/:1 Access to script at 'https://unpkg.com/@babylonjs/core@5.28.0/Shaders/ShadersInclude/pbrBlockSheen.js' from origin 'http://localhost:3000' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource.
pbr.fragment.js:37          GET https://unpkg.com/@babylonjs/core@5.28.0/Shaders/ShadersInclude/pbrBlockSheen.js net::ERR_FAILED 502
localhost/:1 Access to script at 'https://unpkg.com/@babylonjs/core@5.28.0/Shaders/ShadersInclude/pbrBlockReflectance0.js' from origin 'http://localhost:3000' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource.
pbr.fragment.js:48          GET https://unpkg.com/@babylonjs/core@5.28.0/Shaders/ShadersInclude/pbrBlockReflectance0.js net::ERR_FAILED 502
localhost/:1 Access to script at 'https://unpkg.com/@babylonjs/core@5.28.0/Shaders/ShadersInclude/geometryVertexDeclaration.js' from origin 'http://localhost:3000' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource.
geometry.vertex.js:8          GET https://unpkg.com/@babylonjs/core@5.28.0/Shaders/ShadersInclude/geometryVertexDeclaration.js net::ERR_FAILED 502
localhost/:1 Access to script at 'https://unpkg.com/@babylonjs/core@5.28.0/Compute/computeShader.js' from origin 'http://localhost:3000' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource.
index.js:2          GET https://unpkg.com/@babylonjs/core@5.28.0/Compute/computeShader.js net::ERR_FAILED 520