Load assets of extension

[LukasHirt]

At the moment we load only the js bundle of extension. We need to be able to also load assets in case there are any (e. g. images)

[LukasHirt]

Possible solution - use import.meta.url which returns URL where the module is located and access assets with that URL. This is not supported in Edge. Seems that polyfill already exists though https://www.npmjs.com/package/es-module-shims

So the next tasks are:

• Test loading assets with this solution
• Test polyfill for Edge
• Document it so it's available for extensions developers.

[dschmidt]

Using import.meta.url might have become much easier as we're switching to native modules in #7952

[pascalwengerter]

Is this issue still relevant given the progress that has been achieved in the overall project and extension system?

[dschmidt]

import.meta.url can be used as @LukasHirt pointed out.

c.f. https://github.com/dschmidt/web-app-gpx-viewer/blob/1c0ecfc52fc217bb1a1b4279b7ea445b9d78b1fa/src/composables/useLeaflet.ts#L16