Multiple importmaps

[manuelmeurer]

Multiple importmaps

[deanpcmad]

I'd also like to see this. Would be very useful for splitting up public/admin JS

[aseroff]

I +1 the need for this.
An approach I was considering taking is keeping a single importmap (since having unnecessary pins doesn't make a significant difference), but changing the pin's preload based on the provided import module tag.

To illustrate: javascript_importmap_tags expands to the importmap, the preloads, and the initial module import defined by the provided entry_point parameter. If we passed the entry_point parameter to javascript_importmap_module_preload_tags, we could enable the preloading to be defined by something like pin 'admin', preload: [:admin] in config/importmap.rb. The result would accomplish the desired result without having to maintain multiple importmaps.

If this seems agreeable I could throw a PR together.

[manuelmeurer]

@deanpcmad Feel free to use my fork/branch as described in the PR for now: #241
I use it in production and it works great!

[sarmad90]

@manuelmeurer that's great. Let me know if you need any help in completing the PR. I would be happy to help.

[sarmad90]

@manuelmeurer I have added some comments on the PR.