asset_pack_path should resolve other than stylesheets in dev mode

[tai2]

webpacker/lib/webpacker/helper.rb

Lines 13 to 17 in b5ec706

	def asset_pack_path(name, **options)
	unless Webpacker.dev_server.running? && Webpacker.dev_server.hot_module_replacing?
	asset_path(Webpacker.manifest.lookup!(name), **options)
	end
	end

As long as I see above code, asset_pack_path returns empty in HMR mode.

<%= asset_pack_path 'images/calendar.png' %>

So, this yields nothing.

I think assets other than stylesheets(.png, .svg, etc) should be put by asset_pack_path even in HMR mode.

[gauravtiwari]

@tai2 Ahh yes this is a bug. Could you please make a PR?

[tai2]

@gauravtiwari I'll try it. Wait a minute.

[gauravtiwari]

thanks

[tai2]

@gauravtiwari

With target file name given, what we can do is checking the file name extension.
But what extensions are those of stylesheets?

The simplest solution is hard-coding the stylesheet extensions such as .css, .scss, .sass
or .less in the code then matching these against name argument. In this case, if users register a new file extension for stylesheets, these files will be treated as non-stylesheet one by webpacker.

More flexible solution is adding stylesheet_extensions field to webpacker.yml and using it in file type detection.

I think the later is preferable one but stylesheet extensions occur twice in a file. It's a bit redundant.
Do you have any ideas about how to solve this problem?