couldn't find file ... with type 'application/javascript' when using *.js.jst.ejs.slim

[stiller-leser]

Expected behavior

It should find and load the file (works fine in Sprockets 3)

Actual behavior

Instead it throws Sprockets::FileNotFound: couldn't find file... with type 'application/javascript'

System configuration

• Sprockets version: 4.0.0.beta5
• Ruby version: 2.3.0

Additional Information

If I do a Rails.application.assets.find_asset!('*.js.jst.ejs.slim') it returns:

#<Sprockets::Asset:3fe5365d1f28 "file:///path/to/file/file_name.js.jst.ejs.slim?type=text/slim&id=ecf6b827b96529b096b11377d14aa880b60a9fca5a49b0ea04d42b4b4933011d">

If I curl the file I can still see slim-syntax in there, so either the slim gem does not pick the files up, or if the syntax is supposed to be in there, the 'application/javascript' returned by sprockets is wrong.

How sprockets 3 behaves

If I curl the files using sprockets 3.7.1 the slim syntax is still present, but the file is correctly identified as 'application/javascript' and not 'text/slim'. Hence, this issue is related to #475 and could be fixed by adding to PR #491 .

[stiller-leser]

This issue can be closed. It turned out to be a issue with the gem, rather than with sprockets.