Resolve modules servlet returns empty list of modules when missing one is required

• Type: Bug
• Status: Closed
• Resolution: Fixed
• Affects Version/s: Master
• Fix Version/s: Master
• Component/s: AMD Module Loader
• Labels: None
• Fix Priority: 3
• Epic Link: fi-bundle-toolkit-7.2-release
• Sprint: S02E11 - The Big Lebowski, S02E12 - Donnie Darko
• Git Pull Request: https://github.com/brianchandotcom/liferay-portal/pull/70771

If a request is made in the browser for a missing JS module like:

     Liferay.Loader.require(["a-missing-module@1.0.0")

the server replies with an empty resolvedModules array which finally makes the loader fail.

The server should return a resolution error in this case.

 

Steps to reproduce:

• Start portal
• Deploy attached JAR
• Add a "My project" portlet to the page

Expected results:

• An error should be shown in the browser console stating that some modules (named "perico" and "juanillo") could not be loaded:

Actual results:

• A cryptic error is shown in the browser console with no information about the missing modules