Summary

Occasional crashes occur during the initial loading phase of Music Blocks due to a missing dependency load order. Specifically, the global translation function _ is being used in activity/logoconstants.js before it is defined by utils/utils.

This results in the following runtime error:
Uncaught ReferenceError: _ is not defined
at logoconstants.js?v=999999_fix7:43:22
ScreenShot:

Steps to Reproduce:
1. Open the Music Blocks activity in a browser.
2. On slower networks or certain browser environments, the application fails during startup.
3. Open the browser Developer Console.

Observe the error:

Uncaught ReferenceError: _ is not defined

Actual Behavior

The application crashes during initialization because:

_("Not a valid pitch name")
is executed before the _ translation function has been globally defined.

The function is provided by utils/utils, but activity/logoconstants does not explicitly declare it as a dependency. As a result, in some loading sequences, logoconstants.js executes before utils/utils has finished loading.

Expected Behavior:

• All required dependencies should be loaded in the correct order, ensuring that:
  
• The _ translation function is globally available
  
• No startup crashes occur due to undefined references
  
• The application loads reliably across different network speeds and browser environments
  

Suggested Fix:

Add a shim configuration for activity/logoconstants in js/loader.js to explicitly load utils/utils first:

// In js/loader.js shim configuration
"activity/logoconstants": {
deps: ["utils/utils"]
},


This ensures that:

• utils/utils is loaded before logoconstants.js
  
• The _ function is available globally
  
• Startup behavior becomes deterministic and stable
  

Why This Fix Is Appropriate

• Minimal and safe change
  
• Maintains current architecture
  
• Prevents intermittent crashes
  
• Improves reliability across different environments
  
• Does not alter runtime logic
  

Impact

This fix improves:

• Application stability
  
• First-load reliability
  
• Developer debugging experience
  
• User experience during startup
  

I would be happy to work on this issue and submit a PR if the maintainers agree with the proposed solution.