Fix lua build

[xynicole]

Proposed changes

Fixed Lua build, updated buildBlock logic, and refined unit tests. Previously, we missed cases involving other directives. Our unit tests only checked the Lua directive; now, I’ve added tests for additional directives alongside the Lua directives.

Checklist

Before creating a PR, run through this checklist and mark each as complete.

• [x] I have read the CONTRIBUTING document
• [x] If applicable, I have added tests that prove my fix is effective or that my feature works
• [x] If applicable, I have checked that any relevant tests pass after adding my changes
• [ ] I have updated any relevant documentation (README.md)