feat: expose MissingFundsErr

[ascandone]

No description provided.

[coderabbitai]

Walkthrough

The changes add an Is() method to the MissingFundsErr error type to enable compatibility with errors.Is(), and expose MissingFundsErr as a public API type through package-level aliases for external consumption.

Changes

Cohort / File(s)	Summary
Error Handler Implementation internal/interpreter/interpreter_error.go	Added Is(target error) bool method to MissingFundsErr type to support errors.Is() error type assertion.
Public API Export numscript.go	Exposed MissingFundsErr as a public type alias in multiple type blocks for external package access.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~10 minutes

Poem

🐰 A hop, a bound, a method new,
Our funds declared for all to view,
With Is() checks so clean and bright,
The errors flow just right,
No missing coin shall hide from sight! 💰

🚥 Pre-merge checks | ✅ 2 | ❌ 1

❌ Failed checks (1 inconclusive)

Check name	Status	Explanation	Resolution
Description check	❓ Inconclusive	No description was provided by the author, making it impossible to assess relevance to the changeset.	Add a pull request description explaining the rationale for exposing MissingFundsErr and how it benefits users of the package.

✅ Passed checks (2 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly describes the main change: exposing MissingFundsErr as a public API through type aliases and implementing the Is() method for error compatibility.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

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✨ Finishing touches

• 📝 Generate docstrings

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch feat/expose-errors

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[codecov]

Codecov Report

❌ Patch coverage is 0% with 3 lines in your changes missing coverage. Please review.
✅ Project coverage is 67.75%. Comparing base (9caec53) to head (95d6ef6).
⚠️ Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
internal/interpreter/interpreter_error.go	0.00%	3 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #107      +/-   ##
==========================================
- Coverage   67.84%   67.75%   -0.10%     
==========================================
  Files          45       45              
  Lines        4422     4425       +3     
==========================================
- Hits         3000     2998       -2     
- Misses       1260     1264       +4     
- Partials      162      163       +1     

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