enhance: null値のアサーション関数を追加

[kakkokari-gtyih]

What

• VNull のアサーション関数を追加
• 判定基準を既存のアサーション関数に寄せた

Why

misskey-dev/misskey#16838 の記述簡略化のため

Additional info (optional)

[codecov-commenter]

⚠️ Please install the to ensure uploads and comments are reliably processed by Codecov.

Codecov Report

❌ Patch coverage is 76.47059% with 8 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
src/interpreter/util.ts	76.47%	8 Missing ⚠️
❗ Your organization needs to install the Codecov GitHub app to enable full functionality.

Files with missing lines	Coverage Δ
src/interpreter/util.ts	69.44% <76.47%> (+1.46%)	⬆️

... and 29 files with indirect coverage changes

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
• 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.

[kakkokari-gtyih]

api extractor回すの忘れてた

[takejohn]

api extractorをミスってコミットが荒れてしまった、申し訳ない

[syuilo]

🙏