test(next-env.d-empty-fallback): verify Edge Cases & Empty/Missing Inputs Verification (Variation 1)

[ARPANPATRA111]

Description

Fixes #4295

Adds empty-fallback test coverage for next-env.d.ts — the Next.js type declaration file.

Tests added (5)

1. No null bytes or binary corruption — verifies the file contains valid UTF-8
2. Valid file path resolution — ensures path resolves correctly to project root
3. Missing file graceful handling — removes file temporarily, verifies read returns null
4. Minimal viable content — truncates to /// <reference types=\next\ /> and verifies structure
5. Full content restoration — restores complete content after minimal state test

Pillar

• 🎨 Pillar 1 — New Theme Design
• 📐 Pillar 2 — Geometric SVG Improvement
• 🕐 Pillar 3 — Timezone Logic Optimization
• 🛠️ Other (Bug fix, refactoring, docs)

Checklist before requesting a review:

• I have read the CONTRIBUTING.md file.
• I have tested these changes locally.
• I have run npm run format and npm run lint locally and resolved all errors (CI will fail otherwise).
• My commits follow the Conventional Commits format.
• I have started the repo.
• I have made sure that i have only one commit to merge in this PR.

[github-actions]

📦 Next.js Bundle Size Report (Gzipped Sizes)

✨ No significant bundle size changes detected.

📊 Summary of Totals

Category	PR Size	Base Size	Difference
Total JS	3628.47 KB	3628.47 KB	0 B
Total CSS	284.92 KB	284.92 KB	0 B

[ARPANPATRA111]

@Aamod007 @souravjhahind @JhaSourav07 review and merge

[Aamod007]

Difficulty: beginner – New next-env.d.empty-fallback.test.ts testing edge cases for empty/missing inputs.

Quality: clean – Edge case testing.

Type: testing – Fallback coverage.

Good edge case tests!

[github-actions]

🎉 Congratulations @ARPANPATRA111! Your PR has been successfully merged. 🚀

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