feat(runtime): add nullability annotations to NativeScript.h

[adrian-niculescu]

The embedder header has no nullability annotations, so a Swift embedder sees every pointer in Config and NativeScript as implicitly unwrapped. The implementation already has a clear contract: BaseDir, the script string and the Config argument are required (their UTF8String goes straight into a std::string), ApplicationPath and MetadataPtr fall back to BaseDir/app and the __TNSMetadata section when nil, Arguments is only read when IsDebug is set, and initWithConfig: never returns nil.

This wraps the header in NS_ASSUME_NONNULL and marks the three optional properties nullable, so Swift imports them as String? / UnsafeMutableRawPointer? / an optional argv and the rest as non-optional. No change for Objective-C callers; the in-repo consumers (TestRunner, AppWithModules, the project templates) already set the required fields.

Checked with clang -fsyntax-only -Wnullability-completeness -Werror in both Objective-C and Objective-C++ and with a Swift type-check of the imported API.

Summary by CodeRabbit

• Bug Fixes
  • Clarified nullability for application configuration properties.
  • Improved compatibility for configurations where application paths, metadata, or arguments may be absent.

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Reviewing files that changed from the base of the PR and between d02c8e4 and ae42f48.

📒 Files selected for processing (1)

• NativeScript/inspector/JsV8InspectorClient.mm

📝 Walkthrough

Walkthrough

The Config interface now uses explicit nullability annotations. ApplicationPath, MetadataPtr, and Arguments are nullable. The header wraps these declarations in an NS_ASSUME_NONNULL region.

Changes

Config nullability

Layer / File(s)	Summary
Update Config nullability contract NativeScript/NativeScript.h	The header adds an assumed nonnull region and marks ApplicationPath, MetadataPtr, and Arguments as nullable. The region closes at the end of the header.

Estimated code review effort: 1 (Trivial) | ~3 minutes

Merge Risk: 🔵 Low · up to d02c8

The API now allows a missing argument array, but a positive argument count can still cause debug startup to dereference it and crash the host process. The change is mergeable with explicit owner awareness and follow-up to enforce the Arguments/ArgumentsCount contract.

Poem

A rabbit checks the header with care
Nullable fields now declare what they bear
The nullability bounds open and close
Each Config property states what it knows
Small markings keep contracts clear
Hoppy review brings a cheer

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly and concisely describes the main change: adding nullability annotations to NativeScript.h.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check. Docstring coverage is scoped to functions touched by this diff. Analyzed 0 functions across 1…
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

Full details: Docstring Coverage

Explanation

No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check. Docstring coverage is scoped to functions touched by this diff. Analyzed 0 functions across 1 files.

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Actionable comments posted: 1

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Inline comments:
In `@NativeScript/NativeScript.h`:
- Line 13: Update the Arguments property declaration to use a nonnull element
pointer with a nullable outer array, then adjust
JsV8InspectorClient::enableInspector to safely handle a nil Arguments array when
ArgumentsCount indicates entries before passing elements to strcmp.

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Fix all unresolved CodeRabbit comments on this PR:

• Push a commit to this branch (recommended)
• Create a new PR with the fixes

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Configuration used: Repository UI

Review profile: CHILL

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📥 Commits

Reviewing files that changed from the base of the PR and between 686157b and d02c8e4.

📒 Files selected for processing (1)

• NativeScript/NativeScript.h

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