Issue Description

I've identified a regression in the NativeClass transformer starting from version 5.0.25. In previous versions (v5.0.24 and earlier), the transformer appeared to use a broader search (likely fullText.indexOf('@NativeClass')), which successfully captured classes defined within function scopes.

In the latest versions, the transformer seems to only scan top-level class declarations. Classes nested inside functions (local classes/closure classes) are ignored by the transformer, causing TypeScript to emit standard __decorate helpers. Since the NativeScript runtime does not define __decorate and requires specific class rewriting for native injection, this leads to a runtime error.

Reproduction

unzip ts-test.zip

npm i
npx webpack

Expected Behavior:
The nested class should be transformed/rewritten into the compatible ES5-like structure regardless of its nesting level.

Actual Behavior:
The transformer skips the class, and __decorate is emitted in dist/bundle.js

Relevant log output (if applicable)

Environment

No response

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• This is a bug report
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