Proof

react-native-config-reader

native-seam only: the package's two-line JS runs unchanged and finds an RNConfigReader module on both platforms, including the iOS BuildConfigs sub-object it dereferences at import
40%
API coverage
No visual proof cases have been published for this package yet. The registry summary below describes what the compat layer implements.
Working
module presence on both platforms so the import never throws, the iOS BuildConfigs branch, and the DEBUG/BUILD_TYPE fields every Android BuildConfig carries — answered truthfully for a preview build
Missing (3)
the app's own generated BuildConfig fields: upstream reflects whatever gradle declaredwhich the browser cannot knowso any app-private flag reads back undefined exactly as it would in a build that never declared it