[ Proof ]
@callstack/react-native-sandbox
published SandboxReactNativeView.js runs unchanged against a SandboxReactNativeView seam that mirrors the no-bundle host protocol: sized container, silent postMessage, never emits50%
API coverageWorking
view mount with componentName and moduleName paths; host postMessage silent with no listener; zero onMessage on both platforms
Missing (4)
nested runtime behaviors: bundle loadload-error emissionTurboModule gatingin-sandbox messaging and cross-origin routing