NativeScript for Mobile App Development Performance and Debugging

Question 1

Which NativeScript CLI flag enables verbose logging for build diagnostics?

Accepted Answer

--log verbose

Answer

--debug

Answer

--verbose

Answer

--trace

Question 2

Which tool allows Chrome DevTools to debug a NativeScript application?

Accepted Answer

ns debug android (or ios) opens Chrome DevTools inspector

Answer

Xcode Instruments only

Answer

Android Studio profiler only

Answer

The NativeScript Playground debugger

Question 3

What is the main performance advantage of NativeScript over hybrid frameworks like Cordova?

Accepted Answer

Direct native API calls without a JavaScript-to-native bridge overhead

Answer

Smaller app bundle size

Answer

Fewer permissions required

Answer

Faster JavaScript execution engine

Question 4

Which technique reduces NativeScript app startup time by pre-initializing the JS runtime?

Accepted Answer

Snapshot (Webpack snapshot plugin)

Answer

Tree shaking

Answer

Code splitting

Answer

Lazy loading

Question 5

How do you enable console.log output from a NativeScript device in the terminal?

Accepted Answer

Run the app with ns run --log and view output in the same terminal

Answer

Use adb logcat and filter for NativeScript

Answer

Only available through Chrome DevTools

Answer

Pipe to a log file with --output

Question 6

What NativeScript build option minifies and obfuscates JavaScript for production?

Accepted Answer

ns build android --release

Answer

ns build android --production

Answer

ns build android --minify

Answer

ns build android --optimize