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What is Hermes in React Native?

Hermes is an open-source JavaScript engine optimized specifically for React Native applications. Developed by Meta, Hermes improves app startup time, reduces memory usage, and decreases application size. Unlike traditional JavaScript engines, Hermes precompiles JavaScript into bytecode during the build process, allowing apps to start faster. It is particularly beneficial for Android applications and is now enabled by default in many React Native projects. Hermes also provides better debugging support and performance profiling tools.

Related Drills

What is React Native and how is it different from React?

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What are the core components in React Native?

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What is the View component in React Native?

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JB

Jeevan Bhargav

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This answer is calibrated for technical interviews. Verify benchmarks in local sandboxes before deploying.