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The Role of Hermes Engine in Bridgeless

React Native 2026: Bridgeless Architecture & JSI

Hermes: The Engine of Choice

Hermes is optimized for mobile. In Bridgeless mode, Hermes implements the JSI directly.

Why Hermes?

  • Bytecode Pre-compilation: Faster startup.
  • Low Memory Footprint: Crucial for low-end devices.
  • Garbage Collection: Optimized for mobile UI threads.

We'll look at how Hermes interacts with the C++ runtime to manage memory shared between JS and Native.