React

Follow stronger established project patterns.

• Order component bodies as hooks grouped by concern, derived values, handlers, final conditional renders, then JSX.
• Use a query library for server data; never fetch directly inside components.
• Treat the query cache as the source of truth; do not mirror it in local state.
• Select only the required store state, using shallow equality where appropriate.
• Access global stores through hooks rather than passing their state through props.
• Minimize props and prefer whole domain objects over collections of primitive fields.
• Use lazy loading only for deliberate code splitting or a concrete runtime boundary.

React Native

• Assume React Native projects target native platforms only; support web only when the project explicitly declares it as a target.
• Keep mobile JavaScript compatible with the project's Hermes runtime.