Native Activity Indicator
How Boost prepares the native ActivityIndicator tree and when it keeps the wrapper.
React Native's ActivityIndicator component renders an outer native View and a platform spinner. Boost creates those same two native elements at build time, removing a fiber from the tree.
It also applies the platform defaults for color, size, visibility, and layout. Dynamic direct values use small runtime helpers when needed.
When it runs
The optimizer can usually replace an ActivityIndicator when:
- It is imported from
react-native. - The build targets iOS or Android.
- Its props are written directly on the element.
- It has no children.
- Moving its props to the two generated native elements keeps their evaluation order safe.
When it skips
Boost keeps the wrapper when it finds:
- An unknown or unsupported target platform.
- Spread props.
- Children.
- A prop expression with side effects, such as a function call.
- A Unistyles style, or a style that might come from Unistyles.
These checks prevent Boost from changing prop precedence, execution order, or style reactivity.
Configuration
The optimizer is enabled by default. Set native-activity-indicator to off to disable it.