What does a StyleSheet.create do?

In React native, the StyleSheet.create() ensures that the values are immutable and opaque. They are used to send the style only once through the bridge to avoid passing a new style object.

In React Native, the StyleSheet.create function is used to create a reusable and optimized stylesheet object. When you define styles for your components using StyleSheet.create, it helps improve the performance of your React Native application by precomputing the styles and ensuring that they are only calculated once.

Here’s a breakdown of what StyleSheet.create does:

1. Optimization: It optimizes the styles by caching them. When you create a stylesheet using StyleSheet.create, the styles are processed and assigned unique identifiers. These identifiers are then used internally to efficiently reference styles, reducing the performance overhead associated with recalculating styles on each render.
2. Reusability: The styles created with StyleSheet.create can be reused across multiple components. This promotes a consistent and maintainable style structure in your application.
3. Type checking: When using TypeScript or Flow with React Native, StyleSheet.create provides type checking for your styles. This helps catch potential errors in your styles at compile-time rather than runtime.

Example usage:

By using StyleSheet.create, you benefit from the aforementioned optimizations and maintain a cleaner and more efficient codebase for styling in your React Native application.