import { type ColorSchemeName } from 'react-native';
export type SystemColorScheme = 'light' | 'dark' | undefined;
/** A concrete, resolved color scheme (never undefined). */
export type ColorScheme = 'light' | 'dark';
/**
 * Resolve the active color scheme with this precedence (pure, exported for
 * testing):
 *   1. `controlled` — the `FunkitProvider` `colorScheme` prop. When set, it
 *      wins over everything, so a manual toggle / system change can't move it.
 *   2. `override` — a manual `toggleColorScheme()` choice (uncontrolled only).
 *   3. `system` — the live OS Appearance.
 *   4. `'light'` — fallback when the system scheme is unknown.
 */
export declare function resolveColorScheme(controlled: ColorScheme | undefined, override: ColorScheme | undefined, system: SystemColorScheme): ColorScheme;
/**
 * Normalize React Native's `ColorSchemeName` (`'light' | 'dark' | null |
 * undefined`) to `'light' | 'dark' | undefined`. Pure — exported for testing.
 */
export declare function normalizeColorScheme(scheme: ColorSchemeName | null | undefined): SystemColorScheme;
/**
 * Reads the system color scheme from RN's `Appearance` API and re-renders on
 * change. The RN counterpart to web's `prefers-color-scheme` media query.
 */
export declare function useColorScheme(): SystemColorScheme;
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