import { type ColorSchemeSnapshot, type PieThemeObserver, type RegisteredPieColorScheme, type RegistrationReceipt, type ResolvePieThemeInput, type ThemeResolution, type Unsubscribe } from "./theme-types.js";
/** Returns the current deeply immutable catalog snapshot. */
export declare function listPieColorSchemes(): ColorSchemeSnapshot;
/** Delivers the current snapshot immediately, then once per registry mutation. */
export declare function observePieColorSchemes(listener: PieThemeObserver): Unsubscribe;
/** Resolves Base Theme → Theme Provider → Scheme → Explicit Theme Override. */
export declare function resolvePieTheme(input?: ResolvePieThemeInput): ThemeResolution;
/**
 * Registers valid entries from a batch and returns a generation-aware receipt.
 * Invalid entries never disturb an existing valid registration.
 */
export declare function registerPieColorSchemes(entries: readonly RegisteredPieColorScheme[]): RegistrationReceipt;