import { type ThemeVariables } from "./theme-types.js";
export interface ThemeProviderAdapter {
    readonly id: string;
    canRead(target: HTMLElement): boolean;
    read(target: HTMLElement): ThemeVariables;
}
/**
 * The page's provider registry, shared by every copy of this package.
 *
 * Remotes and hosts bundle their own copies, while `<pie-theme>` is defined once
 * per page, by whichever copy loads first. A registry private to each copy left
 * a later copy's providers invisible to that element. The shape is a contract
 * between copies of any version, so it only grows.
 */
interface PieThemeProviderState {
    readonly adapters: Map<string, ThemeProviderAdapter>;
    readonly observers: Set<() => void>;
}
declare global {
    var PIE_THEME_PROVIDERS: PieThemeProviderState | undefined;
}
/**
 * Provider mode that resolves nothing, leaving this package's shipped defaults
 * in place.
 *
 * `"auto"` lets any registered adapter that can read the target win, which on a
 * DaisyUI page means PIE tokens follow `--color-*`. This is how a host asks for
 * the palette it would have had before adopting a provider — the first question
 * to answer when colours differ between two environments.
 *
 * Distinct from naming an unregistered provider, which lands in the same place
 * by accident. `unregisterPieThemeProvider` cannot remove this one because it is
 * not in the registry at all, so the mode cannot be taken away from a host.
 */
export declare const PIE_THEME_PROVIDER_NONE = "none";
export declare const DAISYUI_THEME_PROVIDER_ADAPTER: ThemeProviderAdapter;
export declare function registerPieThemeProvider(adapter: ThemeProviderAdapter): void;
export declare function unregisterPieThemeProvider(providerId: string): void;
/** Package-internal invalidation used by connected pie-theme elements. */
export declare function observePieThemeProviders(listener: () => void): () => void;
export declare function listPieThemeProviders(): ThemeProviderAdapter[];
export declare function getPieThemeProvider(providerId: string): ThemeProviderAdapter | undefined;
export declare function resolveProviderVariables(args: {
    target: HTMLElement;
    provider?: string | null;
}): ThemeVariables;
export {};