import type { UmbLocalizationEntry } from './types/localization.js';
export type FunctionParams<T> = T extends (...args: infer U) => string ? U : [];
export interface UmbLocalizationSetBase {
    $code: string;
    $dir: 'ltr' | 'rtl';
}
export type UmbLocalizationSetKey = string | number | symbol;
export interface UmbLocalizationSet extends UmbLocalizationSetBase {
    [key: UmbLocalizationSetKey]: UmbLocalizationEntry;
}
/**
 * The non-generic contract the manager calls on each registered controller. Decoupled from
 * `UmbLocalizationController<T>`'s generic so the manager's `Set` and consumer-registration
 * methods don't pick up variance from `term()`'s conditional types — and so the manager can't
 * accidentally start depending on the generic in future without amending the contract here.
 */
export interface UmbLocalizationConsumer {
    keysChanged(changedKeys: Set<UmbLocalizationSetKey>): void;
    documentUpdate(): void;
}
export declare const UMB_DEFAULT_LOCALIZATION_CULTURE = "en";
export declare class UmbLocalizationManager {
    #private;
    /**
     * Internal registry of controllers the manager dispatches `keysChanged` / `documentUpdate` to.
     * Use `appendConsumer` / `removeConsumer` to mutate this set — external code should not iterate
     * it directly or assume the stored values are full `UmbLocalizationController` instances. The
     * element type was relaxed from `UmbLocalizationController<UmbLocalizationSetBase>` to the
     * smaller `UmbLocalizationConsumer` contract in v18.1 so that the manager doesn't pick up
     * variance from the controller's generic `term()` signature.
     */
    connectedControllers: Set<UmbLocalizationConsumer>;
    localizations: Map<string, UmbLocalizationSetBase>;
    /**
     * The currently active language and direction. Read-only from a consumer perspective —
     * to change the active language, call `umbLocalizationRegistry.loadLanguage(locale)`.
     * The fields stay publicly writable for the registry's pipeline; consumers writing here
     * directly will only sync the field without loading the matching dictionaries.
     */
    documentDirection: 'ltr' | 'rtl';
    documentLanguage: string;
    get fallback(): UmbLocalizationSet | undefined;
    appendConsumer(consumer: UmbLocalizationConsumer): void;
    removeConsumer(consumer: UmbLocalizationConsumer): void;
    /**
     * Registers one or more translations
     * @param {UmbLocalizationSetBase} t - the localization set to register.
     */
    registerLocalization(t: UmbLocalizationSetBase): void;
    registerManyLocalizations(translations: Array<UmbLocalizationSetBase>): void;
}
export declare const umbLocalizationManager: UmbLocalizationManager;