import { ContextService } from '../../context';
import { DeriveContextServiceContract } from '../../../models/context/update-context-method';
import { ValueChangeCallback } from '../../../models/context/value-change-callback';
import { LifecycleHooks } from '../../../providers/service/lifecycle-hooks';
import { NamespaceMap } from '../../../models/namespace';
type NamespacesContextFields = {
    readonly NAMESPACES: string;
};
type NamespacesContextFieldParams = {
    readonly NAMESPACES: NamespaceMap;
};
/**
 * Service for managing namespaces context in the application.
 */
export declare class NamespacesContextService extends ContextService<NamespacesContextFields> implements DeriveContextServiceContract<NamespacesContextFields, NamespacesContextFieldParams>, LifecycleHooks {
    readonly NAMESPACES = "namespaces";
    /**
     * Updates the namespaces in the context.
     *
     * @param namespaces - The new namespace map to be stored in the context
     */
    updateNamespaces(namespaces: NamespaceMap): void;
    /**
     * Subscribes to changes in the namespaces context.
     *
     * @param callbackFn - The callback function that will be invoked when namespaces change
     * @returns A function that can be called to unsubscribe from the changes
     */
    onNamespacesChanged(callbackFn: ValueChangeCallback<NamespaceMap | undefined>): () => void;
}
export {};