import { ItemCollection, Registry, RegistryInputItem, RegistryItem } from './Registry';
export { ItemCollection as ConfigCollection } from './Registry';
export interface ConfigResisteryItem extends RegistryItem {
    mutated: boolean;
}
/**
 * 🎛 ConfigRegistry
 */
export declare class ConfigRegistry extends Registry<ConfigResisteryItem> {
    /**
     * The set() method adds or updates an element with a specified
     * key and item to the registry.
     * @param key
     * @param value
     */
    set(key: string, item: ConfigResisteryItem | RegistryInputItem): this;
    /**
     * Registers a value if it's not already registered.
     * @param item
     */
    registerIfNotExists(item: ConfigResisteryItem | ConfigResisteryItem['value'] | RegistryInputItem | RegistryInputItem['value']): Promise<void | string>;
    registerIfNotExists(key: string, item: ConfigResisteryItem | ConfigResisteryItem['value'] | RegistryInputItem | RegistryInputItem['value']): Promise<void | string>;
    /**
     * Registers all collection items that aren't already registered.
     * @param collection
     */
    registerCollectionIfNotExists(collection?: ItemCollection<RegistryInputItem>): Promise<string[]>;
}