export declare type Value = object | string | number;
export declare type ValueCallback = () => Value;
export declare type Values = {
    [key: string]: Value | ValueCallback;
};
export declare type ValuesCallback = () => Values;
export declare type Key = string;
export declare type LanguageIdentifier = string;
export declare type Translation = string;
export declare type Strings = {
    [key: string]: string | Strings;
};
export declare type TranslationCache = {
    [key: string]: Translation;
};
export declare type StringsLoader = (lang: LanguageIdentifier, config: ITranslateConfig) => Promise<Strings>;
export declare type InterpolateFunction = (text: string, values: Values | ValuesCallback | null, config: ITranslateConfig) => Translation;
export declare type EmptyFunction = (key: Key, config: ITranslateConfig) => string;
export declare type LookupFunction = (key: Key, config: ITranslateConfig) => string | null;
export declare const enum TranslateEventKind {
    LANG_CHANGED = "langChanged"
}
export declare type LangChangedEvent = {
    previousLang?: LanguageIdentifier;
    previousStrings?: Strings;
    strings: Strings;
    lang: LanguageIdentifier;
};
export interface ITranslateConfig {
    loader: StringsLoader;
    interpolate: InterpolateFunction;
    empty: EmptyFunction;
    lookup: LookupFunction;
    lang?: LanguageIdentifier;
    strings?: Strings;
    translationCache: TranslationCache;
}
export declare const CLEANUP_PARTS_MS: number;
export declare type LangChangedDirectiveCallback = ((e?: LangChangedEvent) => any);