/**
 * The file provider will fetch the files with the definitions.
 * The provider is passed as input parameter when creating a calculator instance
 */
export interface IFileProvider {
    /**
     * This method should load the json file with the holiday definition for a hierarchy
     *
     * @param rootHierarchy the name of the root hierarchy. Mostly, but not limitied to ISO country codes
     * @example 'de', 'en'
     */
    loadConfiguration(rootHierarchy: string): Promise<string>;
    /**
     * Loads the json file with the hiararchy tree
     */
    loadHierarchies(): Promise<string>;
    /**
     * Load the json with translations for the hierarchy tree
     *
     * @param language Optional: the language. It is up to the one implementing the interface how the undefined value will be handled.
     */
    loadHierarchyTranslations(language?: string): Promise<string>;
    /**
     * Load the json with the translations for the holidays
     * @param language Optional: the language. It is up to the one implementing the interface how the undefined value will be handled.
     */
    loadHolidayTranslations(language?: string): Promise<string>;
    /**
     * Loads the supported languages
     */
    loadLanguages(): Promise<string>;
}
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