/** @alpha */
export interface TranslationRef<TId extends string = string, TMessages extends {
    [key in string]: string;
} = {
    [key in string]: string;
}> {
    $$type: '@backstage/TranslationRef';
    id: TId;
    T: TMessages;
}
/** @ignore */
type AnyNestedMessages = {
    [key in string]: AnyNestedMessages | string;
};
/**
 * Flattens a nested message declaration into a flat object with dot-separated keys.
 *
 * @ignore
 */
type FlattenedMessages<TMessages extends AnyNestedMessages> = {
    [TKey in keyof TMessages]: (_: TMessages[TKey] extends infer TValue ? TValue extends AnyNestedMessages ? FlattenedMessages<TValue> extends infer TNested ? {
        [TNestedKey in keyof TNested as `${TKey & string}.${TNestedKey & string}`]: TNested[TNestedKey];
    } : never : {
        [_ in TKey]: TValue;
    } : never) => void;
}[keyof TMessages] extends (_: infer TIntersection) => void ? {
    readonly [TExpandKey in keyof TIntersection]: TIntersection[TExpandKey];
} : never;
/** @alpha */
export interface TranslationRefOptions<TId extends string, TNestedMessages extends AnyNestedMessages, TTranslations extends {
    [language in string]: () => Promise<{
        default: {
            [key in keyof FlattenedMessages<TNestedMessages>]: string | null;
        };
    }>;
}> {
    id: TId;
    messages: TNestedMessages;
    translations?: TTranslations;
}
/** @alpha */
export declare function createTranslationRef<TId extends string, const TNestedMessages extends AnyNestedMessages, TTranslations extends {
    [language in string]: () => Promise<{
        default: {
            [key in keyof FlattenedMessages<TNestedMessages>]: string | null;
        };
    }>;
}>(config: TranslationRefOptions<TId, TNestedMessages, TTranslations>): TranslationRef<TId, FlattenedMessages<TNestedMessages>>;
export {};