import { ObjectID } from 'bson';
import { LanguageKeys } from '../schemas/localized-text';
import { ITag, ITagSingleLang } from '../schemas/tag-as-model';
export declare function toSingleLangTag(tag: Pick<ITag, 'names'>, lang: LanguageKeys): ITagSingleLang;
export declare function toSingleLangTagsFrom(tags: ObjectID[] | ITag[], lang: LanguageKeys): ObjectID[] | ITag[];
export declare function areTagIds(tags: ObjectID[] | ITag[]): tags is ObjectID[];
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