declare const parseIssue: (str: string) => { year: string; month: string; day: string; volume: undefined; issue: undefined; pages: undefined; articleId: string; } | { year: string; month: string | undefined; day: string | undefined; volume: string | undefined; issue: string | undefined; pages: string | [start: number, end: number] | undefined; articleId: undefined; }; export default parseIssue;