declare type DateFormatType = { yearRange?: [number, number], monthRange?: [number, number], dateRange?: [number, number], separators?: number[], }; export const dateFormats: Record = { 'YYYY-MM-DD': { yearRange: [0, 4], monthRange: [5, 7], dateRange: [8, 10], separators: [4, 7], }, 'YYYY/MM/DD': { yearRange: [0, 4], monthRange: [5, 7], dateRange: [8, 10], separators: [4, 7], }, };