feat: add parse and format functions for all date formats

BREAKING CHANGE: remove MINIMAL_VALID_DATE and ISO_GERMAN_DATE_FORMAT

src/date.ts

@@ -1,69 +1,72 @@
 import { differenceInCalendarDays, format, isValid, parse } from 'date-fns';
 import de from 'date-fns/locale/de';
 
-export const GERMAN_DOTLESS_DATE_FORMAT: string = 'ddMMy';
-export const GERMAN_DATE_FORMAT: string = 'dd.MM.y';
-/**
- * Reverse order of standard german format to sort correctly.
- */
-export const ISO_GERMAN_DATE_FORMAT: string = 'y.MM.dd';
-export const GERMAN_DATE_TIME_FORMAT: string = 'dd.MM.y HH:mm';
-export const ISO_DATE_FORMAT: string = 'y-MM-dd';
-export const ISO_DATE_TIME_FORMAT: string = 'y-MM-dd HH:mm:ss';
-export const SECONDLESS_DATE_TIME_FORMAT: string = 'y-MM-dd HH:mm';
-
-export const MINIMAL_VALID_DATE = new Date(1900, 0, 1);
+export function isToday(date: Date | number) {
+  return differenceInCalendarDays(new Date(), date) === 0;
+}
 
 export function parseDate(value: string, formatString: string): Date | null {
   const parsedDate = parse(value, formatString, new Date());
 
   return isValid(parsedDate) ? parsedDate : null;
 }
 
+export function parseGermanDateFlexible(value: string): Date | null {
+  return parseGermanDotlessDate(value) || parseGermanDate(value);
+}
+
+export const GERMAN_DATE_FORMAT: string = 'dd.MM.y';
 export function parseGermanDate(value: string): Date | null {
   return parseDate(value, GERMAN_DATE_FORMAT);
 }
+export function formatGerman(date: Date): string {
+  return format(date, GERMAN_DATE_FORMAT, { locale: de });
+}
 
+export const ISO_DATE_FORMAT: string = 'y-MM-dd';
 export function parseIsoDate(value: string): Date | null {
   return parseDate(value, ISO_DATE_FORMAT);
 }
-
-export function parseSecondlessDateTime(value: string): Date | null {
-  return parseDate(value, SECONDLESS_DATE_TIME_FORMAT);
+export function formatIsoDate(date: number | Date): string {
+  return format(date, ISO_DATE_FORMAT, { locale: de });
 }
 
+export const GERMAN_DOTLESS_DATE_FORMAT: string = 'ddMMy';
 export function parseGermanDotlessDate(value: string): Date | null {
   return parseDate(value, GERMAN_DOTLESS_DATE_FORMAT);
 }
-
-export function parseGermanDateFlexible(value: string): Date | null {
-  return parseGermanDotlessDate(value) || parseGermanDate(value);
+export function formatGermanDotlessDate(date: Date): string {
+  return format(date, GERMAN_DOTLESS_DATE_FORMAT, { locale: de });
 }
 
-export function formatGerman(date: Date): string {
-  return format(date, GERMAN_DATE_FORMAT, { locale: de });
+export const SECONDLESS_DATE_TIME_FORMAT: string = 'y-MM-dd HH:mm';
+export function parseSecondlessDateTime(value: string): Date | null {
+  return parseDate(value, SECONDLESS_DATE_TIME_FORMAT);
 }
-
-export function formatIsoGerman(date: Date): string {
-  return format(date, ISO_GERMAN_DATE_FORMAT, { locale: de });
+export function formatSecondlessDateTime(dateTime: number | Date): string {
+  return format(dateTime, SECONDLESS_DATE_TIME_FORMAT, { locale: de });
 }
 
+export const GERMAN_DATE_TIME_FORMAT: string = 'dd.MM.y HH:mm';
+export function parseGermanDateTime(value: string): Date | null {
+  return parseDate(value, GERMAN_DATE_TIME_FORMAT);
+}
 export function formatGermanDateTime(date: Date): string {
   return format(date, GERMAN_DATE_TIME_FORMAT, { locale: de });
 }
 
-export function formatIsoDate(date: number | Date): string {
-  return format(date, ISO_DATE_FORMAT, { locale: de });
-}
-
-export function formatSecondlessDateTime(dateTime: number | Date): string {
-  return format(dateTime, SECONDLESS_DATE_TIME_FORMAT, { locale: de });
+export const ISO_DATE_TIME_FORMAT: string = 'y-MM-dd HH:mm:ss';
+export function parseIsoDateTime(value: string): Date | null {
+  return parseDate(value, ISO_DATE_TIME_FORMAT);
 }
-
 export function formatIsoDateTime(dateTime: number | Date): string {
   return format(dateTime, ISO_DATE_TIME_FORMAT, { locale: de });
 }
 
-export function isToday(date: Date | number) {
-  return differenceInCalendarDays(new Date(), date) === 0;
+export const DOTLESS_DATE_FORMAT: string = 'yMMdd';
+export function parseDotlessDate(value: string): Date | null {
+  return parseDate(value, DOTLESS_DATE_FORMAT);
+}
+export function formatDotlessDate(dateTime: number | Date): string {
+  return format(dateTime, DOTLESS_DATE_FORMAT, { locale: de });
 }