fix: Remove weird, redundant code, fix bug illustrated in #45ce1fa3

Author: maranomynet

src/date_utils.ts

@@ -14,7 +14,7 @@ import { endOfDay } from "date-fns/endOfDay";
 import { endOfMonth } from "date-fns/endOfMonth";
 import { endOfWeek } from "date-fns/endOfWeek";
 import { endOfYear } from "date-fns/endOfYear";
-import { format, longFormatters } from "date-fns/format";
+import { format } from "date-fns/format";
 import { getDate } from "date-fns/getDate";
 import { getDay } from "date-fns/getDay";
 import { getHours } from "date-fns/getHours";
@@ -100,10 +100,6 @@ function getLocaleScope() {
 
 export const DEFAULT_YEAR_ITEM_NUMBER = 12;
 
-// This RegExp catches symbols escaped by quotes, and also
-// sequences of symbols P, p, and the combinations like `PPPPPPPppppp`
-const longFormattingTokensRegExp = /P+p+|P+|p+|''|'(''|[^'])+('|$)|./g;
-
 // ** Date Constructors **
 
 export function newDate(value?: string | Date | number | null): Date {
@@ -166,30 +162,7 @@ export function parseDate(
       isValid(parsedDate) &&
       value === formatDate(parsedDate, dateFormat, locale);
   } else if (!isValid(parsedDate)) {
-    const format = (dateFormat.match(longFormattingTokensRegExp) ?? [])
-      .map(function (substring) {
-        const firstCharacter = substring[0];
-        if (firstCharacter === "p" || firstCharacter === "P") {
-          // The type in date-fns is `Record<string, LongFormatter>` so we can do our firstCharacter a bit loos but I don't think that this is a good idea
-          const longFormatter = longFormatters[firstCharacter]!;
-          return localeObject
-            ? longFormatter(substring, localeObject.formatLong)
-            : firstCharacter;
-        }
-        return substring;
-      })
-      .join("");
-
-    if (value.length > 0) {
-      parsedDate = parse(value, format.slice(0, value.length), new Date(), {
-        useAdditionalWeekYearTokens: true,
-        useAdditionalDayOfYearTokens: true,
-      });
-    }
-
-    if (!isValid(parsedDate)) {
-      parsedDate = new Date(value);
-    }
+    parsedDate = new Date(value);
   }
 
   return isValid(parsedDate) && strictParsingValueMatch ? parsedDate : null;