v1.0 with SW PWA enabled

frontend/node_modules/date-fns/_lib/protectedTokens.mjs

@@ -0,0 +1,23 @@
+const dayOfYearTokenRE = /^D+$/;
+const weekYearTokenRE = /^Y+$/;
+
+const throwTokens = ["D", "DD", "YY", "YYYY"];
+
+export function isProtectedDayOfYearToken(token) {
+  return dayOfYearTokenRE.test(token);
+}
+
+export function isProtectedWeekYearToken(token) {
+  return weekYearTokenRE.test(token);
+}
+
+export function warnOrThrowProtectedError(token, format, input) {
+  const _message = message(token, format, input);
+  console.warn(_message);
+  if (throwTokens.includes(token)) throw new RangeError(_message);
+}
+
+function message(token, format, input) {
+  const subject = token[0] === "Y" ? "years" : "days of the month";
+  return `Use \`${token.toLowerCase()}\` instead of \`${token}\` (in \`${format}\`) for formatting ${subject} to the input \`${input}\`; see: https://github.com/date-fns/date-fns/blob/master/docs/unicodeTokens.md`;
+}