📝 Commit Details:

backend/node_modules/date-fns/milliseconds.js

@@ -0,0 +1,58 @@
+import { daysInYear } from "./constants.js";
+
+/**
+ * @name milliseconds
+ * @category Millisecond Helpers
+ * @summary
+ * Returns the number of milliseconds in the specified, years, months, weeks, days, hours, minutes and seconds.
+ *
+ * @description
+ * Returns the number of milliseconds in the specified, years, months, weeks, days, hours, minutes and seconds.
+ *
+ * One years equals 365.2425 days according to the formula:
+ *
+ * > Leap year occurs every 4 years, except for years that are divisible by 100 and not divisible by 400.
+ * > 1 mean year = (365+1/4-1/100+1/400) days = 365.2425 days
+ *
+ * One month is a year divided by 12.
+ *
+ * @param duration - The object with years, months, weeks, days, hours, minutes and seconds to be added.
+ *
+ * @returns The milliseconds
+ *
+ * @example
+ * // 1 year in milliseconds
+ * milliseconds({ years: 1 })
+ * //=> 31556952000
+ *
+ * // 3 months in milliseconds
+ * milliseconds({ months: 3 })
+ * //=> 7889238000
+ */
+export function milliseconds({
+  years,
+  months,
+  weeks,
+  days,
+  hours,
+  minutes,
+  seconds,
+}) {
+  let totalDays = 0;
+
+  if (years) totalDays += years * daysInYear;
+  if (months) totalDays += months * (daysInYear / 12);
+  if (weeks) totalDays += weeks * 7;
+  if (days) totalDays += days;
+
+  let totalSeconds = totalDays * 24 * 60 * 60;
+
+  if (hours) totalSeconds += hours * 60 * 60;
+  if (minutes) totalSeconds += minutes * 60;
+  if (seconds) totalSeconds += seconds;
+
+  return Math.trunc(totalSeconds * 1000);
+}
+
+// Fallback for modularized imports:
+export default milliseconds;