refactor: deobfuscate getEaster function

src/lib/events.ts

@@ -14,25 +14,25 @@ type MonthName =
 	| 'november'
 	| 'december';
 
+// prettier-ignore
 const getEaster = (): Moment => {
 	const currentYear = new Date().getFullYear();
+	const yearMod19 = currentYear % 19;
+	const century = Math.floor(currentYear / 100);
+	const yearInCentury = currentYear % 100;
+	const centuryQuotient = Math.floor(century / 4);
+	const centuryRemainder = century % 4;
+	const specialCenturyTerm = Math.floor((century + 8) / 25);
+	const specialCenturyCorrection = Math.floor((century - specialCenturyTerm + 1) / 3);
+	const lunarCorrection = (19 * yearMod19 + century - centuryQuotient - specialCenturyCorrection + 15) % 30;
+	const yearQuotient = Math.floor(yearInCentury / 4);
+	const yearRemainder = yearInCentury % 4;
+	const dayOfWeekCorrection = (32 + 2 * centuryRemainder + 2 * yearQuotient - lunarCorrection - yearRemainder) % 7;
+	const specialLunarCorrection = Math.floor((yearMod19 + 11 * lunarCorrection + 22 * dayOfWeekCorrection) / 451);
+	const easterMonth = Math.floor((lunarCorrection + dayOfWeekCorrection - 7 * specialLunarCorrection + 114) / 31);
+	const easterDay = ((lunarCorrection + dayOfWeekCorrection - 7 * specialLunarCorrection + 114) % 31) + 1;
 
-	const a = currentYear % 19,
+	return moment(new Date(currentYear, easterMonth - 1, easterDay));
-		b = Math.floor(currentYear / 100),
-		c = currentYear % 100,
-		d = Math.floor(b / 4),
-		e = b % 4,
-		f = Math.floor((b + 8) / 25),
-		g = Math.floor((b - f + 1) / 3),
-		h = (19 * a + b - d - g + 15) % 30,
-		i = Math.floor(c / 4),
-		k = c % 4,
-		L = (32 + 2 * e + 2 * i - h - k) % 7,
-		m = Math.floor((a + 11 * h + 22 * L) / 451),
-		month = Math.floor((h + L - 7 * m + 114) / 31),
-		day = ((h + L - 7 * m + 114) % 31) + 1;
-
-	return moment(new Date(currentYear, month - 1, day));
 };
 
 export const events = {