Reject PlainYearMonth with different calendar in comparison

fabon-f · Oct 10, 2024 · 197c7c9 · 197c7c9
1 parent c1ba1f1
commit 197c7c9
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/src/datetime/_compare.ts b/src/datetime/_compare.ts
@@ -56,6 +56,9 @@ export function compare(a: ComparableDateTimeType, b: ComparableDateTimeType) {
 		return getConstructor(a).compare(a, b);
 	}
 	if (isPlainYearMonth(a) && isPlainYearMonth(b)) {
+		if (a.calendarId !== b.calendarId) {
+			throw new Error("Can't compare PlainYearMonth with different calendar");
+		}
 		return getConstructor(a).compare(a, b);
 	}
 	if (isPlainMonthDay(a) || isPlainMonthDay(b)) {