Fix for #56

SpiritIT · May 6, 2021 · 0fe27bc · 0fe27bc
1 parent f3c0abb
commit 0fe27bc
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diff --git a/src/lib/basics.ts b/src/lib/basics.ts
@@ -373,7 +373,7 @@ export function weekOfMonth(year: number, month: number, day: number): number {
  // Last week of previous month
  if (month > 1) {
  // Default case
- return weekOfMonth(year, month - 1, 31);
+ return weekOfMonth(year, month - 1, daysInMonth(year, month - 1));
  } else {
  // January
  return weekOfMonth(year - 1, 12, 31);

diff --git a/src/test/test-basics.ts b/src/test/test-basics.ts
@@ -449,6 +449,10 @@ describe("weekOfMonth()", (): void => {
  expect(basics.weekOfMonth(2016, 1, 3)).to.equal(5);
  expect(basics.weekOfMonth(2016, 1, 4)).to.equal(1);
  });
+
+ it("should not have issue #56", (): void => {
+ expect(basics.weekOfMonth(2021, 5, 1)).to.equal(5);
+ });
 });
 
 describe("secondsInDay()", (): void => {