fix(localize): parseDate by default to 2000 instead of 1900 when date…

… is below 49 (#2148)

.changeset/grumpy-bags-give.md

@@ -0,0 +1,5 @@
+---
+'@lion/ui': patch
+---
+
+[localize] parseDate by default to 2000 instead of 1900 when date is below 49

packages/ui/components/localize/src/date/parseDate.js

@@ -58,8 +58,12 @@ export function parseDate(dateString) {
   }
 
   const [year, month, day] = parsedString.split('/').map(Number);
-  const parsedDate = new Date(new Date(year, month - 1, day));
+  let correctedYear = year;
+  if (year < 50) {
+    correctedYear = 2000 + year;
+  }
 
+  const parsedDate = new Date(new Date(correctedYear, month - 1, day));
   // Check if parsedDate is not `Invalid Date` or that the date has changed (e.g. the not existing 31.02.2020)
   if (
     year > 0 &&

packages/ui/components/localize/test/date/parseDate.test.js

@@ -23,6 +23,12 @@ describe('parseDate()', () => {
     localizeTearDown();
   });
 
+  it('handles year correctly', () => {
+    expect(equalsDate(parseDate('1/11/1'), new Date('2001/11/01'))).to.equal(true);
+    expect(equalsDate(parseDate('1/11/49'), new Date('2049/11/01'))).to.equal(true);
+    expect(equalsDate(parseDate('1/11/50'), new Date('1950/11/01'))).to.equal(true);
+  });
+
   it('adds leading zeros', () => {
     expect(equalsDate(parseDate('1-1-1979'), new Date('1979/01/01'))).to.equal(true);
     expect(equalsDate(parseDate('1-11-1979'), new Date('1979/11/01'))).to.equal(true);