[pickers] Fix DateBuilderReturnType when the date is undefined (#…

…13244)
mui · May 27, 2024 · 36381a3 · 36381a3
1 parent 769b00e
commit 36381a3
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Showing 2 changed files with 7 additions and 1 deletion.
diff --git a/packages/x-date-pickers/src/models/adapters.ts b/packages/x-date-pickers/src/models/adapters.ts
@@ -155,7 +155,7 @@ export type AdapterOptions<TLocale, TInstance> = {
   locale?: TLocale;
 } & PropertyIfNotNever<'instance', TInstance>;
 
-export type DateBuilderReturnType<T extends string | null | undefined, TDate> = T extends null
+export type DateBuilderReturnType<T extends string | null | undefined, TDate> = [T] extends [null]
   ? null
   : TDate;
 

diff --git a/test/utils/pickers/describeGregorianAdapter/testCalculations.ts b/test/utils/pickers/describeGregorianAdapter/testCalculations.ts
@@ -118,6 +118,12 @@ export const testCalculations: DescribeGregorianAdapterTestSuite = ({
         ).to.be.lessThan(5);
       }
     });
+
+    it('should work without args', () => {
+      const date = adapter.date().valueOf();
+
+      expect(Math.abs(date - Date.now())).to.be.lessThan(5);
+    });
   });
 
   it('Method: getTimezone', () => {