fix(DatePicker): only throw error in development (#11248)

packages/vant/src/date-picker/DatePicker.tsx

@@ -128,10 +128,13 @@ export default defineComponent({
           case 'day':
             return genDayOptions();
           default:
+            if (process.env.NODE_ENV !== 'production') {
               throw new Error(
                 `[Vant] DatePicker: unsupported columns type: ${type}`
               );
             }
+            return [];
+        }
       })
     );
 

packages/vant/src/time-picker/TimePicker.tsx

@@ -83,10 +83,13 @@ export default defineComponent({
               filter
             );
           default:
+            if (process.env.NODE_ENV !== 'production') {
               throw new Error(
                 `[Vant] DatePicker: unsupported columns type: ${type}`
               );
             }
+            return [];
+        }
       })
     );