This reverts commit 9d2c91598b.
9d2c91598b
Ref #5522
* Upgeade to jest 19 * Use jest.spyOn
* update snapshots * update snapshots * support notification pop up from topLeft or bottomRight or bottomLeft * update snapshots * 1. add test 2. update doc 3. support `placement` arguments in `open` method * update doc * update doc.