reject happens after await
awaiting promise 0
awaiting promise 1
rejecting promise 1
promise  1 got rejected
awaiting promise 2
reject happens before await
awaiting promise 0
rejecting promise 1
(node:24066) UnhandledPromiseRejectionWarning: Unhandled promise rejection (rejection id: 1): undefined
(node:24066) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.
awaiting promise 1
promise  1 got rejected
awaiting promise 2
(node:24066) PromiseRejectionHandledWarning: Promise rejection was handled asynchronously (rejection id: 1)