【BUG】"await" should be a type error other than "Promise"

[kgtkr]

BUG

TypeScript Version:2.1.6

Code

//example
(async()=>{
  await 1;
  await "";
  await new Date();
  await [];
  await null;
  await undefined;
})();

Expected behavior:Type error

Actual behavior:Successful compilation

[aluanhaddad]

But that is OK. See the behavior of await as documented
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/await
Specifically MDN states that:

If the value is not a Promise, it converts the value to a resolved Promise, and waits for it.

[ghost]

Tslint has a rule for this. https://palantir.github.io/tslint/rules/await-promise/

[aluanhaddad]

Thank you. I am going to go turn that on.

[RyanCavanaugh]

Previously discussed at #8310 and #9921

[kgtkr]

I understand.
Thank you.