implicitAny doesn't work for 2.5.2

[michael8090]

TypeScript Version: 2.5.2

Code

const a = [];

Expected behavior:
TS should show an error message when noImplicitAny is on;
Actual behavior:
No error message is shown, and a has a type of "any[]", as below:

[ahejlsberg]

This is working as intended. See #11432.

[michael8090]

@ahejlsberg You're right. Thanks