TypeScript Version: 3.8.0-dev.20200128

Search Terms:

• import type
• extends interface

Code
For the TS:

import type * as iface from './iface';

interface Foo extends iface.IFace { }

Expected behavior:
No errors. iface is only being used as a type, not a value

Actual behavior:
Error:

'iface' cannot be used as a value because it was imported using 'import type'

This code previously did not produce errors in TS 3.8-beta

Related issues

• 'import type * as namespace' no longer can be used with 'implements' #36428

/cc @andrewbranch