Incorrect completion offered for `export default` of named function/class

[Jessidhia]

TypeScript Version: 2.5.0-dev.20170622

Code

// a.ts
export default function foo () {}

// b.ts
import * as a from './a'

a./* request completion */

Expected behavior:
default to be offered as the completion options.

Actual behavior:
foo is offered as the completion option.

Fortunately, the type checker correctly expects default as the key. Calling a.default() will work, but a.foo() (as suggested by the completions) will error with "Property 'foo' does not exist on type".

Also possibly related is that import { /* request completion */ } from './a' does not list default as an option (it should), but it at least does not list foo.