=== tests/cases/compiler/external.d.ts ===

export default class C {}
>C : Symbol(C, Decl(external.d.ts, 0, 0))

=== tests/cases/compiler/main.ts ===

No type information for this code.declare module "M" {
No type information for this code.    export * from "external"
No type information for this code.}
No type information for this code.