=== tests/cases/compiler/declFileImportChainInExportAssignment.ts ===
module m {
>m : typeof m

    export module c {
>c : typeof m.c

        export class c {
>c : c
        }
    }
}
import a = m.c;
>a : typeof a
>m : typeof m
>c : typeof a

import b = a;
>b : typeof a
>a : typeof a

export = b;
>b : typeof a