dojo broken on typescript@next: Can't resolve members of merged namespace

[sandersn]

To repro:

$ cd ~/DefinitelyTyped/types/dojo
$ node $ts/built/local/tsc.js

I haven't managed to narrow this down to a small cause yet. Dojo has suspicious structure like this:

declare namespace dojox {
  namespace charting {
    class SimpleTheme { }
    namespace SimpleTheme {
      defaultMarkers: unknown
    }
  }
}
declare module "dojox/charting/SimpleTheme.defaultMarkers" {
  import exp = dojox.charting.SimpleTheme.defaultMarkers
  export=exp;
}

In the import exp = ... line, defaultMarkers is not resolved.

[sandersn]

I bisected this to #28498

[sandersn]

declare namespace dojox {
    namespace charting {
        namespace axis2d {
            export class Val { }
            interface common {
                createText: object;
            }
            namespace common {
                interface createText {
                    gfx(): string
                }
            }
        }
    }
}
declare module "dojox/charting/axis2d/common.createText" {
    import exp = dojox.charting.axis2d.common
    export = exp;
}