Re-exporting namespace declarations in ES6 ambient declaration

Right now many declaration files take this form:

declare namespace MyLib {

}

declare module 'myLib' {
  export = MyLib;
}

However, there doesn't seem to be an equivalent for ES6 modules:

declare module 'myLib' {
  export default MyLib; // this works for exporting the default, but other exported items in MyLib are not considered to be named exports of the ES6 module
  export * from MyLib; // this is essentially what I'm trying to accomplish
}

The issue names no files or tests. Start with TypeScript's handling of ambient namespace declarations and ES6 module exports, then determine the intended re-export semantics for MyLib. Done means the namespace members are recognized as named exports of the declared ES6 module, with the behavior verified by suitable compiler tests.