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
}

该 issue 没有指定任何文件或测试。先从 TypeScript 对 ambient namespace declarations 和 ES6 module exports 的处理入手，然后确定 MyLib 预期的重新导出语义。完成的标准是：命名空间成员被识别为所声明 ES6 模块的具名导出，并通过适当的编译器测试验证其行为。