从Typescript声明文件中的模块导出默认值

Question

Let's say I have a declarations file foo.d.ts :

declare namespace foo {
  interface Bar {
    (): void;
  }
}

declare var foo: foo.Bar;
export default foo;

If I compile this:

import Foo from './foo';
Foo();

The resulting output is:

"use strict";
var foo_1 = require('./foo');
foo_1["default"]();

However this code won't run as foo_1 is a function and has no property default . How can I get the output to be foo_1() instead of foo_1["default"]() ?

Answer 1

Use

export = foo;

instead of export default foo; in your declaration file

and use import require when importing:

import Foo = require('./foo');

Export assignment/import require is special syntax in typescript for dealing with node modules with exports like

module.exports = function someFunction() {}