// a.ts
export default function a(){
console.log('i am a');
}

// b.ts
export default function b(){
console.log('i am b');
}

// c.ts
export { default as a } from 'a';
export { default as b } from 'b';

// d.ts

import d from './d'; // for some reason I don't want force my team worker use import d = require('d');

d.a();  // now d is undefined cause I am using esModuleInterop flag while compling into js.