I want to import js class into ts.
But I got error This expression is not constructable.

and typescript compiler says that A does not have constructor signature.

how can I solve this?

index.ts

import A from "aaa";

const a = new A(); //error: this expression is not constructable.  

  

/*

and result of console.log(A); is [Function: A].



result of console.log(A.toString()); is below

class A {

  constructor(name) { this.name = name; }

}

*/

index.js in the aaa module.

class A {

  constructor(name) { this.name = name; }

}

module.exports = A;

index.d.ts in the aaa module.

export declare class A {

  constructor(name:string);



  name:string;

} 

and I can construct A in js with code below. but can't in ts.

const A = require("aaa");

const a = new A();