Defining just the interface and type for class

I want to define just the interface and type for the class..

What am I doing?I am creating a React Native Turbo module which require me to pass interface which extends TurboModule

This is class looks for which I want to write interface (this interface should extend turboModule)

export default class Thread {  constructor(jsPath) {    if (!jsPath || !jsPath.endsWith('.js')) {      throw new Error('Invalid path for thread. Only js files are supported');    }    this.id = ThreadManager.startThread(jsPath.replace(".js", ""))      .then(id => {        DeviceEventEmitter.addListener(`Thread${id}`, (message) => {          !!message && this.onmessage && this.onmessage(message);        });        return id;      })      .catch(err => { throw new Error(err) });  }  postMessage(message) {    this.id.then(id => ThreadManager.postThreadMessage(id, message));  }  terminate() {    this.id.then(ThreadManager.stopThread);  }}

This is what I have written

export interface ThreadInterface {  postMessage(msg: string): void;  onMessage(msg: string): void;  terminate(): void;}interface ThreadConstructor {  new (path: string): ThreadInterface;}declare let ThreadInterface: ThreadConstructor;export interface ThreadsSpec extends TurboModule, ThreadInterface {}

Is this correct? also when I do this

class Thread implements ThreadInterface {  constructor(jsPath:string) {    }

here I have to mention jsPath as string, or else typescript consider it as any. I was expecting constructor to pick value from here:

  new (path: string): ThreadInterface;

This is based out of this answer: https://stackoverflow.com/a/46971111/10433835