construction.ts

interface ThingOptions {
  owner: string;
  title: string;
}

class Thing {
  // this is fine
  constructor({ owner, title = 'Thing' }) {

  }

  // if you need to do something async for construction:
  static async create(options: ThingOptions): Promise<Thing> {
    const dep = await getDep(options.owner);
    return new Thing({ ...options, dep });
  }
}