async constructor functions in TypeScript?

Question

I have some setup I want during a constructor, but it seems that is not allowed

Which means I can\'t use:

How else should I do this?

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Answer 1

I've found a solution that looks like

export class SomeClass {
  private initialization;

  // Implement async constructor
  constructor() {
    this.initialization = this.init();
  }

  async init() {
    await someAsyncCall();
  }

  async fooMethod() {
    await this.initialization();
    // ...some other stuff
  }

  async barMethod() {
    await this.initialization();
    // ...some other stuff
  }

It works because Promises that powers async/await, can be resolved multiple times with the same value.