Is it necessary to include async/await in a method if there is already an await keyword where it is invoked?

Here are the two methods I have written in Typescript:

async getCertURL(pol: string): Promise<string> {
  return await Api.getData(this.apiUrl + pol + this.certEndpoint, {timeout: 60000}).then(
    (response) => {
      return response.data.certURL;
    })
    .catch((err) => 
      this.loggingService.logError('Error generating reissue cert forward URL ' + err));
}

async getCert(pol: string): Promise<string> {
return Api.getData(await this.getCertURL(policy), {timeout: 60000}).then(
  (response) => {
    return response.data;
  })
.catch((err) => 
  this.loggingService.logError('Error cert not reissued ' + err));
}

In my getCert() method, I tried using an await before await this.getCertURL(policy) to avoid needing one at Api.getData() in getCertURL. However, getCert() throws an exception without it.

Should I include the await as I did, or is there a different approach I should be taking?

Answer №1

Using await is important when dealing with promises to get the resolved value instead of the promise itself.

Since the function getCertURL is asynchronous, it will return a promise.

If you need to access the actual value, then using await is necessary.


Alternatively, if within the getCertURL function, you are simply returning the promise without manipulating its value from Api.getData().then().catch(), you could eliminate the use of await and async. For clearer code, consider replacing then() and catch() with await and try {} catch {}.

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