Typescript Return List of Promises

Question

I'm trying to get a list of organization account id's from our AWS account.

I have the following code

const acc_list: string[] = [];

(async () => {
  const orgs = await aws.organizations.getOrganization();
  orgs.accounts.forEach(account => 
    acc_list.push(account.id))
})()

console.log(acc_list)

Which logs an empty list because clearly the console command is running before the promise.

My goal is I want to send the list of accounts to a different function (different file) in my typescript application. No clue how to do that.

Answer 1

The problem is that the function you've created async () => { ... } actually returns a Promise that you still need to await. So, wrapping an asynchronous code into such async lambda doesn't make sence because the code block remains asynchronous. I can suggest you this tutorial.

A solution depends on the problem context, might be the whole block should be asynchronous, like:

async function printAccountIds() {
  const orgs = await aws.organizations.getOrganization();
  const accountIds = orgs.accounts.map(account => account.id);
  console.log(accountIds);
}

Or you can just subscribe to the promise, like:

aws.organizations.getOrganization().then(orgs => {
  const accountIds = orgs.accounts.map(account => account.id);
  console.log(accountIds);
});