Lesson 14 — Async / Await

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Syntax

Declare async functions with async fn. They return a Promise. Use await inside them to wait for other Promises:

async fn fetch-data url
  const res be await fetch[url]
  return await res.json[]

Anonymous async functions work too:

const handler be async fn event to await process[event]

Task

Make compute:

1. await slow-double[x] and store the result

2. return the result plus 1

So compute[5] resolves to 11.

Check

npm test 14

Learn more

• Functions — Async functions