JavaScript - Async Await

Async Await

• async before a function means the function always returns a promise.
• await works inside async functions. Waits until that promise settles and returns its result before continuing.
• await doesn’t work in the top-level code. It needs to be contained within an async function for the code that it’s waiting for.

Example Test in Jest

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1it("returns London temperature as a number", async () => {
2  const londonWeather = await weather.londonWeatherForOneDay();
3  expect(typeof londonWeather).toEqual("number");
4});