Why Javascript waits for promises to fulfil-CodePudding

I'm learning promises and I came across this piece of code

async function main() {
  await new Promise((resolve, reject) => {
    setTimeout(() => {
      console.log("hello");
      resolve();
    }, 1000);
  });
  console.log("world");
}

main();

The output this produces is "hello world".

What I'm not able to understand is why the inner console log "console.log("world")" is waiting for the promise to resolve.

Am I missing something here, it would be nice if I can get some help understanding this or maybe some link to some documentation for further reading.

Thanks in advance.

CodePudding user response：

Knowledge of JS Event Loop await with promise keyword waits for the resolve or reject Fireship has a pretty good explanation https://www.youtube.com/watch?v=vn3tm0quoqE&t=587s&ab_channel=Fireship

CodePudding user response：

Because this is how promises work. They are designed to always return a clear result. Read https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Promise for more info.