Observable API Proposal

Re:Observable API Proposal by kitten_mittens_ on Friday July 28, 2023 @08:34PM (#36915414)

I agree with your point. On

> Anything with a `then` method can be awaited, and so native Promises aren’t actually all the special or sacred. Invoking await on an expression involves no extra machinery, only that a Promise-like object is returned.

note that _anything_ can be awaited in JS.

``` const x = await null; console.log(x) ```

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Re:Observable API Proposal by TeffenEllis on Friday July 28, 2023 @08:49PM (#36915549)

Huh wow! I did not know that! I think TypeScript always kept this hidden from me, but it makes sense. Another perk of `await` is that it collapses all promises into their final value, regardless of how many nested pending promises are expressed:

  const foo = await Promise.resolve(Promise.resolve("abc"))

  console.log(foo.length) // 3

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Re:Observable API Proposal by bakkoting on Saturday July 29, 2023 @12:36PM (#36921902)

It's not `await` which is doing that; it's the Promises themselves. For example:

   Promise.resolve(Promise.resolve("abc")).then(console.log)

This will print `"abc"`, not `Promise.resolve("abc")`.

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