Compiler warns of "Empty block" if {#await} has no immediate contents or {:catch} is not present

[c0bra]

Example REPL (v3)

These two scenarios both result in an "Empty block" warning in the console:

1. Nothing immediately following {#await ...}

{#await promise}
{:then users}
	{#each users.data as user}
		<div>{user.first_name}</div>
	{/each}
{:catch error}
	<p>Error</p>
{/await}

2. {:catch ...} not present or empty:

{#await promise}
    <p>Loading...</p>
{:then users}
	{#each users.data as user}
		<div>{user.first_name}</div>
	{/each}
{/await}

[burningTyger]

The docs should also mention the possibility to just write {#await promise then users} since I'm not very fond of the empty block either (renders too fast in most cases anyway).

Edit: Is there a reason it is then othern than the promise chain? Sounds a bit strange to me. Could use as as well as in {#each promise as user} => {#await primise as user}

[Conduitry]

Looks like there already was an issue for the warning, #1716.

Agree that this short form should be documented though. (I actually wasn't aware it existed.) It's probably easiest to just document it as part of v3, even though it's existed for a while in v2.

[c0bra]

@Conduitry ah yes, I didn't realize there was already an issue filed.