withBreak blocks

[Jacob Pratt]

Perhaps I'm missing something, but why wouldn't an `else if` work here?

jhpratt

On Sat, Feb 17, 2018 at 4:02 PM, sagiv ben giat <sagiv.bengiat at gmail.com>
wrote:

> I hope I'm on the right medium for this, I would like to propose a
> language feature.
> withBreak blocks
>
> Well the name might not be the best, but it's just my way to be the most
> clear about this feature proposal.
>
> I often find my self doing this in my code:
>
> const doWork = () => {
>   // try catch omitted for brevity
>   const response = fetchData();
>   do {
>     if (response.error) {
>       log(response.message);
>       break;
>     }
>     if (!response.data) {
>       log("No data");
>       break;
>     }
>     if (!response.data.todos) {
>       log("No Todos");
>       break;
>     }
>     return action({ data: response.data });
>   } while (false);
> };
>
> I'm doing this instead of doing bunch of  if / else if / else blocks or
> ugly nested if blocks.
>  What i would like to have is a block that will let me break without being
> in a loop context.
> Something like this:
> withBreak {
>   if (response.error) {
>     log(response.message);
>     break;
>   }
>   if (!response.data) {
>     log("No data");
>     break;
>   }
>   if (!response.data.todos) {
>     log("No Todos");
>     break;
>   }
>   return action({ data: response.data });
> }
>
> This can be a synthetic sugar for do{}while(false)  behind the scenes.
>
> Best regards,
>
> Sagiv B.G
>
>
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>
>
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