Nice-to-have: Destructuring in each blocks

[jacobmischka]

It would be handy if we could destructure the target item of the iterated array, ie

{{#each Array.from(map.entries()) as [key, value]}}
	...
{{/each}}

Currently, this results in ParseError: Expected name. REPL.

Vue supports this in their v-for directives, so it might be possible to reference that to get hints on how to properly parse it.

[stalkerg]

Recently I met this behavior too.