autoConst not producing const

[danielbayley]

"civet autoConst"

1. Does not work with destructuring, for example:

str = "string"
export {length} = str

fails to parse, instead of producing:

export const {length} = str

2. Does not work with functions, for example:

export func = =>

does not produce:

export const func = () => {}

[edemaine]

Thanks for the report! There are two things going on here:

1. {length} = str does not produce const {length} = str. It actually produces let, maybe via Hoist array binding and rest ref declarations. Fixes #1139. Fixes #1312 #1314?
2. export {length} = str doesn't parse at all. It seems like a natural extension to export syntax though. We could transpile to const {length} = str; export {length}. Though without autoConst I'm not totally sure whether length should be exposed to the body like this...