Destructuring function expression (without invocation) does not report

[minedeljkovic]

Examples:

Tuple (motivating example):
Try

function foo(): [number, string] { return [1, ''] }
const [a, b] = foo // should report missing function invocation

Ordinary array too, if elements are destructured without rest:
Try

function foo(): [number] { return [1, 2] }
const [a] = foo // should report missing function invocation

But with rest it reports:
Try

function foo(): [number] { return [1, 2] }
const [a, ...b] = foo // reports missing function invocation

Function return type makes no difference:
Try

function foo(): number { return 1 }
const [a] = foo // should report missing function invocation

[vkurchatkin]

Probably related: #1512

[somewhatabstract]

Just encountered a variation of this:
https://flow.org/try/#0JYWwDg9gTgLgBAKjgQwM5wEoFNkGN4BmUEIcARFDvmQNwBQdA9I3AIJyrAA2XAnnAAsIEANZwYA5PEowArlAB26ZHAKyF+YBAUA6Orm2p4s1FgAqA4AoDmcALxwAFAEoAXE5f2AfHAAKxEGBTAB4jKCtrL2dvOABvOjhEuAMlQgV7TCoYHRMsAGFkHgAjPBFHTzsfeKSauBl5dP8SIKwdSlQILgA3LEcyAEk4ABNgIY45AgIyZ3oagF8ZhKT6xVUFejm4BmY2BQgJLChBYREAGmTDWUCbcQEsVWAoIzgi2Xg8XFGsBRhCvhRUKgrhE4MB4EFhlgDCMbio5GAuK0mCwAGJcCAAdzgACsTPAJFYRMoeKD0BisDw9ClnrlWEUwngYFghhYQQ4XO5ytFKn4Ai1QjBwjYojFqklqfAANoEBQAXQyuVZNhcs2WWDkqxlG3oQA

[gkz]

Fixed in 80ca16f