false positive bug

[kentcdodds]

Hi there! I'm still so new at Flow that I honestly have no idea how to describe this bug, but here's a reproduction

/* @flow */

type Element = {};
type Document = {getElementById(string): Element | null};

declare var document: Document;

type InitOptions = {
  messagesNode?: Element | void
}

function init({
  messagesNode = document.getElementById('react-messages')
}: InitOptions) {
  // blah blah
  return messagesNode
}

function workingInit(options: InitOptions) {
  const {
    messagesNode = document.getElementById('react-messages')
  } = options
  // blah blah
  return messagesNode
}

For some reason, moving the destructuring from the param list to the function body works. I'm pretty sure that this is a bug. Or I'm just doing something dumb 🤷‍♂️

Thanks!

[kentcdodds]

Ah, looks like this might be related: #183

Feel free to close if you'd like

[Jacse]

This is definitely a complete duplicate of #183 so I think you should close this issue and we'll focus our efforts on the original one.