Scott McGinness

Thank you for the playground links! Reproduces the problem nicely. In the non-optional cases above, the tooltip hover still thinks that `func` is a function with a non-optional `(param: string)`...

> Can you add a changelog entry for this change? Instructions are [here](https://github.com/cypress-io/cypress/blob/develop/guides/writing-the-cypress-changelog.md#when-to-add-an-entry). Thanks for the link! I've added this now, having missed that I should do it the first...

> a https://github.com/cypress-io/cypress-documentation/pull/5831 to provide examples based on this PR This looks just like my use cases, so thank you for this. I've left some comments (hope that's alright!) just...