How the signature of React.memo looks like now?

In D15111#416415, @tomek wrote:

How the signature of React.memo looks like now?

Here is the memo definition: https://github.com/facebook/flow/blame/790c283d004c622e6501fd693689b955ed7f8d47/lib/react.js#L533
And here is the commit that changes the definition: https://github.com/facebook/flow/commit/dfa0f78f2a9a643860ea1bf417dba472f85623c1
And here is changelog entry:

React.lazy and React.memo is now generic over the presence or absence of ref prop.

In D15111#416430, @tomek wrote:

It is quite disappointing that Flow can't deduce the generic parameters, or that void isn't a default... (Have you checked if it can't deduce the generic parameters?).

If I delete the void parameter I'm getting errors like this:

Error ┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈ profile/delete-account.react.js:39:51

Cannot use function type [1] with fewer than 2 type arguments. [missing-type-arg]

     profile/delete-account.react.js
      36│   +navigation: ProfileNavigationProp<'DeleteAccount'>,
      37│   +route: NavigationRoute<'DeleteAccount'>,
      38│ };
      39│ const DeleteAccount: React.ComponentType<Props> = React.memo<Props>(
      40│   function DeleteAccount() {
      41│     const deleteAccountLoadingStatus = useSelector(
      42│       deleteAccountLoadingStatusSelector,

     /private/tmp/flow/flowlib_aa7351e11f4f1182_501/react.js
 [1] 534│     declare function memo<Config: {...}, Ref, Renders: React.Node = React.Node>(

In D15111#416526, @angelika wrote:

In D15111#416430, @tomek wrote:

It is quite disappointing that Flow can't deduce the generic parameters, or that void isn't a default... (Have you checked if it can't deduce the generic parameters?).

If I delete the void parameter I'm getting errors like this:

Error ┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈ profile/delete-account.react.js:39:51

Cannot use function type [1] with fewer than 2 type arguments. [missing-type-arg]

     profile/delete-account.react.js
      36│   +navigation: ProfileNavigationProp<'DeleteAccount'>,
      37│   +route: NavigationRoute<'DeleteAccount'>,
      38│ };
      39│ const DeleteAccount: React.ComponentType<Props> = React.memo<Props>(
      40│   function DeleteAccount() {
      41│     const deleteAccountLoadingStatus = useSelector(
      42│       deleteAccountLoadingStatusSelector,

     /private/tmp/flow/flowlib_aa7351e11f4f1182_501/react.js
 [1] 534│     declare function memo<Config: {...}, Ref, Renders: React.Node = React.Node>(

Thanks! Could you also check deleting both parameters? const DeleteAccount: React.ComponentType<Props> = React.memo(

In D15111#417431, @angelika wrote:

In D15111#416589, @tomek wrote:

Thanks! Could you also check deleting both parameters? const DeleteAccount: React.ComponentType<Props> = React.memo(

Checked and deleting both parameters works. Updated the diff

Nice! Could you make sure that the parameters are deleted in all the places?

Removed the leftover parameters - my regex didn't catch them previously