react-scripts pins fsevents to a version too old for Node 10 #4896

Is this a bug report?

Yes

Did you try recovering your dependencies?

Yes. I have also attempted working around it with a yarn resolutions field, but it seems yarn resolutions turn optional dependencies into required dependencies.

Which terms did you search for in User Guide?

fsevents

Environment

Environment:
  OS:  macOS 10.14
  Node:  10.5.0
  Yarn:  1.9.2
  npm:  6.1.0
  Watchman:  Not Found
  Xcode:  Xcode 10.0 Build version 10L201y
  Android Studio:  Not Found

Packages: (wanted => installed)
  react: ^16.3.1 => 16.4.1
  react-dom: ^16.3.1 => 16.4.1
  react-scripts: 2.0.0-next.3e165448 => 2.0.0-next.3e165448

Steps to Reproduce

(Write your steps here:)

1. Use node >= 10.4.1 on macOS
2. Create a new project with create-react-app
3. fsevents fails to build fsevents/fsevents#226 happens during yarn install

Expected Behavior

No build errors

Actual Behavior

Huge build error that is elaborated upon on
fsevents/fsevents#226

Updating fsevents to 1.2.4, or to a caret version (^1.2.4) is sufficient to avoid the build error.