Can’t extract a custom React hook

[doasync]

Do you want to request a feature or report a bug?
bug maybe

What is the current behavior?
https://codesandbox.io/s/km21z2l2rv

What is the expected behavior?
I extracted my utils.js to a package. When I replace imports from "./utils" with a real npm package, I get an error: Hooks can only be called inside the body of a function component. (see codesandbox)
Since files are identical, I expect my external file to work the same.

Which versions of React, and which browser / OS are affected by this issue? Did this work in previous versions of React?
React 16.7.0-alpha.2
Chrome Version 70.0.3538.77 (Official Build) (64-bit)

[doasync]

I solved this issue by removing the caret for React dependency in my package.json:

    "react": "16.7.0-alpha.2",
    "react-dom": "16.7.0-alpha.2",

See this comment for more info: facebook/react#14454 (comment)

[CompuIves]

Ahh, so that was it! Glad that it's resolved now 😄.