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Add tests for '@reach/utils' and compatibility check with react 18 #960

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@dartess dartess commented Aug 25, 2022

Hi.

I covered all the hooks with tests, except for useIsomorphicLayoutEffect (I have no idea what and how to honestly test there). I don’t see the point in covering individual helpers within this task with tests, mostly they are too simple and/or do not rely to React.

In some hooks, I found problems that I fixed:

  • two bugs in useFocusChange that commented below;
  • insufficient typing in useLazyRef - unnecessarily used any;
  • useUpdateEffect - the cleanup return from the effect was missed, the effects were not cleaned.

I also checked the work of all tests in StrictMode (including react@18). One of the hooks required a rewrite - this is useUpdateEffect. Now it works as intended.

@dartess dartess marked this pull request as draft August 25, 2022 13:26
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This pull request is automatically built and testable in CodeSandbox.

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reach-ui-template Configuration

);
lastActiveElement.current = ownerDocument.activeElement;
if (
when === "focus" &&
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If do not check it and try use this hook with blur, handleChange will never be called, because ownerDocument.activeElement will be always ownerDocument.body.

}

ownerDocument.addEventListener(when, onChange, true);

return () => {
ownerDocument.removeEventListener(when, onChange);
ownerDocument.removeEventListener(when, onChange, true);
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removing the handler didn't work before.
demo: https://codepen.io/dartess/pen/rNdgWEj

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