Component() — react Function Reference

Source Code

compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/preserve-memo-validation/useCallback-nonescaping.js lines 4–15

function Component({entity, children}) {
  // showMessage doesn't escape so we don't memoize it.
  // However, validatePreserveExistingMemoizationGuarantees only sees that the scope
  // doesn't exist, and thinks the memoization was missed instead of being intentionally dropped.
  const showMessage = useCallback(() => entity != null, [entity]);

  if (!showMessage()) {
    return children;
  }

  return <div>{children}</div>;
}