useBar() — react Function Reference

Source Code

compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/array-spread-mutable-iterator.js lines 14–26

function useBar({arg}) {
  'use memo';

  /**
   * Note that mutableIterator is mutated by the later object spread. Therefore,
   * `s.values()` should be memoized within the same block as the object spread.
   * In terms of compiler internals, they should have the same reactive scope.
   */
  const s = new Set([1, 5, 4]);
  const mutableIterator = s.values();

  return [arg, ...mutableIterator];
}