import type { FC } from 'react' import { useMemo } from 'react' import { useSelector } from 'react-redux' import { createSelector } from 'reselect' import type { RootState } from './cacheSizeProblem' const makeSelectItemsByCategory = (category: string) => createSelector([(state: RootState) => state.items], items => items.filter(item => item.category === category) ) interface Props { category: string } const MyComponent: FC = ({ category }) => { const selectItemsByCategory = useMemo( () => makeSelectItemsByCategory(category), [category] ) const itemsByCategory = useSelector(selectItemsByCategory) return (
{itemsByCategory.map(item => (
{item.name}
))}
) }