Disabling/Pausing Queries

function Todos() {
  const [filter, setFilter] = useState('')

  const { data } = useQuery({
    queryKey: ['todos', filter],
    queryFn: () => fetchTodos(filter),
    // ⬇️ disabled as long as the filter is empty
    enabled: !!filter,
  })

  return (
    <div>
      // 🚀 applying the filter will enable and execute the query
      <FiltersForm onApply={setFilter} />
      {data && <TodosTable data={data} />}
    </div>
  )
}

import { skipToken, useQuery } from '@tanstack/preact-query'

function Todos() {
  const [filter, setFilter] = useState<string | undefined>()

  const { data } = useQuery({
    queryKey: ['todos', filter],
    // ⬇️ disabled as long as the filter is undefined or empty
    queryFn: filter ? () => fetchTodos(filter) : skipToken,
  })

  return (
    <div>
      // 🚀 applying the filter will enable and execute the query
      <FiltersForm onApply={setFilter} />
      {data && <TodosTable data={data} />}
    </div>
  )
}