YuCJ

function updateElementInRef(element, ref) {
  if (typeof ref === 'function') {
    /*
      The ref is a callback ref.
      https://reactjs.org/docs/refs-and-the-dom.html#callback-refs
    */
    ref(element)
  } else if (ref) {
    /*
      The ref is an object expected to be mutated with property `current`.

YuCJ

TanStack Query State Indicators: isFetching, isLoading, and isPending

Overview

Understanding the differences between isFetching, isLoading, and isPending is crucial for implementing effective loading states in TanStack Query (React Query) v5.

Definitions

1. isPending

• true when the query has no cached data yet (awaiting first successful fetch)