Function peekCacheFromPool

packages/react-reconciler/src/ReactFiberTransition.js:208–224

()

  createCursor(null);

function peekCacheFromPool(): Cache | null {
  // Check if the cache pool already has a cache we can use.

  // If we're rendering inside a Suspense boundary that is currently hidden,
  // we should use the same cache that we used during the previous render, if
  // one exists.
  const cacheResumedFromPreviousRender = resumedCache.current;
  if (cacheResumedFromPreviousRender !== null) {
    return cacheResumedFromPreviousRender;
  }

  // Otherwise, check the root's cache pool.
  const root = (getWorkInProgressRoot(): any);
  const cacheFromRootCachePool = root.pooledCache;

  return cacheFromRootCachePool;
}

export function requestCacheFromPool(renderLanes: Lanes): Cache {
  // Similar to previous function, except if there's not already a cache in the