Function prepareToReadContext

lib/assets/react-source/development/react.js:15759–15778

(workInProgress, renderExpirationTime)

	  }
	}
	function prepareToReadContext(workInProgress, renderExpirationTime) {
	  currentlyRenderingFiber = workInProgress;
	  lastContextDependency = null;
	  lastContextWithAllBitsObserved = null;
	  var dependencies = workInProgress.dependencies;

	  if (dependencies !== null) {
	    var firstContext = dependencies.firstContext;

	    if (firstContext !== null) {
	      if (dependencies.expirationTime >= renderExpirationTime) {
	        // Context list has a pending update. Mark that this fiber performed work.
	        markWorkInProgressReceivedUpdate();
	      } // Reset the work-in-progress list


	      dependencies.firstContext = null;
	    }
	  }
	}
	function readContext(context, observedBits) {
	  {
	    // This warning would fire if you read context inside a Hook like useMemo.