Function handleThrow

packages/react-reconciler/src/workLoop.ts:429–450

(root: FiberRootNode, thrownValue: any)

}

function handleThrow(root: FiberRootNode, thrownValue: any): void {
	/*
		throw可能的情况
			1. use thenable
			2. error (Error Boundary处理)
	*/
	if (thrownValue === SuspenseException) {
		workInProgressSuspendedReason = SuspendedOnData;
		thrownValue = getSuspenseThenable();
	} else {
		const isWakeable =
			thrownValue !== null &&
			typeof thrownValue === 'object' &&
			typeof thrownValue.then === 'function';

		workInProgressThrownValue = thrownValue;
		workInProgressSuspendedReason = isWakeable
			? SuspendedOnDeprecatedThrowPromise
			: SuspendedOnError;
	}
	workInProgressThrownValue = thrownValue;
}

function throwAndUnwindWorkLoop(
	root: FiberRootNode,