getActivityInstanceFromFiber() — react Function Reference

Architecture documentation for the getActivityInstanceFromFiber() function in ReactFiberTreeReflection.js from the react codebase.

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Entity Profile

BabelCompiler→ Validation→ getActivityInstanceFromFiber() — react Function Reference

Dependency Diagram

graph TD
  7736b3ef_2bd2_d9d6_493a_bf1500ce7f16["getActivityInstanceFromFiber()"]
  0dbcf9fa_e6db_e53a_9527_79526654a3ff["ReactFiberTreeReflection.js"]
  7736b3ef_2bd2_d9d6_493a_bf1500ce7f16 -->|defined in| 0dbcf9fa_e6db_e53a_9527_79526654a3ff
  style 7736b3ef_2bd2_d9d6_493a_bf1500ce7f16 fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

packages/react-reconciler/src/ReactFiberTreeReflection.js lines 84–101

export function getActivityInstanceFromFiber(
  fiber: Fiber,
): null | ActivityInstance {
  if (fiber.tag === ActivityComponent) {
    let activityState: ActivityState | null = fiber.memoizedState;
    if (activityState === null) {
      const current = fiber.alternate;
      if (current !== null) {
        activityState = current.memoizedState;
      }
    }
    if (activityState !== null) {
      return activityState.dehydrated;
    }
  }
  // TODO: Implement this on ActivityComponent.
  return null;
}