Function isErrorBoundary

packages/react-devtools-shared/src/backend/fiber/renderer.js:6393–6408

(fiber: Fiber)

  }

  function isErrorBoundary(fiber: Fiber): boolean {
    const {tag, type} = fiber;

    switch (tag) {
      case ClassComponent:
      case IncompleteClassComponent:
        const instance = fiber.stateNode;
        return (
          typeof type.getDerivedStateFromError === 'function' ||
          (instance !== null &&
            typeof instance.componentDidCatch === 'function')
        );
      default:
        return false;
    }
  }

  function inspectElementRaw(id: number): InspectedElement | null {
    const devtoolsInstance = idToDevToolsInstanceMap.get(id);