getStackByFiberInDevAndProd() — react Function Reference

Source Code

packages/react-devtools-shared/src/backend/fiber/DevToolsFiberComponentStack.js lines 88–115

export function getStackByFiberInDevAndProd(
  workTagMap: WorkTagMap,
  workInProgress: Fiber,
  currentDispatcherRef: CurrentDispatcherRef,
): string {
  try {
    let info = '';
    let node: Fiber = workInProgress;
    do {
      info += describeFiber(workTagMap, node, currentDispatcherRef);
      // Add any Server Component stack frames in reverse order.
      const debugInfo = node._debugInfo;
      if (debugInfo) {
        for (let i = debugInfo.length - 1; i >= 0; i--) {
          const entry = debugInfo[i];
          if (typeof entry.name === 'string') {
            info += describeDebugInfoFrame(entry.name, entry.env);
          }
        }
      }
      // $FlowFixMe[incompatible-type] we bail out when we get a null
      node = node.return;
    } while (node);
    return info;
  } catch (x) {
    return '\nError generating stack: ' + x.message + '\n' + x.stack;
  }
}