Function inspectHooks

packages/react-debug-tools/src/ReactDebugHooks.js:1197–1230

(
  renderFunction: Props => React$Node,
  props: Props,
  currentDispatcher: ?CurrentDispatcherRef,
)

}

export function inspectHooks<Props>(
  renderFunction: Props => React$Node,
  props: Props,
  currentDispatcher: ?CurrentDispatcherRef,
): HooksTree {
  // DevTools will pass the current renderer's injected dispatcher.
  // Other apps might compile debug hooks as part of their app though.
  if (currentDispatcher == null) {
    currentDispatcher = ReactSharedInternals;
  }

  const previousDispatcher = currentDispatcher.H;
  currentDispatcher.H = DispatcherProxy;

  let readHookLog;
  let ancestorStackError;

  try {
    ancestorStackError = new Error();
    renderFunction(props);
  } catch (error) {
    handleRenderFunctionError(error);
  } finally {
    readHookLog = hookLog;
    hookLog = [];
    // $FlowFixMe[incompatible-use] found when upgrading Flow
    currentDispatcher.H = previousDispatcher;
  }
  const rootStack =
    ancestorStackError === undefined
      ? ([]: ParsedStackFrame[])
      : ErrorStackParser.parse(ancestorStackError);
  return buildTree(rootStack, readHookLog);
}

function setupContexts(contextMap: Map<ReactContext<any>, any>, fiber: Fiber) {
  let current: null | Fiber = fiber;