Function spawnNewSuspendedRenderTask

packages/react-server/src/ReactFizzServer.js:4087–4127

(
  request: Request,
  task: RenderTask,
  thenableState: ThenableState | null,
)

}

function spawnNewSuspendedRenderTask(
  request: Request,
  task: RenderTask,
  thenableState: ThenableState | null,
): RenderTask {
  // Something suspended, we'll need to create a new segment and resolve it later.
  const segment = task.blockedSegment;
  const insertionIndex = segment.chunks.length;
  const newSegment = createPendingSegment(
    request,
    insertionIndex,
    null,
    task.formatContext,
    // Adopt the parent segment's leading text embed
    segment.lastPushedText,
    // Assume we are text embedded at the trailing edge
    true,
  );
  segment.children.push(newSegment);
  // Reset lastPushedText for current Segment since the new Segment "consumed" it
  segment.lastPushedText = false;
  return createRenderTask(
    request,
    thenableState,
    task.node,
    task.childIndex,
    task.blockedBoundary,
    newSegment,
    task.blockedPreamble,
    task.hoistableState,
    task.abortSet,
    task.keyPath,
    task.formatContext,
    task.context,
    task.treeContext,
    task.row,
    task.componentStack,
    !disableLegacyContext ? task.legacyContext : emptyContextObject,
    __DEV__ ? task.debugTask : null,
  );
}

// This is a non-destructive form of rendering a node. If it suspends it spawns
// a new task and restores the context of this task to what it was before.