Function unblockSuspenseListRow

packages/react-server/src/ReactFizzServer.js:1802–1840

(
  request: Request,
  unblockedRow: null | SuspenseListRow,
  inheritedHoistables: null | HoistableState,
)

}

function unblockSuspenseListRow(
  request: Request,
  unblockedRow: null | SuspenseListRow,
  inheritedHoistables: null | HoistableState,
): void {
  // We do this in a loop to avoid stack overflow for very long lists that get unblocked.
  while (unblockedRow !== null) {
    if (inheritedHoistables !== null) {
      // Hoist any hoistables from the previous row into the next row so that it can be
      // later transferred to all the rows.
      hoistHoistables(unblockedRow.hoistables, inheritedHoistables);
      // Mark the row itself for any newly discovered Suspense boundaries to inherit.
      // This is different from hoistables because that also includes hoistables from
      // all the boundaries below this row and not just previous rows.
      unblockedRow.inheritedHoistables = inheritedHoistables;
    }
    // Unblocking the boundaries will decrement the count of this row but we keep it above
    // zero so they never finish this row recursively.
    const unblockedBoundaries = unblockedRow.boundaries;
    if (unblockedBoundaries !== null) {
      unblockedRow.boundaries = null;
      for (let i = 0; i < unblockedBoundaries.length; i++) {
        const unblockedBoundary = unblockedBoundaries[i];
        if (inheritedHoistables !== null) {
          hoistHoistables(unblockedBoundary.contentState, inheritedHoistables);
        }
        finishedTask(request, unblockedBoundary, null, null);
      }
    }
    // Instead we decrement at the end to keep it all in this loop.
    unblockedRow.pendingTasks--;
    if (unblockedRow.pendingTasks > 0) {
      // Still blocked.
      break;
    }
    inheritedHoistables = unblockedRow.hoistables;
    unblockedRow = unblockedRow.next;
  }
}

function trackPostponedSuspenseListRow(
  request: Request,