From 5c833834b2646b7a615de766a830f23524e4f1a6 Mon Sep 17 00:00:00 2001
From: Tom Coleman <tom@thesnail.org>
Date: Fri, 10 Sep 2021 18:31:28 +1000
Subject: [PATCH] Add warning if find old `stories.json`

https://github.com/storybookjs/storybook/pull/16004/files/b05020ce5c1ca9f12cc5c0f7bd4e2aa8d20d7102#r705834795
---
 lib/api/src/modules/stories.ts | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/lib/api/src/modules/stories.ts b/lib/api/src/modules/stories.ts
index 33ad5c1675c..78224e84013 100644
--- a/lib/api/src/modules/stories.ts
+++ b/lib/api/src/modules/stories.ts
@@ -11,6 +11,7 @@ import {
   STORY_SPECIFIED,
 } from '@storybook/core-events';
 import deprecate from 'util-deprecate';
+import { logger } from '@storybook/client-logger';
 
 import { getEventMetadata } from '../lib/events';
 import {
@@ -355,6 +356,7 @@ export const init: ModuleFn = ({
 
       // We can only do this if the stories.json is a proper storyIndex
       if (storyIndex.v !== 3) {
+        logger.warn(`Skipping story index with version v${storyIndex.v}, awaiting SET_STORIES.`);
         return;
       }