Merge pull request #21574 from storybookjs/norbert/fix-21443-no-cachi…

…ng-in-decmode Bug: disable cache in dev-mode
storybookjs · Mar 15, 2023 · f229785 · f229785
2 parents b5c3281 + b784421
commit f229785
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diff --git a/code/lib/core-server/src/dev-server.ts b/code/lib/core-server/src/dev-server.ts
@@ -18,6 +18,7 @@ import { getStoryIndexGenerator } from './utils/getStoryIndexGenerator';
 import { doTelemetry } from './utils/doTelemetry';
 import { router } from './utils/router';
 import { getAccessControlMiddleware } from './utils/getAccessControlMiddleware';
+import { getCachingMiddleware } from './utils/get-caching-middleware';
 
 export async function storybookDevServer(options: Options) {
   const app = express();
@@ -48,6 +49,7 @@ export async function storybookDevServer(options: Options) {
   }
 
   app.use(getAccessControlMiddleware(core?.crossOriginIsolated));
+  app.use(getCachingMiddleware());
 
   getMiddleware(options.configDir)(router);
 

diff --git a/code/lib/core-server/src/utils/get-caching-middleware.ts b/code/lib/core-server/src/utils/get-caching-middleware.ts
@@ -0,0 +1,8 @@
+import type { RequestHandler } from 'express';
+
+export function getCachingMiddleware(): RequestHandler {
+  return (req, res, next) => {
+    res.header('Cache-Control', 'no-store');
+    next();
+  };
+}