Merge pull request #16475 from storybookjs/tom/ch-661-addon-a11y-init…

…ializing-forever

Core: Ensure we don't reset `WebPreview` if calling `start()` in v7 mode

lib/core-client/src/preview/start.ts

@@ -11,7 +11,7 @@ import { Path } from '@storybook/store';
 import { Loadable } from './types';
 import { executeLoadableForChanges } from './executeLoadable';
 
-const { window: globalWindow } = global;
+const { window: globalWindow, FEATURES } = global;
 
 const configureDeprecationWarning = deprecate(
   () => {},
@@ -20,6 +20,10 @@ Please use the \`stories\` field of \`main.js\` to load stories.
 Read more at https://github.com/storybookjs/storybook/blob/next/MIGRATION.md#deprecated-configure`
 );
 
+const removedApi = (name: string) => () => {
+  throw new Error(`@storybook/client-api:${name} was removed in storyStoreV7.`);
+};
+
 export function start<TFramework extends AnyFramework>(
   renderToDOM: WebProjectAnnotations<TFramework>['renderToDOM'],
   {
@@ -30,6 +34,24 @@ export function start<TFramework extends AnyFramework>(
     render?: ArgsStoryFn<TFramework>;
   } = {}
 ) {
+  if (FEATURES?.storyStoreV7) {
+    return {
+      forceReRender: removedApi('forceReRender'),
+      getStorybook: removedApi('getStorybook'),
+      configure: removedApi('configure'),
+      clientApi: {
+        addDecorator: removedApi('clientApi.addDecorator'),
+        addParameters: removedApi('clientApi.addParameters'),
+        clearDecorators: removedApi('clientApi.clearDecorators'),
+        addLoader: removedApi('clientApi.addLoader'),
+        setAddon: removedApi('clientApi.setAddon'),
+        getStorybook: removedApi('clientApi.getStorybook'),
+        storiesOf: removedApi('clientApi.storiesOf'),
+        raw: removedApi('raw'),
+      },
+    };
+  }
+
   const channel = createChannel({ page: 'preview' });
   addons.setChannel(channel);