Merge pull request #26516 from storybookjs/kasper/allow-empty-compone…

…nt-title

Bug: Remove redundant component check, as we auto-generate titles from the file system
(cherry picked from commit b389754)

code/lib/csf-tools/src/CsfFile.test.ts

@@ -619,15 +619,23 @@ describe('CsfFile', () => {
     });
 
     it('no metadata', () => {
-      expect(() =>
+      expect(
         parse(
           dedent`
           export default { foo: '5' };
           export const A = () => {};
           export const B = () => {};
       `
         )
-      ).toThrow('CSF: missing title/component');
+      ).toMatchInlineSnapshot(`
+        meta:
+          title: Default Title
+        stories:
+          - id: default-title--a
+            name: A
+          - id: default-title--b
+            name: B
+      `);
     });
 
     it('dynamic titles', () => {

code/lib/csf-tools/src/CsfFile.ts

@@ -478,14 +478,6 @@ export class CsfFile {
       throw new NoMetaError('missing default export', self._ast, self._fileName);
     }
 
-    if (!self._meta.title && !self._meta.component) {
-      throw new Error(dedent`
-        CSF: missing title/component ${formatLocation(self._ast, self._fileName)}
-
-        More info: https://storybook.js.org/docs/react/writing-stories#default-export
-      `);
-    }
-
     // default export can come at any point in the file, so we do this post processing last
     const entries = Object.entries(self._stories);
     self._meta.title = this._makeTitle(self._meta?.title as string);