plugin-docusaurus-v3 does not work when Docusaurus in blog only mode

[nikolaymatrosov]

Describe the bug

Plugin crashes when Docusaurus in blog only mode.

To Reproduce

1. install Docusaurus

npx create-docusaurus@latest orama-docusaurus classic --typescript

2. add Orama plugin

npm i --save @orama/plugin-docusaurus-v3

3. Delete the existing homepage at ./src/pages/index.js
4. Modify docusaurus.config.ts to switch to blog only mode and enable the plugin

@@ -33,14 +33,9 @@
         [
             'classic',
             {
-                docs: {
-                    sidebarPath: './sidebars.ts',
-                    // Please change this to your repo.
-                    // Remove this to remove the "edit this page" links.
-                    editUrl:
-                        'https://github.com/facebook/docusaurus/tree/main/packages/create-docusaurus/templates/shared/',
-                },
+                docs: false,
                 blog: {
+                    routeBasePath: '/',
                     showReadingTime: true,
                     // Please change this to your repo.
                     // Remove this to remove the "edit this page" links.
@@ -53,6 +48,9 @@
             } satisfies Preset.Options,
         ],
     ],
+    plugins: [
+        "@orama/plugin-docusaurus-v3",
+    ],
     themeConfig: {
         // Replace with your project's social card
         image: 'img/docusaurus-social-card.jpg',
@@ -63,62 +61,11 @@
                 src: 'img/logo.svg',
             },
             items: [
-                {
-                    type: 'docSidebar',
-                    sidebarId: 'tutorialSidebar',
-                    position: 'left',
-                    label: 'Tutorial',
-                },
-                { to: '/blog', label: 'Blog', position: 'left' },
-                {
-                    href: 'https://github.com/facebook/docusaurus',
-                    label: 'GitHub',
-                    position: 'right',
-                },
             ],
         },
         footer: {
             style: 'dark',
             links: [
-                {
-                    title: 'Docs',
-                    items: [
-                        {
-                            label: 'Tutorial',
-                            to: '/docs/intro',
-                        },
-                    ],
-                },
-                {
-                    title: 'Community',
-                    items: [
-                        {
-                            label: 'Stack Overflow',
-                            href: 'https://stackoverflow.com/questions/tagged/docusaurus',
-                        },
-                        {
-                            label: 'Discord',
-                            href: 'https://discordapp.com/invite/docusaurus',
-                        },
-                        {
-                            label: 'Twitter',
-                            href: 'https://twitter.com/docusaurus',
-                        },
-                    ],
-                },
-                {
-                    title: 'More',
-                    items: [
-                        {
-                            label: 'Blog',
-                            to: '/blog',
-                        },
-                        {
-                            label: 'GitHub',
-                            href: 'https://github.com/facebook/docusaurus',
-                        },
-                    ],
-                },
             ],
             copyright: `Copyright © ${new Date().getFullYear()} My Project, Inc. Built with Docusaurus.`,
         },

And you will get this error:

~/.nvm/versions/node/v20.10.0/bin/npm run start

> orama-docusaurus@0.0.0 start
> docusaurus start

[INFO] Starting the development server...

TypeError: Cannot read properties of undefined (reading 'map')
    at Object.contentLoaded (~/Documents/experiment/orama-docusaurus/node_modules/@orama/plugin-docusaurus-v3/lib/index.js:34:39)
    at ~/Documents/experiment/orama-docusaurus/node_modules/@docusaurus/core/lib/server/plugins/index.js:99:22
    at async Promise.all (index 4)
    at async loadPlugins (~/Documents/experiment/orama-docusaurus/node_modules/@docusaurus/core/lib/server/plugins/index.js:63:5)
    at async load (~/Documents/experiment/orama-docusaurus/node_modules/@docusaurus/core/lib/server/index.js:76:58)
    at async Command.start (~/Documents/experiment/orama-docusaurus/node_modules/@docusaurus/core/lib/commands/start.js:44:19)

[INFO] Docusaurus version: 3.1.1
Node version: v20.10.0

Process finished with exit code 1

Full repo here https://github.com/nikolaymatrosov/orama-docusaurus

Expected behavior

I expect I can search in my blog posts

Environment Info

Node: 20.10
Docusaurus: 3.1.1
Orama: 2.0.8

Affected areas

Initialization, Search

Additional context

No response

[micheleriva]

@nikolaymatrosov thank you so much for catching this. We'll definitely fix it

[SaraVieira]

Hey!

Thank you so much for the detailed way to get this issue! Made it super easy to reproduce, I fixed it today and it will be in the next version