Unable to avoid prepending of the baseUrl in NavBar items

[jbltx]

Have you read the Contributing Guidelines on issues?

• I have read the Contributing Guidelines on issues.

Prerequisites

• I'm using the latest version of Docusaurus.
• I have tried the npm run clear or yarn clear command.
• I have tried rm -rf node_modules yarn.lock package-lock.json and re-installing packages.
• I have tried creating a repro with https://new.docusaurus.io.
• I have read the console error message carefully (if applicable).

Description

Using the prependBaseUrlToHref property on NavBar items or pathname:/// inside href property directly doesn't prevent the prepending of the project's baseUrl value in the final link.

Reproducible demo

https://stackblitz.com/edit/github-tvsjbv?file=docusaurus.config.js

Steps to reproduce

1. Set a baseUrl in the docusaurus config file other than / (example : /base/)
2. Set the docusaurus project as Docs-only (docs.routeBasePath : /, intro.md slug: /, remove src/pages folder)
3. Add NavBar links that should point to other place in the same domain. Example:

   {
     href: '/toto', // or 'pathname:///toto'
     prependBaseUrlToHref: false,
     label: 'Toto',
     position: 'left'
   }

4. In the broswer go <yourdomain>/base to get the docs intro page.
5. Check the final href value of links inside the NavBar.

Expected behavior

The navbar item links shouldn't have the baseUrl prepended on the href

https://your-docusaurus-test-site.com/toto

Actual behavior

The navbar item links do have the baseUrl prepended on the href

https://your-docusaurus-test-site.com/base/toto

Your environment

• Public source code: https://stackblitz.com/edit/github-tvsjbv?file=docusaurus.config.js
• Public site URL: https://stackblitz.com/edit/github-tvsjbv?file=docusaurus.config.js
• Docusaurus version used: 2.0.1
• Environment name and version (e.g. Chrome 89, Node.js 16.4): Chrome 104
• Operating system and version (e.g. Ubuntu 20.04.2 LTS): Mac OSX 12.1

Self-service

• I'd be willing to fix this bug myself.

[slorber]

The default sidebar item link is legacy and quite messy. I'd like to refactor it and make things clearer but it's not easy without changing the behavior and doing breaking changes.

In the meantime, I think you should be able to achieve what you want with autoAddBaseUrl: false.

Related to #7949

I guess we can keep this issue open, and probably remove prependBaseUrlToHref in favor of autoAddBaseUrl

[jbltx]

autoAddBaseUrl seems to do the trick yes, thank you!

I don't think the property autoAddBaseUrl is documented :
https://docusaurus.io/docs/api/themes/configuration#navbar-link

[slorber]

No it's not documented. All things regarding linking are a bit messy, a mix of new features and legacy things I'd like to get rid of. We'll document everything once the cleanup/breaking changes are done

[CMCDragonkai]

Finally found this. I was wondering why it didn't work. BTW, what's the point of using pathname://? I can see that href: '/' with autoAddBaseUrl: false working now.

[CMCDragonkai]

The autoAddBaseUrl doesn't appear to work for navbar.logo atm.