gatsby-plugin-mdx: MDXRender accepts components - but no functionality

[ohlr]

Description

https://www.gatsbyjs.org/packages/gatsby-plugin-mdx/#mdxprovider
accepts components to allow modification

MDXRerender also accepts components but it does not do anything with them.

Steps to reproduce

    <MDXRenderer
      components={{
        a: MdxLink,
      }}
    >
      {mdx.code.body}
    </MDXRenderer>

This neither changes the a tag to MdxLink nor throws an error.
This should not be the case at least in typescript

Expected result

What should happen?
Either remove the components property or add the the functionality of MDXProvider to MDXRenderer.

Environment

System:
OS: Linux 5.3 Ubuntu 18.04.4 LTS (Bionic Beaver)
CPU: (8) x64 Intel(R) Core(TM) i7-7700HQ CPU @ 2.80GHz
Shell: 4.4.20 - /bin/bash
Binaries:
Node: 10.19.0 - /usr/bin/node
Yarn: 1.21.1 - ~/.yarn/bin/yarn
npm: 6.13.4 - /usr/bin/npm
Languages:
Python: 3.7.3 - /home/user/anaconda3/bin/python
Browsers:
Chrome: 80.0.3987.106
Firefox: 73.0
npmPackages:
gatsby: ^2.15.24 => 2.15.24
gatsby-plugin-layout: ^1.1.22 => 1.1.22
gatsby-plugin-mdx: ^1.0.73 => 1.0.73
gatsby-plugin-react-helmet: ^3.1.8 => 3.1.8
gatsby-plugin-typescript: ^2.1.9 => 2.1.9
gatsby-source-filesystem: ^2.1.46 => 2.1.46
gatsby-transformer-json: ^2.2.26 => 2.2.26
npmGlobalPackages:
gatsby-cli: 2.8.27

[johno]

Thanks for opening this issue! We should remove the components prop from MDXRenderer because it's not actually being used and that functionality can be achieved using the MDXProvider.

We won't need to make it a breaking change to remove the prop because it was never being passed on properly in the first place.

[LekoArts]

@johno @gatsbyjs/learning This will also need some documentation work.

[Arthur092]

Hi guys, so are we removing the component property from documentation?
I am a new contributor, I'd like to do it if you don't mind :)
Let me know so I can create the PR

[floAr]

I took it up as the issue was getting rather quiet. Quick question: Would it also be preferred to directly convert to typescript?