Permalinks missing?

Question

Even though it's possible to request tableOfContent in allMdx and it's properly generated, permalinks seem to be missing on all headline elements.

This could be related to my custom MDXProvider with custom components. Anything special I need to write there? Here is my current state

import { MDXProvider } from '-js/react'
import React from 'react'
import { H1, H2, H3, PM} from '/style/mdxStyle'
import styled, { css } from 'styled-components'

export default ({ children }) => (
  <mdxprovider components="{{" map html element tag to react component h1: h1 h2: h2 h3: h3 p: pm li: styled.li> props.theme.typography.paragraph.M}
      `
    }}
  >
    {children}
  </mdxprovider>
)

该提问来源于开源项目：ChristopherBiscardi/gatsby-mdx

Answer 1

I check props for the component and there are only children

FYI, for regular .md in Gatsby, every headline also generates a small anchor inside with the '#link' for permalink support and those links are then later used in table of contents