Update dependency react-markdown to v9

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
react-markdown	^8 -> ^9.0.0

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Release Notes

remarkjs/react-markdown (react-markdown)

v9.0.0

Compare Source

• b67d714
  Change to require Node.js 16
  migrate: update too
• ec2b134
  Change to require React 18
  migrate: update too
• bf5824f
  Change to use exports
  migrate: don’t use private APIs
• c383a45
  Update @types/hast, utilities, plugins, etc
  migrate: update too
• eca5e6b
08ead9e
  Replace transformImageUri, transformLinkUri w/ urlTransform
  migrate: see “Add urlTransform” below
• de29396
  Remove linkTarget option
  migrate: see “Remove linkTarget” below
• 4346276
  Remove support for passing custom props to components
  migrate: see “Remove includeElementIndex”, “Remove rawSourcePos”,
  “Remove sourcePos”, “Remove extra props passed to certain components”
  below
• c0dfbd6
  Remove UMD bundle from package
  migrate: use esm.sh or a CDN or so
• e12b5e9
  Remove prop-types
  migrate: use TypeScript
• 4eb7aa0
  Change to throw errors for removed props
  migrate: don’t pass options that don’t do things
• 8aabf74
  Change to improve error messages
  migrate: expect better messages

Add urlTransform

The transformImageUri and transformLinkUri were removed.
Having two functions is a bit much, particularly because there are more URLs
you might want to change (or which might be unsafe so we make them safe).
And their name and APIs were a bit weird.
You can use the new urlTransform prop instead to change all your URLs.

Remove linkTarget

The linkTarget option was removed; you should likely not set targets.
If you want to, use
rehype-external-links.

Remove includeElementIndex

The includeElementIndex option was removed, so index is never passed to
components.
Write a plugin to pass index:

Show example of plugin

import {visit} from 'unist-util-visit'

function rehypePluginAddingIndex() {
  /**
   * @​param {import('hast').Root} tree
   * @​returns {undefined}
   */
  return function (tree) {
    visit(tree, function (node, index) {
      if (node.type === 'element' && typeof index === 'number') {
        node.properties === index
      }
    })
  }
}

Remove rawSourcePos

The rawSourcePos option was removed, so sourcePos is never passed to
components.
All components are passed node, so you can get node.position from them.

Remove sourcePos

The sourcePos option was removed, so data-sourcepos is never passed to
elements.
Write a plugin to pass index:

Show example of plugin

import {stringifyPosition} from 'unist-util-stringify-position'
import {visit} from 'unist-util-visit'

function rehypePluginAddingIndex() {
  /**
   * @​param {import('hast').Root} tree
   * @​returns {undefined}
   */
  return function (tree) {
    visit(tree, function (node) {
      if (node.type === 'element') {
        node.properties.dataSourcepos = stringifyPosition(node.position)
      }
    })
  }
}

Remove extra props passed to certain components

When overwriting components, these props are no longer passed:

• inline on code
  — create a plugin or use pre for the block
• level on h1, h2, h3, h4, h5, h6
  — check node.tagName instead
• checked on li
  — check task-list-item class or check props.children
• index on li
  — create a plugin
• ordered on li
  — create a plugin or check the parent
• depth on ol, ul
  — create a plugin
• ordered on ol, ul
  — check node.tagName instead
• isHeader on td, th
  — check node.tagName instead
• isHeader on tr
  — create a plugin or check children

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Configuration

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