Move the rewriteLocalLinks behavior to an AST pipeline plugin (#17550)

* Write our plugin

* Include it

* Move the RegEx

* Don't rewriteLocalLinks with cheerio anymore

* Process after HTML ast is generated

* Use the same logic as before, just to see if it'll pass

* Don't require languageCode/version

* Only work on local links

* Needs an href

* Only update href if there's a new one to use

* Check for node.properties

* Some links are just mean

lib/render-content/create-processor.js

@@ -10,8 +10,9 @@ const html = require('rehype-stringify')
 const graphql = require('highlightjs-graphql').definer
 const remarkCodeExtra = require('remark-code-extra')
 const codeHeader = require('./plugins/code-header')
+const rewriteLocalLinks = require('./plugins/rewrite-local-links')
 
-module.exports = function createProcessor () {
+module.exports = function createProcessor (context) {
   return unified()
     .use(markdown)
     .use(remarkCodeExtra, { transform: codeHeader })
@@ -21,5 +22,6 @@ module.exports = function createProcessor () {
     .use(autolinkHeadings, { behavior: 'wrap' })
     .use(highlight, { languages: { graphql }, subset: false })
     .use(raw)
+    .use(rewriteLocalLinks, { languageCode: context.currentLanguage, version: context.currentVersion })
     .use(html)
 }