tools: add unified plugin changing links for html docs

This commit introduces additional stage in the process of generating
html docs from markdown files. Plugin transforms links to *.md files
in the respository to links to *.html files in the online documentation.

Fixes: https://github.com/nodejs/node/issues/28689

PR-URL: https://github.com/nodejs/node/pull/29946
Reviewed-By: Anna Henningsen <anna@addaleax.net>

1 files changed, 3 insertions, 0 deletions

diff --git a/tools/doc/generate.js b/tools/doc/generate.js
index cd85d53657..aac8bfd5e7 100644
--- a/tools/doc/generate.js
+++ b/tools/doc/generate.js
@@ -29,6 +29,8 @@ const remark2rehype = require('remark-rehype');
 const raw = require('rehype-raw');
 const htmlStringify = require('rehype-stringify');
 
+const { replaceLinks } = require('./markdown');
+const linksMapper = require('./links-mapper');
 const html = require('./html');
 const json = require('./json');
 
@@ -70,6 +72,7 @@ async function main() {
   const input = await fs.readFile(filename, 'utf8');
 
   const content = await unified()
+    .use(replaceLinks, { filename, linksMapper })
     .use(markdown)
     .use(html.preprocessText)
     .use(json.jsonAPI, { filename })