From a64b38efad521b48dba6aca8209748e509cebe6f Mon Sep 17 00:00:00 2001
From: Benjamin Canac <canacb1@gmail.com>
Date: Mon, 25 May 2020 18:08:01 +0200
Subject: [PATCH] feat: support remark plugins

---
 lib/index.js                  | 12 ++++++++++++
 lib/parsers/markdown/index.js | 28 ++++++++++++++++------------
 2 files changed, 28 insertions(+), 12 deletions(-)

diff --git a/lib/index.js b/lib/index.js
index b7f1a6b20..ca2d522b0 100644
--- a/lib/index.js
+++ b/lib/index.js
@@ -13,6 +13,18 @@ const defaults = {
   dir: 'content',
   fullTextSearchFields: ['title', 'description', 'slug', 'text'],
   markdown: {
+    basePlugins: [
+      'remark-squeeze-paragraphs',
+      'remark-slug',
+      'remark-autolink-headings',
+      'remark-external-links',
+      'remark-footnotes'
+    ],
+    plugins: [
+    ],
+    footnotes: {
+      inlineNotes: true
+    },
     externalLinks: {},
     prism: {
       theme: 'prismjs/themes/prism.css'
diff --git a/lib/parsers/markdown/index.js b/lib/parsers/markdown/index.js
index cc3f8f238..22784addb 100644
--- a/lib/parsers/markdown/index.js
+++ b/lib/parsers/markdown/index.js
@@ -1,16 +1,13 @@
 const matter = require('gray-matter')
+const { camelCase } = require('change-case')
 const unified = require('unified')
 const parse = require('remark-parse')
-const squeezeParagraphs = require('remark-squeeze-paragraphs')
-const slug = require('remark-slug')
-const headings = require('remark-autolink-headings')
-const externalLinks = require('remark-external-links')
-const footnotes = require('remark-footnotes')
 const remark2rehype = require('remark-rehype')
 const minifyWhiteSpace = require('rehype-minify-whitespace')
 const sortValues = require('rehype-sort-attribute-values')
 const sortAttrs = require('rehype-sort-attributes')
 const raw = require('rehype-raw')
+const logger = require('consola').withScope('@nuxt/content')
 
 const handlers = require('./handlers')
 const jsonCompiler = require('./compilers/json')
@@ -18,6 +15,7 @@ const jsonCompiler = require('./compilers/json')
 class Markdown {
   constructor (options = {}) {
     this.options = options
+    this.plugins = [...options.basePlugins, ...options.plugins]
   }
 
   /**
@@ -64,13 +62,19 @@ class Markdown {
    */
   generateBody (content) {
     return new Promise((resolve, reject) => {
-      unified()
-        .use(parse)
-        .use(slug)
-        .use(headings)
-        .use(squeezeParagraphs)
-        .use(externalLinks, this.options.externalLinks)
-        .use(footnotes, { inlineNotes: true })
+      let stream = unified().use(parse)
+
+      for (const name of this.plugins) {
+        try {
+          const plugin = require(name)
+          const options = this.options[camelCase(name.replace('remark-', ''))]
+          stream = stream.use(plugin, options)
+        } catch (e) {
+          logger.warn(`${name} is not installed`)
+        }
+      }
+
+      stream
         .use(remark2rehype, { handlers, allowDangerousHtml: true })
         .use(raw)
         .use(minifyWhiteSpace)