Fix support for explicit nullish processor

Closes GH-21.
remarkjs · Oct 3, 2021 · b718673 · b718673
1 parent 2e2401a
commit b718673
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Showing 2 changed files with 13 additions and 2 deletions.
diff --git a/index.js b/index.js
@@ -26,12 +26,12 @@ import {toHast} from 'mdast-util-to-hast'
  *   Options passed to `mdast-util-to-hast`.
  */
 const remarkRehype =
-  /** @type {(import('unified').Plugin<[Processor, Options?]|[Options]|[], MdastRoot>)} */
+  /** @type {(import('unified').Plugin<[Processor, Options?]|[null|undefined, Options?]|[Options]|[], MdastRoot>)} */
   (
     function (destination, options) {
       return destination && 'run' in destination
         ? bridge(destination, options)
-        : mutate(destination)
+        : mutate(destination || options)
     }
   )
 

diff --git a/test.js b/test.js
@@ -28,6 +28,17 @@ test('remarkRehype', (t) => {
     'should mutate with options'
   )
 
+  t.equal(
+    unified()
+      .use(remarkParse)
+      .use(remarkRehype, null, {allowDangerousHtml: true})
+      .use(rehypeStringify, {allowDangerousHtml: true})
+      .processSync('## Hello, <i>world</i>! ##')
+      .toString(),
+    '<h2>Hello, <i>world</i>!</h2>',
+    'should mutate with `processor: null` and options'
+  )
+
   t.equal(
     unified()
       .use(remarkParse)