fix: Fix the property setting of the code.

__tests__/index.test.ts

@@ -9,12 +9,41 @@ const remarkParse = require('remark-parse')
 const gfm = require('remark-gfm')
 const rehypeAttrs = require('../lib')
 const utils = require('../lib/utils')
+const visit = require('../lib/visit')
 
 const mrkStr = "<!--rehype:title=Rehype Attrs-->\n```js\nconsole.log('')\n```"
 
 describe('rehype-attr function test case', () => {
-  it('getURLParameters', async () => {
-    expect(utils.getURLParameters('title=1&b=2')).toEqual({ title: "1", b: "2" });
+  it('visit', async () => {
+    const node = {
+      "type": "root",
+      "children": [
+        {
+          "type": "element",
+          "tagName": "p",
+          "properties": {},
+          "children": [
+            { "type": "text", "value": "This is a " },
+            { "type": "element", "tagName": "del", "properties": {}, "children": [ { "type": "text", "value": "title" } ] },
+            { "type": "comment", "value": "rehype:style=color:pink;" }
+          ]
+        }
+      ],
+      "data": { "quirksMode": false }
+    }
+    visit(node, 'element', (node, index, parent) => {
+      expect(/(del|p)/.test(node.tagName)).toBeTruthy()
+      expect(typeof node).toEqual('object')
+      expect(typeof index).toEqual('number')
+      expect(typeof parent).toEqual('object')
+    })
+    expect(visit(node)).toBeUndefined()
+    expect(visit(node, 'element')).toBeUndefined()
+    expect(visit(node, 'element', () => {})).toBeUndefined()
+    expect(visit()).toBeUndefined()
+    expect(visit(undefined)).toBeUndefined()
+    expect(visit(undefined, undefined)).toBeUndefined()
+    expect(visit(undefined, undefined, undefined)).toBeUndefined()
   });
   it('getCommentObject', async () => {
     expect(utils.getCommentObject({})).toEqual({ });
@@ -165,6 +194,11 @@ describe('rehype-attr test case', () => {
       markdown: '<!--rehype:title=Rehype Attrs-->\n```js\nconsole.log("")\n```',
       expected: '<!--rehype:title=Rehype Attrs-->\n<pre data-type="rehyp"><code class="language-js" title="Rehype Attrs">console.log("")\n</code></pre>',
     },
+    {
+      title: 'options="attr" - Code',
+      markdown: '```js\nconsole.log("")\n```\n<!--rehype:title=Rehype Attrs-->',
+      expected: '<pre title="Rehype Attrs"><code class="language-js">console.log("")\n</code></pre>\n<!--rehype:title=Rehype Attrs-->',
+    },
     {
       title: 'options="attr" - Emphasis <em>',
       markdown: 'Npm stand for *node*<!--rehype:style=color: red--> packet manager.',

src/index.ts

@@ -66,7 +66,8 @@ const rehypeAttrs: Plugin<[RehypeAttrsOptions?]> = (options): MdastTransformer =
             codeNode.properties = propertiesHandle(codeNode.properties, attr, opts.properties)
           }
         }
-      } else if (/^(em|strong|b|a|i|p|blockquote|h(1|2|3|4|5|6)|code|img|del|ul|ol)$/.test(node.tagName as string)) {
+      }
+      if (/^(em|strong|b|a|i|p|pre|blockquote|h(1|2|3|4|5|6)|code|img|del|ul|ol)$/.test(node.tagName as string)) {
         const child = nextChild(parent.children, index)
         if (child) {
           const attr = getCommentObject(child)

src/utils.ts

@@ -19,12 +19,13 @@ export const prevChild = (data: Content[] = [], index: number): CommentData | un
   let i = index;
   while (i > -1) {
     i--;
-    if ((data[i].value && (data[i].value as string).replace(/(\n|\s)/g, '') !== '') || data[i].type !== 'text') {
+    if (!data[i]) return
+    if ((data[i] && data[i].value && ((data[i].value || '') as string).replace(/(\n|\s)/g, '') !== '') || data[i].type !== 'text') {
       if (!/rehype:/.test(data[i].value as string) && (data[i].type as string) !== 'comment') return;
       return data[i] as unknown as CommentData;
     }
   }
-  return {} as CommentData;
+  return;
 }
 
 export const nextChild = (data: Content[] = [], index: number, tagName?: string): CommentData | undefined => {