refactor: simplify logic understanding

README.md

@@ -66,7 +66,7 @@ Contributions are welcome to improve the rule, and to alleviate these limitation
 
 ## Prerequisites
 
-- [Node.js](https://nodejs.org/) >= 16.0.0
+[Node.js](https://nodejs.org/) >= 16.0.0
 
 ## Installation
 
@@ -88,7 +88,7 @@ We recommend configuring [markdownlint-cli2](https://github.com/DavidAnson/markd
     "default": true,
     "relative-links": true
   },
-  "globs": ["**/*.{md,mdx}"],
+  "globs": ["**/*.md"],
   "ignores": ["**/node_modules"],
   "customRules": ["markdownlint-rule-relative-links"]
 }

src/index.js

@@ -72,7 +72,7 @@ const customRule = {
 
         if (url.hash.length <= 0) {
           if (hrefSrc.includes("#")) {
-            if (type !== "link_open") {
+            if (type === "image") {
               onError({
                 lineNumber,
                 detail: `${detail} should not have a fragment identifier as it is an image`,
@@ -89,7 +89,7 @@ const customRule = {
           continue
         }
 
-        if (type !== "link_open") {
+        if (type === "image") {
           onError({
             lineNumber,
             detail: `${detail} should not have a fragment identifier as it is an image`,

src/utils.js

@@ -2,6 +2,8 @@ const MarkdownIt = require("markdown-it")
 
 const { getHtmlAttributeRe } = require("./markdownlint-rule-helpers/helpers.js")
 
+const markdownIt = new MarkdownIt({ html: true })
+
 /**
  * Converts a Markdown heading into an HTML fragment according to the rules
  * used by GitHub.
@@ -37,7 +39,6 @@ const ignoredTokens = new Set(["heading_open", "heading_close"])
  * @returns {string[]}
  */
 const getMarkdownHeadings = (content) => {
-  const markdownIt = new MarkdownIt({ html: true })
   const tokens = markdownIt.parse(content, {})
 
   /** @type {string[]} */
@@ -86,7 +87,6 @@ const idHTMLAttributeRegex = getHtmlAttributeRe("id")
  * @returns {string[]}
  */
 const getMarkdownIdOrAnchorNameFragments = (content) => {
-  const markdownIt = new MarkdownIt({ html: true })
   const tokens = markdownIt.parse(content, {})
 
   /** @type {string[]} */