chore: dependency vendoring of markdownlint-rule-helpers

src/index.js

@@ -3,8 +3,8 @@
 const { pathToFileURL } = require("node:url")
 const fs = require("node:fs")
 
+const { filterTokens } = require("./markdownlint-rule-helpers/helpers.js")
 const {
-  filterTokens,
   convertHeadingToHTMLFragment,
   getMarkdownHeadings,
   getMarkdownIdOrAnchorNameFragments,

src/markdownlint-rule-helpers/helpers.js

@@ -0,0 +1,38 @@
+/**
+ * Dependency Vendoring of `markdownlint-rule-helpers`
+ * @see https://www.npmjs.com/package/markdownlint-rule-helpers
+ */
+
+/** @typedef {import('markdownlint').RuleParams} MarkdownLintRuleParams */
+/** @typedef {import('markdownlint').MarkdownItToken} MarkdownItToken */
+
+/**
+ * Calls the provided function for each matching token.
+ *
+ * @param {MarkdownLintRuleParams} params RuleParams instance.
+ * @param {string} type Token type identifier.
+ * @param {(token: MarkdownItToken) => void} handler Callback function.
+ * @returns {void}
+ */
+const filterTokens = (params, type, handler) => {
+  for (const token of params.tokens) {
+    if (token.type === type) {
+      handler(token)
+    }
+  }
+}
+
+/**
+ * Gets a Regular Expression for matching the specified HTML attribute.
+ *
+ * @param {string} name HTML attribute name.
+ * @returns {RegExp} Regular Expression for matching.
+ */
+const getHtmlAttributeRe = (name) => {
+  return new RegExp(`\\s${name}\\s*=\\s*['"]?([^'"\\s>]*)`, "iu")
+}
+
+module.exports = {
+  filterTokens,
+  getHtmlAttributeRe,
+}

src/utils.js

@@ -1,25 +1,6 @@
 const MarkdownIt = require("markdown-it")
-// @ts-ignore
-const { getHtmlAttributeRe } = require("markdownlint-rule-helpers")
 
-/** @typedef {import('markdownlint').RuleParams} MarkdownLintRuleParams */
-/** @typedef {import('markdownlint').MarkdownItToken} MarkdownItToken */
-
-/**
- * Calls the provided function for each matching token.
- *
- * @param {MarkdownLintRuleParams} params RuleParams instance.
- * @param {string} type Token type identifier.
- * @param {(token: MarkdownItToken) => void} handler Callback function.
- * @returns {void}
- */
-const filterTokens = (params, type, handler) => {
-  for (const token of params.tokens) {
-    if (token.type === type) {
-      handler(token)
-    }
-  }
-}
+const { getHtmlAttributeRe } = require("./markdownlint-rule-helpers/helpers.js")
 
 /**
  * Converts a Markdown heading into an HTML fragment according to the rules
@@ -114,12 +95,12 @@ const getMarkdownIdOrAnchorNameFragments = (content) => {
   for (const token of tokens) {
     const anchorMatch =
       anchorIdRe.exec(token.content) || anchorNameRe.exec(token.content)
-    if (!anchorMatch || anchorMatch.length === 0) {
+    if (anchorMatch == null) {
       continue
     }
 
     const anchorIdOrName = anchorMatch[1]
-    if (anchorIdOrName.length <= 0) {
+    if (anchorIdOrName == null || anchorIdOrName.length <= 0) {
       continue
     }
 
@@ -133,7 +114,6 @@ const getMarkdownIdOrAnchorNameFragments = (content) => {
 }
 
 module.exports = {
-  filterTokens,
   convertHeadingToHTMLFragment,
   getMarkdownHeadings,
   getMarkdownIdOrAnchorNameFragments,