fix: allow comments to contain --

packages/eslint-mdx/src/regexp.ts

@@ -23,7 +23,7 @@ export const openTag = '<[A-Za-z]*[A-Za-z0-9\\.\\-]*' + attribute + '*\\s*>'
 export const closeTag = '<\\s*\\/[A-Za-z]*[A-Za-z0-9\\.\\-]*\\s*>'
 export const selfClosingTag =
   '<[A-Za-z]*[A-Za-z0-9\\.\\-]*' + attribute + '*\\s*\\/?>'
-export const comment = '<!---->|<!--(?:-?[^>-])(?:-?[^-])*-->'
+export const comment = '<!--(?:[^-]|-(?:[^-]|-+[^->]))*-*-->'
 export const commentOpen = '(<!---*)'
 export const commentClose = '(-*-->)'
 export const commentContent = `${commentOpen}([\\s\\S]*?)${commentClose}`

test/__snapshots__/fixtures.test.ts.snap

@@ -169,6 +169,19 @@ Array [
 ]
 `;
 
+exports[`fixtures should match all snapshots: comments.mdx 1`] = `
+Array [
+  Object {
+    "column": 2,
+    "line": 1,
+    "message": "Unused eslint-disable directive (no problems were reported from 'no-console').",
+    "nodeType": null,
+    "ruleId": null,
+    "severity": 2,
+  },
+]
+`;
+
 exports[`fixtures should match all snapshots: details.mdx 1`] = `
 Array [
   Object {

test/fixtures.test.ts

@@ -35,6 +35,7 @@ const getCli = (lintCodeBlocks = false) =>
           ]
         : [],
     },
+    reportUnusedDisableDirectives: 'error',
   })
 
 describe('fixtures', () => {

test/fixtures/comments.mdx

@@ -0,0 +1 @@
+<!-- eslint-disable-next-line no-console -- Here's a description about why this configuration is necessary. -->