➕ use slug package to make anchor more idiom and emoji compatible

Signed-off-by: Vinicius Reis <vinicius.reis@nextcloud.com>

package.json

@@ -100,6 +100,7 @@
     "prosemirror-utils": "^1.0.0-0",
     "prosemirror-view": "^1.28.0",
     "proxy-polyfill": "^0.3.2",
+    "slug": "^8.0.0",
     "tippy.js": "^6.3.7",
     "uuid": "^9.0.0",
     "vue": "^2.7.10",
@@ -145,7 +146,7 @@
     ],
     "moduleNameMapper": {
       "^@/(.*)$": "<rootDir>/src/$1",
-	  "\\.(css)$": "identity-obj-proxy"
+      "\\.(css)$": "identity-obj-proxy"
     },
     "testPathIgnorePatterns": [
       "<rootDir>/src/tests/fixtures/",
@@ -163,8 +164,6 @@
     "setupFilesAfterEnv": [
       "<rootDir>/src/tests/setup.js"
     ],
-    "transformIgnorePatterns": [
-
-    ]
+    "transformIgnorePatterns": []
   }
 }

src/nodes/Heading/slug.js

@@ -1,10 +1 @@
-const regexSpaces = /\s+/g
-const regexInvalidCaracters = /[^\p{Letter}\p{Mark}\w\s-]/gu
-
-const slugify = (str) => String(str)
-	.toLowerCase()
-	.replace(regexInvalidCaracters, '')
-	.trim()
-	.replace(regexSpaces, '-')
-
-export { slugify }
+export { default as slugify } from 'slug'