✨ feat: add github-alerts support (#1370)

package.json

@@ -629,7 +629,10 @@
         "markdown.markdownItPlugins": true,
         "markdown.previewStyles": [
             "./media/checkbox.css",
-            "./node_modules/katex/dist/katex.min.css"
+            "./node_modules/katex/dist/katex.min.css",
+            "./node_modules/markdown-it-github-alerts/styles/github-colors-light.css",
+            "./node_modules/markdown-it-github-alerts/styles/github-colors-dark-media.css",
+            "./node_modules/markdown-it-github-alerts/styles/github-base.css"
         ],
         "grammars": [
             {
@@ -673,14 +676,15 @@
         "highlight.js": "^11.5.1",
         "image-size": "^0.9.3",
         "katex": "^0.16.4",
-        "markdown-it": "^12.3.2",
+        "markdown-it": "^13.0.2",
+        "markdown-it-github-alerts": "^0.1.2",
         "markdown-it-task-lists": "^2.1.1",
         "string-similarity": "^4.0.4"
     },
     "devDependencies": {
         "@types/glob": "^7.2.0",
         "@types/katex": "^0.14.0",
-        "@types/markdown-it": "^12.2.3",
+        "@types/markdown-it": "^13.0.7",
         "@types/mocha": "^9.1.0",
         "@types/node": "~14.18.13",
         "@types/string-similarity": "^4.0.0",

src/markdown-it-plugin-provider.ts

@@ -9,6 +9,7 @@ const katexOptions: KatexOptions = { throwOnError: false };
  */
 export function extendMarkdownIt(md: MarkdownIt): MarkdownIt {
     md.use(require("markdown-it-task-lists"), {enabled: true});
+    md.use(require("markdown-it-github-alerts"))
 
     if (configManager.get("math.enabled")) {
         // We need side effects. (#521)