feat$(abcjs): add extension preset

src/data/presets.js

@@ -23,6 +23,14 @@ const zero = {
     shortcuts: false,
   },
   /*
+  ABC Notation extension
+  Render abc-notation code blocks to music sheets
+  See https://abcjs.net/
+  */
+  abc: {
+    enabled: false,
+  },
+  /*
   Katex extension
   Render LaTeX mathematical expressions using:
     $...$ for inline formulas
@@ -45,12 +53,17 @@ const zero = {
 
 export default {
   zero: [zero],
-  commonmark: [zero, {
+  commonmark: [
+    zero,
+    {
       markdown: {
         fence: true,
       },
-  }],
+    },
-  gfm: [zero, {
+  ],
+  gfm: [
+    zero,
+    {
       markdown: {
         breaks: true,
         del: true,
@@ -62,8 +75,11 @@ export default {
       emoji: {
         enabled: true,
       },
-  }],
+    },
-  default: [zero, {
+  ],
+  default: [
+    zero,
+    {
       markdown: {
         abbr: true,
         breaks: true,
@@ -89,5 +105,9 @@ export default {
       mermaid: {
         enabled: true,
       },
-  }],
+      abc: {
+        enabled: true,
+      },
+    },
+  ],
 };