feat: @plain

README.md

@@ -112,8 +112,23 @@ flowchart
 ```
 ````
 
+### @plain
+
+````markdown
+Turn
+
+```markdown @plain
+anything
+```
+
+Into
+
+anything
+````
+
 ## Related
 
 - [markdown-code-block-meta](https://github.com/nice-move/markdown-code-block-meta)
+- [rehype-extended-table](https://github.com/nice-move/rehype-extended-table)
 - [remark-docusaurus](https://github.com/nice-move/remark-docusaurus)
 - [remark-kroki](https://github.com/nice-move/remark-kroki)

index.mjs

@@ -101,5 +101,23 @@ export function remarkCodeExample({ metas = {} } = {}) {
 
       node.meta = stringify(new Map([...extra, ...newMeta]));
     });
+
+    visitCode(tree, '@plain', ({ node, lang }) => {
+      if (lang === 'markdown') {
+        node.type = 'paragraph';
+
+        node.children = [
+          {
+            type: 'text',
+            value: node.value,
+          },
+        ];
+
+        delete node.lang;
+        delete node.meta;
+        delete node.value;
+        delete node.position;
+      }
+    });
   };
 }

package.json

@@ -50,6 +50,7 @@
     "ava": "^5.3.1",
     "eslint": "^8.52.0",
     "eslint-plugin-ava": "^14.0.0",
+    "fs-chain": "^8.2.3",
     "garou": "^0.6.17",
     "prettier": "^3.0.3",
     "remark": "^15.0.1"

test/fixture/math.md

@@ -0,0 +1,5 @@
+```markdown @plain
+$$
+I = \int_0^{2\pi} \sin(x) dx
+$$
+```

test/snapshots/to-plain.mjs.md

@@ -0,0 +1,23 @@
+# Snapshot report for `test/to-plain.mjs`
+
+The actual snapshot is saved in `to-plain.mjs.snap`.
+
+Generated by [AVA](https://avajs.dev).
+
+## @plain
+
+> Snapshot 1
+
+    `\`\`\`markdown @plain␊
+    $$␊
+    I = \\int_0^{2\\pi} \\sin(x) dx␊
+    $$␊
+    \`\`\`␊
+    `
+
+> Snapshot 2
+
+    `$$␊
+    I = \\int\\_0^{2\\pi} \\sin(x) dx␊
+    $$␊
+    `

test/to-plain.mjs

@@ -0,0 +1,17 @@
+import test from 'ava';
+import { Text } from 'fs-chain';
+
+import { transform } from './helper/lib.mjs';
+
+function Read(path) {
+  return new Text(import.meta.url).source(path);
+}
+
+test('@plain', async (t) => {
+  const input = await Read('../fixture/math.md');
+
+  const output = await transform(input);
+
+  t.snapshot(input);
+  t.snapshot(output);
+});