feat: add a markdown parser for challenges

curriculum/challenge-md-parser/tests-to-data.js

@@ -0,0 +1,23 @@
+const visit = require('unist-util-visit');
+const YAML = require('js-yaml');
+
+function plugin() {
+  return transformer;
+
+  function transformer(tree, file) {
+    visit(tree, 'code', visitor);
+
+    function visitor(node) {
+      const { lang, value } = node;
+      if (lang === 'yml') {
+        const tests = YAML.load(value);
+        file.data = {
+          ...file.data,
+          ...tests
+        };
+      }
+    }
+  }
+}
+
+module.exports = plugin;