Add Wiki.js markdown export option

exporters/wikijs.js

@@ -0,0 +1,26 @@
+'use strict';
+
+const { DEFAULT_TEMPLATE, renderMarkdownGuide } = require('./markdown-guide');
+
+/**
+ * Wiki.js markdown exporter. Same step/body structure as the generic
+ * Markdown exporter, but omits the manual Contents section by default and
+ * emits Wiki.js-friendly callout blocks.
+ */
+
+const WIKIJS_TEMPLATE = {
+  toc: false,
+  includeImages: true,
+  imageMaxWidth: 0,
+};
+
+function exportWikiJs(ast, outDir, template = {}) {
+  return renderMarkdownGuide(ast, outDir, template, {
+    defaults: WIKIJS_TEMPLATE,
+    alertStyle: 'wikijs',
+    tocTitle: 'Contents',
+    fileExt: '.md',
+  });
+}
+
+module.exports = { exportWikiJs, DEFAULT_TEMPLATE: WIKIJS_TEMPLATE };