fix

book/node_modules/honkit/lib/modifiers/summary/indexArticleLevels.js

@@ -0,0 +1,21 @@
+"use strict";
+/**
+ Index levels in an article tree
+
+ @param {Article}
+ @param {string} baseLevel
+ @return {Article}
+ */
+Object.defineProperty(exports, "__esModule", { value: true });
+function indexArticleLevels(article, baseLevel) {
+    baseLevel = baseLevel || article.getLevel();
+    let articles = article.getArticles();
+    articles = articles.map((inner, i) => {
+        return indexArticleLevels(inner, `${baseLevel}.${i + 1}`);
+    });
+    return article.merge({
+        level: baseLevel,
+        articles: articles
+    });
+}
+exports.default = indexArticleLevels;