配置toc输出

 "use strict";
 const fs = require('fs');
 
+/**
+ * 渲染md文件，输出html
+ * @param opts 选项
+ * @return {MarkdownIt}
+ * @constructor
+ *
+ * opts:
+ * toc: true/false 是否显示[TOC]
+ * parseTokens: true/false 是否同时解析md输出结果tokens
+ */
 function MarkdownIt (opts) {
     if (!(this instanceof MarkdownIt)) {
         return new MarkdownIt(opts);
     }
 
     opts = opts || {};
-    let plugin = require('markdown-it-github-toc').default;
-
-    const md = require('markdown-it')(opts.options)
-        .use(plugin, {
-            anchorLinkSymbol: '¶'
-        });
 
+    const md = require('markdown-it')(opts.options);
+    if (opts.toc) {
+        md.use(require('markdown-it-github-toc').default, {
+            anchorLinkSymbol: ''
+        })
+    }
     this.renderFile = function (filename) {
         if (!filename) {
             throw new Error('filename can not be null!')

@@ -3,7 +3,7 @@ const app = express();
 
 const config = require('./init/config');
 
-const mdview = new (require('./lib/mdview'))({parseTokens: true}),
+const mdview = new (require('./lib/mdview'))({parseTokens: true, toc: true}),
     path = require('path');
 
 const MARKDOWN_FILE_BASE = path.resolve(process.cwd(), config.md.base_path);