2 files changed, 13 insertions, 5 deletions
diff --git a/lib/parse/lex.js b/lib/parse/lex.js
index 941e537..6b3236e 100644
--- a/lib/parse/lex.js
+++ b/lib/parse/lex.js
@@ -30,6 +30,11 @@ function sectionType(nodes, idx) {
     return 'normal';
 }
 
+// Generate a uniqueId to identify this section in our code
+function sectionId(section, idx) {
+    return _.uniqueId('gitbook_');
+}
+
 function lexPage(src) {
     // Lex file
     var nodes = marked.lexer(src);
@@ -40,6 +45,12 @@ function lexPage(src) {
         section.type = sectionType(section, idx);
         return section;
     })
+    .map(function(section, idx) {
+        // Give each section an ID
+        section.id = sectionId(section, idx);
+        return section;
+
+    })
     .filter(function(section) {
         return !_.isEmpty(section);
     })
diff --git a/lib/parse/page.js b/lib/parse/page.js
index 559be91..56a9e60 100644
--- a/lib/parse/page.js
+++ b/lib/parse/page.js
@@ -42,9 +42,6 @@ function parsePage(src, options) {
     // Lex if not already lexed
     return (_.isArray(src) ? src : lex(src))
     .map(function(section) {
-        // Generate a uniqueId to identify this section in our code
-        var id = _.uniqueId('gitbook_');
-
         // Transform given type
         if(section.type === 'exercise') {
             var nonCodeNodes = _.reject(section, {
@@ -67,7 +64,7 @@ function parsePage(src, options) {
             var lang = validLangs ? langs[0] : null;
 
             return {
-                id: id,
+                id: section.id,
                 type: section.type,
                 content: render(nonCodeNodes),
                 lang: lang,
@@ -81,7 +78,7 @@ function parsePage(src, options) {
 
         // Render normal pages
         return {
-            id: id,
+            id: section.id,
             type: section.type,
             content: render(section, options)
         };