For multi-langs, run build one by one

1 files changed, 3 insertions, 3 deletions

diff --git a/lib/generate/index.js b/lib/generate/index.js
index 359708b..8c6450c 100644
--- a/lib/generate/index.js
+++ b/lib/generate/index.js
@@ -135,14 +135,14 @@ var generateMultiLang = function(options) {
         options.langsSummary = parse.langs(langsSummary);
 
         // Generated a book for each valid entry
-        return Q.all(
-            _.map(options.langsSummary.list, function(entry) {
+        return _.reduce(options.langsSummary.list, function(prev, entry) {
+            return prev.then(function() {
                 return generate(_.extend({}, options, {
                     input: path.join(options.input, entry.path),
                     output: path.join(options.output, entry.path)
                 }));
             })
-        );
+        }, Q());
     })
 
     .then(function() {