Add immutable ignore instance for book

2 files changed, 6 insertions, 4 deletions

diff --git a/lib/parse/parseBook.js b/lib/parse/parseBook.js
index 84a4038..a92f39e 100644
--- a/lib/parse/parseBook.js
+++ b/lib/parse/parseBook.js
@@ -42,7 +42,7 @@ function parseMultilingualBook(book) {
         .then(parseBookContent)
         .then(function(result) {
             // Ignore content of this book when generating parent book
-            ignore.add(langID + '/**');
+            ignore = ignore.add(langID + '/**');
             currentBook = currentBook.set('ignore', ignore);
 
             return currentBook.addLanguageBook(langID, result);
diff --git a/lib/parse/parseIgnore.js b/lib/parse/parseIgnore.js
index fafcc6f..d13663d 100644
--- a/lib/parse/parseIgnore.js
+++ b/lib/parse/parseIgnore.js
@@ -15,7 +15,7 @@ function parseIgnore(book) {
     var fs = book.getFS();
     var ignore = book.getIgnore();
 
-    ignore.addPattern([
+    ignore = ignore.add([
         // Skip Git stuff
         '.git/',
 
@@ -35,13 +35,15 @@ function parseIgnore(book) {
     return Promise.serie(IGNORE_FILES, function(filename) {
         return fs.readAsString(filename)
         .then(function(content) {
-            ignore.addPattern(content.toString().split(/\r?\n/));
+            ignore = ignore.add(content.toString().split(/\r?\n/));
         }, function(err) {
             return Promise();
         });
     })
 
-    .thenResolve(book);
+    .then(function() {
+        return book.setIgnore(ignore);
+    });
 }
 
 module.exports = parseIgnore;