1 files changed, 38 insertions, 0 deletions
diff --git a/lib/utils/watch.js b/lib/utils/watch.js
new file mode 100644
index 0000000..795bbb7
--- /dev/null
+++ b/lib/utils/watch.js
@@ -0,0 +1,38 @@
+var Q = require('q');
+var _ = require('lodash');
+var path = require('path');
+var Gaze = require('gaze').Gaze;
+
+var parsers = require('gitbook-parsers')
+
+function watch(dir) {
+    var d = Q.defer();
+    dir = path.resolve(dir);
+
+    var toWatch = [
+        "book.json", "book.js"
+    ];
+
+    _.each(parsers.extensions, function(ext) {
+        toWatch.push("**/*"+ext);
+    });
+
+    var gaze = new Gaze(toWatch, {
+        cwd: dir
+    });
+
+    gaze.once("all", function(e, filepath) {
+        gaze.close();
+
+        d.resolve(filepath);
+    });
+    gaze.once("error", function(err) {
+        gaze.close();
+
+        d.reject(err);
+    });
+
+    return d.promise;
+}
+
+module.exports = watch;