Added a method to set/get a Handlebars instance

index.js

@@ -1,10 +1,10 @@
 var gutil = require('gulp-util');
 var through = require('through2');
-var Handlebars = require('handlebars');
 var Promise = require('bluebird');
 var _ = require('lodash');
 var Path = require('path');
 var writable = require('./lib/writable');
+var Handlebars = null;
 
 /**
  * Duck-typing to allow different promise implementations to work.
@@ -59,7 +59,7 @@ function getPromises(obj, fn) {
   } else if (isPromise(obj)) {
     obj.then(function (result) {
       getPromises(result, fn);
-    })
+    });
   }
   return [];
 }
@@ -68,8 +68,8 @@ module.exports = function (data, options) {
   var dataDependencies;
   options = options || {};
   var dependencies = [];
+  Handlebars = Handlebars || require('handlebars');
   //Go through a partials object
-
   if (data) {
     if (isPromise(data)) {
       dataDependencies = data.then(function (result) {
@@ -126,4 +126,12 @@ module.exports = function (data, options) {
   });
 };
 
-module.exports.Handlebars = Handlebars;
+
+module.exports.using = function () {
+  Handlebars = Handlebars || require('handlebars');
+  return Handlebars;
+};
+
+module.exports.use = function (customHandlebars) {
+  Handlebars = customHandlebars;
+};