Adding a callback function as a config option to the bundle complete event

Author: Wes24

lib/stream-bundles-watch.js

@@ -73,7 +73,7 @@ function _bundle(config, env) {
                 .pipe(gif(resultOpts, results(resultOpts)))
                 .pipe(gulp.dest(config.options.dest))
                 .pipe(through.obj(function (file, enc, cb) {
-                  bundleDone(prettyScriptsBundleName, start);
+                  bundleDone(prettyScriptsBundleName, start, config.options.callback, file);
                 }));
 
             });
@@ -109,7 +109,7 @@ function _bundle(config, env) {
                 .pipe(gif(resultOpts, results(resultOpts)))
                 .pipe(gulp.dest(config.options.dest))
                 .pipe(through.obj(function (file, enc, cb) {
-                  bundleDone(prettyStylesBundleName, start);
+                  bundleDone(prettyStylesBundleName, start, config.options.callback, file);
                 }));
 
             });

lib/watch/bundle-done.js

@@ -4,10 +4,13 @@ var gulp = require('gulp'),
   prettyTime = require('pretty-hrtime'),
   using = require('./../using');
 
-module.exports = function (name, start) {
+module.exports = function (name, start, callback, file) {
   var hrDuration = process.hrtime(start); // [seconds,nanoseconds]
   var time = prettyTime(hrDuration);
   logger.log('Finished bundling', '\'' + gutil.colors.green(name) + '\'',
     'after', gutil.colors.magenta(time)
   );
-};
+  if (callback && typeof(callback) === 'function') {
+    callback(file);
+  }
+};

test/unit/watch/bundle-done-test.js

@@ -9,17 +9,21 @@ describe('bundle-done', function () {
 
     var prettyTimeStub = sinon.stub().returns('');
 
+    var callback = sinon.spy();
+    var mockFile = {};
     var loggerStub = sinon.stub();
     loggerStub.log = sinon.spy();
 
     var bundleDone = proxyquire(libPath + '/watch/bundle-done', { 'pretty-hrtime': prettyTimeStub, '../service/logger': loggerStub });
 
-    bundleDone('main.scripts', [ 1800216, 25 ]);
+    bundleDone('main.scripts', [ 1800216, 25 ], callback, mockFile);
 
     prettyTimeStub.calledOnce.should.be.ok;
     loggerStub.log.calledOnce.should.be.ok;
     loggerStub.log.calledWith('Finished bundling').should.be.ok;
-
+      
+    callback.calledOnce.should.be.ok;
+    callback.calledWith(mockFile).should.be.ok;
   });
 
 });