Change through2 to event-stream

index.js

@@ -1,16 +1,21 @@
-var through     = require('through2');
+var es          = require('event-stream');
 var _           = require('lodash');
+var gutil       = require('gulp-util');
+var PluginError = gutil.PluginError;
 
 var angularModulesFactory =
   new (require('angular-dependency/lib')).AngularModulesFactory();
 
+// consts
+const PLUGIN_NAME = 'gulp-angular-dependency';
+
 // plugin level function (dealing with files)
 function gulpAngularDependency (modules) {
 
   function addToStream (stream, module) {
-    stream.push(files[module.defined]);
+    stream.emit('data', files[module.defined]);
     _.each(module.contents, function (path) {
-      stream.push(files[path]);
+      stream.emit('data', files[path]);
     });
   }
 
@@ -19,27 +24,22 @@ function gulpAngularDependency (modules) {
 
   // creating a stream through which each file will pass
   // returning the file stream
-  return through.obj(function (chunk, enc, cb) {
+  return es.through(function (chunk) {
     if (chunk.isNull()) {
       // do nothing if no contents
     }
 
     if (chunk.isBuffer()) {
       angularModulesFactory.processFile(chunk.contents.toString(), chunk.path);
-      cb();
     }
     if (chunk.isStream()) {
-      chunk.contents = chunk.contents.pipe(through.obj(function (content, enc, done) {
-        angularModulesFactory.processFile(content.toString(), chunk.path);
-        done();
-      }, function () {
-        cb();
-      }));
+      return this.emit('error',
+        new PluginError(PLUGIN_NAME,  'Streaming not supported'));
     }
 
     files[chunk.path] = chunk;
 
-  }, function (cb) {
+  }, function () {
     var topology = angularModulesFactory.getAngularModules();
     var that = this;
     if (modules && modules.length) {
@@ -53,7 +53,7 @@ function gulpAngularDependency (modules) {
         addToStream(that, module);
       });
     }
-    cb();
+    this.emit('end');
   });
 }
 

package.json

@@ -1,6 +1,6 @@
 {
   "name": "gulp-angular-dependency",
-  "version": "0.1.2",
+  "version": "0.1.3",
   "description": "A gulp plugin which will retrieve files needed by angular modules through your filesystem",
   "main": "index.js",
   "scripts": {
@@ -31,7 +31,8 @@
   },
   "dependencies": {
     "angular-dependency": "^0.1.4",
-    "lodash": "^2.4.1",
-    "through2": "^0.6.1"
+    "event-stream": "^3.1.7",
+    "gulp-util": "^3.0.1",
+    "lodash": "^2.4.1"
   }
 }

test/main.js

@@ -1,9 +1,10 @@
 var assert             = require('assert');
 var vfs                = require('vinyl-fs');
-var through            = require('through2');
+var es                 = require('event-stream');
 var angularDependency  = require('../');
 var path               = require('path');
-
+var gutil              = require('gulp-util');
+var PluginError        = gutil.PluginError;
 
 describe('gulp-angular-dependency', function () {
   var files;
@@ -16,25 +17,8 @@ describe('gulp-angular-dependency', function () {
     'dependencies', function (done) {
     vfs.src('test/test_case/test_case_1/*')
       .pipe(angularDependency('module1'))
-      .pipe(through.obj(function (chunk, enc, cb) {
-        files.push(path.relative(__dirname, chunk.path));
-        cb();
-      }, function () {
-        assert.deepEqual(files, [
-          'test_case/test_case_1/file_0_2.js',
-          'test_case/test_case_1/file_0_1.js',
-          'test_case/test_case_1/file_0_3.js',
-          'test_case/test_case_1/file_0_5.js']);
-        done();
-      }));
-  });
-
-  it('should support stream as well', function (done) {
-    vfs.src('test/test_case/test_case_1/*', { buffer: false })
-      .pipe(angularDependency('module1'))
-      .pipe(through.obj(function (chunk, enc, cb) {
+      .pipe(es.through(function (chunk) {
         files.push(path.relative(__dirname, chunk.path));
-        cb();
       }, function () {
         assert.deepEqual(files, [
           'test_case/test_case_1/file_0_2.js',
@@ -48,9 +32,8 @@ describe('gulp-angular-dependency', function () {
   it('should be possible to require multiple modules', function (done) {
     vfs.src('test/test_case/test_case_2/*')
       .pipe(angularDependency(['module1', 'module2']))
-      .pipe(through.obj(function (chunk, enc, cb) {
+      .pipe(es.through(function (chunk) {
         files.push(path.relative(__dirname, chunk.path));
-        cb();
       }, function () {
         assert.deepEqual(files, [
           'test_case/test_case_2/file_0_1.js',
@@ -62,16 +45,15 @@ describe('gulp-angular-dependency', function () {
 
   it('should pass all files containing angular code if no module is defined',
     function (done) {
-      var checking = through.obj(function (chunk, enc, cb) {
+      var checking = es.through(function (chunk) {
         files.push(path.relative(__dirname, chunk.path));
-        this.push(chunk);
-        cb();
-      }, function (cb) {
+        this.emit('data', chunk);
+      }, function () {
         assert.deepEqual(files, [
           'test_case/test_case_3/file_0_1.js',
           'test_case/test_case_3/file_0_3.js',
           'test_case/test_case_3/file_0_2.js']);
-        cb();
+        this.emit('end');
       });
 
       vfs.src('test/test_case/test_case_3/*')
@@ -81,7 +63,7 @@ describe('gulp-angular-dependency', function () {
         .pipe(checking)
         .pipe((function () {
           done();
-          return through();
+          return es.through();
         })())
     });
 });