Добавлена задача browserify

gulpfile.js

@@ -414,7 +414,7 @@ gulp.task('js', function (callback) {
   }
 });
 
-gulp.task('bf', function () {
+gulp.task('browserify', function () {
   var browserify = require('browserify');
   var source = require('vinyl-source-stream');
   var buffer = require('vinyl-buffer');
@@ -424,12 +424,14 @@ gulp.task('bf', function () {
   var b = browserify({
     entries: dirs.srcPath + '/js/global-script.js',
     debug: true
-  });
+  }).transform('babelify', {presets: ['@babel/preset-env']});
    return b.bundle()
-    .pipe(source('script.min.js'))
+    .pipe(source('script.js'))
+    .pipe(gulp.dest(dirs.buildPath + '/js'))
+    .pipe(rename('script.min.js'))
     .pipe(buffer())
     .pipe(sourcemaps.init({loadMaps: true}))
-    // .pipe(uglify())
+    .pipe(uglify())
     .on('error', function(){ console.log('error'); })
     .pipe(sourcemaps.write('./'))
     .pipe(gulp.dest(dirs.buildPath + '/js'));

package.json

@@ -30,8 +30,11 @@
     "*.scss": "stylelint --syntax=scss"
   },
   "devDependencies": {
+    "@babel/core": "^7.1.6",
+    "@babel/preset-env": "^7.1.6",
     "@htmlacademy/editorconfig-cli": "^1.0.0",
     "autoprefixer": "^9.3.1",
+    "babelify": "^10.0.0",
     "browser-sync": "^2.18.8",
     "browserify": "^16.2.3",
     "chalk": "^2.4.1",

src/js/global-script.js

@@ -21,8 +21,5 @@
 //   // code
 // });
 
-let foo = 0;
-console.log(foo);
-
-require('./script-a.js');
-require('./script-b.js');
+// Взять целевой файл
+// require('./some-file.js');

src/js/script-a.js

-require('./script-dep.js');
-
-console.log('this is script A');

src/js/script-b.js

-require('./script-dep.js');
-
-console.log('this is script B');

src/js/script-dep.js

-console.log('this is script DEPENDENCY');