simplify the build process

gulpfile.js

@@ -1,20 +1,23 @@
-'use strict';
+var gulp = require('gulp');
+var browserify = require('browserify')
+var rename = require('gulp-rename');
+var source = require('vinyl-source-stream');
+var sourcemaps = require('gulp-sourcemaps');
+var buffer = require('vinyl-buffer');
 
-const gulp = require('gulp');
-const mkdirp = require('mkdirp');
-const del = require('del');
-const path = require('path');
-const buildTasks = path.join(process.cwd(), 'build-tasks');
-
-gulp.task('clean-dist', () => del('dist'));
-//gulp.task('compile-vendor-js', require(path.join(buildTasks, 'compile-vendor-js')));
-gulp.task('compile-js', require(path.join(buildTasks, 'compile-js')));
-gulp.task('watcher', require(path.join(buildTasks, 'watcher')));
-
-gulp.task('build', ['clean-dist'], () => {
-    mkdirp.sync('dist');
-    gulp.start('compile-js');
+gulp.task('build', function() {
+    var app = browserify('./src/js/main.js');
+    return app.bundle()
+        .pipe(source("not-used-but-needed-string.js"))
+        .pipe(buffer())
+        .pipe(sourcemaps.init({ loadMaps: true }))
+        .pipe(sourcemaps.write())
+        .pipe(rename('image-editor.js'))
+        .pipe(gulp.dest('./dist'))
 });
 
-gulp.task('watch', ['build', 'watcher']);
-gulp.task('default', ['build']);
+gulp.task('watch', function() {
+    gulp.watch('src/**/*.js', ['build']);
+});
+
+gulp.task('default', ['build']);