gulpfile.js

let fs = require('fs')
let gulp = require("gulp")
let babel = require('gulp-babel')
let rename = require('gulp-rename')
let concat = require('gulp-concat')
let browserify = require("browserify")
let path = require('path')
let plumber = require('gulp-plumber')

gulp.task('clean', function () {
  del.sync(['build/*'])
  return del.sync(['bin/*'])
})

gulp.task('dump', ['clean'], function (callback) {
  gulp.src("vendor/**/*")
    .pipe(gulp.dest('./build/vendor'))
  return callback()
})

gulp.task('babel', function () {
  return gulp.src('src/**/*.js')
    .pipe(plumber())
    .pipe(babel({
      presets: ['es2015'],
      plugins: ['transform-runtime']
    }))

    .pipe(gulp.dest('./build'))
})

gulp.task('weex', ['babel'], function () {
  return gulp.src('./build/index.js')
    .pipe(wrap("#!/usr/bin/env node \n\n<%= contents %>"))
    .pipe(gulp.dest('./bin'))
})

gulp.task('browserify', ['babel'], function (callback) {
  browserify("./build/debugger-client.js", {debug: false})
    .bundle()
    .pipe(source('debugger-client-browserify.js'))  //vinyl-source-stream
    .pipe(gulp.dest('./build/'))
  return callback()
})

gulp.task('less', function (callback) {
  gulp.src('./src/css/**/*.less')
    .pipe(less({
      paths: [path.join(__dirname, 'src/css/', 'includes')]
    }))
    .pipe(gulp.dest('./build/css'))

  gulp.src('./src/css/**/*.css')
    .pipe(gulp.dest('./build/css'))

  return callback()
})

gulp.task('build', ['browserify'], function (cb) {

  return cb()
})

gulp.task('watch', function () {
  gulp.watch('src/**/*.js', ['build'])
})

gulp.task('default', ['watch'])