dist/script.[hash].js wasn't be compressed with running ng build --prod command line

[axetroy]

OS?

Mac OSX Yosemite

Versions.

angular-cli: 1.0.0-beta.17
node: 6.5.0
os: darwin x64

Repro steps.

The log given by the failure.

All pass no fail

Mention any other details that might be useful.

angular-cli.json

      "scripts": [
        "../node_modules/jquery/dist/jquery.js",
        "../node_modules/bootstrap/dist/js/bootstrap.js",
        "../node_modules/moment/moment.js"
      ],

and run command line ng build --prod

Here is a part of code about dist/script.[hash].js

webpackJsonp([2,3],{121:function(t,n){t.exports=function(t){"undefined"!=typeof execScript?execScript(t):eval.call(null,t)}},212:function(t,n,e){e(121)(e(435))},213:function(t,n,e){e(121)(e(436))},214:function(t,n,e){e(121)(e(437))},435:function(t,n){t.exports="/*!\n * Bootstrap v3.3.7 (http://getbootstrap.com)\n * Copyright 2011-2016 Twitter, Inc.\n * Licensed under the MIT license\n */\n\nif (typeof jQuery === 'undefined') {\n  throw new Error('Bootstrap\\'s JavaScript requires jQuery')\n}\n\n+function ($) {\n  'use strict';\n  var version = $.fn.jquery.split(' ')[0].split('.')\n  if ((version[0] < 2 && version[1] < 9) || (version[0] == 1 && version[1] == 9 && version[2] < 1) || (version[0] > 3)) {\n    throw new Error('Bootstrap\\'s JavaScript requires jQuery version 1.9.1 or higher, but lower than version 4')\n  }\n}(jQuery);\n\n/* ========================================================================\n * Bootstrap: transition.js v3.3.7\n * http://getbootstrap.com/javascript/#transitions\n * ========================================================================\n * Copyright 2011-2016 Twitter, Inc.\n * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)\n * ======================================================================== */\n\n\n+function ($) {\n  'use strict';\n\n  // CSS TRANSITION SUPPORT (Shoutout: http://www.modernizr.com/)\n  // ============================================================\n\n  function transitionEnd() {\n    var el = document.createElement('bootstrap')\n\n    var transEndEventNames = {\n      WebkitTransition : 'webkitTransitionEnd',\n      MozTransition    : 'transitionend',\n      OTransition      : 'oTransitionEnd otransitionend',\n      transition       : 'transitionend'\n    }\n\n    for (var name in transEndEventNames) {\n      if (el.style[name] !== undefined) {\n        return { end: transEndEventNames[name] }\n      }\n    }\n\n    return false // explicit for ie8 (  ._.)\n  }\n\n  // http://blog.alexmaccaw.com/css-transitions\n  $.fn.emulateTransitionEnd = function (duration) {\n    var called = false\n    var $el = this\n    $(this).one('bsTransitionEnd', function () { called = true })\n    var callback = function () { if (!called) $($el).trigger($.support.transition.end) }\n    setTimeout(callback, duration)\n    return this\n  }\n\n  $(function () {\n    $.support.transition = transitionEnd()\n\n    if (!$.support.transition) return\n\n    $.event.special.bsTransitionEnd = {\n      bindType: $.support.transition.end,\n      delegateType: $.support.transition.end,\n      handle: function (e) {\n        if ($(e.target).is(this)) return e.handleObj.handler.apply(this, arguments)\n      }\n    }\n  })\n\n}(jQuery);\n\n/* ========================================================================\n * Bootstrap: alert.js v3.3.7\n * http://getbootstrap.com/javascript/#alerts\n * ========================================================================\n * Copyright 2011-2016 Twitter, Inc.\n * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)\n * ======================================================================== */\n\n\n+function ($) {\n  'use strict';\n\n  // ALERT CLASS DEFINITION\n  // ======================\n\n  var dismiss = '[data-dismiss=\"alert\"]'\n  var Alert   = function (el) {\n    $(el).on('click', dismiss, this.close)\n  }\n\n  Alert.VERSION = '3.3.7'\n\n  Alert.TRANSITION_DURATION = 150\n\n  Alert.prototype.close = function (e) {\n    var $this    = $(this)\n    var selector = $this.attr('data-target')\n\n    if (!selector) {\n      selector = $this.attr('href')\n      selector = selector && selector.replace(/.*(?=#[^\\s]*$)/, '') // strip for ie7\n    }\n\n    var $parent = $(selector === '#' ? [] : selector)\n\n    if (e) e.preventDefault()\n\n    if (!$parent.length) {\n      $parent = $this.closest('.alert')\n    }\n\n    $parent.trigger(e = $.Event('close.bs.alert'))\n\n    if (e.isDefaultPrevented()) return\n\n    $parent.removeClass('in')\n\n    function removeElement() {\n      // detach from parent, fire event then clean up data\n      $parent.detach().trigger('closed.bs.alert').remove()\n    }\n\n    $.support.transition && $parent.hasClass('fade') ?\n      $parent\n        .one('bsTransitionEnd', removeElement)\n        .emulateTransitionEnd(Alert.TRANSITION_DURATION) :\n      removeElement()\n  }\n\n\n  // ALERT PLUGIN DEFINITION\n  // =======================\n\n  function Plugin(option) {\n    return this.each(function () {\n      var $this = $(this)\n      var data  = $this.data('bs.alert')\n\n      if (!data) $this.data('bs.alert', (data = new Alert(this)))\n      if (typeof option == 'string') data[option].call($this)\n    })\n  }\n\n  var old = $.fn.alert\n\n  $.fn.alert             = Plugin\n  $.fn.alert.Constructor = Alert\n\n\n  // ALERT NO CONFLICT\n  // =================\n\n  $.fn.alert.noConflict = function () {\n    $.fn.alert = old\n    return this\n  }\n\n\n  // ALERT DATA-API\n  // ==============\n\n  $(document).on('click.bs.alert.data-api', dismiss, Alert.prototype.close)\n\n}(jQuery);\n\n/* ========================================================================\n * Bootstrap: button.js v3.3.7\n * http://getbootstrap.com/javascript/#buttons\n * ========================================================================\n * Copyright 2011-2016 Twitter, Inc.\n * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)\n * ======================================================================== */\n\n\n+function ($) {\n  'use strict';\n\n  // BUTTON PUBLIC CLASS DEFINITION\n  // ==============================\n\n  var Button = function (element, options) {\n    this.$element  = $(element)\n    this.options   = $.extend({}, Button.DEFAULTS, options)\n    this.isLoading = false\n  }\n\n  Button.VERSION  = '3.3.7'\n\n  Button.DEFAULTS = {\n    loadingText: 'loading...'\n  }\n\n  Button.prototype.setState = function (state) {\n    var d    = 'disabled'\n    var $el  = this.$element\n    var val  = $el.is('input') ? 'val' : 'html'\n    var data = $el.data()\n\n    state += 'Text'\n\n    if (data.resetText == null) $el.data('resetText', $el[val]())\n\n    // push to event loop to allow forms to submit\n    setTimeout($.proxy(function () {\n      $el[val](data[state] == null ? this.options[state] : data[state])\n\n      if (state == 'loadingText') {\n        this.isLoading = true\n        $el.addClass(d).attr(d, d).prop(d, true)\n      } else if (this.isLoading) {\n        this.isLoading = false\n        $el.removeClass(d).removeAttr(d).prop(d, false)\n      }\n    }, this), 0)\n  }\n\n  Button.prototype.toggle = function () {\n    var changed = true\n    var $parent = this.$element.closest('[data-toggle=\"buttons\"]')\n\n    if ($parent.length) {\n      var $input = this.$element.find('input')\n      if ($input.prop('type') == 'radio') {\n        if ($input.prop('checked')) changed = false\n        $parent.find('.active').removeClass('active')\n        this.$element.addClass('active')\n      } else if ($input.prop('type') == 'checkbox') {\n        if (($input.prop('checked')) !== this.$element.hasClass('active')) changed = false\n        this.$element.toggleClass('active')\n      }\n      $input.prop('checked', this.$element.hasClass('active'))\n      if (changed) $input.trigger('change')\n    } else {\n      this.$element.attr('aria-pressed', !this.$element.hasClass('active'))\n      this.$element.toggleClass('active')\n    }\n  }\n\n\n  // BUTTON PLUGIN DEFINITION\n  // ========================\n\n  function Plugin(option) {\n    return this.each(function () {\n      var $this   = $(this)\n      var data    = $this.data('bs.button')\n      var options = typeof option == 'object' && option\n\n      if (!data) $this.data('bs.button', (data = new Button(this, options)))\n\n      if (option == 'toggle') data.toggle()\n      else if (option) data.setState(option)\n    })\n  }\n\n  var old = $.fn.button\n\n  $.fn.button             = Plugin\n  $.fn.button.Constructor = Button\n\n\n  // BUTTON NO CONFLICT\n  // ==================\n\n  $.fn.button.noConflict = function () {\n    $.fn.button = old\n    return this\n  }\n\n\n  // BUTTON DATA-API\n  // ===============\n\n  $(document)\n    .on('click.bs.button.data-api', '[data-toggle^=\"button\"]', function (e) {\n      var $btn = $(e.target).closest('.btn')\n      Plugin.call($btn, 'toggle')\n      if (!($(e.target).is('input[type=\"radio\"], input[type=\"checkbox\"]'))) {\n        // Prevent double click on radios, and the double selections (so cancellation) on checkboxes\n        e.preventDefault()\n        // The target component still receive the focus\n        if ($btn.is('input,button')) $btn.trigger('focus')\n        else $btn.find('input:visible,button:visible').first().trigger('focus')\n      }\n    })\n    .on('focus.bs.button.data-api blur.bs.button.data-api', '[data-toggle^=\"button\"]', function (e) {\n      $(e.target).closest('.btn').toggleClass('focus', /^focus(in)?$/.test(e.type))\n    })\n\n}(jQuery);\n\n/* ========================================================================\n * Bootstrap: carousel.js v3.3.7\n * http://getbootstrap.com/javascript/#carousel\n * ========================================================================\n * Copyright 2011-2016 Twitter, Inc.\n * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)\n * ======================================================================== */\n\n\n+function ($) {\n  'use strict';\n\n  // CAROUSEL CLASS DEFINITION\n  // =========================\n\n  var Carousel = function (element, options) {\n    this.$element    = $(element)\n    this.$indicators = this.$element.find('.carousel-indicators')\n    this.options     = options\n    this.paused      = null\n    this.sliding     = null\n    this.interval    = null\n    this.$active     = null\n    this.$items      = null\n\n    this.options.keyboard && this.$element.on('keydown.bs.carousel', $.proxy(this.keydown, this))\n\n    this.options.pause == 'hover' && !('ontouchstart' in document.documentElement) && this.$element\n      .on('mouseenter.bs.carousel', $.proxy(this.pause, this))\n      .on('mouseleave.bs.carousel', $.proxy(this.cycle, this))\n  }\n\n  Carousel.VERSION  = '3.3.7'\n\n  Carousel.TRANSITION_DURATION = 600\n\n  Carousel.DEFAULTS = {\n    interval: 5000,\n    pause: 'hover',\n    wrap: true,\n    keyboard: true\n  }\n\n  Carousel.prototype.keydown = function (e) {\n    if (/input|textarea/i.test(e.target.tagName)) return\n    switch (e.which) {\n      case 37: this.prev(); break\n      case 39: this.next(); break\n      default: return\n    }\n\n    e.preventDefault()\n  }\n\n  Carousel.prototype.cycle = function (e) {\n    e || (this.paused = false)\n\n    this.interval && clearInterval(this.interval)\n\n    this.options.interval\n      && !this.paused\n      && (this.interval = setInterval($.proxy(this.next, this), this.options.interval))\n\n    return this\n  }\n\n  Carousel.prototype.getItemIndex = function (item) {\n    this.$items = item.parent().children('.item')\n    return this.$items.index(item || this.$active)\n  }\n\n  

You can see that, this pack wasn't be compressed

same as style

[clydin]

Webpack's script-loader dumps the scripts in a giant eval. This prevents any optimizations from occurring.

The use of eval is also going to cause problems for strict CSP configurations.

[filipesilva]

@clydin I didn't know that was why script-loader didn't optimise anything, thanks for the info!

Going over the issue tracker for script-loader I find webpack-contrib/script-loader#1 and webpack-contrib/script-loader#9, which make me think this is fixable by chaining an uglifier into script loader in prod builds.

It is also possible to just pass in the minified scripts on the scripts array, but not might be suboptimal overall.

[clydin]

@filipesilva your welcome. Chaining an uglifier loader should fix the optimization problem but adds an additional 3rd party dependency and also doesn't solve the CSP issue. With the increasing stability of AOT support, stricter CSP configurations are becoming more viable.

[kylecordes]

In this discussion about how/whether included scripts should get minified, there is an important practical factor that I believe is worthy of getting right.

Some libraries (and in particular, of relevance to us hopefully here, Angular 1.x) ship a development build and a production/minified build, and the latter is not just the result of running the former through a minifier, but rather the result of additional, library specific differences between something intended for development versus production.

Therefore, I believe the most correct answer to this is that the configuration file should accept two lists of scripts; one for development and another for production. As application authors we can then include the path of the correct corresponding library files. This yields smaller (and sometimes faster) results than just grabbing all of the development libraries and minifying them.

As an additional convenience, it would be most ideal if there is a way to further ask CLI to minify third-party libraries which do not ship with the production build in the box.

[clydin]

This could be accomplished by allowing both a string and an object in the scripts setting. The object could contain production and development fields. Keeping the string allows backward compatibility as well as simplifying the typical use case.

However, some important questions to ask: how often will this be needed? And is it worth the added complexity and cost to maintain long-term?

As to minifying, why not always minify during production builds and keep things simple?

[kylecordes]

why not always minify during production builds

Certainly this keeps things simple. I think the goals of CLI include both simplicity for the application developer and high quality production-grade results. Each tradeoff that gets more of the first by sacrificing the second, pushes another increment of developers away from CLI to their own application-specific ad hoc process.

[clydin]

@kylecordes, my last question was not meant to suggest the lack of need for the bifurcation of the scripts option. But instead meant to be more speculative; as in, even with the addition, why not always minify production? Especially if the scripts can be bundled and optimizations can be run as a whole. But there may well be edge cases that need to be considered.

Personally and in a more general context, I've found that simplicity generally leads to higher quality production-grade results. More options leads to additional complexity which leads to a high cost toolchain and misconfigured projects. But, of course, simplicity and high quality are subjective and usually moving targets.
But i've gone off-topic. I'll leave it to @filipesilva to decide on a path forward.

[filipesilva]

Personally I think the most practical avenue is to always uglify/minify scripts. But there have been talks of having an alternative way of pulling in scripts in prod (e.g. from a CDN). That's definitely a feature for the future though.