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node_modules/clean-css/lib/clean.js

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+/**
+ * Clean-css - https://github.com/jakubpawlowicz/clean-css
+ * Released under the terms of MIT license
+ *
+ * Copyright (C) 2015 JakubPawlowicz.com
+ */
+
+var ImportInliner = require('./imports/inliner');
+var rebaseUrls = require('./urls/rebase');
+
+var tokenize = require('./tokenizer/tokenize');
+var simpleOptimize = require('./selectors/simple');
+var advancedOptimize = require('./selectors/advanced');
+
+var simpleStringify = require('./stringifier/simple');
+var sourceMapStringify = require('./stringifier/source-maps');
+
+var CommentsProcessor = require('./text/comments-processor');
+var ExpressionsProcessor = require('./text/expressions-processor');
+var FreeTextProcessor = require('./text/free-text-processor');
+var UrlsProcessor = require('./text/urls-processor');
+
+var Compatibility = require('./utils/compatibility');
+var InputSourceMapTracker = require('./utils/input-source-map-tracker');
+var SourceTracker = require('./utils/source-tracker');
+var SourceReader = require('./utils/source-reader');
+var Validator = require('./properties/validator');
+
+var fs = require('fs');
+var path = require('path');
+var url = require('url');
+
+var override = require('./utils/object').override;
+
+var DEFAULT_TIMEOUT = 5000;
+
+var CleanCSS = module.exports = function CleanCSS(options) {
+  options = options || {};
+
+  this.options = {
+    advanced: undefined === options.advanced ? true : !!options.advanced,
+    aggressiveMerging: undefined === options.aggressiveMerging ? true : !!options.aggressiveMerging,
+    benchmark: options.benchmark,
+    compatibility: new Compatibility(options.compatibility).toOptions(),
+    debug: options.debug,
+    explicitRoot: !!options.root,
+    explicitTarget: !!options.target,
+    inliner: options.inliner || {},
+    keepBreaks: options.keepBreaks || false,
+    keepSpecialComments: 'keepSpecialComments' in options ? options.keepSpecialComments : '*',
+    mediaMerging: undefined === options.mediaMerging ? true : !!options.mediaMerging,
+    processImport: undefined === options.processImport ? true : !!options.processImport,
+    processImportFrom: importOptionsFrom(options.processImportFrom),
+    rebase: undefined === options.rebase ? true : !!options.rebase,
+    relativeTo: options.relativeTo,
+    restructuring: undefined === options.restructuring ? true : !!options.restructuring,
+    root: options.root || process.cwd(),
+    roundingPrecision: options.roundingPrecision,
+    semanticMerging: undefined === options.semanticMerging ? false : !!options.semanticMerging,
+    shorthandCompacting: undefined === options.shorthandCompacting ? true : !!options.shorthandCompacting,
+    sourceMap: options.sourceMap,
+    sourceMapInlineSources: !!options.sourceMapInlineSources,
+    target: !options.target || missingDirectory(options.target) || presentDirectory(options.target) ? options.target : path.dirname(options.target)
+  };
+
+  this.options.inliner.timeout = this.options.inliner.timeout || DEFAULT_TIMEOUT;
+  this.options.inliner.request = override(
+    /* jshint camelcase: false */
+    proxyOptionsFrom(process.env.HTTP_PROXY || process.env.http_proxy),
+    this.options.inliner.request || {}
+  );
+};
+
+function importOptionsFrom(rules) {
+  return undefined === rules ? ['all'] : rules;
+}
+
+function missingDirectory(filepath) {
+  return !fs.existsSync(filepath) && !/\.css$/.test(filepath);
+}
+
+function presentDirectory(filepath) {
+  return fs.existsSync(filepath) && fs.statSync(filepath).isDirectory();
+}
+
+function proxyOptionsFrom(httpProxy) {
+  return httpProxy ?
+    {
+      hostname: url.parse(httpProxy).hostname,
+      port: parseInt(url.parse(httpProxy).port)
+    } :
+    {};
+}
+
+CleanCSS.prototype.minify = function (data, callback) {
+  var context = {
+    stats: {},
+    errors: [],
+    warnings: [],
+    options: this.options,
+    debug: this.options.debug,
+    localOnly: !callback,
+    sourceTracker: new SourceTracker(),
+    validator: new Validator(this.options.compatibility)
+  };
+
+  if (context.options.sourceMap)
+    context.inputSourceMapTracker = new InputSourceMapTracker(context);
+
+  context.sourceReader = new SourceReader(context, data);
+  data = context.sourceReader.toString();
+
+  if (context.options.processImport || data.indexOf('@shallow') > 0) {
+    // inline all imports
+    var runner = callback ?
+      process.nextTick :
+      function (callback) { return callback(); };
+
+    return runner(function () {
+      return new ImportInliner(context).process(data, {
+        localOnly: context.localOnly,
+        imports: context.options.processImportFrom,
+        whenDone: runMinifier(callback, context)
+      });
+    });
+  } else {
+    return runMinifier(callback, context)(data);
+  }
+};
+
+function runMinifier(callback, context) {
+  function whenSourceMapReady (data) {
+    data = context.options.debug ?
+      minifyWithDebug(context, data) :
+      minify(context, data);
+    data = withMetadata(context, data);
+
+    return callback ?
+      callback.call(null, context.errors.length > 0 ? context.errors : null, data) :
+      data;
+  }
+
+  return function (data) {
+    if (context.options.sourceMap) {
+      return context.inputSourceMapTracker.track(data, function () {
+        if (context.options.sourceMapInlineSources) {
+          return context.inputSourceMapTracker.resolveSources(function () {
+            return whenSourceMapReady(data);
+          });
+        } else {
+          return whenSourceMapReady(data);
+        }
+      });
+    } else {
+      return whenSourceMapReady(data);
+    }
+  };
+}
+
+function withMetadata(context, data) {
+  data.stats = context.stats;
+  data.errors = context.errors;
+  data.warnings = context.warnings;
+  return data;
+}
+
+function minifyWithDebug(context, data) {
+  var startedAt = process.hrtime();
+  context.stats.originalSize = context.sourceTracker.removeAll(data).length;
+
+  data = minify(context, data);
+
+  var elapsed = process.hrtime(startedAt);
+  context.stats.timeSpent = ~~(elapsed[0] * 1e3 + elapsed[1] / 1e6);
+  context.stats.efficiency = 1 - data.styles.length / context.stats.originalSize;
+  context.stats.minifiedSize = data.styles.length;
+
+  return data;
+}
+
+function benchmark(runner) {
+  return function (processor, action) {
+    var name =  processor.constructor.name + '#' + action;
+    var start = process.hrtime();
+    runner(processor, action);
+    var itTook = process.hrtime(start);
+    console.log('%d ms: ' + name, 1000 * itTook[0] + itTook[1] / 1000000);
+  };
+}
+
+function minify(context, data) {
+  var options = context.options;
+
+  var commentsProcessor = new CommentsProcessor(context, options.keepSpecialComments, options.keepBreaks, options.sourceMap);
+  var expressionsProcessor = new ExpressionsProcessor(options.sourceMap);
+  var freeTextProcessor = new FreeTextProcessor(options.sourceMap);
+  var urlsProcessor = new UrlsProcessor(context, options.sourceMap, options.compatibility.properties.urlQuotes);
+
+  var stringify = options.sourceMap ? sourceMapStringify : simpleStringify;
+
+  var run = function (processor, action) {
+    data = typeof processor == 'function' ?
+      processor(data) :
+      processor[action](data);
+  };
+
+  if (options.benchmark)
+    run = benchmark(run);
+
+  run(commentsProcessor, 'escape');
+  run(expressionsProcessor, 'escape');
+  run(urlsProcessor, 'escape');
+  run(freeTextProcessor, 'escape');
+
+  function restoreEscapes(data, prefixContent) {
+    data = freeTextProcessor.restore(data, prefixContent);
+    data = urlsProcessor.restore(data);
+    data = options.rebase ? rebaseUrls(data, context) : data;
+    data = expressionsProcessor.restore(data);
+    return commentsProcessor.restore(data);
+  }
+
+  var tokens = tokenize(data, context);
+
+  simpleOptimize(tokens, options, context);
+
+  if (options.advanced)
+    advancedOptimize(tokens, options, context, true);
+
+  return stringify(tokens, options, restoreEscapes, context.inputSourceMapTracker);
+}

node_modules/clean-css/lib/colors/hex-name-shortener.js

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+var HexNameShortener = {};
+
+var COLORS = {
+  aliceblue: '#f0f8ff',
+  antiquewhite: '#faebd7',
+  aqua: '#0ff',
+  aquamarine: '#7fffd4',
+  azure: '#f0ffff',
+  beige: '#f5f5dc',
+  bisque: '#ffe4c4',
+  black: '#000',
+  blanchedalmond: '#ffebcd',
+  blue: '#00f',
+  blueviolet: '#8a2be2',
+  brown: '#a52a2a',
+  burlywood: '#deb887',
+  cadetblue: '#5f9ea0',
+  chartreuse: '#7fff00',
+  chocolate: '#d2691e',
+  coral: '#ff7f50',
+  cornflowerblue: '#6495ed',
+  cornsilk: '#fff8dc',
+  crimson: '#dc143c',
+  cyan: '#0ff',
+  darkblue: '#00008b',
+  darkcyan: '#008b8b',
+  darkgoldenrod: '#b8860b',
+  darkgray: '#a9a9a9',
+  darkgreen: '#006400',
+  darkgrey: '#a9a9a9',
+  darkkhaki: '#bdb76b',
+  darkmagenta: '#8b008b',
+  darkolivegreen: '#556b2f',
+  darkorange: '#ff8c00',
+  darkorchid: '#9932cc',
+  darkred: '#8b0000',
+  darksalmon: '#e9967a',
+  darkseagreen: '#8fbc8f',
+  darkslateblue: '#483d8b',
+  darkslategray: '#2f4f4f',
+  darkslategrey: '#2f4f4f',
+  darkturquoise: '#00ced1',
+  darkviolet: '#9400d3',
+  deeppink: '#ff1493',
+  deepskyblue: '#00bfff',
+  dimgray: '#696969',
+  dimgrey: '#696969',
+  dodgerblue: '#1e90ff',
+  firebrick: '#b22222',
+  floralwhite: '#fffaf0',
+  forestgreen: '#228b22',
+  fuchsia: '#f0f',
+  gainsboro: '#dcdcdc',
+  ghostwhite: '#f8f8ff',
+  gold: '#ffd700',
+  goldenrod: '#daa520',
+  gray: '#808080',
+  green: '#008000',
+  greenyellow: '#adff2f',
+  grey: '#808080',
+  honeydew: '#f0fff0',
+  hotpink: '#ff69b4',
+  indianred: '#cd5c5c',
+  indigo: '#4b0082',
+  ivory: '#fffff0',
+  khaki: '#f0e68c',
+  lavender: '#e6e6fa',
+  lavenderblush: '#fff0f5',
+  lawngreen: '#7cfc00',
+  lemonchiffon: '#fffacd',
+  lightblue: '#add8e6',
+  lightcoral: '#f08080',
+  lightcyan: '#e0ffff',
+  lightgoldenrodyellow: '#fafad2',
+  lightgray: '#d3d3d3',
+  lightgreen: '#90ee90',
+  lightgrey: '#d3d3d3',
+  lightpink: '#ffb6c1',
+  lightsalmon: '#ffa07a',
+  lightseagreen: '#20b2aa',
+  lightskyblue: '#87cefa',
+  lightslategray: '#778899',
+  lightslategrey: '#778899',
+  lightsteelblue: '#b0c4de',
+  lightyellow: '#ffffe0',
+  lime: '#0f0',
+  limegreen: '#32cd32',
+  linen: '#faf0e6',
+  magenta: '#ff00ff',
+  maroon: '#800000',
+  mediumaquamarine: '#66cdaa',
+  mediumblue: '#0000cd',
+  mediumorchid: '#ba55d3',
+  mediumpurple: '#9370db',
+  mediumseagreen: '#3cb371',
+  mediumslateblue: '#7b68ee',
+  mediumspringgreen: '#00fa9a',
+  mediumturquoise: '#48d1cc',
+  mediumvioletred: '#c71585',
+  midnightblue: '#191970',
+  mintcream: '#f5fffa',
+  mistyrose: '#ffe4e1',
+  moccasin: '#ffe4b5',
+  navajowhite: '#ffdead',
+  navy: '#000080',
+  oldlace: '#fdf5e6',
+  olive: '#808000',
+  olivedrab: '#6b8e23',
+  orange: '#ffa500',
+  orangered: '#ff4500',
+  orchid: '#da70d6',
+  palegoldenrod: '#eee8aa',
+  palegreen: '#98fb98',
+  paleturquoise: '#afeeee',
+  palevioletred: '#db7093',
+  papayawhip: '#ffefd5',
+  peachpuff: '#ffdab9',
+  peru: '#cd853f',
+  pink: '#ffc0cb',
+  plum: '#dda0dd',
+  powderblue: '#b0e0e6',
+  purple: '#800080',
+  rebeccapurple: '#663399',
+  red: '#f00',
+  rosybrown: '#bc8f8f',
+  royalblue: '#4169e1',
+  saddlebrown: '#8b4513',
+  salmon: '#fa8072',
+  sandybrown: '#f4a460',
+  seagreen: '#2e8b57',
+  seashell: '#fff5ee',
+  sienna: '#a0522d',
+  silver: '#c0c0c0',
+  skyblue: '#87ceeb',
+  slateblue: '#6a5acd',
+  slategray: '#708090',
+  slategrey: '#708090',
+  snow: '#fffafa',
+  springgreen: '#00ff7f',
+  steelblue: '#4682b4',
+  tan: '#d2b48c',
+  teal: '#008080',
+  thistle: '#d8bfd8',
+  tomato: '#ff6347',
+  turquoise: '#40e0d0',
+  violet: '#ee82ee',
+  wheat: '#f5deb3',
+  white: '#fff',
+  whitesmoke: '#f5f5f5',
+  yellow: '#ff0',
+  yellowgreen: '#9acd32'
+};
+
+var toHex = {};
+var toName = {};
+
+for (var name in COLORS) {
+  var hex = COLORS[name];
+  if (name.length < hex.length)
+    toName[hex] = name;
+  else
+    toHex[name] = hex;
+}
+
+var toHexPattern = new RegExp('(^| |,|\\))(' + Object.keys(toHex).join('|') + ')( |,|\\)|$)', 'ig');
+var toNamePattern = new RegExp('(' + Object.keys(toName).join('|') + ')([^a-f0-9]|$)', 'ig');
+
+function hexConverter(match, prefix, colorValue, suffix) {
+  return prefix + toHex[colorValue.toLowerCase()] + suffix;
+}
+
+function nameConverter(match, colorValue, suffix) {
+  return toName[colorValue.toLowerCase()] + suffix;
+}
+
+HexNameShortener.shorten = function (value) {
+  var hasHex = value.indexOf('#') > -1;
+  var shortened = value.replace(toHexPattern, hexConverter);
+
+  if (shortened != value)
+    shortened = shortened.replace(toHexPattern, hexConverter);
+
+  return hasHex ? shortened.replace(toNamePattern, nameConverter) : shortened;
+};
+
+module.exports = HexNameShortener;

node_modules/clean-css/lib/colors/hsl.js

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+// HSL to RGB converter. Both methods adapted from:
+// http://mjijackson.com/2008/02/rgb-to-hsl-and-rgb-to-hsv-color-model-conversion-algorithms-in-javascript
+
+function HSLColor(hue, saturation, lightness) {
+  this.hue = hue;
+  this.saturation = saturation;
+  this.lightness = lightness;
+}
+
+function hslToRgb(h, s, l) {
+  var r, g, b;
+
+  // normalize hue orientation b/w 0 and 360 degrees
+  h = h % 360;
+  if (h < 0)
+    h += 360;
+  h = ~~h / 360;
+
+  if (s < 0)
+    s = 0;
+  else if (s > 100)
+    s = 100;
+  s = ~~s / 100;
+
+  if (l < 0)
+    l = 0;
+  else if (l > 100)
+    l = 100;
+  l = ~~l / 100;
+
+  if (s === 0) {
+    r = g = b = l; // achromatic
+  } else {
+    var q = l < 0.5 ?
+      l * (1 + s) :
+      l + s - l * s;
+    var p = 2 * l - q;
+    r = hueToRgb(p, q, h + 1/3);
+    g = hueToRgb(p, q, h);
+    b = hueToRgb(p, q, h - 1/3);
+  }
+
+  return [~~(r * 255), ~~(g * 255), ~~(b * 255)];
+}
+
+function hueToRgb(p, q, t) {
+  if (t < 0) t += 1;
+  if (t > 1) t -= 1;
+  if (t < 1/6) return p + (q - p) * 6 * t;
+  if (t < 1/2) return q;
+  if (t < 2/3) return p + (q - p) * (2/3 - t) * 6;
+  return p;
+}
+
+HSLColor.prototype.toHex = function () {
+  var asRgb = hslToRgb(this.hue, this.saturation, this.lightness);
+  var redAsHex = asRgb[0].toString(16);
+  var greenAsHex = asRgb[1].toString(16);
+  var blueAsHex = asRgb[2].toString(16);
+
+  return '#' +
+    ((redAsHex.length == 1 ? '0' : '') + redAsHex) +
+    ((greenAsHex.length == 1 ? '0' : '') + greenAsHex) +
+    ((blueAsHex.length == 1 ? '0' : '') + blueAsHex);
+};
+
+module.exports = HSLColor;

node_modules/clean-css/lib/colors/rgb.js

@@ -0,0 +1,16 @@
+function RGB(red, green, blue) {
+  this.red = red;
+  this.green = green;
+  this.blue = blue;
+}
+
+RGB.prototype.toHex = function () {
+  var red = Math.max(0, Math.min(~~this.red, 255));
+  var green = Math.max(0, Math.min(~~this.green, 255));
+  var blue = Math.max(0, Math.min(~~this.blue, 255));
+
+  // Credit: Asen  http://jsbin.com/UPUmaGOc/2/edit?js,console
+  return '#' + ('00000' + (red << 16 | green << 8 | blue).toString(16)).slice(-6);
+};
+
+module.exports = RGB;

node_modules/clean-css/lib/imports/inliner.js

@@ -0,0 +1,399 @@
+var fs = require('fs');
+var path = require('path');
+var http = require('http');
+var https = require('https');
+var url = require('url');
+
+var rewriteUrls = require('../urls/rewrite');
+var split = require('../utils/split');
+var override = require('../utils/object.js').override;
+
+var MAP_MARKER = /\/\*# sourceMappingURL=(\S+) \*\//;
+var REMOTE_RESOURCE = /^(https?:)?\/\//;
+var NO_PROTOCOL_RESOURCE = /^\/\//;
+
+function ImportInliner (context) {
+  this.outerContext = context;
+}
+
+ImportInliner.prototype.process = function (data, context) {
+  var root = this.outerContext.options.root;
+
+  context = override(context, {
+    baseRelativeTo: this.outerContext.options.relativeTo || root,
+    debug: this.outerContext.options.debug,
+    done: [],
+    errors: this.outerContext.errors,
+    left: [],
+    inliner: this.outerContext.options.inliner,
+    rebase: this.outerContext.options.rebase,
+    relativeTo: this.outerContext.options.relativeTo || root,
+    root: root,
+    sourceReader: this.outerContext.sourceReader,
+    sourceTracker: this.outerContext.sourceTracker,
+    warnings: this.outerContext.warnings,
+    visited: []
+  });
+
+  return importFrom(data, context);
+};
+
+function importFrom(data, context) {
+  if (context.shallow) {
+    context.shallow = false;
+    context.done.push(data);
+    return processNext(context);
+  }
+
+  var nextStart = 0;
+  var nextEnd = 0;
+  var cursor = 0;
+  var isComment = commentScanner(data);
+
+  for (; nextEnd < data.length;) {
+    nextStart = nextImportAt(data, cursor);
+    if (nextStart == -1)
+      break;
+
+    if (isComment(nextStart)) {
+      cursor = nextStart + 1;
+      continue;
+    }
+
+    nextEnd = data.indexOf(';', nextStart);
+    if (nextEnd == -1) {
+      cursor = data.length;
+      data = '';
+      break;
+    }
+
+    var noImportPart = data.substring(0, nextStart);
+    context.done.push(noImportPart);
+    context.left.unshift([data.substring(nextEnd + 1), override(context, { shallow: false })]);
+    context.afterContent = hasContent(noImportPart);
+    return inline(data, nextStart, nextEnd, context);
+  }
+
+  // no @import matched in current data
+  context.done.push(data);
+  return processNext(context);
+}
+
+function rebaseMap(data, source) {
+  return data.replace(MAP_MARKER, function (match, sourceMapUrl) {
+    return REMOTE_RESOURCE.test(sourceMapUrl) ?
+      match :
+      match.replace(sourceMapUrl, url.resolve(source, sourceMapUrl));
+  });
+}
+
+function nextImportAt(data, cursor) {
+  var nextLowerCase = data.indexOf('@import', cursor);
+  var nextUpperCase = data.indexOf('@IMPORT', cursor);
+
+  if (nextLowerCase > -1 && nextUpperCase == -1)
+    return nextLowerCase;
+  else if (nextLowerCase == -1 && nextUpperCase > -1)
+    return nextUpperCase;
+  else
+    return Math.min(nextLowerCase, nextUpperCase);
+}
+
+function processNext(context) {
+  return context.left.length > 0 ?
+    importFrom.apply(null, context.left.shift()) :
+    context.whenDone(context.done.join(''));
+}
+
+function commentScanner(data) {
+  var commentRegex = /(\/\*(?!\*\/)[\s\S]*?\*\/)/;
+  var lastStartIndex = 0;
+  var lastEndIndex = 0;
+  var noComments = false;
+
+  // test whether an index is located within a comment
+  return function scanner(idx) {
+    var comment;
+    var localStartIndex = 0;
+    var localEndIndex = 0;
+    var globalStartIndex = 0;
+    var globalEndIndex = 0;
+
+    // return if we know there are no more comments
+    if (noComments)
+      return false;
+
+    do {
+      // idx can be still within last matched comment (many @import statements inside one comment)
+      if (idx > lastStartIndex && idx < lastEndIndex)
+        return true;
+
+      comment = data.match(commentRegex);
+
+      if (!comment) {
+        noComments = true;
+        return false;
+      }
+
+      // get the indexes relative to the current data chunk
+      lastStartIndex = localStartIndex = comment.index;
+      localEndIndex = localStartIndex + comment[0].length;
+
+      // calculate the indexes relative to the full original data
+      globalEndIndex = localEndIndex + lastEndIndex;
+      globalStartIndex = globalEndIndex - comment[0].length;
+
+      // chop off data up to and including current comment block
+      data = data.substring(localEndIndex);
+      lastEndIndex = globalEndIndex;
+    } while (globalEndIndex < idx);
+
+    return globalEndIndex > idx && idx > globalStartIndex;
+  };
+}
+
+function hasContent(data) {
+  var isComment = commentScanner(data);
+  var firstContentIdx = -1;
+  while (true) {
+    firstContentIdx = data.indexOf('{', firstContentIdx + 1);
+    if (firstContentIdx == -1 || !isComment(firstContentIdx))
+      break;
+  }
+
+  return firstContentIdx > -1;
+}
+
+function inline(data, nextStart, nextEnd, context) {
+  context.shallow = data.indexOf('@shallow') > 0;
+
+  var importDeclaration = data
+    .substring(nextImportAt(data, nextStart) + '@import'.length + 1, nextEnd)
+    .replace(/@shallow\)$/, ')')
+    .trim();
+
+  var viaUrl = importDeclaration.indexOf('url(') === 0;
+  var urlStartsAt = viaUrl ? 4 : 0;
+  var isQuoted = /^['"]/.exec(importDeclaration.substring(urlStartsAt, urlStartsAt + 2));
+  var urlEndsAt = isQuoted ?
+    importDeclaration.indexOf(isQuoted[0], urlStartsAt + 1) :
+    split(importDeclaration, ' ')[0].length - (viaUrl ? 1 : 0);
+
+  var importedFile = importDeclaration
+    .substring(urlStartsAt, urlEndsAt)
+    .replace(/['"]/g, '')
+    .replace(/\)$/, '')
+    .trim();
+
+  var mediaQuery = importDeclaration
+    .substring(urlEndsAt + 1)
+    .replace(/^\)/, '')
+    .trim();
+
+  var isRemote = context.isRemote || REMOTE_RESOURCE.test(importedFile);
+
+  if (isRemote && (context.localOnly || !allowedResource(importedFile, true, context.imports))) {
+    if (context.afterContent || hasContent(context.done.join('')))
+      context.warnings.push('Ignoring remote @import of "' + importedFile + '" as no callback given.');
+    else
+      restoreImport(importedFile, mediaQuery, context);
+
+    return processNext(context);
+  }
+
+  if (!isRemote && !allowedResource(importedFile, false, context.imports)) {
+    if (context.afterImport)
+      context.warnings.push('Ignoring local @import of "' + importedFile + '" as after other inlined content.');
+    else
+      restoreImport(importedFile, mediaQuery, context);
+    return processNext(context);
+  }
+
+  if (!isRemote && context.afterContent) {
+    context.warnings.push('Ignoring local @import of "' + importedFile + '" as after other CSS content.');
+    return processNext(context);
+  }
+
+  var method = isRemote ? inlineRemoteResource : inlineLocalResource;
+  return method(importedFile, mediaQuery, context);
+}
+
+function allowedResource(importedFile, isRemote, rules) {
+  if (rules.length === 0)
+    return false;
+
+  if (isRemote && NO_PROTOCOL_RESOURCE.test(importedFile))
+    importedFile = 'http:' + importedFile;
+
+  var match = isRemote ?
+    url.parse(importedFile).host :
+    importedFile;
+  var allowed = true;
+
+  for (var i = 0; i < rules.length; i++) {
+    var rule = rules[i];
+
+    if (rule == 'all')
+      allowed = true;
+    else if (isRemote && rule == 'local')
+      allowed = false;
+    else if (isRemote && rule == 'remote')
+      allowed = true;
+    else if (!isRemote && rule == 'remote')
+      allowed = false;
+    else if (!isRemote && rule == 'local')
+      allowed = true;
+    else if (rule[0] == '!' && rule.substring(1) === match)
+      allowed = false;
+  }
+
+  return allowed;
+}
+
+function inlineRemoteResource(importedFile, mediaQuery, context) {
+  var importedUrl = REMOTE_RESOURCE.test(importedFile) ?
+    importedFile :
+    url.resolve(context.relativeTo, importedFile);
+  var originalUrl = importedUrl;
+
+  if (NO_PROTOCOL_RESOURCE.test(importedUrl))
+    importedUrl = 'http:' + importedUrl;
+
+  if (context.visited.indexOf(importedUrl) > -1)
+    return processNext(context);
+
+
+  if (context.debug)
+    console.error('Inlining remote stylesheet: ' + importedUrl);
+
+  context.visited.push(importedUrl);
+
+  var proxyProtocol = context.inliner.request.protocol || context.inliner.request.hostname;
+  var get =
+    ((proxyProtocol && proxyProtocol.indexOf('https://') !== 0 ) ||
+     importedUrl.indexOf('http://') === 0) ?
+    http.get :
+    https.get;
+
+  var errorHandled = false;
+  function handleError(message) {
+    if (errorHandled)
+      return;
+
+    errorHandled = true;
+    context.errors.push('Broken @import declaration of "' + importedUrl + '" - ' + message);
+    restoreImport(importedUrl, mediaQuery, context);
+
+    process.nextTick(function () {
+      processNext(context);
+    });
+  }
+
+  var requestOptions = override(url.parse(importedUrl), context.inliner.request);
+  if (context.inliner.request.hostname !== undefined) {
+
+    //overwrite as we always expect a http proxy currently
+    requestOptions.protocol = context.inliner.request.protocol || 'http:';
+    requestOptions.path = requestOptions.href;
+  }
+
+
+  get(requestOptions, function (res) {
+    if (res.statusCode < 200 || res.statusCode > 399) {
+      return handleError('error ' + res.statusCode);
+    } else if (res.statusCode > 299) {
+      var movedUrl = url.resolve(importedUrl, res.headers.location);
+      return inlineRemoteResource(movedUrl, mediaQuery, context);
+    }
+
+    var chunks = [];
+    var parsedUrl = url.parse(importedUrl);
+    res.on('data', function (chunk) {
+      chunks.push(chunk.toString());
+    });
+    res.on('end', function () {
+      var importedData = chunks.join('');
+      if (context.rebase)
+        importedData = rewriteUrls(importedData, { toBase: originalUrl }, context);
+      context.sourceReader.trackSource(importedUrl, importedData);
+      importedData = context.sourceTracker.store(importedUrl, importedData);
+      importedData = rebaseMap(importedData, importedUrl);
+
+      if (mediaQuery.length > 0)
+        importedData = '@media ' + mediaQuery + '{' + importedData + '}';
+
+      context.afterImport = true;
+
+      var newContext = override(context, {
+        isRemote: true,
+        relativeTo: parsedUrl.protocol + '//' + parsedUrl.host + parsedUrl.pathname
+      });
+
+      process.nextTick(function () {
+        importFrom(importedData, newContext);
+      });
+    });
+  })
+  .on('error', function (res) {
+    handleError(res.message);
+  })
+  .on('timeout', function () {
+    handleError('timeout');
+  })
+  .setTimeout(context.inliner.timeout);
+}
+
+function inlineLocalResource(importedFile, mediaQuery, context) {
+  var relativeTo = importedFile[0] == '/' ?
+    context.root :
+    context.relativeTo;
+
+  var fullPath = path.resolve(path.join(relativeTo, importedFile));
+
+  if (!fs.existsSync(fullPath) || !fs.statSync(fullPath).isFile()) {
+    context.errors.push('Broken @import declaration of "' + importedFile + '"');
+    return processNext(context);
+  }
+
+  if (context.visited.indexOf(fullPath) > -1)
+    return processNext(context);
+
+
+  if (context.debug)
+    console.error('Inlining local stylesheet: ' + fullPath);
+
+  context.visited.push(fullPath);
+
+  var importRelativeTo = path.dirname(fullPath);
+  var importedData = fs.readFileSync(fullPath, 'utf8');
+  if (context.rebase) {
+    var rewriteOptions = {
+      relative: true,
+      fromBase: importRelativeTo,
+      toBase: context.baseRelativeTo
+    };
+    importedData = rewriteUrls(importedData, rewriteOptions, context);
+  }
+
+  var relativePath = path.relative(context.root, fullPath);
+  context.sourceReader.trackSource(relativePath, importedData);
+  importedData = context.sourceTracker.store(relativePath, importedData);
+
+  if (mediaQuery.length > 0)
+    importedData = '@media ' + mediaQuery + '{' + importedData + '}';
+
+  context.afterImport = true;
+
+  var newContext = override(context, {
+    relativeTo: importRelativeTo
+  });
+
+  return importFrom(importedData, newContext);
+}
+
+function restoreImport(importedUrl, mediaQuery, context) {
+  var restoredImport = '@import url(' + importedUrl + ')' + (mediaQuery.length > 0 ? ' ' + mediaQuery : '') + ';';
+  context.done.push(restoredImport);
+}
+
+module.exports = ImportInliner;

node_modules/clean-css/lib/properties/break-up.js

@@ -0,0 +1,335 @@
+var wrapSingle = require('./wrap-for-optimizing').single;
+var InvalidPropertyError = require('./invalid-property-error');
+
+var split = require('../utils/split');
+var MULTIPLEX_SEPARATOR = ',';
+
+function _colorFilter(validator) {
+  return function (value) {
+    return value[0] == 'invert' || validator.isValidColor(value[0]);
+  };
+}
+
+function _styleFilter(validator) {
+  return function (value) {
+    return value[0] != 'inherit' && validator.isValidStyle(value[0]) && !validator.isValidColorValue(value[0]);
+  };
+}
+
+function _wrapDefault(name, property, compactable) {
+  var descriptor = compactable[name];
+  if (descriptor.doubleValues && descriptor.defaultValue.length == 2)
+    return wrapSingle([[name, property.important], [descriptor.defaultValue[0]], [descriptor.defaultValue[1]]]);
+  else if (descriptor.doubleValues && descriptor.defaultValue.length == 1)
+    return wrapSingle([[name, property.important], [descriptor.defaultValue[0]]]);
+  else
+    return wrapSingle([[name, property.important], [descriptor.defaultValue]]);
+}
+
+function _widthFilter(validator) {
+  return function (value) {
+    return value[0] != 'inherit' && validator.isValidWidth(value[0]) && !validator.isValidStyleKeyword(value[0]) && !validator.isValidColorValue(value[0]);
+  };
+}
+
+function background(property, compactable, validator) {
+  var image = _wrapDefault('background-image', property, compactable);
+  var position = _wrapDefault('background-position', property, compactable);
+  var size = _wrapDefault('background-size', property, compactable);
+  var repeat = _wrapDefault('background-repeat', property, compactable);
+  var attachment = _wrapDefault('background-attachment', property, compactable);
+  var origin = _wrapDefault('background-origin', property, compactable);
+  var clip = _wrapDefault('background-clip', property, compactable);
+  var color = _wrapDefault('background-color', property, compactable);
+  var components = [image, position, size, repeat, attachment, origin, clip, color];
+  var values = property.value;
+
+  var positionSet = false;
+  var clipSet = false;
+  var originSet = false;
+  var repeatSet = false;
+
+  if (property.value.length == 1 && property.value[0][0] == 'inherit') {
+    // NOTE: 'inherit' is not a valid value for background-attachment
+    color.value = image.value =  repeat.value = position.value = size.value = origin.value = clip.value = property.value;
+    return components;
+  }
+
+  for (var i = values.length - 1; i >= 0; i--) {
+    var value = values[i];
+
+    if (validator.isValidBackgroundAttachment(value[0])) {
+      attachment.value = [value];
+    } else if (validator.isValidBackgroundBox(value[0])) {
+      if (clipSet) {
+        origin.value = [value];
+        originSet = true;
+      } else {
+        clip.value = [value];
+        clipSet = true;
+      }
+    } else if (validator.isValidBackgroundRepeat(value[0])) {
+      if (repeatSet) {
+        repeat.value.unshift(value);
+      } else {
+        repeat.value = [value];
+        repeatSet = true;
+      }
+    } else if (validator.isValidBackgroundPositionPart(value[0]) || validator.isValidBackgroundSizePart(value[0])) {
+      if (i > 0) {
+        var previousValue = values[i - 1];
+
+        if (previousValue[0].indexOf('/') > 0) {
+          var twoParts = split(previousValue[0], '/');
+          // NOTE: we do this slicing as value may contain metadata too, like for source maps
+          size.value = [[twoParts.pop()].concat(previousValue.slice(1)), value];
+          values[i - 1] = [twoParts.pop()].concat(previousValue.slice(1));
+        } else if (i > 1 && values[i - 2][0] == '/') {
+          size.value = [previousValue, value];
+          i -= 2;
+        } else if (previousValue[0] == '/') {
+          size.value = [value];
+        } else {
+          if (!positionSet)
+            position.value = [];
+
+          position.value.unshift(value);
+          positionSet = true;
+        }
+      } else {
+        if (!positionSet)
+          position.value = [];
+
+        position.value.unshift(value);
+        positionSet = true;
+      }
+    } else if (validator.isValidBackgroundPositionAndSize(value[0])) {
+      var sizeValue = split(value[0], '/');
+      // NOTE: we do this slicing as value may contain metadata too, like for source maps
+      size.value = [[sizeValue.pop()].concat(value.slice(1))];
+      position.value = [[sizeValue.pop()].concat(value.slice(1))];
+    } else if ((color.value[0][0] == compactable[color.name].defaultValue || color.value[0][0] == 'none') && validator.isValidColor(value[0])) {
+      color.value = [value];
+    } else if (validator.isValidUrl(value[0]) || validator.isValidFunction(value[0])) {
+      image.value = [value];
+    }
+  }
+
+  if (clipSet && !originSet)
+    origin.value = clip.value.slice(0);
+
+  return components;
+}
+
+function borderRadius(property, compactable) {
+  var values = property.value;
+  var splitAt = -1;
+
+  for (var i = 0, l = values.length; i < l; i++) {
+    if (values[i][0] == '/') {
+      splitAt = i;
+      break;
+    }
+  }
+
+  if (splitAt === 0 || splitAt === values.length - 1) {
+    throw new InvalidPropertyError('Invalid border-radius value.');
+  }
+
+  var target = _wrapDefault(property.name, property, compactable);
+  target.value = splitAt > -1 ?
+    values.slice(0, splitAt) :
+    values.slice(0);
+  target.components = fourValues(target, compactable);
+
+  var remainder = _wrapDefault(property.name, property, compactable);
+  remainder.value = splitAt > -1 ?
+    values.slice(splitAt + 1) :
+    values.slice(0);
+  remainder.components = fourValues(remainder, compactable);
+
+  for (var j = 0; j < 4; j++) {
+    target.components[j].multiplex = true;
+    target.components[j].value = target.components[j].value.concat(remainder.components[j].value);
+  }
+
+  return target.components;
+}
+
+function fourValues(property, compactable) {
+  var componentNames = compactable[property.name].components;
+  var components = [];
+  var value = property.value;
+
+  if (value.length < 1)
+    return [];
+
+  if (value.length < 2)
+    value[1] = value[0].slice(0);
+  if (value.length < 3)
+    value[2] = value[0].slice(0);
+  if (value.length < 4)
+    value[3] = value[1].slice(0);
+
+  for (var i = componentNames.length - 1; i >= 0; i--) {
+    var component = wrapSingle([[componentNames[i], property.important]]);
+    component.value = [value[i]];
+    components.unshift(component);
+  }
+
+  return components;
+}
+
+function multiplex(splitWith) {
+  return function (property, compactable, validator) {
+    var splitsAt = [];
+    var values = property.value;
+    var i, j, l, m;
+
+    // find split commas
+    for (i = 0, l = values.length; i < l; i++) {
+      if (values[i][0] == ',')
+        splitsAt.push(i);
+    }
+
+    if (splitsAt.length === 0)
+      return splitWith(property, compactable, validator);
+
+    var splitComponents = [];
+
+    // split over commas, and into components
+    for (i = 0, l = splitsAt.length; i <= l; i++) {
+      var from = i === 0 ? 0 : splitsAt[i - 1] + 1;
+      var to = i < l ? splitsAt[i] : values.length;
+
+      var _property = _wrapDefault(property.name, property, compactable);
+      _property.value = values.slice(from, to);
+
+      splitComponents.push(splitWith(_property, compactable, validator));
+    }
+
+    var components = splitComponents[0];
+
+    // group component values from each split
+    for (i = 0, l = components.length; i < l; i++) {
+      components[i].multiplex = true;
+
+      for (j = 1, m = splitComponents.length; j < m; j++) {
+        components[i].value.push([MULTIPLEX_SEPARATOR]);
+        Array.prototype.push.apply(components[i].value, splitComponents[j][i].value);
+      }
+    }
+
+    return components;
+  };
+}
+
+function listStyle(property, compactable, validator) {
+  var type = _wrapDefault('list-style-type', property, compactable);
+  var position = _wrapDefault('list-style-position', property, compactable);
+  var image = _wrapDefault('list-style-image', property, compactable);
+  var components = [type, position, image];
+
+  if (property.value.length == 1 && property.value[0][0] == 'inherit') {
+    type.value = position.value = image.value = [property.value[0]];
+    return components;
+  }
+
+  var values = property.value.slice(0);
+  var total = values.length;
+  var index = 0;
+
+  // `image` first...
+  for (index = 0, total = values.length; index < total; index++) {
+    if (validator.isValidUrl(values[index][0]) || values[index][0] == '0') {
+      image.value = [values[index]];
+      values.splice(index, 1);
+      break;
+    }
+  }
+
+  // ... then `type`...
+  for (index = 0, total = values.length; index < total; index++) {
+    if (validator.isValidListStyleType(values[index][0])) {
+      type.value = [values[index]];
+      values.splice(index, 1);
+      break;
+    }
+  }
+
+  // ... and what's left is a `position`
+  if (values.length > 0 && validator.isValidListStylePosition(values[0][0]))
+    position.value = [values[0]];
+
+  return components;
+}
+
+function widthStyleColor(property, compactable, validator) {
+  var descriptor = compactable[property.name];
+  var components = [
+    _wrapDefault(descriptor.components[0], property, compactable),
+    _wrapDefault(descriptor.components[1], property, compactable),
+    _wrapDefault(descriptor.components[2], property, compactable)
+  ];
+  var color, style, width;
+
+  for (var i = 0; i < 3; i++) {
+    var component = components[i];
+
+    if (component.name.indexOf('color') > 0)
+      color = component;
+    else if (component.name.indexOf('style') > 0)
+      style = component;
+    else
+      width = component;
+  }
+
+  if ((property.value.length == 1 && property.value[0][0] == 'inherit') ||
+      (property.value.length == 3 && property.value[0][0] == 'inherit' && property.value[1][0] == 'inherit' && property.value[2][0] == 'inherit')) {
+    color.value = style.value = width.value = [property.value[0]];
+    return components;
+  }
+
+  var values = property.value.slice(0);
+  var match, matches;
+
+  // NOTE: usually users don't follow the required order of parts in this shorthand,
+  // so we'll try to parse it caring as little about order as possible
+
+  if (values.length > 0) {
+    matches = values.filter(_widthFilter(validator));
+    match = matches.length > 1 && (matches[0][0] == 'none' || matches[0][0] == 'auto') ? matches[1] : matches[0];
+    if (match) {
+      width.value = [match];
+      values.splice(values.indexOf(match), 1);
+    }
+  }
+
+  if (values.length > 0) {
+    match = values.filter(_styleFilter(validator))[0];
+    if (match) {
+      style.value = [match];
+      values.splice(values.indexOf(match), 1);
+    }
+  }
+
+  if (values.length > 0) {
+    match = values.filter(_colorFilter(validator))[0];
+    if (match) {
+      color.value = [match];
+      values.splice(values.indexOf(match), 1);
+    }
+  }
+
+  return components;
+}
+
+module.exports = {
+  background: background,
+  border: widthStyleColor,
+  borderRadius: borderRadius,
+  fourValues: fourValues,
+  listStyle: listStyle,
+  multiplex: multiplex,
+  outline: widthStyleColor
+};

node_modules/clean-css/lib/properties/can-override.js

@@ -0,0 +1,142 @@
+// Functions that decide what value can override what.
+// The main purpose is to disallow removing CSS fallbacks.
+// A separate implementation is needed for every different kind of CSS property.
+// -----
+// The generic idea is that properties that have wider browser support are 'more understandable'
+// than others and that 'less understandable' values can't override more understandable ones.
+
+// Use when two tokens of the same property can always be merged
+function always() {
+  return true;
+}
+
+function alwaysButIntoFunction(property1, property2, validator) {
+  var value1 = property1.value[0][0];
+  var value2 = property2.value[0][0];
+
+  var validFunction1 = validator.isValidFunction(value1);
+  var validFunction2 = validator.isValidFunction(value2);
+
+  if (validFunction1 && validFunction2) {
+    return validator.areSameFunction(value1, value2);
+  } else if (!validFunction1 && validFunction2) {
+    return false;
+  } else {
+    return true;
+  }
+}
+
+function backgroundImage(property1, property2, validator) {
+  // The idea here is that 'more understandable' values override 'less understandable' values, but not vice versa
+  // Understandability: (none | url | inherit) > (same function) > (same value)
+
+  // (none | url)
+  var image1 = property1.value[0][0];
+  var image2 = property2.value[0][0];
+
+  if (image2 == 'none' || image2 == 'inherit' || validator.isValidUrl(image2))
+    return true;
+  if (image1 == 'none' || image1 == 'inherit' || validator.isValidUrl(image1))
+    return false;
+
+  // Functions with the same name can override each other; same values can override each other
+  return sameFunctionOrValue(property1, property2, validator);
+}
+
+function border(property1, property2, validator) {
+  return color(property1.components[2], property2.components[2], validator);
+}
+
+// Use for color properties (color, background-color, border-color, etc.)
+function color(property1, property2, validator) {
+  // The idea here is that 'more understandable' values override 'less understandable' values, but not vice versa
+  // Understandability: (hex | named) > (rgba | hsla) > (same function name) > anything else
+  // NOTE: at this point rgb and hsl are replaced by hex values by clean-css
+
+  var color1 = property1.value[0][0];
+  var color2 = property2.value[0][0];
+
+  if (!validator.colorOpacity && (validator.isValidRgbaColor(color1) || validator.isValidHslaColor(color1)))
+    return false;
+  if (!validator.colorOpacity && (validator.isValidRgbaColor(color2) || validator.isValidHslaColor(color2)))
+    return false;
+
+  // (hex | named)
+  if (validator.isValidNamedColor(color2) || validator.isValidHexColor(color2))
+    return true;
+  if (validator.isValidNamedColor(color1) || validator.isValidHexColor(color1))
+    return false;
+
+  // (rgba|hsla)
+  if (validator.isValidRgbaColor(color2) || validator.isValidHslaColor(color2))
+    return true;
+  if (validator.isValidRgbaColor(color1) || validator.isValidHslaColor(color1))
+    return false;
+
+  // Functions with the same name can override each other; same values can override each other
+  return sameFunctionOrValue(property1, property2, validator);
+}
+
+function twoOptionalFunctions(property1, property2, validator) {
+  var value1 = property1.value[0][0];
+  var value2 = property2.value[0][0];
+
+  return !(validator.isValidFunction(value1) ^ validator.isValidFunction(value2));
+}
+
+function sameValue(property1, property2) {
+  var value1 = property1.value[0][0];
+  var value2 = property2.value[0][0];
+
+  return value1 === value2;
+}
+
+function sameFunctionOrValue(property1, property2, validator) {
+  var value1 = property1.value[0][0];
+  var value2 = property2.value[0][0];
+
+  // Functions with the same name can override each other
+  if (validator.areSameFunction(value1, value2))
+    return true;
+
+  return value1 === value2;
+}
+
+// Use for properties containing CSS units (margin-top, padding-left, etc.)
+function unit(property1, property2, validator) {
+  // The idea here is that 'more understandable' values override 'less understandable' values, but not vice versa
+  // Understandability: (unit without functions) > (same functions | standard functions) > anything else
+  // NOTE: there is no point in having different vendor-specific functions override each other or standard functions,
+  //       or having standard functions override vendor-specific functions, but standard functions can override each other
+  // NOTE: vendor-specific property values are not taken into consideration here at the moment
+  var value1 = property1.value[0][0];
+  var value2 = property2.value[0][0];
+
+  if (validator.isValidAndCompatibleUnitWithoutFunction(value1) && !validator.isValidAndCompatibleUnitWithoutFunction(value2))
+    return false;
+
+  if (validator.isValidUnitWithoutFunction(value2))
+    return true;
+  if (validator.isValidUnitWithoutFunction(value1))
+    return false;
+
+  // Standard non-vendor-prefixed functions can override each other
+  if (validator.isValidFunctionWithoutVendorPrefix(value2) && validator.isValidFunctionWithoutVendorPrefix(value1)) {
+    return true;
+  }
+
+  // Functions with the same name can override each other; same values can override each other
+  return sameFunctionOrValue(property1, property2, validator);
+}
+
+module.exports = {
+  always: always,
+  alwaysButIntoFunction: alwaysButIntoFunction,
+  backgroundImage: backgroundImage,
+  border: border,
+  color: color,
+  sameValue: sameValue,
+  sameFunctionOrValue: sameFunctionOrValue,
+  twoOptionalFunctions: twoOptionalFunctions,
+  unit: unit
+};

node_modules/clean-css/lib/properties/clone.js

@@ -0,0 +1,26 @@
+var wrapSingle = require('./wrap-for-optimizing').single;
+
+function deep(property) {
+  var cloned = shallow(property);
+  for (var i = property.components.length - 1; i >= 0; i--) {
+    var component = shallow(property.components[i]);
+    component.value = property.components[i].value.slice(0);
+    cloned.components.unshift(component);
+  }
+
+  cloned.dirty = true;
+  cloned.value = property.value.slice(0);
+
+  return cloned;
+}
+
+function shallow(property) {
+  var cloned = wrapSingle([[property.name, property.important, property.hack]]);
+  cloned.unused = false;
+  return cloned;
+}
+
+module.exports = {
+  deep: deep,
+  shallow: shallow
+};

node_modules/clean-css/lib/properties/compactable.js

@@ -0,0 +1,285 @@
+// Contains the interpretation of CSS properties, as used by the property optimizer
+
+var breakUp = require('./break-up');
+var canOverride = require('./can-override');
+var restore = require('./restore');
+
+// Properties to process
+// Extend this object in order to add support for more properties in the optimizer.
+//
+// Each key in this object represents a CSS property and should be an object.
+// Such an object contains properties that describe how the represented CSS property should be handled.
+// Possible options:
+//
+// * components: array (Only specify for shorthand properties.)
+//   Contains the names of the granular properties this shorthand compacts.
+//
+// * canOverride: function (Default is canOverride.sameValue - meaning that they'll only be merged if they have the same value.)
+//   Returns whether two tokens of this property can be merged with each other.
+//   This property has no meaning for shorthands.
+//
+// * defaultValue: string
+//   Specifies the default value of the property according to the CSS standard.
+//   For shorthand, this is used when every component is set to its default value, therefore it should be the shortest possible default value of all the components.
+//
+// * shortestValue: string
+//   Specifies the shortest possible value the property can possibly have.
+//   (Falls back to defaultValue if unspecified.)
+//
+// * breakUp: function (Only specify for shorthand properties.)
+//   Breaks the shorthand up to its components.
+//
+// * restore: function (Only specify for shorthand properties.)
+//   Puts the shorthand together from its components.
+//
+var compactable = {
+  'color': {
+    canOverride: canOverride.color,
+    defaultValue: 'transparent',
+    shortestValue: 'red'
+  },
+  'background': {
+    components: [
+      'background-image',
+      'background-position',
+      'background-size',
+      'background-repeat',
+      'background-attachment',
+      'background-origin',
+      'background-clip',
+      'background-color'
+    ],
+    breakUp: breakUp.multiplex(breakUp.background),
+    defaultValue: '0 0',
+    restore: restore.multiplex(restore.background),
+    shortestValue: '0',
+    shorthand: true
+  },
+  'background-clip': {
+    canOverride: canOverride.always,
+    defaultValue: 'border-box',
+    shortestValue: 'border-box'
+  },
+  'background-color': {
+    canOverride: canOverride.color,
+    defaultValue: 'transparent',
+    multiplexLastOnly: true,
+    nonMergeableValue: 'none',
+    shortestValue: 'red'
+  },
+  'background-image': {
+    canOverride: canOverride.backgroundImage,
+    defaultValue: 'none'
+  },
+  'background-origin': {
+    canOverride: canOverride.always,
+    defaultValue: 'padding-box',
+    shortestValue: 'border-box'
+  },
+  'background-repeat': {
+    canOverride: canOverride.always,
+    defaultValue: ['repeat'],
+    doubleValues: true
+  },
+  'background-position': {
+    canOverride: canOverride.alwaysButIntoFunction,
+    defaultValue: ['0', '0'],
+    doubleValues: true,
+    shortestValue: '0'
+  },
+  'background-size': {
+    canOverride: canOverride.alwaysButIntoFunction,
+    defaultValue: ['auto'],
+    doubleValues: true,
+    shortestValue: '0 0'
+  },
+  'background-attachment': {
+    canOverride: canOverride.always,
+    defaultValue: 'scroll'
+  },
+  'border': {
+    breakUp: breakUp.border,
+    canOverride: canOverride.border,
+    components: [
+      'border-width',
+      'border-style',
+      'border-color'
+    ],
+    defaultValue: 'none',
+    restore: restore.withoutDefaults,
+    shorthand: true
+  },
+  'border-color': {
+    canOverride: canOverride.color,
+    defaultValue: 'none',
+    shorthand: true
+  },
+  'border-style': {
+    canOverride: canOverride.always,
+    defaultValue: 'none',
+    shorthand: true
+  },
+  'border-width': {
+    canOverride: canOverride.unit,
+    defaultValue: 'medium',
+    shortestValue: '0',
+    shorthand: true
+  },
+  'list-style': {
+    components: [
+      'list-style-type',
+      'list-style-position',
+      'list-style-image'
+    ],
+    canOverride: canOverride.always,
+    breakUp: breakUp.listStyle,
+    restore: restore.withoutDefaults,
+    defaultValue: 'outside', // can't use 'disc' because that'd override default 'decimal' for <ol>
+    shortestValue: 'none',
+    shorthand: true
+  },
+  'list-style-type' : {
+    canOverride: canOverride.always,
+    defaultValue: '__hack',
+    // NOTE: we can't tell the real default value here, it's 'disc' for <ul> and 'decimal' for <ol>
+    //       -- this is a hack, but it doesn't matter because this value will be either overridden or it will disappear at the final step anyway
+    shortestValue: 'none'
+  },
+  'list-style-position' : {
+    canOverride: canOverride.always,
+    defaultValue: 'outside',
+    shortestValue: 'inside'
+  },
+  'list-style-image' : {
+    canOverride: canOverride.always,
+    defaultValue: 'none'
+  },
+  'outline': {
+    components: [
+      'outline-color',
+      'outline-style',
+      'outline-width'
+    ],
+    breakUp: breakUp.outline,
+    restore: restore.withoutDefaults,
+    defaultValue: '0',
+    shorthand: true
+  },
+  'outline-color': {
+    canOverride: canOverride.color,
+    defaultValue: 'invert',
+    shortestValue: 'red'
+  },
+  'outline-style': {
+    canOverride: canOverride.always,
+    defaultValue: 'none'
+  },
+  'outline-width': {
+    canOverride: canOverride.unit,
+    defaultValue: 'medium',
+    shortestValue: '0'
+  },
+  '-moz-transform': {
+    canOverride: canOverride.sameFunctionOrValue
+  },
+  '-ms-transform': {
+    canOverride: canOverride.sameFunctionOrValue
+  },
+  '-webkit-transform': {
+    canOverride: canOverride.sameFunctionOrValue
+  },
+  'transform': {
+    canOverride: canOverride.sameFunctionOrValue
+  }
+};
+
+var addFourValueShorthand = function (prop, components, options) {
+  options = options || {};
+  compactable[prop] = {
+    canOverride: options.canOverride,
+    components: components,
+    breakUp: options.breakUp || breakUp.fourValues,
+    defaultValue: options.defaultValue || '0',
+    restore: options.restore || restore.fourValues,
+    shortestValue: options.shortestValue,
+    shorthand: true
+  };
+  for (var i = 0; i < components.length; i++) {
+    compactable[components[i]] = {
+      breakUp: options.breakUp || breakUp.fourValues,
+      canOverride: options.canOverride || canOverride.unit,
+      defaultValue: options.defaultValue || '0',
+      shortestValue: options.shortestValue
+    };
+  }
+};
+
+['', '-moz-', '-o-', '-webkit-'].forEach(function (prefix) {
+  addFourValueShorthand(prefix + 'border-radius', [
+    prefix + 'border-top-left-radius',
+    prefix + 'border-top-right-radius',
+    prefix + 'border-bottom-right-radius',
+    prefix + 'border-bottom-left-radius'
+  ], {
+    breakUp: breakUp.borderRadius,
+    restore: restore.borderRadius
+  });
+});
+
+addFourValueShorthand('border-color', [
+  'border-top-color',
+  'border-right-color',
+  'border-bottom-color',
+  'border-left-color'
+], {
+  breakUp: breakUp.fourValues,
+  canOverride: canOverride.color,
+  defaultValue: 'none',
+  shortestValue: 'red'
+});
+
+addFourValueShorthand('border-style', [
+  'border-top-style',
+  'border-right-style',
+  'border-bottom-style',
+  'border-left-style'
+], {
+  breakUp: breakUp.fourValues,
+  canOverride: canOverride.always,
+  defaultValue: 'none'
+});
+
+addFourValueShorthand('border-width', [
+  'border-top-width',
+  'border-right-width',
+  'border-bottom-width',
+  'border-left-width'
+], {
+  defaultValue: 'medium',
+  shortestValue: '0'
+});
+
+addFourValueShorthand('padding', [
+  'padding-top',
+  'padding-right',
+  'padding-bottom',
+  'padding-left'
+]);
+
+addFourValueShorthand('margin', [
+  'margin-top',
+  'margin-right',
+  'margin-bottom',
+  'margin-left'
+]);
+
+// Adds `componentOf` field to all longhands
+for (var property in compactable) {
+  if (compactable[property].shorthand) {
+    for (var i = 0, l = compactable[property].components.length; i < l; i++) {
+      compactable[compactable[property].components[i]].componentOf = property;
+    }
+  }
+}
+
+module.exports = compactable;

node_modules/clean-css/lib/properties/every-combination.js

@@ -0,0 +1,28 @@
+var shallowClone = require('./clone').shallow;
+
+var MULTIPLEX_SEPARATOR = ',';
+
+function everyCombination(fn, left, right, validator) {
+  var samePositon = !left.shorthand && !right.shorthand && !left.multiplex && !right.multiplex;
+  var _left = shallowClone(left);
+  var _right = shallowClone(right);
+
+  for (var i = 0, l = left.value.length; i < l; i++) {
+    for (var j = 0, m = right.value.length; j < m; j++) {
+      if (left.value[i][0] == MULTIPLEX_SEPARATOR || right.value[j][0] == MULTIPLEX_SEPARATOR)
+        continue;
+
+      if (samePositon && i != j)
+        continue;
+
+      _left.value = [left.value[i]];
+      _right.value = [right.value[j]];
+      if (!fn(_left, _right, validator))
+        return false;
+    }
+  }
+
+  return true;
+}
+
+module.exports = everyCombination;

node_modules/clean-css/lib/properties/has-inherit.js

@@ -0,0 +1,10 @@
+function hasInherit(property) {
+  for (var i = property.value.length - 1; i >= 0; i--) {
+    if (property.value[i][0] == 'inherit')
+      return true;
+  }
+
+  return false;
+}
+
+module.exports = hasInherit;

node_modules/clean-css/lib/properties/invalid-property-error.js

@@ -0,0 +1,10 @@
+function InvalidPropertyError(message) {
+  this.name = 'InvalidPropertyError';
+  this.message = message;
+  this.stack = (new Error()).stack;
+}
+
+InvalidPropertyError.prototype = Object.create(Error.prototype);
+InvalidPropertyError.prototype.constructor = InvalidPropertyError;
+
+module.exports = InvalidPropertyError;

node_modules/clean-css/lib/properties/optimizer.js

@@ -0,0 +1,215 @@
+var compactable = require('./compactable');
+var wrapForOptimizing = require('./wrap-for-optimizing').all;
+var populateComponents = require('./populate-components');
+var compactOverrides = require('./override-compactor');
+var compactShorthands = require('./shorthand-compactor');
+var removeUnused = require('./remove-unused');
+var restoreFromOptimizing = require('./restore-from-optimizing');
+var stringifyProperty = require('../stringifier/one-time').property;
+
+var shorthands = {
+  'animation-delay': ['animation'],
+  'animation-direction': ['animation'],
+  'animation-duration': ['animation'],
+  'animation-fill-mode': ['animation'],
+  'animation-iteration-count': ['animation'],
+  'animation-name': ['animation'],
+  'animation-play-state': ['animation'],
+  'animation-timing-function': ['animation'],
+  '-moz-animation-delay': ['-moz-animation'],
+  '-moz-animation-direction': ['-moz-animation'],
+  '-moz-animation-duration': ['-moz-animation'],
+  '-moz-animation-fill-mode': ['-moz-animation'],
+  '-moz-animation-iteration-count': ['-moz-animation'],
+  '-moz-animation-name': ['-moz-animation'],
+  '-moz-animation-play-state': ['-moz-animation'],
+  '-moz-animation-timing-function': ['-moz-animation'],
+  '-o-animation-delay': ['-o-animation'],
+  '-o-animation-direction': ['-o-animation'],
+  '-o-animation-duration': ['-o-animation'],
+  '-o-animation-fill-mode': ['-o-animation'],
+  '-o-animation-iteration-count': ['-o-animation'],
+  '-o-animation-name': ['-o-animation'],
+  '-o-animation-play-state': ['-o-animation'],
+  '-o-animation-timing-function': ['-o-animation'],
+  '-webkit-animation-delay': ['-webkit-animation'],
+  '-webkit-animation-direction': ['-webkit-animation'],
+  '-webkit-animation-duration': ['-webkit-animation'],
+  '-webkit-animation-fill-mode': ['-webkit-animation'],
+  '-webkit-animation-iteration-count': ['-webkit-animation'],
+  '-webkit-animation-name': ['-webkit-animation'],
+  '-webkit-animation-play-state': ['-webkit-animation'],
+  '-webkit-animation-timing-function': ['-webkit-animation'],
+  'border-color': ['border'],
+  'border-style': ['border'],
+  'border-width': ['border'],
+  'border-bottom': ['border'],
+  'border-bottom-color': ['border-bottom', 'border-color', 'border'],
+  'border-bottom-style': ['border-bottom', 'border-style', 'border'],
+  'border-bottom-width': ['border-bottom', 'border-width', 'border'],
+  'border-left': ['border'],
+  'border-left-color': ['border-left', 'border-color', 'border'],
+  'border-left-style': ['border-left', 'border-style', 'border'],
+  'border-left-width': ['border-left', 'border-width', 'border'],
+  'border-right': ['border'],
+  'border-right-color': ['border-right', 'border-color', 'border'],
+  'border-right-style': ['border-right', 'border-style', 'border'],
+  'border-right-width': ['border-right', 'border-width', 'border'],
+  'border-top': ['border'],
+  'border-top-color': ['border-top', 'border-color', 'border'],
+  'border-top-style': ['border-top', 'border-style', 'border'],
+  'border-top-width': ['border-top', 'border-width', 'border'],
+  'font-family': ['font'],
+  'font-size': ['font'],
+  'font-style': ['font'],
+  'font-variant': ['font'],
+  'font-weight': ['font'],
+  'transition-delay': ['transition'],
+  'transition-duration': ['transition'],
+  'transition-property': ['transition'],
+  'transition-timing-function': ['transition'],
+  '-moz-transition-delay': ['-moz-transition'],
+  '-moz-transition-duration': ['-moz-transition'],
+  '-moz-transition-property': ['-moz-transition'],
+  '-moz-transition-timing-function': ['-moz-transition'],
+  '-o-transition-delay': ['-o-transition'],
+  '-o-transition-duration': ['-o-transition'],
+  '-o-transition-property': ['-o-transition'],
+  '-o-transition-timing-function': ['-o-transition'],
+  '-webkit-transition-delay': ['-webkit-transition'],
+  '-webkit-transition-duration': ['-webkit-transition'],
+  '-webkit-transition-property': ['-webkit-transition'],
+  '-webkit-transition-timing-function': ['-webkit-transition']
+};
+
+function _optimize(properties, mergeAdjacent, aggressiveMerging, validator) {
+  var overrideMapping = {};
+  var lastName = null;
+  var lastProperty;
+  var j;
+
+  function mergeablePosition(position) {
+    if (mergeAdjacent === false || mergeAdjacent === true)
+      return mergeAdjacent;
+
+    return mergeAdjacent.indexOf(position) > -1;
+  }
+
+  function sameValue(position) {
+    var left = properties[position - 1];
+    var right = properties[position];
+
+    return stringifyProperty(left.all, left.position) == stringifyProperty(right.all, right.position);
+  }
+
+  propertyLoop:
+  for (var position = 0, total = properties.length; position < total; position++) {
+    var property = properties[position];
+    var _name = (property.name == '-ms-filter' || property.name == 'filter') ?
+      (lastName == 'background' || lastName == 'background-image' ? lastName : property.name) :
+      property.name;
+    var isImportant = property.important;
+    var isHack = property.hack;
+
+    if (property.unused)
+      continue;
+
+    if (position > 0 && lastProperty && _name == lastName && isImportant == lastProperty.important && isHack == lastProperty.hack && sameValue(position) && !lastProperty.unused) {
+      property.unused = true;
+      continue;
+    }
+
+    // comment is necessary - we assume that if two properties are one after another
+    // then it is intentional way of redefining property which may not be widely supported
+    // e.g. a{display:inline-block;display:-moz-inline-box}
+    // however if `mergeablePosition` yields true then the rule does not apply
+    // (e.g merging two adjacent selectors: `a{display:block}a{display:block}`)
+    if (_name in overrideMapping && (aggressiveMerging && _name != lastName || mergeablePosition(position))) {
+      var toOverridePositions = overrideMapping[_name];
+      var canOverride = compactable[_name] && compactable[_name].canOverride;
+      var anyRemoved = false;
+
+      for (j = toOverridePositions.length - 1; j >= 0; j--) {
+        var toRemove = properties[toOverridePositions[j]];
+        var longhandToShorthand = toRemove.name != _name;
+        var wasImportant = toRemove.important;
+        var wasHack = toRemove.hack;
+
+        if (toRemove.unused)
+          continue;
+
+        if (longhandToShorthand && wasImportant)
+          continue;
+
+        if (!wasImportant && (wasHack && !isHack || !wasHack && isHack))
+          continue;
+
+        if (wasImportant && (isHack == 'star' || isHack == 'underscore'))
+          continue;
+
+        if (!wasHack && !isHack && !longhandToShorthand && canOverride && !canOverride(toRemove, property, validator))
+          continue;
+
+        if (wasImportant && !isImportant || wasImportant && isHack) {
+          property.unused = true;
+          lastProperty = property;
+          continue propertyLoop;
+        } else {
+          anyRemoved = true;
+          toRemove.unused = true;
+        }
+      }
+
+      if (anyRemoved) {
+        position = -1;
+        lastProperty = null;
+        lastName = null;
+        overrideMapping = {};
+        continue;
+      }
+    } else {
+      overrideMapping[_name] = overrideMapping[_name] || [];
+      overrideMapping[_name].push(position);
+
+      // TODO: to be removed with
+      // certain shorthand (see values of `shorthands`) should trigger removal of
+      // longhand properties (see keys of `shorthands`)
+      var _shorthands = shorthands[_name];
+      if (_shorthands) {
+        for (j = _shorthands.length - 1; j >= 0; j--) {
+          var shorthand = _shorthands[j];
+          overrideMapping[shorthand] = overrideMapping[shorthand] || [];
+          overrideMapping[shorthand].push(position);
+        }
+      }
+    }
+
+    lastName = _name;
+    lastProperty = property;
+  }
+}
+
+function optimize(selector, properties, mergeAdjacent, withCompacting, options, context) {
+  var validator = context.validator;
+  var warnings = context.warnings;
+
+  var _properties = wrapForOptimizing(properties);
+  populateComponents(_properties, validator, warnings);
+  _optimize(_properties, mergeAdjacent, options.aggressiveMerging, validator);
+
+  for (var i = 0, l = _properties.length; i < l; i++) {
+    var _property = _properties[i];
+    if (_property.variable && _property.block)
+      optimize(selector, _property.value[0], mergeAdjacent, withCompacting, options, context);
+  }
+
+  if (withCompacting && options.shorthandCompacting) {
+    compactOverrides(_properties, options.compatibility, validator);
+    compactShorthands(_properties, options.sourceMap, validator);
+  }
+
+  restoreFromOptimizing(_properties);
+  removeUnused(_properties);
+}
+
+module.exports = optimize;

node_modules/clean-css/lib/properties/override-compactor.js

@@ -0,0 +1,384 @@
+var canOverride = require('./can-override');
+var compactable = require('./compactable');
+var deepClone = require('./clone').deep;
+var shallowClone = require('./clone').shallow;
+var hasInherit = require('./has-inherit');
+var restoreFromOptimizing = require('./restore-from-optimizing');
+var everyCombination = require('./every-combination');
+var sameVendorPrefixesIn = require('./vendor-prefixes').same;
+
+var stringifyProperty = require('../stringifier/one-time').property;
+
+var MULTIPLEX_SEPARATOR = ',';
+
+// Used when searching for a component that matches property
+function nameMatchFilter(to) {
+  return function (property) {
+    return to.name === property.name;
+  };
+}
+
+function wouldBreakCompatibility(property, validator) {
+  for (var i = 0; i < property.components.length; i++) {
+    var component = property.components[i];
+    var descriptor = compactable[component.name];
+    var canOverride = descriptor && descriptor.canOverride || canOverride.sameValue;
+
+    var _component = shallowClone(component);
+    _component.value = [[descriptor.defaultValue]];
+
+    if (!canOverride(_component, component, validator))
+      return true;
+  }
+
+  return false;
+}
+
+function isComponentOf(shorthand, longhand) {
+  return compactable[shorthand.name].components.indexOf(longhand.name) > -1;
+}
+
+function overrideIntoMultiplex(property, by) {
+  by.unused = true;
+
+  turnIntoMultiplex(by, multiplexSize(property));
+  property.value = by.value;
+}
+
+function overrideByMultiplex(property, by) {
+  by.unused = true;
+  property.multiplex = true;
+  property.value = by.value;
+}
+
+function overrideSimple(property, by) {
+  by.unused = true;
+  property.value = by.value;
+}
+
+function override(property, by) {
+  if (by.multiplex)
+    overrideByMultiplex(property, by);
+  else if (property.multiplex)
+    overrideIntoMultiplex(property, by);
+  else
+    overrideSimple(property, by);
+}
+
+function overrideShorthand(property, by) {
+  by.unused = true;
+
+  for (var i = 0, l = property.components.length; i < l; i++) {
+    override(property.components[i], by.components[i], property.multiplex);
+  }
+}
+
+function turnIntoMultiplex(property, size) {
+  property.multiplex = true;
+
+  for (var i = 0, l = property.components.length; i < l; i++) {
+    var component = property.components[i];
+    if (component.multiplex)
+      continue;
+
+    var value = component.value.slice(0);
+
+    for (var j = 1; j < size; j++) {
+      component.value.push([MULTIPLEX_SEPARATOR]);
+      Array.prototype.push.apply(component.value, value);
+    }
+  }
+}
+
+function multiplexSize(component) {
+  var size = 0;
+
+  for (var i = 0, l = component.value.length; i < l; i++) {
+    if (component.value[i][0] == MULTIPLEX_SEPARATOR)
+      size++;
+  }
+
+  return size + 1;
+}
+
+function lengthOf(property) {
+  var fakeAsArray = [[property.name]].concat(property.value);
+  return stringifyProperty([fakeAsArray], 0).length;
+}
+
+function moreSameShorthands(properties, startAt, name) {
+  // Since we run the main loop in `compactOverrides` backwards, at this point some
+  // properties may not be marked as unused.
+  // We should consider reverting the order if possible
+  var count = 0;
+
+  for (var i = startAt; i >= 0; i--) {
+    if (properties[i].name == name && !properties[i].unused)
+      count++;
+    if (count > 1)
+      break;
+  }
+
+  return count > 1;
+}
+
+function overridingFunction(shorthand, validator) {
+  for (var i = 0, l = shorthand.components.length; i < l; i++) {
+    if (anyValue(validator.isValidFunction, shorthand.components[i]))
+      return true;
+  }
+
+  return false;
+}
+
+function anyValue(fn, property) {
+  for (var i = 0, l = property.value.length; i < l; i++) {
+    if (property.value[i][0] == MULTIPLEX_SEPARATOR)
+      continue;
+
+    if (fn(property.value[i][0]))
+      return true;
+  }
+
+  return false;
+}
+
+function wouldResultInLongerValue(left, right) {
+  if (!left.multiplex && !right.multiplex || left.multiplex && right.multiplex)
+    return false;
+
+  var multiplex = left.multiplex ? left : right;
+  var simple = left.multiplex ? right : left;
+  var component;
+
+  var multiplexClone = deepClone(multiplex);
+  restoreFromOptimizing([multiplexClone]);
+
+  var simpleClone = deepClone(simple);
+  restoreFromOptimizing([simpleClone]);
+
+  var lengthBefore = lengthOf(multiplexClone) + 1 + lengthOf(simpleClone);
+
+  if (left.multiplex) {
+    component = multiplexClone.components.filter(nameMatchFilter(simpleClone))[0];
+    overrideIntoMultiplex(component, simpleClone);
+  } else {
+    component = simpleClone.components.filter(nameMatchFilter(multiplexClone))[0];
+    turnIntoMultiplex(simpleClone, multiplexSize(multiplexClone));
+    overrideByMultiplex(component, multiplexClone);
+  }
+
+  restoreFromOptimizing([simpleClone]);
+
+  var lengthAfter = lengthOf(simpleClone);
+
+  return lengthBefore < lengthAfter;
+}
+
+function isCompactable(property) {
+  return property.name in compactable;
+}
+
+function noneOverrideHack(left, right) {
+  return !left.multiplex &&
+    (left.name == 'background' || left.name == 'background-image') &&
+    right.multiplex &&
+    (right.name == 'background' || right.name == 'background-image') &&
+    anyLayerIsNone(right.value);
+}
+
+function anyLayerIsNone(values) {
+  var layers = intoLayers(values);
+
+  for (var i = 0, l = layers.length; i < l; i++) {
+    if (layers[i].length == 1 && layers[i][0][0] == 'none')
+      return true;
+  }
+
+  return false;
+}
+
+function intoLayers(values) {
+  var layers = [];
+
+  for (var i = 0, layer = [], l = values.length; i < l; i++) {
+    var value = values[i];
+    if (value[0] == MULTIPLEX_SEPARATOR) {
+      layers.push(layer);
+      layer = [];
+    } else {
+      layer.push(value);
+    }
+  }
+
+  layers.push(layer);
+  return layers;
+}
+
+function compactOverrides(properties, compatibility, validator) {
+  var mayOverride, right, left, component;
+  var i, j, k;
+
+  propertyLoop:
+  for (i = properties.length - 1; i >= 0; i--) {
+    right = properties[i];
+
+    if (!isCompactable(right))
+      continue;
+
+    if (right.variable)
+      continue;
+
+    mayOverride = compactable[right.name].canOverride || canOverride.sameValue;
+
+    for (j = i - 1; j >= 0; j--) {
+      left = properties[j];
+
+      if (!isCompactable(left))
+        continue;
+
+      if (left.variable)
+        continue;
+
+      if (left.unused || right.unused)
+        continue;
+
+      if (left.hack && !right.hack || !left.hack && right.hack)
+        continue;
+
+      if (hasInherit(right))
+        continue;
+
+      if (noneOverrideHack(left, right))
+        continue;
+
+      if (!left.shorthand && right.shorthand && isComponentOf(right, left)) {
+        // maybe `left` can be overridden by `right` which is a shorthand?
+        if (!right.important && left.important)
+          continue;
+
+        if (!sameVendorPrefixesIn([left], right.components))
+          continue;
+
+        if (!anyValue(validator.isValidFunction, left) && overridingFunction(right, validator))
+          continue;
+
+        component = right.components.filter(nameMatchFilter(left))[0];
+        mayOverride = (compactable[left.name] && compactable[left.name].canOverride) || canOverride.sameValue;
+        if (everyCombination(mayOverride, left, component, validator)) {
+          left.unused = true;
+        }
+      } else if (left.shorthand && !right.shorthand && isComponentOf(left, right)) {
+        // maybe `right` can be pulled into `left` which is a shorthand?
+        if (right.important && !left.important)
+          continue;
+
+        if (!right.important && left.important) {
+          right.unused = true;
+          continue;
+        }
+
+        // Pending more clever algorithm in #527
+        if (moreSameShorthands(properties, i - 1, left.name))
+          continue;
+
+        if (overridingFunction(left, validator))
+          continue;
+
+        component = left.components.filter(nameMatchFilter(right))[0];
+        if (everyCombination(mayOverride, component, right, validator)) {
+          var disabledBackgroundMerging =
+            !compatibility.properties.backgroundClipMerging && component.name.indexOf('background-clip') > -1 ||
+            !compatibility.properties.backgroundOriginMerging && component.name.indexOf('background-origin') > -1 ||
+            !compatibility.properties.backgroundSizeMerging && component.name.indexOf('background-size') > -1;
+          var nonMergeableValue = compactable[right.name].nonMergeableValue === right.value[0][0];
+
+          if (disabledBackgroundMerging || nonMergeableValue)
+            continue;
+
+          if (!compatibility.properties.merging && wouldBreakCompatibility(left, validator))
+            continue;
+
+          if (component.value[0][0] != right.value[0][0] && (hasInherit(left) || hasInherit(right)))
+            continue;
+
+          if (wouldResultInLongerValue(left, right))
+            continue;
+
+          if (!left.multiplex && right.multiplex)
+            turnIntoMultiplex(left, multiplexSize(right));
+
+          override(component, right);
+          left.dirty = true;
+        }
+      } else if (left.shorthand && right.shorthand && left.name == right.name) {
+        // merge if all components can be merged
+
+        if (!left.multiplex && right.multiplex)
+          continue;
+
+        if (!right.important && left.important) {
+          right.unused = true;
+          continue propertyLoop;
+        }
+
+        if (right.important && !left.important) {
+          left.unused = true;
+          continue;
+        }
+
+        for (k = left.components.length - 1; k >= 0; k--) {
+          var leftComponent = left.components[k];
+          var rightComponent = right.components[k];
+
+          mayOverride = compactable[leftComponent.name].canOverride || canOverride.sameValue;
+          if (!everyCombination(mayOverride, leftComponent, rightComponent, validator))
+            continue propertyLoop;
+          if (!everyCombination(canOverride.twoOptionalFunctions, leftComponent, rightComponent, validator) && validator.isValidFunction(rightComponent))
+            continue propertyLoop;
+        }
+
+        overrideShorthand(left, right);
+        left.dirty = true;
+      } else if (left.shorthand && right.shorthand && isComponentOf(left, right)) {
+        // border is a shorthand but any of its components is a shorthand too
+
+        if (!left.important && right.important)
+          continue;
+
+        component = left.components.filter(nameMatchFilter(right))[0];
+        mayOverride = compactable[right.name].canOverride || canOverride.sameValue;
+        if (!everyCombination(mayOverride, component, right, validator))
+          continue;
+
+        if (left.important && !right.important) {
+          right.unused = true;
+          continue;
+        }
+
+        var rightRestored = compactable[right.name].restore(right, compactable);
+        if (rightRestored.length > 1)
+          continue;
+
+        component = left.components.filter(nameMatchFilter(right))[0];
+        override(component, right);
+        right.dirty = true;
+      } else if (left.name == right.name) {
+        // two non-shorthands should be merged based on understandability
+
+        if (left.important && !right.important) {
+          right.unused = true;
+          continue;
+        }
+
+        mayOverride = compactable[right.name].canOverride || canOverride.sameValue;
+        if (!everyCombination(mayOverride, left, right, validator))
+          continue;
+
+        left.unused = true;
+      }
+    }
+  }
+}
+
+module.exports = compactOverrides;

node_modules/clean-css/lib/properties/populate-components.js

@@ -0,0 +1,32 @@
+var compactable = require('./compactable');
+var InvalidPropertyError = require('./invalid-property-error');
+
+function populateComponents(properties, validator, warnings) {
+  for (var i = properties.length - 1; i >= 0; i--) {
+    var property = properties[i];
+    var descriptor = compactable[property.name];
+
+    if (descriptor && descriptor.shorthand) {
+      property.shorthand = true;
+      property.dirty = true;
+
+      try {
+        property.components = descriptor.breakUp(property, compactable, validator);
+      } catch (e) {
+        if (e instanceof InvalidPropertyError) {
+          property.components = []; // this will set property.unused to true below
+          warnings.push(e.message);
+        } else {
+          throw e;
+        }
+      }
+
+      if (property.components.length > 0)
+        property.multiplex = property.components[0].multiplex;
+      else
+        property.unused = true;
+    }
+  }
+}
+
+module.exports = populateComponents;

node_modules/clean-css/lib/properties/remove-unused.js

@@ -0,0 +1,10 @@
+function removeUnused(properties) {
+  for (var i = properties.length - 1; i >= 0; i--) {
+    var property = properties[i];
+
+    if (property.unused)
+      property.all.splice(property.position, 1);
+  }
+}
+
+module.exports = removeUnused;

node_modules/clean-css/lib/properties/restore-from-optimizing.js

@@ -0,0 +1,60 @@
+var compactable = require('./compactable');
+
+var BACKSLASH_HACK = '\\9';
+var IMPORTANT_TOKEN = '!important';
+var STAR_HACK = '*';
+var UNDERSCORE_HACK = '_';
+var BANG_HACK = '!ie';
+
+function restoreImportant(property) {
+  property.value[property.value.length - 1][0] += IMPORTANT_TOKEN;
+}
+
+function restoreHack(property) {
+  if (property.hack == 'underscore')
+    property.name = UNDERSCORE_HACK + property.name;
+  else if (property.hack == 'star')
+    property.name = STAR_HACK + property.name;
+  else if (property.hack == 'backslash')
+    property.value[property.value.length - 1][0] += BACKSLASH_HACK;
+  else if (property.hack == 'bang')
+    property.value[property.value.length - 1][0] += ' ' + BANG_HACK;
+}
+
+function restoreFromOptimizing(properties, simpleMode) {
+  for (var i = properties.length - 1; i >= 0; i--) {
+    var property = properties[i];
+    var descriptor = compactable[property.name];
+    var restored;
+
+    if (property.unused)
+      continue;
+
+    if (!property.dirty && !property.important && !property.hack)
+      continue;
+
+    if (!simpleMode && descriptor && descriptor.shorthand) {
+      restored = descriptor.restore(property, compactable);
+      property.value = restored;
+    } else {
+      restored = property.value;
+    }
+
+    if (property.important)
+      restoreImportant(property);
+
+    if (property.hack)
+      restoreHack(property);
+
+    if (!('all' in property))
+      continue;
+
+    var current = property.all[property.position];
+    current[0][0] = property.name;
+
+    current.splice(1, current.length - 1);
+    Array.prototype.push.apply(current, restored);
+  }
+}
+
+module.exports = restoreFromOptimizing;

node_modules/clean-css/lib/properties/restore.js

@@ -0,0 +1,232 @@
+var shallowClone = require('./clone').shallow;
+var MULTIPLEX_SEPARATOR = ',';
+var SIZE_POSITION_SEPARATOR = '/';
+
+function isInheritOnly(values) {
+  for (var i = 0, l = values.length; i < l; i++) {
+    var value = values[i][0];
+
+    if (value != 'inherit' && value != MULTIPLEX_SEPARATOR && value != SIZE_POSITION_SEPARATOR)
+      return false;
+  }
+
+  return true;
+}
+
+function background(property, compactable, lastInMultiplex) {
+  var components = property.components;
+  var restored = [];
+  var needsOne, needsBoth;
+
+  function restoreValue(component) {
+    Array.prototype.unshift.apply(restored, component.value);
+  }
+
+  function isDefaultValue(component) {
+    var descriptor = compactable[component.name];
+    if (descriptor.doubleValues) {
+      if (descriptor.defaultValue.length == 1)
+        return component.value[0][0] == descriptor.defaultValue[0] && (component.value[1] ? component.value[1][0] == descriptor.defaultValue[0] : true);
+      else
+        return component.value[0][0] == descriptor.defaultValue[0] && (component.value[1] ? component.value[1][0] : component.value[0][0]) == descriptor.defaultValue[1];
+    } else {
+      return component.value[0][0] == descriptor.defaultValue;
+    }
+  }
+
+  for (var i = components.length - 1; i >= 0; i--) {
+    var component = components[i];
+    var isDefault = isDefaultValue(component);
+
+    if (component.name == 'background-clip') {
+      var originComponent = components[i - 1];
+      var isOriginDefault = isDefaultValue(originComponent);
+
+      needsOne = component.value[0][0] == originComponent.value[0][0];
+
+      needsBoth = !needsOne && (
+        (isOriginDefault && !isDefault) ||
+        (!isOriginDefault && !isDefault) ||
+        (!isOriginDefault && isDefault && component.value[0][0] != originComponent.value[0][0]));
+
+      if (needsOne) {
+        restoreValue(originComponent);
+      } else if (needsBoth) {
+        restoreValue(component);
+        restoreValue(originComponent);
+      }
+
+      i--;
+    } else if (component.name == 'background-size') {
+      var positionComponent = components[i - 1];
+      var isPositionDefault = isDefaultValue(positionComponent);
+
+      needsOne = !isPositionDefault && isDefault;
+
+      needsBoth = !needsOne &&
+        (isPositionDefault && !isDefault || !isPositionDefault && !isDefault);
+
+      if (needsOne) {
+        restoreValue(positionComponent);
+      } else if (needsBoth) {
+        restoreValue(component);
+        restored.unshift([SIZE_POSITION_SEPARATOR]);
+        restoreValue(positionComponent);
+      } else if (positionComponent.value.length == 1) {
+        restoreValue(positionComponent);
+      }
+
+      i--;
+    } else {
+      if (isDefault || compactable[component.name].multiplexLastOnly && !lastInMultiplex)
+        continue;
+
+      restoreValue(component);
+    }
+  }
+
+  if (restored.length === 0 && property.value.length == 1 && property.value[0][0] == '0')
+    restored.push(property.value[0]);
+
+  if (restored.length === 0)
+    restored.push([compactable[property.name].defaultValue]);
+
+  if (isInheritOnly(restored))
+    return [restored[0]];
+
+  return restored;
+}
+
+function borderRadius(property, compactable) {
+  if (property.multiplex) {
+    var horizontal = shallowClone(property);
+    var vertical = shallowClone(property);
+
+    for (var i = 0; i < 4; i++) {
+      var component = property.components[i];
+
+      var horizontalComponent = shallowClone(property);
+      horizontalComponent.value = [component.value[0]];
+      horizontal.components.push(horizontalComponent);
+
+      var verticalComponent = shallowClone(property);
+      // FIXME: only shorthand compactor (see breakup#borderRadius) knows that border radius
+      // longhands have two values, whereas tokenizer does not care about populating 2nd value
+      // if it's missing, hence this fallback
+      verticalComponent.value = [component.value[1] || component.value[0]];
+      vertical.components.push(verticalComponent);
+    }
+
+    var horizontalValues = fourValues(horizontal, compactable);
+    var verticalValues = fourValues(vertical, compactable);
+
+    if (horizontalValues.length == verticalValues.length &&
+        horizontalValues[0][0] == verticalValues[0][0] &&
+        (horizontalValues.length > 1 ? horizontalValues[1][0] == verticalValues[1][0] : true) &&
+        (horizontalValues.length > 2 ? horizontalValues[2][0] == verticalValues[2][0] : true) &&
+        (horizontalValues.length > 3 ? horizontalValues[3][0] == verticalValues[3][0] : true)) {
+      return horizontalValues;
+    } else {
+      return horizontalValues.concat([['/']]).concat(verticalValues);
+    }
+  } else {
+    return fourValues(property, compactable);
+  }
+}
+
+function fourValues(property) {
+  var components = property.components;
+  var value1 = components[0].value[0];
+  var value2 = components[1].value[0];
+  var value3 = components[2].value[0];
+  var value4 = components[3].value[0];
+
+  if (value1[0] == value2[0] && value1[0] == value3[0] && value1[0] == value4[0]) {
+    return [value1];
+  } else if (value1[0] == value3[0] && value2[0] == value4[0]) {
+    return [value1, value2];
+  } else if (value2[0] == value4[0]) {
+    return [value1, value2, value3];
+  } else {
+    return [value1, value2, value3, value4];
+  }
+}
+
+function multiplex(restoreWith) {
+  return function (property, compactable) {
+    if (!property.multiplex)
+      return restoreWith(property, compactable, true);
+
+    var multiplexSize = 0;
+    var restored = [];
+    var componentMultiplexSoFar = {};
+    var i, l;
+
+    // At this point we don't know what's the multiplex size, e.g. how many background layers are there
+    for (i = 0, l = property.components[0].value.length; i < l; i++) {
+      if (property.components[0].value[i][0] == MULTIPLEX_SEPARATOR)
+        multiplexSize++;
+    }
+
+    for (i = 0; i <= multiplexSize; i++) {
+      var _property = shallowClone(property);
+
+      // We split multiplex into parts and restore them one by one
+      for (var j = 0, m = property.components.length; j < m; j++) {
+        var componentToClone = property.components[j];
+        var _component = shallowClone(componentToClone);
+        _property.components.push(_component);
+
+        // The trick is some properties has more than one value, so we iterate over values looking for
+        // a multiplex separator - a comma
+        for (var k = componentMultiplexSoFar[_component.name] || 0, n = componentToClone.value.length; k < n; k++) {
+          if (componentToClone.value[k][0] == MULTIPLEX_SEPARATOR) {
+            componentMultiplexSoFar[_component.name] = k + 1;
+            break;
+          }
+
+          _component.value.push(componentToClone.value[k]);
+        }
+      }
+
+      // No we can restore shorthand value
+      var lastInMultiplex = i == multiplexSize;
+      var _restored = restoreWith(_property, compactable, lastInMultiplex);
+      Array.prototype.push.apply(restored, _restored);
+
+      if (i < multiplexSize)
+        restored.push([',']);
+    }
+
+    return restored;
+  };
+}
+
+function withoutDefaults(property, compactable) {
+  var components = property.components;
+  var restored = [];
+
+  for (var i = components.length - 1; i >= 0; i--) {
+    var component = components[i];
+    var descriptor = compactable[component.name];
+
+    if (component.value[0][0] != descriptor.defaultValue)
+      restored.unshift(component.value[0]);
+  }
+
+  if (restored.length === 0)
+    restored.push([compactable[property.name].defaultValue]);
+
+  if (isInheritOnly(restored))
+    return [restored[0]];
+
+  return restored;
+}
+
+module.exports = {
+  background: background,
+  borderRadius: borderRadius,
+  fourValues: fourValues,
+  multiplex: multiplex,
+  withoutDefaults: withoutDefaults
+};

node_modules/clean-css/lib/properties/shorthand-compactor.js

@@ -0,0 +1,134 @@
+var compactable = require('./compactable');
+var deepClone = require('./clone').deep;
+var hasInherit = require('./has-inherit');
+var populateComponents = require('./populate-components');
+var wrapSingle = require('./wrap-for-optimizing').single;
+var everyCombination = require('./every-combination');
+
+function mixedImportance(components) {
+  var important;
+
+  for (var name in components) {
+    if (undefined !== important && components[name].important != important)
+      return true;
+
+    important = components[name].important;
+  }
+
+  return false;
+}
+
+function componentSourceMaps(components) {
+  var sourceMapping = [];
+
+  for (var name in components) {
+    var component = components[name];
+    var originalValue = component.all[component.position];
+    var mapping = originalValue[0][originalValue[0].length - 1];
+
+    if (Array.isArray(mapping))
+      Array.prototype.push.apply(sourceMapping, mapping);
+  }
+
+  return sourceMapping;
+}
+
+function replaceWithShorthand(properties, candidateComponents, name, sourceMaps, validator) {
+  var descriptor = compactable[name];
+  var newValuePlaceholder = [[name], [descriptor.defaultValue]];
+  var all;
+
+  var newProperty = wrapSingle(newValuePlaceholder);
+  newProperty.shorthand = true;
+  newProperty.dirty = true;
+
+  populateComponents([newProperty], validator, []);
+
+  for (var i = 0, l = descriptor.components.length; i < l; i++) {
+    var component = candidateComponents[descriptor.components[i]];
+    var canOverride = compactable[component.name].canOverride;
+
+    if (hasInherit(component))
+      return;
+
+    if (!everyCombination(canOverride, newProperty.components[i], component, validator))
+      return;
+
+    newProperty.components[i] = deepClone(component);
+    newProperty.important = component.important;
+
+    all = component.all;
+  }
+
+  for (var componentName in candidateComponents) {
+    candidateComponents[componentName].unused = true;
+  }
+
+  if (sourceMaps) {
+    var sourceMapping = componentSourceMaps(candidateComponents);
+    if (sourceMapping.length > 0)
+      newValuePlaceholder[0].push(sourceMapping);
+  }
+
+  newProperty.position = all.length;
+  newProperty.all = all;
+  newProperty.all.push(newValuePlaceholder);
+
+  properties.push(newProperty);
+}
+
+function invalidateOrCompact(properties, position, candidates, sourceMaps, validator) {
+  var property = properties[position];
+
+  for (var name in candidates) {
+    if (undefined !== property && name == property.name)
+      continue;
+
+    var descriptor = compactable[name];
+    var candidateComponents = candidates[name];
+    if (descriptor.components.length > Object.keys(candidateComponents).length) {
+      delete candidates[name];
+      continue;
+    }
+
+    if (mixedImportance(candidateComponents))
+      continue;
+
+    replaceWithShorthand(properties, candidateComponents, name, sourceMaps, validator);
+  }
+}
+
+function compactShortands(properties, sourceMaps, validator) {
+  var candidates = {};
+
+  if (properties.length < 3)
+    return;
+
+  for (var i = 0, l = properties.length; i < l; i++) {
+    var property = properties[i];
+    if (property.unused)
+      continue;
+
+    if (property.hack)
+      continue;
+
+    if (property.variable)
+      continue;
+
+    var descriptor = compactable[property.name];
+    if (!descriptor || !descriptor.componentOf)
+      continue;
+
+    if (property.shorthand) {
+      invalidateOrCompact(properties, i, candidates, sourceMaps, validator);
+    } else {
+      var componentOf = descriptor.componentOf;
+      candidates[componentOf] = candidates[componentOf] || {};
+      candidates[componentOf][property.name] = property;
+    }
+  }
+
+  invalidateOrCompact(properties, i, candidates, sourceMaps, validator);
+}
+
+module.exports = compactShortands;

node_modules/clean-css/lib/properties/validator.js

@@ -0,0 +1,197 @@
+// Validates various CSS property values
+
+var split = require('../utils/split');
+
+var widthKeywords = ['thin', 'thick', 'medium', 'inherit', 'initial'];
+var allUnits = ['px', '%', 'em', 'in', 'cm', 'mm', 'ex', 'pt', 'pc', 'ch', 'rem', 'vh', 'vm', 'vmin', 'vmax', 'vw'];
+var cssUnitRegexStr = '(\\-?\\.?\\d+\\.?\\d*(' + allUnits.join('|') + '|)|auto|inherit)';
+var cssCalcRegexStr = '(\\-moz\\-|\\-webkit\\-)?calc\\([^\\)]+\\)';
+var cssFunctionNoVendorRegexStr = '[A-Z]+(\\-|[A-Z]|[0-9])+\\(.*?\\)';
+var cssFunctionVendorRegexStr = '\\-(\\-|[A-Z]|[0-9])+\\(.*?\\)';
+var cssVariableRegexStr = 'var\\(\\-\\-[^\\)]+\\)';
+var cssFunctionAnyRegexStr = '(' + cssVariableRegexStr + '|' + cssFunctionNoVendorRegexStr + '|' + cssFunctionVendorRegexStr + ')';
+var cssUnitOrCalcRegexStr = '(' + cssUnitRegexStr + '|' + cssCalcRegexStr + ')';
+var cssUnitAnyRegexStr = '(none|' + widthKeywords.join('|') + '|' + cssUnitRegexStr + '|' + cssVariableRegexStr + '|' + cssFunctionNoVendorRegexStr + '|' + cssFunctionVendorRegexStr + ')';
+
+var cssFunctionNoVendorRegex = new RegExp('^' + cssFunctionNoVendorRegexStr + '$', 'i');
+var cssFunctionVendorRegex = new RegExp('^' + cssFunctionVendorRegexStr + '$', 'i');
+var cssVariableRegex = new RegExp('^' + cssVariableRegexStr + '$', 'i');
+var cssFunctionAnyRegex = new RegExp('^' + cssFunctionAnyRegexStr + '$', 'i');
+var cssUnitRegex = new RegExp('^' + cssUnitRegexStr + '$', 'i');
+var cssUnitOrCalcRegex = new RegExp('^' + cssUnitOrCalcRegexStr + '$', 'i');
+var cssUnitAnyRegex = new RegExp('^' + cssUnitAnyRegexStr + '$', 'i');
+
+var backgroundRepeatKeywords = ['repeat', 'no-repeat', 'repeat-x', 'repeat-y', 'inherit'];
+var backgroundAttachmentKeywords = ['inherit', 'scroll', 'fixed', 'local'];
+var backgroundPositionKeywords = ['center', 'top', 'bottom', 'left', 'right'];
+var backgroundSizeKeywords = ['contain', 'cover'];
+var backgroundBoxKeywords = ['border-box', 'content-box', 'padding-box'];
+var styleKeywords = ['auto', 'inherit', 'hidden', 'none', 'dotted', 'dashed', 'solid', 'double', 'groove', 'ridge', 'inset', 'outset'];
+var listStyleTypeKeywords = ['armenian', 'circle', 'cjk-ideographic', 'decimal', 'decimal-leading-zero', 'disc', 'georgian', 'hebrew', 'hiragana', 'hiragana-iroha', 'inherit', 'katakana', 'katakana-iroha', 'lower-alpha', 'lower-greek', 'lower-latin', 'lower-roman', 'none', 'square', 'upper-alpha', 'upper-latin', 'upper-roman'];
+var listStylePositionKeywords = ['inside', 'outside', 'inherit'];
+
+function Validator(compatibility) {
+  var validUnits = allUnits.slice(0).filter(function (value) {
+    return !(value in compatibility.units) || compatibility.units[value] === true;
+  });
+
+  var compatibleCssUnitRegexStr = '(\\-?\\.?\\d+\\.?\\d*(' + validUnits.join('|') + '|)|auto|inherit)';
+  this.compatibleCssUnitRegex = new RegExp('^' + compatibleCssUnitRegexStr + '$', 'i');
+  this.compatibleCssUnitAnyRegex = new RegExp('^(none|' + widthKeywords.join('|') + '|' + compatibleCssUnitRegexStr + '|' + cssVariableRegexStr + '|' + cssFunctionNoVendorRegexStr + '|' + cssFunctionVendorRegexStr + ')$', 'i');
+
+  this.colorOpacity = compatibility.colors.opacity;
+}
+
+Validator.prototype.isValidHexColor = function (s) {
+  return (s.length === 4 || s.length === 7) && s[0] === '#';
+};
+
+Validator.prototype.isValidRgbaColor = function (s) {
+  s = s.split(' ').join('');
+  return s.length > 0 && s.indexOf('rgba(') === 0 && s.indexOf(')') === s.length - 1;
+};
+
+Validator.prototype.isValidHslaColor = function (s) {
+  s = s.split(' ').join('');
+  return s.length > 0 && s.indexOf('hsla(') === 0 && s.indexOf(')') === s.length - 1;
+};
+
+Validator.prototype.isValidNamedColor = function (s) {
+  // We don't really check if it's a valid color value, but allow any letters in it
+  return s !== 'auto' && (s === 'transparent' || s === 'inherit' || /^[a-zA-Z]+$/.test(s));
+};
+
+Validator.prototype.isValidVariable = function (s) {
+  return cssVariableRegex.test(s);
+};
+
+Validator.prototype.isValidColor = function (s) {
+  return this.isValidNamedColor(s) ||
+    this.isValidColorValue(s) ||
+    this.isValidVariable(s) ||
+    this.isValidVendorPrefixedValue(s);
+};
+
+Validator.prototype.isValidColorValue = function (s) {
+  return this.isValidHexColor(s) ||
+    this.isValidRgbaColor(s) ||
+    this.isValidHslaColor(s);
+};
+
+Validator.prototype.isValidUrl = function (s) {
+  // NOTE: at this point all URLs are replaced with placeholders by clean-css, so we check for those placeholders
+  return s.indexOf('__ESCAPED_URL_CLEAN_CSS') === 0;
+};
+
+Validator.prototype.isValidUnit = function (s) {
+  return cssUnitAnyRegex.test(s);
+};
+
+Validator.prototype.isValidUnitWithoutFunction = function (s) {
+  return cssUnitRegex.test(s);
+};
+
+Validator.prototype.isValidAndCompatibleUnit = function (s) {
+  return this.compatibleCssUnitAnyRegex.test(s);
+};
+
+Validator.prototype.isValidAndCompatibleUnitWithoutFunction = function (s) {
+  return this.compatibleCssUnitRegex.test(s);
+};
+
+Validator.prototype.isValidFunctionWithoutVendorPrefix = function (s) {
+  return cssFunctionNoVendorRegex.test(s);
+};
+
+Validator.prototype.isValidFunctionWithVendorPrefix = function (s) {
+  return cssFunctionVendorRegex.test(s);
+};
+
+Validator.prototype.isValidFunction = function (s) {
+  return cssFunctionAnyRegex.test(s);
+};
+
+Validator.prototype.isValidBackgroundRepeat = function (s) {
+  return backgroundRepeatKeywords.indexOf(s) >= 0 || this.isValidVariable(s);
+};
+
+Validator.prototype.isValidBackgroundAttachment = function (s) {
+  return backgroundAttachmentKeywords.indexOf(s) >= 0 || this.isValidVariable(s);
+};
+
+Validator.prototype.isValidBackgroundBox = function (s) {
+  return backgroundBoxKeywords.indexOf(s) >= 0 || this.isValidVariable(s);
+};
+
+Validator.prototype.isValidBackgroundPositionPart = function (s) {
+  return backgroundPositionKeywords.indexOf(s) >= 0 || cssUnitOrCalcRegex.test(s) || this.isValidVariable(s);
+};
+
+Validator.prototype.isValidBackgroundPosition = function (s) {
+  if (s === 'inherit')
+    return true;
+
+  var parts = s.split(' ');
+  for (var i = 0, l = parts.length; i < l; i++) {
+    if (parts[i] === '')
+      continue;
+    if (this.isValidBackgroundPositionPart(parts[i]) || this.isValidVariable(parts[i]))
+      continue;
+
+    return false;
+  }
+
+  return true;
+};
+
+Validator.prototype.isValidBackgroundSizePart = function (s) {
+  return backgroundSizeKeywords.indexOf(s) >= 0 || cssUnitRegex.test(s) || this.isValidVariable(s);
+};
+
+Validator.prototype.isValidBackgroundPositionAndSize = function (s) {
+  if (s.indexOf('/') < 0)
+    return false;
+
+  var twoParts = split(s, '/');
+  return this.isValidBackgroundSizePart(twoParts.pop()) && this.isValidBackgroundPositionPart(twoParts.pop());
+};
+
+Validator.prototype.isValidListStyleType = function (s) {
+  return listStyleTypeKeywords.indexOf(s) >= 0 || this.isValidVariable(s);
+};
+
+Validator.prototype.isValidListStylePosition = function (s) {
+  return listStylePositionKeywords.indexOf(s) >= 0 || this.isValidVariable(s);
+};
+
+Validator.prototype.isValidStyle = function (s) {
+  return this.isValidStyleKeyword(s) || this.isValidVariable(s);
+};
+
+Validator.prototype.isValidStyleKeyword = function (s) {
+  return styleKeywords.indexOf(s) >= 0;
+};
+
+Validator.prototype.isValidWidth = function (s) {
+  return this.isValidUnit(s) || this.isValidWidthKeyword(s) || this.isValidVariable(s);
+};
+
+Validator.prototype.isValidWidthKeyword = function (s) {
+  return widthKeywords.indexOf(s) >= 0;
+};
+
+Validator.prototype.isValidVendorPrefixedValue = function (s) {
+  return /^-([A-Za-z0-9]|-)*$/gi.test(s);
+};
+
+Validator.prototype.areSameFunction = function (a, b) {
+  if (!this.isValidFunction(a) || !this.isValidFunction(b))
+    return false;
+
+  var f1name = a.substring(0, a.indexOf('('));
+  var f2name = b.substring(0, b.indexOf('('));
+
+  return f1name === f2name;
+};
+
+module.exports = Validator;

node_modules/clean-css/lib/properties/vendor-prefixes.js

@@ -0,0 +1,26 @@
+var VENDOR_PREFIX_PATTERN = /$\-moz\-|\-ms\-|\-o\-|\-webkit\-/;
+
+function prefixesIn(tokens) {
+  var prefixes = [];
+
+  for (var i = 0, l = tokens.length; i < l; i++) {
+    var token = tokens[i];
+
+    for (var j = 0, m = token.value.length; j < m; j++) {
+      var match = VENDOR_PREFIX_PATTERN.exec(token.value[j][0]);
+
+      if (match && prefixes.indexOf(match[0]) == -1)
+        prefixes.push(match[0]);
+    }
+  }
+
+  return prefixes;
+}
+
+function same(left, right) {
+  return prefixesIn(left).sort().join(',') == prefixesIn(right).sort().join(',');
+}
+
+module.exports = {
+  same: same
+};

node_modules/clean-css/lib/properties/wrap-for-optimizing.js

@@ -0,0 +1,118 @@
+var BACKSLASH_HACK = '\\';
+var IMPORTANT_WORD = 'important';
+var IMPORTANT_TOKEN = '!'+IMPORTANT_WORD;
+var IMPORTANT_WORD_MATCH = new RegExp(IMPORTANT_WORD+'$', 'i');
+var IMPORTANT_TOKEN_MATCH = new RegExp(IMPORTANT_TOKEN+'$', 'i');
+var STAR_HACK = '*';
+var UNDERSCORE_HACK = '_';
+var BANG_HACK = '!';
+
+function wrapAll(properties) {
+  var wrapped = [];
+
+  for (var i = properties.length - 1; i >= 0; i--) {
+    if (typeof properties[i][0] == 'string')
+      continue;
+
+    var single = wrapSingle(properties[i]);
+    single.all = properties;
+    single.position = i;
+    wrapped.unshift(single);
+  }
+
+  return wrapped;
+}
+
+function isMultiplex(property) {
+  for (var i = 1, l = property.length; i < l; i++) {
+    if (property[i][0] == ',' || property[i][0] == '/')
+      return true;
+  }
+
+  return false;
+}
+
+function hackType(property) {
+  var type = false;
+  var name = property[0][0];
+  var lastValue = property[property.length - 1];
+
+  if (name[0] == UNDERSCORE_HACK) {
+    type = 'underscore';
+  } else if (name[0] == STAR_HACK) {
+    type = 'star';
+  } else if (lastValue[0][0] == BANG_HACK && !lastValue[0].match(IMPORTANT_WORD_MATCH)) {
+    type = 'bang';
+  } else if (lastValue[0].indexOf(BANG_HACK) > 0 && !lastValue[0].match(IMPORTANT_WORD_MATCH)) {
+    type = 'bang';
+  } else if (lastValue[0].indexOf(BACKSLASH_HACK) > 0 && lastValue[0].indexOf(BACKSLASH_HACK) == lastValue[0].length - BACKSLASH_HACK.length - 1) {
+    type = 'backslash';
+  } else if (lastValue[0].indexOf(BACKSLASH_HACK) === 0 && lastValue[0].length == 2) {
+    type = 'backslash';
+  }
+
+  return type;
+}
+
+function isImportant(property) {
+  if (property.length > 1) {
+    var p = property[property.length - 1][0];
+    if (typeof(p) === 'string') {
+      return IMPORTANT_TOKEN_MATCH.test(p);
+    }
+  }
+  return false;
+}
+
+function stripImportant(property) {
+  if (property.length > 0)
+    property[property.length - 1][0] = property[property.length - 1][0].replace(IMPORTANT_TOKEN_MATCH, '');
+}
+
+function stripPrefixHack(property) {
+  property[0][0] = property[0][0].substring(1);
+}
+
+function stripSuffixHack(property, hackType) {
+  var lastValue = property[property.length - 1];
+  lastValue[0] = lastValue[0]
+    .substring(0, lastValue[0].indexOf(hackType == 'backslash' ? BACKSLASH_HACK : BANG_HACK))
+    .trim();
+
+  if (lastValue[0].length === 0)
+    property.pop();
+}
+
+function wrapSingle(property) {
+  var _isImportant = isImportant(property);
+  if (_isImportant)
+    stripImportant(property);
+
+  var _hackType = hackType(property);
+  if (_hackType == 'star' || _hackType == 'underscore')
+    stripPrefixHack(property);
+  else if (_hackType == 'backslash' || _hackType == 'bang')
+    stripSuffixHack(property, _hackType);
+
+  var isVariable = property[0][0].indexOf('--') === 0;
+
+  return {
+    block: isVariable && property[1] && Array.isArray(property[1][0][0]),
+    components: [],
+    dirty: false,
+    hack: _hackType,
+    important: _isImportant,
+    name: property[0][0],
+    multiplex: property.length > 2 ? isMultiplex(property) : false,
+    position: 0,
+    shorthand: false,
+    unused: property.length < 2,
+    value: property.slice(1),
+    variable: isVariable
+  };
+}
+
+module.exports = {
+  all: wrapAll,
+  single: wrapSingle
+};

node_modules/clean-css/lib/selectors/advanced.js

@@ -0,0 +1,86 @@
+var optimizeProperties = require('../properties/optimizer');
+
+var removeDuplicates = require('./remove-duplicates');
+var mergeAdjacent = require('./merge-adjacent');
+var reduceNonAdjacent = require('./reduce-non-adjacent');
+var mergeNonAdjacentBySelector = require('./merge-non-adjacent-by-selector');
+var mergeNonAdjacentByBody = require('./merge-non-adjacent-by-body');
+var restructure = require('./restructure');
+var removeDuplicateMediaQueries = require('./remove-duplicate-media-queries');
+var mergeMediaQueries = require('./merge-media-queries');
+
+function removeEmpty(tokens) {
+  for (var i = 0, l = tokens.length; i < l; i++) {
+    var token = tokens[i];
+    var isEmpty = false;
+
+    switch (token[0]) {
+      case 'selector':
+        isEmpty = token[1].length === 0 || token[2].length === 0;
+        break;
+      case 'block':
+        removeEmpty(token[2]);
+        isEmpty = token[2].length === 0;
+    }
+
+    if (isEmpty) {
+      tokens.splice(i, 1);
+      i--;
+      l--;
+    }
+  }
+}
+
+function recursivelyOptimizeBlocks(tokens, options, context) {
+  for (var i = 0, l = tokens.length; i < l; i++) {
+    var token = tokens[i];
+
+    if (token[0] == 'block') {
+      var isKeyframes = /@(-moz-|-o-|-webkit-)?keyframes/.test(token[1][0]);
+      optimize(token[2], options, context, !isKeyframes);
+    }
+  }
+}
+
+function recursivelyOptimizeProperties(tokens, options, context) {
+  for (var i = 0, l = tokens.length; i < l; i++) {
+    var token = tokens[i];
+
+    switch (token[0]) {
+      case 'selector':
+        optimizeProperties(token[1], token[2], false, true, options, context);
+        break;
+      case 'block':
+        recursivelyOptimizeProperties(token[2], options, context);
+    }
+  }
+}
+
+function optimize(tokens, options, context, withRestructuring) {
+  recursivelyOptimizeBlocks(tokens, options, context);
+  recursivelyOptimizeProperties(tokens, options, context);
+
+  removeDuplicates(tokens);
+  mergeAdjacent(tokens, options, context);
+  reduceNonAdjacent(tokens, options, context);
+
+  mergeNonAdjacentBySelector(tokens, options, context);
+  mergeNonAdjacentByBody(tokens, options);
+
+  if (options.restructuring && withRestructuring) {
+    restructure(tokens, options);
+    mergeAdjacent(tokens, options, context);
+  }
+
+  if (options.mediaMerging) {
+    removeDuplicateMediaQueries(tokens);
+    var reduced = mergeMediaQueries(tokens);
+    for (var i = reduced.length - 1; i >= 0; i--) {
+      optimize(reduced[i][2], options, context, false);
+    }
+  }
+
+  removeEmpty(tokens);
+}
+
+module.exports = optimize;

node_modules/clean-css/lib/selectors/clean-up.js

@@ -0,0 +1,89 @@
+function removeWhitespace(match, value) {
+  return '[' + value.replace(/ /g, '') + ']';
+}
+
+function selectorSorter(s1, s2) {
+  return s1[0] > s2[0] ? 1 : -1;
+}
+
+function whitespaceReplacements(_, p1, p2, p3) {
+  if (p1 && p2 && p3.length)
+    return p1 + p2 + ' ';
+  else if (p1 && p2)
+    return p1 + p2;
+  else
+    return p2;
+}
+
+var CleanUp = {
+  selectors: function (selectors, removeUnsupported, adjacentSpace) {
+    var list = [];
+    var repeated = [];
+
+    for (var i = 0, l = selectors.length; i < l; i++) {
+      var selector = selectors[i];
+      var reduced = selector[0]
+        .replace(/\s+/g, ' ')
+        .replace(/ ?, ?/g, ',')
+        .replace(/\s*(\\)?([>+~])(\s*)/g, whitespaceReplacements)
+        .trim();
+
+      if (adjacentSpace && reduced.indexOf('nav') > 0)
+        reduced = reduced.replace(/\+nav(\S|$)/, '+ nav$1');
+
+      if (removeUnsupported && (reduced.indexOf('*+html ') != -1 || reduced.indexOf('*:first-child+html ') != -1))
+        continue;
+
+      if (reduced.indexOf('*') > -1) {
+        reduced = reduced
+          .replace(/\*([:#\.\[])/g, '$1')
+          .replace(/^(\:first\-child)?\+html/, '*$1+html');
+      }
+
+      if (reduced.indexOf('[') > -1)
+        reduced = reduced.replace(/\[([^\]]+)\]/g, removeWhitespace);
+
+      if (repeated.indexOf(reduced) == -1) {
+        selector[0] = reduced;
+        repeated.push(reduced);
+        list.push(selector);
+      }
+    }
+
+    return list.sort(selectorSorter);
+  },
+
+  selectorDuplicates: function (selectors) {
+    var list = [];
+    var repeated = [];
+
+    for (var i = 0, l = selectors.length; i < l; i++) {
+      var selector = selectors[i];
+
+      if (repeated.indexOf(selector[0]) == -1) {
+        repeated.push(selector[0]);
+        list.push(selector);
+      }
+    }
+
+    return list.sort(selectorSorter);
+  },
+
+  block: function (values, spaceAfterClosingBrace) {
+    values[0] = values[0]
+      .replace(/\s+/g, ' ')
+      .replace(/(,|:|\() /g, '$1')
+      .replace(/ \)/g, ')');
+
+    if (!spaceAfterClosingBrace)
+      values[0] = values[0].replace(/\) /g, ')');
+  },
+
+  atRule: function (values) {
+    values[0] = values[0]
+      .replace(/\s+/g, ' ')
+      .trim();
+  }
+};
+
+module.exports = CleanUp;

node_modules/clean-css/lib/selectors/extractor.js

@@ -0,0 +1,69 @@
+// This extractor is used in advanced optimizations
+// IMPORTANT: Mind Token class and this code is not related!
+// Properties will be tokenized in one step, see #429
+
+var stringifySelectors = require('../stringifier/one-time').selectors;
+var stringifyValue = require('../stringifier/one-time').value;
+
+var AT_RULE = 'at-rule';
+
+function extract(token) {
+  var properties = [];
+
+  if (token[0] == 'selector') {
+    var inSpecificSelector = !/[\.\+>~]/.test(stringifySelectors(token[1]));
+    for (var i = 0, l = token[2].length; i < l; i++) {
+      var property = token[2][i];
+
+      if (property.indexOf('__ESCAPED') === 0)
+        continue;
+
+      if (property[0] == AT_RULE)
+        continue;
+
+      var name = token[2][i][0][0];
+      if (name.length === 0)
+        continue;
+
+      if (name.indexOf('--') === 0)
+        continue;
+
+      var value = stringifyValue(token[2], i);
+
+      properties.push([
+        name,
+        value,
+        findNameRoot(name),
+        token[2][i],
+        name + ':' + value,
+        token[1],
+        inSpecificSelector
+      ]);
+    }
+  } else if (token[0] == 'block') {
+    for (var j = 0, k = token[2].length; j < k; j++) {
+      properties = properties.concat(extract(token[2][j]));
+    }
+  }
+
+  return properties;
+}
+
+function findNameRoot(name) {
+  if (name == 'list-style')
+    return name;
+  if (name.indexOf('-radius') > 0)
+    return 'border-radius';
+  if (name == 'border-collapse' || name == 'border-spacing' || name == 'border-image')
+    return name;
+  if (name.indexOf('border-') === 0 && /^border\-\w+\-\w+$/.test(name))
+    return name.match(/border\-\w+/)[0];
+  if (name.indexOf('border-') === 0 && /^border\-\w+$/.test(name))
+    return 'border';
+  if (name.indexOf('text-') === 0)
+    return name;
+
+  return name.replace(/^\-\w+\-/, '').match(/([a-zA-Z]+)/)[0].toLowerCase();
+}
+
+module.exports = extract;

node_modules/clean-css/lib/selectors/is-special.js

@@ -0,0 +1,5 @@
+function isSpecial(options, selector) {
+  return options.compatibility.selectors.special.test(selector);
+}
+
+module.exports = isSpecial;

node_modules/clean-css/lib/selectors/merge-adjacent.js

@@ -0,0 +1,35 @@
+var optimizeProperties = require('../properties/optimizer');
+
+var stringifyBody = require('../stringifier/one-time').body;
+var stringifySelectors = require('../stringifier/one-time').selectors;
+var cleanUpSelectors = require('./clean-up').selectors;
+var isSpecial = require('./is-special');
+
+function mergeAdjacent(tokens, options, context) {
+  var lastToken = [null, [], []];
+  var adjacentSpace = options.compatibility.selectors.adjacentSpace;
+
+  for (var i = 0, l = tokens.length; i < l; i++) {
+    var token = tokens[i];
+
+    if (token[0] != 'selector') {
+      lastToken = [null, [], []];
+      continue;
+    }
+
+    if (lastToken[0] == 'selector' && stringifySelectors(token[1]) == stringifySelectors(lastToken[1])) {
+      var joinAt = [lastToken[2].length];
+      Array.prototype.push.apply(lastToken[2], token[2]);
+      optimizeProperties(token[1], lastToken[2], joinAt, true, options, context);
+      token[2] = [];
+    } else if (lastToken[0] == 'selector' && stringifyBody(token[2]) == stringifyBody(lastToken[2]) &&
+        !isSpecial(options, stringifySelectors(token[1])) && !isSpecial(options, stringifySelectors(lastToken[1]))) {
+      lastToken[1] = cleanUpSelectors(lastToken[1].concat(token[1]), false, adjacentSpace);
+      token[2] = [];
+    } else {
+      lastToken = token;
+    }
+  }
+}
+
+module.exports = mergeAdjacent;

node_modules/clean-css/lib/selectors/merge-media-queries.js

@@ -0,0 +1,64 @@
+var canReorder = require('./reorderable').canReorder;
+var extractProperties = require('./extractor');
+
+function mergeMediaQueries(tokens) {
+  var candidates = {};
+  var reduced = [];
+
+  for (var i = tokens.length - 1; i >= 0; i--) {
+    var token = tokens[i];
+    if (token[0] != 'block')
+      continue;
+
+    var candidate = candidates[token[1][0]];
+    if (!candidate) {
+      candidate = [];
+      candidates[token[1][0]] = candidate;
+    }
+
+    candidate.push(i);
+  }
+
+  for (var name in candidates) {
+    var positions = candidates[name];
+
+    positionLoop:
+    for (var j = positions.length - 1; j > 0; j--) {
+      var positionOne = positions[j];
+      var tokenOne = tokens[positionOne];
+      var positionTwo = positions[j - 1];
+      var tokenTwo = tokens[positionTwo];
+
+      directionLoop:
+      for (var direction = 1; direction >= -1; direction -= 2) {
+        var topToBottom = direction == 1;
+        var from = topToBottom ? positionOne + 1 : positionTwo - 1;
+        var to = topToBottom ? positionTwo : positionOne;
+        var delta = topToBottom ? 1 : -1;
+        var source = topToBottom ? tokenOne : tokenTwo;
+        var target = topToBottom ? tokenTwo : tokenOne;
+        var movedProperties = extractProperties(source);
+
+        while (from != to) {
+          var traversedProperties = extractProperties(tokens[from]);
+          from += delta;
+
+          if (!canReorder(movedProperties, traversedProperties))
+            continue directionLoop;
+        }
+
+        target[2] = topToBottom ?
+          source[2].concat(target[2]) :
+          target[2].concat(source[2]);
+        source[2] = [];
+
+        reduced.push(target);
+        continue positionLoop;
+      }
+    }
+  }
+
+  return reduced;
+}
+
+module.exports = mergeMediaQueries;

node_modules/clean-css/lib/selectors/merge-non-adjacent-by-body.js

@@ -0,0 +1,61 @@
+var stringifyBody = require('../stringifier/one-time').body;
+var stringifySelectors = require('../stringifier/one-time').selectors;
+var cleanUpSelectors = require('./clean-up').selectors;
+var isSpecial = require('./is-special');
+
+function unsafeSelector(value) {
+  return /\.|\*| :/.test(value);
+}
+
+function isBemElement(token) {
+  var asString = stringifySelectors(token[1]);
+  return asString.indexOf('__') > -1 || asString.indexOf('--') > -1;
+}
+
+function withoutModifier(selector) {
+  return selector.replace(/--[^ ,>\+~:]+/g, '');
+}
+
+function removeAnyUnsafeElements(left, candidates) {
+  var leftSelector = withoutModifier(stringifySelectors(left[1]));
+
+  for (var body in candidates) {
+    var right = candidates[body];
+    var rightSelector = withoutModifier(stringifySelectors(right[1]));
+
+    if (rightSelector.indexOf(leftSelector) > -1 || leftSelector.indexOf(rightSelector) > -1)
+      delete candidates[body];
+  }
+}
+
+function mergeNonAdjacentByBody(tokens, options) {
+  var candidates = {};
+  var adjacentSpace = options.compatibility.selectors.adjacentSpace;
+
+  for (var i = tokens.length - 1; i >= 0; i--) {
+    var token = tokens[i];
+    if (token[0] != 'selector')
+      continue;
+
+    if (token[2].length > 0 && (!options.semanticMerging && unsafeSelector(stringifySelectors(token[1]))))
+      candidates = {};
+
+    if (token[2].length > 0 && options.semanticMerging && isBemElement(token))
+      removeAnyUnsafeElements(token, candidates);
+
+    var candidateBody = stringifyBody(token[2]);
+    var oldToken = candidates[candidateBody];
+    if (oldToken && !isSpecial(options, stringifySelectors(token[1])) && !isSpecial(options, stringifySelectors(oldToken[1]))) {
+      token[1] = token[2].length > 0 ?
+        cleanUpSelectors(oldToken[1].concat(token[1]), false, adjacentSpace) :
+        oldToken[1].concat(token[1]);
+
+      oldToken[2] = [];
+      candidates[candidateBody] = null;
+    }
+
+    candidates[stringifyBody(token[2])] = token;
+  }
+}
+
+module.exports = mergeNonAdjacentByBody;

node_modules/clean-css/lib/selectors/merge-non-adjacent-by-selector.js

@@ -0,0 +1,76 @@
+var optimizeProperties = require('../properties/optimizer');
+var stringifySelectors = require('../stringifier/one-time').selectors;
+var extractProperties = require('./extractor');
+var canReorder = require('./reorderable').canReorder;
+
+function mergeNonAdjacentBySelector(tokens, options, context) {
+  var allSelectors = {};
+  var repeatedSelectors = [];
+  var i;
+
+  for (i = tokens.length - 1; i >= 0; i--) {
+    if (tokens[i][0] != 'selector')
+      continue;
+    if (tokens[i][2].length === 0)
+      continue;
+
+    var selector = stringifySelectors(tokens[i][1]);
+    allSelectors[selector] = [i].concat(allSelectors[selector] || []);
+
+    if (allSelectors[selector].length == 2)
+      repeatedSelectors.push(selector);
+  }
+
+  for (i = repeatedSelectors.length - 1; i >= 0; i--) {
+    var positions = allSelectors[repeatedSelectors[i]];
+
+    selectorIterator:
+    for (var j = positions.length - 1; j > 0; j--) {
+      var positionOne = positions[j - 1];
+      var tokenOne = tokens[positionOne];
+      var positionTwo = positions[j];
+      var tokenTwo = tokens[positionTwo];
+
+      directionIterator:
+      for (var direction = 1; direction >= -1; direction -= 2) {
+        var topToBottom = direction == 1;
+        var from = topToBottom ? positionOne + 1 : positionTwo - 1;
+        var to = topToBottom ? positionTwo : positionOne;
+        var delta = topToBottom ? 1 : -1;
+        var moved = topToBottom ? tokenOne : tokenTwo;
+        var target = topToBottom ? tokenTwo : tokenOne;
+        var movedProperties = extractProperties(moved);
+        var joinAt;
+
+        while (from != to) {
+          var traversedProperties = extractProperties(tokens[from]);
+          from += delta;
+
+          // traversed then moved as we move selectors towards the start
+          var reorderable = topToBottom ?
+            canReorder(movedProperties, traversedProperties) :
+            canReorder(traversedProperties, movedProperties);
+
+          if (!reorderable && !topToBottom)
+            continue selectorIterator;
+          if (!reorderable && topToBottom)
+            continue directionIterator;
+        }
+
+        if (topToBottom) {
+          joinAt = [moved[2].length];
+          Array.prototype.push.apply(moved[2], target[2]);
+          target[2] = moved[2];
+        } else {
+          joinAt = [target[2].length];
+          Array.prototype.push.apply(target[2], moved[2]);
+        }
+
+        optimizeProperties(target[1], target[2], joinAt, true, options, context);
+        moved[2] = [];
+      }
+    }
+  }
+}
+
+module.exports = mergeNonAdjacentBySelector;

node_modules/clean-css/lib/selectors/reduce-non-adjacent.js

@@ -0,0 +1,172 @@
+var optimizeProperties = require('../properties/optimizer');
+var stringifyBody = require('../stringifier/one-time').body;
+var stringifySelectors = require('../stringifier/one-time').selectors;
+var isSpecial = require('./is-special');
+var cloneArray = require('../utils/clone-array');
+
+function reduceNonAdjacent(tokens, options, context) {
+  var candidates = {};
+  var repeated = [];
+
+  for (var i = tokens.length - 1; i >= 0; i--) {
+    var token = tokens[i];
+
+    if (token[0] != 'selector')
+      continue;
+    if (token[2].length === 0)
+      continue;
+
+    var selectorAsString = stringifySelectors(token[1]);
+    var isComplexAndNotSpecial = token[1].length > 1 && !isSpecial(options, selectorAsString);
+    var wrappedSelectors = options.sourceMap ? wrappedSelectorsFrom(token[1]) : token[1];
+    var selectors = isComplexAndNotSpecial ?
+      [selectorAsString].concat(wrappedSelectors) :
+      [selectorAsString];
+
+    for (var j = 0, m = selectors.length; j < m; j++) {
+      var selector = selectors[j];
+
+      if (!candidates[selector])
+        candidates[selector] = [];
+      else
+        repeated.push(selector);
+
+      candidates[selector].push({
+        where: i,
+        list: wrappedSelectors,
+        isPartial: isComplexAndNotSpecial && j > 0,
+        isComplex: isComplexAndNotSpecial && j === 0
+      });
+    }
+  }
+
+  reduceSimpleNonAdjacentCases(tokens, repeated, candidates, options, context);
+  reduceComplexNonAdjacentCases(tokens, candidates, options, context);
+}
+
+function wrappedSelectorsFrom(list) {
+  var wrapped = [];
+
+  for (var i = 0; i < list.length; i++) {
+    wrapped.push([list[i][0]]);
+  }
+
+  return wrapped;
+}
+
+function reduceSimpleNonAdjacentCases(tokens, repeated, candidates, options, context) {
+  function filterOut(idx, bodies) {
+    return data[idx].isPartial && bodies.length === 0;
+  }
+
+  function reduceBody(token, newBody, processedCount, tokenIdx) {
+    if (!data[processedCount - tokenIdx - 1].isPartial)
+      token[2] = newBody;
+  }
+
+  for (var i = 0, l = repeated.length; i < l; i++) {
+    var selector = repeated[i];
+    var data = candidates[selector];
+
+    reduceSelector(tokens, selector, data, {
+      filterOut: filterOut,
+      callback: reduceBody
+    }, options, context);
+  }
+}
+
+function reduceComplexNonAdjacentCases(tokens, candidates, options, context) {
+  var localContext = {};
+
+  function filterOut(idx) {
+    return localContext.data[idx].where < localContext.intoPosition;
+  }
+
+  function collectReducedBodies(token, newBody, processedCount, tokenIdx) {
+    if (tokenIdx === 0)
+      localContext.reducedBodies.push(newBody);
+  }
+
+  allSelectors:
+  for (var complexSelector in candidates) {
+    var into = candidates[complexSelector];
+    if (!into[0].isComplex)
+      continue;
+
+    var intoPosition = into[into.length - 1].where;
+    var intoToken = tokens[intoPosition];
+    var reducedBodies = [];
+
+    var selectors = isSpecial(options, complexSelector) ?
+      [complexSelector] :
+      into[0].list;
+
+    localContext.intoPosition = intoPosition;
+    localContext.reducedBodies = reducedBodies;
+
+    for (var j = 0, m = selectors.length; j < m; j++) {
+      var selector = selectors[j];
+      var data = candidates[selector];
+
+      if (data.length < 2)
+        continue allSelectors;
+
+      localContext.data = data;
+
+      reduceSelector(tokens, selector, data, {
+        filterOut: filterOut,
+        callback: collectReducedBodies
+      }, options, context);
+
+      if (stringifyBody(reducedBodies[reducedBodies.length - 1]) != stringifyBody(reducedBodies[0]))
+        continue allSelectors;
+    }
+
+    intoToken[2] = reducedBodies[0];
+  }
+}
+
+function reduceSelector(tokens, selector, data, context, options, outerContext) {
+  var bodies = [];
+  var bodiesAsList = [];
+  var joinsAt = [];
+  var processedTokens = [];
+
+  for (var j = data.length - 1, m = 0; j >= 0; j--) {
+    if (context.filterOut(j, bodies))
+      continue;
+
+    var where = data[j].where;
+    var token = tokens[where];
+    var clonedBody = cloneArray(token[2]);
+
+    bodies = bodies.concat(clonedBody);
+    bodiesAsList.push(clonedBody);
+    processedTokens.push(where);
+  }
+
+  for (j = 0, m = bodiesAsList.length; j < m; j++) {
+    if (bodiesAsList[j].length > 0)
+      joinsAt.push((joinsAt.length > 0 ? joinsAt[joinsAt.length - 1] : 0) + bodiesAsList[j].length);
+  }
+
+  optimizeProperties(selector, bodies, joinsAt, false, options, outerContext);
+
+  var processedCount = processedTokens.length;
+  var propertyIdx = bodies.length - 1;
+  var tokenIdx = processedCount - 1;
+
+  while (tokenIdx >= 0) {
+     if ((tokenIdx === 0 || (bodies[propertyIdx] && bodiesAsList[tokenIdx].indexOf(bodies[propertyIdx]) > -1)) && propertyIdx > -1) {
+      propertyIdx--;
+      continue;
+    }
+
+    var newBody = bodies.splice(propertyIdx + 1);
+    context.callback(tokens[processedTokens[tokenIdx]], newBody, processedCount, tokenIdx);
+
+    tokenIdx--;
+  }
+}
+
+module.exports = reduceNonAdjacent;

node_modules/clean-css/lib/selectors/remove-duplicate-media-queries.js

@@ -0,0 +1,21 @@
+var stringifyAll = require('../stringifier/one-time').all;
+
+function removeDuplicateMediaQueries(tokens) {
+  var candidates = {};
+
+  for (var i = 0, l = tokens.length; i < l; i++) {
+    var token = tokens[i];
+    if (token[0] != 'block')
+      continue;
+
+    var key = token[1][0] + '%' + stringifyAll(token[2]);
+    var candidate = candidates[key];
+
+    if (candidate)
+      candidate[2] = [];
+
+    candidates[key] = token;
+  }
+}
+
+module.exports = removeDuplicateMediaQueries;

node_modules/clean-css/lib/selectors/remove-duplicates.js

@@ -0,0 +1,41 @@
+var stringifyBody = require('../stringifier/one-time').body;
+var stringifySelectors = require('../stringifier/one-time').selectors;
+
+function removeDuplicates(tokens) {
+  var matched = {};
+  var moreThanOnce = [];
+  var id, token;
+  var body, bodies;
+
+  for (var i = 0, l = tokens.length; i < l; i++) {
+    token = tokens[i];
+    if (token[0] != 'selector')
+      continue;
+
+    id = stringifySelectors(token[1]);
+
+    if (matched[id] && matched[id].length == 1)
+      moreThanOnce.push(id);
+    else
+      matched[id] = matched[id] || [];
+
+    matched[id].push(i);
+  }
+
+  for (i = 0, l = moreThanOnce.length; i < l; i++) {
+    id = moreThanOnce[i];
+    bodies = [];
+
+    for (var j = matched[id].length - 1; j >= 0; j--) {
+      token = tokens[matched[id][j]];
+      body = stringifyBody(token[2]);
+
+      if (bodies.indexOf(body) > -1)
+        token[2] = [];
+      else
+        bodies.push(body);
+    }
+  }
+}
+
+module.exports = removeDuplicates;

node_modules/clean-css/lib/selectors/reorderable.js

@@ -0,0 +1,99 @@
+// TODO: it'd be great to merge it with the other canReorder functionality
+
+var FLEX_PROPERTIES = /align\-items|box\-align|box\-pack|flex|justify/;
+var BORDER_PROPERTIES = /^border\-(top|right|bottom|left|color|style|width|radius)/;
+
+function canReorder(left, right) {
+  for (var i = right.length - 1; i >= 0; i--) {
+    for (var j = left.length - 1; j >= 0; j--) {
+      if (!canReorderSingle(left[j], right[i]))
+        return false;
+    }
+  }
+
+  return true;
+}
+
+function canReorderSingle(left, right) {
+  var leftName = left[0];
+  var leftValue = left[1];
+  var leftNameRoot = left[2];
+  var leftSelector = left[5];
+  var leftInSpecificSelector = left[6];
+  var rightName = right[0];
+  var rightValue = right[1];
+  var rightNameRoot = right[2];
+  var rightSelector = right[5];
+  var rightInSpecificSelector = right[6];
+
+  if (leftName == 'font' && rightName == 'line-height' || rightName == 'font' && leftName == 'line-height')
+    return false;
+  if (FLEX_PROPERTIES.test(leftName) && FLEX_PROPERTIES.test(rightName))
+    return false;
+  if (leftNameRoot == rightNameRoot && unprefixed(leftName) == unprefixed(rightName) && (vendorPrefixed(leftName) ^ vendorPrefixed(rightName)))
+    return false;
+  if (leftNameRoot == 'border' && BORDER_PROPERTIES.test(rightNameRoot) && (leftName == 'border' || leftName == rightNameRoot || (leftValue != rightValue && sameBorderComponent(leftName, rightName))))
+    return false;
+  if (rightNameRoot == 'border' && BORDER_PROPERTIES.test(leftNameRoot) && (rightName == 'border' || rightName == leftNameRoot || (leftValue != rightValue && sameBorderComponent(leftName, rightName))))
+    return false;
+  if (leftNameRoot == 'border' && rightNameRoot == 'border' && leftName != rightName && (isSideBorder(leftName) && isStyleBorder(rightName) || isStyleBorder(leftName) && isSideBorder(rightName)))
+    return false;
+  if (leftNameRoot != rightNameRoot)
+    return true;
+  if (leftName == rightName && leftNameRoot == rightNameRoot && (leftValue == rightValue || withDifferentVendorPrefix(leftValue, rightValue)))
+    return true;
+  if (leftName != rightName && leftNameRoot == rightNameRoot && leftName != leftNameRoot && rightName != rightNameRoot)
+    return true;
+  if (leftName != rightName && leftNameRoot == rightNameRoot && leftValue == rightValue)
+    return true;
+  if (rightInSpecificSelector && leftInSpecificSelector && !inheritable(leftNameRoot) && !inheritable(rightNameRoot) && selectorsDoNotOverlap(rightSelector, leftSelector))
+    return true;
+
+  return false;
+}
+
+function vendorPrefixed(name) {
+  return /^\-(?:moz|webkit|ms|o)\-/.test(name);
+}
+
+function unprefixed(name) {
+  return name.replace(/^\-(?:moz|webkit|ms|o)\-/, '');
+}
+
+function sameBorderComponent(name1, name2) {
+  return name1.split('-').pop() == name2.split('-').pop();
+}
+
+function isSideBorder(name) {
+  return name == 'border-top' || name == 'border-right' || name == 'border-bottom' || name == 'border-left';
+}
+
+function isStyleBorder(name) {
+  return name == 'border-color' || name == 'border-style' || name == 'border-width';
+}
+
+function withDifferentVendorPrefix(value1, value2) {
+  return vendorPrefixed(value1) && vendorPrefixed(value2) && value1.split('-')[1] != value2.split('-')[2];
+}
+
+function selectorsDoNotOverlap(s1, s2) {
+  for (var i = 0, l = s1.length; i < l; i++) {
+    for (var j = 0, m = s2.length; j < m; j++) {
+      if (s1[i][0] == s2[j][0])
+        return false;
+    }
+  }
+
+  return true;
+}
+
+function inheritable(name) {
+  // According to http://www.w3.org/TR/CSS21/propidx.html
+  // Others will be catched by other, preceeding rules
+  return name == 'font' || name == 'line-height' || name == 'list-style';
+}
+
+module.exports = {
+  canReorder: canReorder,
+  canReorderSingle: canReorderSingle
+};

node_modules/clean-css/lib/selectors/restructure.js

@@ -0,0 +1,369 @@
+var extractProperties = require('./extractor');
+var canReorderSingle = require('./reorderable').canReorderSingle;
+var stringifyBody = require('../stringifier/one-time').body;
+var stringifySelectors = require('../stringifier/one-time').selectors;
+var cleanUpSelectorDuplicates = require('./clean-up').selectorDuplicates;
+var isSpecial = require('./is-special');
+var cloneArray = require('../utils/clone-array');
+
+function naturalSorter(a, b) {
+  return a > b;
+}
+
+function cloneAndMergeSelectors(propertyA, propertyB) {
+  var cloned = cloneArray(propertyA);
+  cloned[5] = cloned[5].concat(propertyB[5]);
+
+  return cloned;
+}
+
+function restructure(tokens, options) {
+  var movableTokens = {};
+  var movedProperties = [];
+  var multiPropertyMoveCache = {};
+  var movedToBeDropped = [];
+  var maxCombinationsLevel = 2;
+  var ID_JOIN_CHARACTER = '%';
+
+  function sendToMultiPropertyMoveCache(position, movedProperty, allFits) {
+    for (var i = allFits.length - 1; i >= 0; i--) {
+      var fit = allFits[i][0];
+      var id = addToCache(movedProperty, fit);
+
+      if (multiPropertyMoveCache[id].length > 1 && processMultiPropertyMove(position, multiPropertyMoveCache[id])) {
+        removeAllMatchingFromCache(id);
+        break;
+      }
+    }
+  }
+
+  function addToCache(movedProperty, fit) {
+    var id = cacheId(fit);
+    multiPropertyMoveCache[id] = multiPropertyMoveCache[id] || [];
+    multiPropertyMoveCache[id].push([movedProperty, fit]);
+    return id;
+  }
+
+  function removeAllMatchingFromCache(matchId) {
+    var matchSelectors = matchId.split(ID_JOIN_CHARACTER);
+    var forRemoval = [];
+    var i;
+
+    for (var id in multiPropertyMoveCache) {
+      var selectors = id.split(ID_JOIN_CHARACTER);
+      for (i = selectors.length - 1; i >= 0; i--) {
+        if (matchSelectors.indexOf(selectors[i]) > -1) {
+          forRemoval.push(id);
+          break;
+        }
+      }
+    }
+
+    for (i = forRemoval.length - 1; i >= 0; i--) {
+      delete multiPropertyMoveCache[forRemoval[i]];
+    }
+  }
+
+  function cacheId(cachedTokens) {
+    var id = [];
+    for (var i = 0, l = cachedTokens.length; i < l; i++) {
+      id.push(stringifySelectors(cachedTokens[i][1]));
+    }
+    return id.join(ID_JOIN_CHARACTER);
+  }
+
+  function tokensToMerge(sourceTokens) {
+    var uniqueTokensWithBody = [];
+    var mergeableTokens = [];
+
+    for (var i = sourceTokens.length - 1; i >= 0; i--) {
+      if (isSpecial(options, stringifySelectors(sourceTokens[i][1])))
+        continue;
+
+      mergeableTokens.unshift(sourceTokens[i]);
+      if (sourceTokens[i][2].length > 0 && uniqueTokensWithBody.indexOf(sourceTokens[i]) == -1)
+        uniqueTokensWithBody.push(sourceTokens[i]);
+    }
+
+    return uniqueTokensWithBody.length > 1 ?
+      mergeableTokens :
+      [];
+  }
+
+  function shortenIfPossible(position, movedProperty) {
+    var name = movedProperty[0];
+    var value = movedProperty[1];
+    var key = movedProperty[4];
+    var valueSize = name.length + value.length + 1;
+    var allSelectors = [];
+    var qualifiedTokens = [];
+
+    var mergeableTokens = tokensToMerge(movableTokens[key]);
+    if (mergeableTokens.length < 2)
+      return;
+
+    var allFits = findAllFits(mergeableTokens, valueSize, 1);
+    var bestFit = allFits[0];
+    if (bestFit[1] > 0)
+      return sendToMultiPropertyMoveCache(position, movedProperty, allFits);
+
+    for (var i = bestFit[0].length - 1; i >=0; i--) {
+      allSelectors = bestFit[0][i][1].concat(allSelectors);
+      qualifiedTokens.unshift(bestFit[0][i]);
+    }
+
+    allSelectors = cleanUpSelectorDuplicates(allSelectors);
+    dropAsNewTokenAt(position, [movedProperty], allSelectors, qualifiedTokens);
+  }
+
+  function fitSorter(fit1, fit2) {
+    return fit1[1] > fit2[1];
+  }
+
+  function findAllFits(mergeableTokens, propertySize, propertiesCount) {
+    var combinations = allCombinations(mergeableTokens, propertySize, propertiesCount, maxCombinationsLevel - 1);
+    return combinations.sort(fitSorter);
+  }
+
+  function allCombinations(tokensVariant, propertySize, propertiesCount, level) {
+    var differenceVariants = [[tokensVariant, sizeDifference(tokensVariant, propertySize, propertiesCount)]];
+    if (tokensVariant.length > 2 && level > 0) {
+      for (var i = tokensVariant.length - 1; i >= 0; i--) {
+        var subVariant = Array.prototype.slice.call(tokensVariant, 0);
+        subVariant.splice(i, 1);
+        differenceVariants = differenceVariants.concat(allCombinations(subVariant, propertySize, propertiesCount, level - 1));
+      }
+    }
+
+    return differenceVariants;
+  }
+
+  function sizeDifference(tokensVariant, propertySize, propertiesCount) {
+    var allSelectorsSize = 0;
+    for (var i = tokensVariant.length - 1; i >= 0; i--) {
+      allSelectorsSize += tokensVariant[i][2].length > propertiesCount ? stringifySelectors(tokensVariant[i][1]).length : -1;
+    }
+    return allSelectorsSize - (tokensVariant.length - 1) * propertySize + 1;
+  }
+
+  function dropAsNewTokenAt(position, properties, allSelectors, mergeableTokens) {
+    var i, j, k, m;
+    var allProperties = [];
+
+    for (i = mergeableTokens.length - 1; i >= 0; i--) {
+      var mergeableToken = mergeableTokens[i];
+
+      for (j = mergeableToken[2].length - 1; j >= 0; j--) {
+        var mergeableProperty = mergeableToken[2][j];
+
+        for (k = 0, m = properties.length; k < m; k++) {
+          var property = properties[k];
+
+          var mergeablePropertyName = mergeableProperty[0][0];
+          var propertyName = property[0];
+          var propertyBody = property[4];
+          if (mergeablePropertyName == propertyName && stringifyBody([mergeableProperty]) == propertyBody) {
+            mergeableToken[2].splice(j, 1);
+            break;
+          }
+        }
+      }
+    }
+
+    for (i = properties.length - 1; i >= 0; i--) {
+      allProperties.unshift(properties[i][3]);
+    }
+
+    var newToken = ['selector', allSelectors, allProperties];
+    tokens.splice(position, 0, newToken);
+  }
+
+  function dropPropertiesAt(position, movedProperty) {
+    var key = movedProperty[4];
+    var toMove = movableTokens[key];
+
+    if (toMove && toMove.length > 1) {
+      if (!shortenMultiMovesIfPossible(position, movedProperty))
+        shortenIfPossible(position, movedProperty);
+    }
+  }
+
+  function shortenMultiMovesIfPossible(position, movedProperty) {
+    var candidates = [];
+    var propertiesAndMergableTokens = [];
+    var key = movedProperty[4];
+    var j, k;
+
+    var mergeableTokens = tokensToMerge(movableTokens[key]);
+    if (mergeableTokens.length < 2)
+      return;
+
+    movableLoop:
+    for (var value in movableTokens) {
+      var tokensList = movableTokens[value];
+
+      for (j = mergeableTokens.length - 1; j >= 0; j--) {
+        if (tokensList.indexOf(mergeableTokens[j]) == -1)
+          continue movableLoop;
+      }
+
+      candidates.push(value);
+    }
+
+    if (candidates.length < 2)
+      return false;
+
+    for (j = candidates.length - 1; j >= 0; j--) {
+      for (k = movedProperties.length - 1; k >= 0; k--) {
+        if (movedProperties[k][4] == candidates[j]) {
+          propertiesAndMergableTokens.unshift([movedProperties[k], mergeableTokens]);
+          break;
+        }
+      }
+    }
+
+    return processMultiPropertyMove(position, propertiesAndMergableTokens);
+  }
+
+  function processMultiPropertyMove(position, propertiesAndMergableTokens) {
+    var valueSize = 0;
+    var properties = [];
+    var property;
+
+    for (var i = propertiesAndMergableTokens.length - 1; i >= 0; i--) {
+      property = propertiesAndMergableTokens[i][0];
+      var fullValue = property[4];
+      valueSize += fullValue.length + (i > 0 ? 1 : 0);
+
+      properties.push(property);
+    }
+
+    var mergeableTokens = propertiesAndMergableTokens[0][1];
+    var bestFit = findAllFits(mergeableTokens, valueSize, properties.length)[0];
+    if (bestFit[1] > 0)
+      return false;
+
+    var allSelectors = [];
+    var qualifiedTokens = [];
+    for (i = bestFit[0].length - 1; i >= 0; i--) {
+      allSelectors = bestFit[0][i][1].concat(allSelectors);
+      qualifiedTokens.unshift(bestFit[0][i]);
+    }
+
+    allSelectors = cleanUpSelectorDuplicates(allSelectors);
+    dropAsNewTokenAt(position, properties, allSelectors, qualifiedTokens);
+
+    for (i = properties.length - 1; i >= 0; i--) {
+      property = properties[i];
+      var index = movedProperties.indexOf(property);
+
+      delete movableTokens[property[4]];
+
+      if (index > -1 && movedToBeDropped.indexOf(index) == -1)
+        movedToBeDropped.push(index);
+    }
+
+    return true;
+  }
+
+  function boundToAnotherPropertyInCurrrentToken(property, movedProperty, token) {
+    var propertyName = property[0];
+    var movedPropertyName = movedProperty[0];
+    if (propertyName != movedPropertyName)
+      return false;
+
+    var key = movedProperty[4];
+    var toMove = movableTokens[key];
+    return toMove && toMove.indexOf(token) > -1;
+  }
+
+  for (var i = tokens.length - 1; i >= 0; i--) {
+    var token = tokens[i];
+    var isSelector;
+    var j, k, m;
+    var samePropertyAt;
+
+    if (token[0] == 'selector') {
+      isSelector = true;
+    } else if (token[0] == 'block') {
+      isSelector = false;
+    } else {
+      continue;
+    }
+
+    // We cache movedProperties.length as it may change in the loop
+    var movedCount = movedProperties.length;
+
+    var properties = extractProperties(token);
+    movedToBeDropped = [];
+
+    var unmovableInCurrentToken = [];
+    for (j = properties.length - 1; j >= 0; j--) {
+      for (k = j - 1; k >= 0; k--) {
+        if (!canReorderSingle(properties[j], properties[k])) {
+          unmovableInCurrentToken.push(j);
+          break;
+        }
+      }
+    }
+
+    for (j = properties.length - 1; j >= 0; j--) {
+      var property = properties[j];
+      var movedSameProperty = false;
+
+      for (k = 0; k < movedCount; k++) {
+        var movedProperty = movedProperties[k];
+
+        if (movedToBeDropped.indexOf(k) == -1 && !canReorderSingle(property, movedProperty) && !boundToAnotherPropertyInCurrrentToken(property, movedProperty, token)) {
+          dropPropertiesAt(i + 1, movedProperty, token);
+
+          if (movedToBeDropped.indexOf(k) == -1) {
+            movedToBeDropped.push(k);
+            delete movableTokens[movedProperty[4]];
+          }
+        }
+
+        if (!movedSameProperty) {
+          movedSameProperty = property[0] == movedProperty[0] && property[1] == movedProperty[1];
+
+          if (movedSameProperty) {
+            samePropertyAt = k;
+          }
+        }
+      }
+
+      if (!isSelector || unmovableInCurrentToken.indexOf(j) > -1)
+        continue;
+
+      var key = property[4];
+      movableTokens[key] = movableTokens[key] || [];
+      movableTokens[key].push(token);
+
+      if (movedSameProperty) {
+        movedProperties[samePropertyAt] = cloneAndMergeSelectors(movedProperties[samePropertyAt], property);
+      } else {
+        movedProperties.push(property);
+      }
+    }
+
+    movedToBeDropped = movedToBeDropped.sort(naturalSorter);
+    for (j = 0, m = movedToBeDropped.length; j < m; j++) {
+      var dropAt = movedToBeDropped[j] - j;
+      movedProperties.splice(dropAt, 1);
+    }
+  }
+
+  var position = tokens[0] && tokens[0][0] == 'at-rule' && tokens[0][1][0].indexOf('@charset') === 0 ? 1 : 0;
+  for (; position < tokens.length - 1; position++) {
+    var isImportRule = tokens[position][0] === 'at-rule' && tokens[position][1][0].indexOf('@import') === 0;
+    var isEscapedCommentSpecial = tokens[position][0] === 'text' && tokens[position][1][0].indexOf('__ESCAPED_COMMENT_SPECIAL') === 0;
+    if (!(isImportRule || isEscapedCommentSpecial))
+      break;
+  }
+
+  for (i = 0; i < movedProperties.length; i++) {
+    dropPropertiesAt(position, movedProperties[i]);
+  }
+}
+
+module.exports = restructure;

node_modules/clean-css/lib/selectors/simple.js

@@ -0,0 +1,454 @@
+var cleanUpSelectors = require('./clean-up').selectors;
+var cleanUpBlock = require('./clean-up').block;
+var cleanUpAtRule = require('./clean-up').atRule;
+var split = require('../utils/split');
+
+var RGB = require('../colors/rgb');
+var HSL = require('../colors/hsl');
+var HexNameShortener = require('../colors/hex-name-shortener');
+
+var wrapForOptimizing = require('../properties/wrap-for-optimizing').all;
+var restoreFromOptimizing = require('../properties/restore-from-optimizing');
+var removeUnused = require('../properties/remove-unused');
+
+var DEFAULT_ROUNDING_PRECISION = 2;
+var CHARSET_TOKEN = '@charset';
+var CHARSET_REGEXP = new RegExp('^' + CHARSET_TOKEN, 'i');
+var IMPORT_REGEXP = /^@import["'\s]/i;
+
+var FONT_NUMERAL_WEIGHTS = ['100', '200', '300', '400', '500', '600', '700', '800', '900'];
+var FONT_NAME_WEIGHTS = ['normal', 'bold', 'bolder', 'lighter'];
+var FONT_NAME_WEIGHTS_WITHOUT_NORMAL = ['bold', 'bolder', 'lighter'];
+
+var WHOLE_PIXEL_VALUE = /(?:^|\s|\()(-?\d+)px/;
+var TIME_VALUE = /^(\-?[\d\.]+)(m?s)$/;
+
+var valueMinifiers = {
+  'background': function (value, index, total) {
+    return index === 0 && total == 1 && (value == 'none' || value == 'transparent') ? '0 0' : value;
+  },
+  'font-weight': function (value) {
+    if (value == 'normal')
+      return '400';
+    else if (value == 'bold')
+      return '700';
+    else
+      return value;
+  },
+  'outline': function (value, index, total) {
+    return index === 0 && total == 1 && value == 'none' ? '0' : value;
+  }
+};
+
+function isNegative(property, idx) {
+  return property.value[idx] && property.value[idx][0][0] == '-' && parseFloat(property.value[idx][0]) < 0;
+}
+
+function zeroMinifier(name, value) {
+  if (value.indexOf('0') == -1)
+    return value;
+
+  if (value.indexOf('-') > -1) {
+    value = value
+      .replace(/([^\w\d\-]|^)\-0([^\.]|$)/g, '$10$2')
+      .replace(/([^\w\d\-]|^)\-0([^\.]|$)/g, '$10$2');
+  }
+
+  return value
+    .replace(/(^|\s)0+([1-9])/g, '$1$2')
+    .replace(/(^|\D)\.0+(\D|$)/g, '$10$2')
+    .replace(/(^|\D)\.0+(\D|$)/g, '$10$2')
+    .replace(/\.([1-9]*)0+(\D|$)/g, function (match, nonZeroPart, suffix) {
+      return (nonZeroPart.length > 0 ? '.' : '') + nonZeroPart + suffix;
+    })
+    .replace(/(^|\D)0\.(\d)/g, '$1.$2');
+}
+
+function zeroDegMinifier(_, value) {
+  if (value.indexOf('0deg') == -1)
+    return value;
+
+  return value.replace(/\(0deg\)/g, '(0)');
+}
+
+function whitespaceMinifier(name, value) {
+  if (name.indexOf('filter') > -1 || value.indexOf(' ') == -1)
+    return value;
+
+  value = value.replace(/\s+/g, ' ');
+
+  if (value.indexOf('calc') > -1)
+    value = value.replace(/\) ?\/ ?/g, ')/ ');
+
+  return value
+    .replace(/\( /g, '(')
+    .replace(/ \)/g, ')')
+    .replace(/, /g, ',');
+}
+
+function precisionMinifier(_, value, precisionOptions) {
+  if (precisionOptions.value === -1 || value.indexOf('.') === -1)
+    return value;
+
+  return value
+    .replace(precisionOptions.regexp, function (match, number) {
+      return Math.round(parseFloat(number) * precisionOptions.multiplier) / precisionOptions.multiplier + 'px';
+    })
+    .replace(/(\d)\.($|\D)/g, '$1$2');
+}
+
+function unitMinifier(name, value, unitsRegexp) {
+  if (/^(?:\-moz\-calc|\-webkit\-calc|calc)\(/.test(value))
+    return value;
+
+  if (name == 'flex' || name == '-ms-flex' || name == '-webkit-flex' || name == 'flex-basis' || name == '-webkit-flex-basis')
+    return value;
+
+  if (value.indexOf('%') > 0 && (name == 'height' || name == 'max-height'))
+    return value;
+
+  return value
+    .replace(unitsRegexp, '$1' + '0' + '$2')
+    .replace(unitsRegexp, '$1' + '0' + '$2');
+}
+
+function multipleZerosMinifier(property) {
+  var values = property.value;
+  var spliceAt;
+
+  if (values.length == 4 && values[0][0] === '0' && values[1][0] === '0' && values[2][0] === '0' && values[3][0] === '0') {
+    if (property.name.indexOf('box-shadow') > -1)
+      spliceAt = 2;
+    else
+      spliceAt = 1;
+  }
+
+  if (spliceAt) {
+    property.value.splice(spliceAt);
+    property.dirty = true;
+  }
+}
+
+function colorMininifier(name, value, compatibility) {
+  if (value.indexOf('#') === -1 && value.indexOf('rgb') == -1 && value.indexOf('hsl') == -1)
+    return HexNameShortener.shorten(value);
+
+  value = value
+    .replace(/rgb\((\-?\d+),(\-?\d+),(\-?\d+)\)/g, function (match, red, green, blue) {
+      return new RGB(red, green, blue).toHex();
+    })
+    .replace(/hsl\((-?\d+),(-?\d+)%?,(-?\d+)%?\)/g, function (match, hue, saturation, lightness) {
+      return new HSL(hue, saturation, lightness).toHex();
+    })
+    .replace(/(^|[^='"])#([0-9a-f]{6})/gi, function (match, prefix, color) {
+      if (color[0] == color[1] && color[2] == color[3] && color[4] == color[5])
+        return prefix + '#' + color[0] + color[2] + color[4];
+      else
+        return prefix + '#' + color;
+    })
+    .replace(/(rgb|rgba|hsl|hsla)\(([^\)]+)\)/g, function (match, colorFunction, colorDef) {
+      var tokens = colorDef.split(',');
+      var applies = (colorFunction == 'hsl' && tokens.length == 3) ||
+        (colorFunction == 'hsla' && tokens.length == 4) ||
+        (colorFunction == 'rgb' && tokens.length == 3 && colorDef.indexOf('%') > 0) ||
+        (colorFunction == 'rgba' && tokens.length == 4 && colorDef.indexOf('%') > 0);
+      if (!applies)
+        return match;
+
+      if (tokens[1].indexOf('%') == -1)
+        tokens[1] += '%';
+      if (tokens[2].indexOf('%') == -1)
+        tokens[2] += '%';
+      return colorFunction + '(' + tokens.join(',') + ')';
+    });
+
+  if (compatibility.colors.opacity && name.indexOf('background') == -1) {
+    value = value.replace(/(?:rgba|hsla)\(0,0%?,0%?,0\)/g, function (match) {
+      if (split(value, ',').pop().indexOf('gradient(') > -1)
+        return match;
+
+      return 'transparent';
+    });
+  }
+
+  return HexNameShortener.shorten(value);
+}
+
+function pixelLengthMinifier(_, value, compatibility) {
+  if (!WHOLE_PIXEL_VALUE.test(value))
+    return value;
+
+  return value.replace(WHOLE_PIXEL_VALUE, function (match, val) {
+    var newValue;
+    var intVal = parseInt(val);
+
+    if (intVal === 0)
+      return match;
+
+    if (compatibility.properties.shorterLengthUnits && compatibility.units.pt && intVal * 3 % 4 === 0)
+      newValue = intVal * 3 / 4 + 'pt';
+
+    if (compatibility.properties.shorterLengthUnits && compatibility.units.pc && intVal % 16 === 0)
+      newValue = intVal / 16 + 'pc';
+
+    if (compatibility.properties.shorterLengthUnits && compatibility.units.in && intVal % 96 === 0)
+      newValue = intVal / 96 + 'in';
+
+    if (newValue)
+      newValue = match.substring(0, match.indexOf(val)) + newValue;
+
+    return newValue && newValue.length < match.length ? newValue : match;
+  });
+}
+
+function timeUnitMinifier(_, value) {
+  if (!TIME_VALUE.test(value))
+    return value;
+
+  return value.replace(TIME_VALUE, function (match, val, unit) {
+    var newValue;
+
+    if (unit == 'ms') {
+      newValue = parseInt(val) / 1000 + 's';
+    } else if (unit == 's') {
+      newValue = parseFloat(val) * 1000 + 'ms';
+    }
+
+    return newValue.length < match.length ? newValue : match;
+  });
+}
+
+function minifyBorderRadius(property) {
+  var values = property.value;
+  var spliceAt;
+
+  if (values.length == 3 && values[1][0] == '/' && values[0][0] == values[2][0])
+    spliceAt = 1;
+  else if (values.length == 5 && values[2][0] == '/' && values[0][0] == values[3][0] && values[1][0] == values[4][0])
+    spliceAt = 2;
+  else if (values.length == 7 && values[3][0] == '/' && values[0][0] == values[4][0] && values[1][0] == values[5][0] && values[2][0] == values[6][0])
+    spliceAt = 3;
+  else if (values.length == 9 && values[4][0] == '/' && values[0][0] == values[5][0] && values[1][0] == values[6][0] && values[2][0] == values[7][0] && values[3][0] == values[8][0])
+    spliceAt = 4;
+
+  if (spliceAt) {
+    property.value.splice(spliceAt);
+    property.dirty = true;
+  }
+}
+
+function minifyFilter(property) {
+  if (property.value.length == 1) {
+    property.value[0][0] = property.value[0][0].replace(/progid:DXImageTransform\.Microsoft\.(Alpha|Chroma)(\W)/, function (match, filter, suffix) {
+      return filter.toLowerCase() + suffix;
+    });
+  }
+
+  property.value[0][0] = property.value[0][0]
+    .replace(/,(\S)/g, ', $1')
+    .replace(/ ?= ?/g, '=');
+}
+
+function minifyFont(property) {
+  var values = property.value;
+  var hasNumeral = FONT_NUMERAL_WEIGHTS.indexOf(values[0][0]) > -1 ||
+    values[1] && FONT_NUMERAL_WEIGHTS.indexOf(values[1][0]) > -1 ||
+    values[2] && FONT_NUMERAL_WEIGHTS.indexOf(values[2][0]) > -1;
+
+  if (hasNumeral)
+    return;
+
+  if (values[1] == '/')
+    return;
+
+  var normalCount = 0;
+  if (values[0][0] == 'normal')
+    normalCount++;
+  if (values[1] && values[1][0] == 'normal')
+    normalCount++;
+  if (values[2] && values[2][0] == 'normal')
+    normalCount++;
+
+  if (normalCount > 1)
+    return;
+
+  var toOptimize;
+  if (FONT_NAME_WEIGHTS_WITHOUT_NORMAL.indexOf(values[0][0]) > -1)
+    toOptimize = 0;
+  else if (values[1] && FONT_NAME_WEIGHTS_WITHOUT_NORMAL.indexOf(values[1][0]) > -1)
+    toOptimize = 1;
+  else if (values[2] && FONT_NAME_WEIGHTS_WITHOUT_NORMAL.indexOf(values[2][0]) > -1)
+    toOptimize = 2;
+  else if (FONT_NAME_WEIGHTS.indexOf(values[0][0]) > -1)
+    toOptimize = 0;
+  else if (values[1] && FONT_NAME_WEIGHTS.indexOf(values[1][0]) > -1)
+    toOptimize = 1;
+  else if (values[2] && FONT_NAME_WEIGHTS.indexOf(values[2][0]) > -1)
+    toOptimize = 2;
+
+  if (toOptimize !== undefined) {
+    property.value[toOptimize][0] = valueMinifiers['font-weight'](values[toOptimize][0]);
+    property.dirty = true;
+  }
+}
+
+function optimizeBody(properties, options) {
+  var property, name, value;
+  var _properties = wrapForOptimizing(properties);
+
+  for (var i = 0, l = _properties.length; i < l; i++) {
+    property = _properties[i];
+    name = property.name;
+
+    if (property.hack && (
+        (property.hack == 'star' || property.hack == 'underscore') && !options.compatibility.properties.iePrefixHack ||
+        property.hack == 'backslash' && !options.compatibility.properties.ieSuffixHack ||
+        property.hack == 'bang' && !options.compatibility.properties.ieBangHack))
+      property.unused = true;
+
+    if (name.indexOf('padding') === 0 && (isNegative(property, 0) || isNegative(property, 1) || isNegative(property, 2) || isNegative(property, 3)))
+      property.unused = true;
+
+    if (property.unused)
+      continue;
+
+    if (property.variable) {
+      if (property.block)
+        optimizeBody(property.value[0], options);
+      continue;
+    }
+
+    for (var j = 0, m = property.value.length; j < m; j++) {
+      value = property.value[j][0];
+
+      if (valueMinifiers[name])
+        value = valueMinifiers[name](value, j, m);
+
+      value = whitespaceMinifier(name, value);
+      value = precisionMinifier(name, value, options.precision);
+      value = pixelLengthMinifier(name, value, options.compatibility);
+      value = timeUnitMinifier(name, value);
+      value = zeroMinifier(name, value);
+      if (options.compatibility.properties.zeroUnits) {
+        value = zeroDegMinifier(name, value);
+        value = unitMinifier(name, value, options.unitsRegexp);
+      }
+      if (options.compatibility.properties.colors)
+        value = colorMininifier(name, value, options.compatibility);
+
+      property.value[j][0] = value;
+    }
+
+    multipleZerosMinifier(property);
+
+    if (name.indexOf('border') === 0 && name.indexOf('radius') > 0)
+      minifyBorderRadius(property);
+    else if (name == 'filter')
+      minifyFilter(property);
+    else if (name == 'font')
+      minifyFont(property);
+  }
+
+  restoreFromOptimizing(_properties, true);
+  removeUnused(_properties);
+}
+
+function cleanupCharsets(tokens) {
+  var hasCharset = false;
+
+  for (var i = 0, l = tokens.length; i < l; i++) {
+    var token = tokens[i];
+
+    if (token[0] != 'at-rule')
+      continue;
+
+    if (!CHARSET_REGEXP.test(token[1][0]))
+      continue;
+
+    if (hasCharset || token[1][0].indexOf(CHARSET_TOKEN) == -1) {
+      tokens.splice(i, 1);
+      i--;
+      l--;
+    } else {
+      hasCharset = true;
+      tokens.splice(i, 1);
+      tokens.unshift(['at-rule', [token[1][0].replace(CHARSET_REGEXP, CHARSET_TOKEN)]]);
+    }
+  }
+}
+
+function buildUnitRegexp(options) {
+  var units = ['px', 'em', 'ex', 'cm', 'mm', 'in', 'pt', 'pc', '%'];
+  var otherUnits = ['ch', 'rem', 'vh', 'vm', 'vmax', 'vmin', 'vw'];
+
+  otherUnits.forEach(function (unit) {
+    if (options.compatibility.units[unit])
+      units.push(unit);
+  });
+
+  return new RegExp('(^|\\s|\\(|,)0(?:' + units.join('|') + ')(\\W|$)', 'g');
+}
+
+function buildPrecision(options) {
+  var precision = {};
+
+  precision.value = options.roundingPrecision === undefined ?
+    DEFAULT_ROUNDING_PRECISION :
+    options.roundingPrecision;
+  precision.multiplier = Math.pow(10, precision.value);
+  precision.regexp = new RegExp('(\\d*\\.\\d{' + (precision.value + 1) + ',})px', 'g');
+
+  return precision;
+}
+
+function optimize(tokens, options, context) {
+  var ie7Hack = options.compatibility.selectors.ie7Hack;
+  var adjacentSpace = options.compatibility.selectors.adjacentSpace;
+  var spaceAfterClosingBrace = options.compatibility.properties.spaceAfterClosingBrace;
+  var mayHaveCharset = false;
+  var afterContent = false;
+
+  options.unitsRegexp = buildUnitRegexp(options);
+  options.precision = buildPrecision(options);
+
+  for (var i = 0, l = tokens.length; i < l; i++) {
+    var token = tokens[i];
+
+    switch (token[0]) {
+      case 'selector':
+        token[1] = cleanUpSelectors(token[1], !ie7Hack, adjacentSpace);
+        optimizeBody(token[2], options);
+        afterContent = true;
+        break;
+      case 'block':
+        cleanUpBlock(token[1], spaceAfterClosingBrace);
+        optimize(token[2], options, context);
+        afterContent = true;
+        break;
+      case 'flat-block':
+        cleanUpBlock(token[1], spaceAfterClosingBrace);
+        optimizeBody(token[2], options);
+        afterContent = true;
+        break;
+      case 'at-rule':
+        cleanUpAtRule(token[1]);
+        mayHaveCharset = true;
+    }
+
+    if (token[0] == 'at-rule' && IMPORT_REGEXP.test(token[1]) && afterContent) {
+      context.warnings.push('Ignoring @import rule "' + token[1] + '" as it appears after rules thus browsers will ignore them.');
+      token[1] = '';
+    }
+
+    if (token[1].length === 0 || (token[2] && token[2].length === 0)) {
+      tokens.splice(i, 1);
+      i--;
+      l--;
+    }
+  }
+
+  if (mayHaveCharset)
+    cleanupCharsets(tokens);
+}
+
+module.exports = optimize;

node_modules/clean-css/lib/source-maps/track.js

@@ -0,0 +1,119 @@
+var escapePrefix = '__ESCAPED_';
+
+function trackPrefix(value, context, interestingContent) {
+  if (!interestingContent && value.indexOf('\n') == -1) {
+    if (value.indexOf(escapePrefix) === 0) {
+      return value;
+    } else {
+      context.column += value.length;
+      return;
+    }
+  }
+
+  var withoutContent = 0;
+  var split = value.split('\n');
+  var total = split.length;
+  var shift = 0;
+
+  while (true) {
+    if (withoutContent == total - 1)
+      break;
+
+    var part = split[withoutContent];
+    if (/\S/.test(part))
+      break;
+
+    shift += part.length + 1;
+    withoutContent++;
+  }
+
+  context.line += withoutContent;
+  context.column = withoutContent > 0 ? 0 : context.column;
+  context.column += /^(\s)*/.exec(split[withoutContent])[0].length;
+
+  return value.substring(shift).trimLeft();
+}
+
+function sourceFor(originalMetadata, contextMetadata, context) {
+  var source = originalMetadata.source || contextMetadata.source;
+
+  if (source && context.resolvePath)
+    return context.resolvePath(contextMetadata.source, source);
+
+  return source;
+}
+
+function snapshot(data, context, fallbacks) {
+  var metadata = {
+    line: context.line,
+    column: context.column,
+    source: context.source
+  };
+  var sourceContent = null;
+  var sourceMetadata = context.sourceMapTracker.isTracking(metadata.source) ?
+    context.sourceMapTracker.originalPositionFor(metadata, data, fallbacks || 0) :
+    {};
+
+  metadata.line = sourceMetadata.line || metadata.line;
+  metadata.column = sourceMetadata.column || metadata.column;
+  metadata.source = sourceMetadata.sourceResolved ?
+    sourceMetadata.source :
+    sourceFor(sourceMetadata, metadata, context);
+
+  if (context.sourceMapInlineSources) {
+    var sourceMapSourcesContent = context.sourceMapTracker.sourcesContentFor(context.source);
+    sourceContent = sourceMapSourcesContent && sourceMapSourcesContent[metadata.source] ?
+      sourceMapSourcesContent :
+      context.sourceReader.sourceAt(context.source);
+  }
+
+  return sourceContent ?
+    [metadata.line, metadata.column, metadata.source, sourceContent] :
+    [metadata.line, metadata.column, metadata.source];
+}
+
+function trackSuffix(data, context) {
+  var parts = data.split('\n');
+
+  for (var i = 0, l = parts.length; i < l; i++) {
+    var part = parts[i];
+    var cursor = 0;
+
+    if (i > 0) {
+      context.line++;
+      context.column = 0;
+    }
+
+    while (true) {
+      var next = part.indexOf(escapePrefix, cursor);
+
+      if (next == -1) {
+        context.column += part.substring(cursor).length;
+        break;
+      }
+
+      context.column += next - cursor;
+      cursor += next - cursor;
+
+      var escaped = part.substring(next, part.indexOf('__', next + 1) + 2);
+      var encodedValues = escaped.substring(escaped.indexOf('(') + 1, escaped.indexOf(')')).split(',');
+      context.line += ~~encodedValues[0];
+      context.column = (~~encodedValues[0] === 0 ? context.column : 0) + ~~encodedValues[1];
+      cursor += escaped.length;
+    }
+  }
+}
+
+function track(data, context, snapshotMetadata, fallbacks) {
+  var untracked = trackPrefix(data, context, snapshotMetadata);
+  var metadata = snapshotMetadata ?
+    snapshot(untracked, context, fallbacks) :
+    [];
+
+  if (untracked)
+    trackSuffix(untracked, context);
+
+  return metadata;
+}
+
+module.exports = track;

node_modules/clean-css/lib/stringifier/helpers.js

@@ -0,0 +1,167 @@
+var lineBreak = require('os').EOL;
+
+var AT_RULE = 'at-rule';
+var PROPERTY_SEPARATOR = ';';
+
+function hasMoreProperties(tokens, index) {
+  for (var i = index, l = tokens.length; i < l; i++) {
+    if (typeof tokens[i] != 'string')
+      return true;
+  }
+
+  return false;
+}
+
+function supportsAfterClosingBrace(token) {
+  return token[0][0] == 'background' || token[0][0] == 'transform' || token[0][0] == 'src';
+}
+
+function afterClosingBrace(token, valueIndex) {
+  return token[valueIndex][0][token[valueIndex][0].length - 1] == ')' || token[valueIndex][0].indexOf('__ESCAPED_URL_CLEAN_CSS') === 0;
+}
+
+function afterComma(token, valueIndex) {
+  return token[valueIndex][0] == ',';
+}
+
+function afterSlash(token, valueIndex) {
+  return token[valueIndex][0] == '/';
+}
+
+function beforeComma(token, valueIndex) {
+  return token[valueIndex + 1] && token[valueIndex + 1][0] == ',';
+}
+
+function beforeSlash(token, valueIndex) {
+  return token[valueIndex + 1] && token[valueIndex + 1][0] == '/';
+}
+
+function inFilter(token) {
+  return token[0][0] == 'filter' || token[0][0] == '-ms-filter';
+}
+
+function inSpecialContext(token, valueIndex, context) {
+  return !context.spaceAfterClosingBrace && supportsAfterClosingBrace(token) && afterClosingBrace(token, valueIndex) ||
+    beforeSlash(token, valueIndex) ||
+    afterSlash(token, valueIndex) ||
+    beforeComma(token, valueIndex) ||
+    afterComma(token, valueIndex);
+}
+
+function selectors(tokens, context) {
+  var store = context.store;
+
+  for (var i = 0, l = tokens.length; i < l; i++) {
+    store(tokens[i], context);
+
+    if (i < l - 1)
+      store(',', context);
+  }
+}
+
+function body(tokens, context) {
+  for (var i = 0, l = tokens.length; i < l; i++) {
+    property(tokens, i, i == l - 1, context);
+  }
+}
+
+function property(tokens, position, isLast, context) {
+  var store = context.store;
+  var token = tokens[position];
+
+  if (typeof token == 'string') {
+    store(token, context);
+  } else if (token[0] == AT_RULE) {
+    propertyAtRule(token[1], isLast, context);
+  } else {
+    store(token[0], context);
+    store(':', context);
+    value(tokens, position, isLast, context);
+  }
+}
+
+function propertyAtRule(value, isLast, context) {
+  var store = context.store;
+
+  store(value, context);
+  if (!isLast)
+    store(PROPERTY_SEPARATOR, context);
+}
+
+function value(tokens, position, isLast, context) {
+  var store = context.store;
+  var token = tokens[position];
+  var isVariableDeclaration = token[0][0].indexOf('--') === 0;
+  var isBlockVariable = isVariableDeclaration && Array.isArray(token[1][0]);
+
+  if (isVariableDeclaration && isBlockVariable && atRulesOrProperties(token[1])) {
+    store('{', context);
+    body(token[1], context);
+    store('};', context);
+    return;
+  }
+
+  for (var j = 1, m = token.length; j < m; j++) {
+    store(token[j], context);
+
+    if (j < m - 1 && (inFilter(token) || !inSpecialContext(token, j, context))) {
+      store(' ', context);
+    } else if (j == m - 1 && !isLast && hasMoreProperties(tokens, position + 1)) {
+      store(PROPERTY_SEPARATOR, context);
+    }
+  }
+}
+
+function atRulesOrProperties(values) {
+  for (var i = 0, l = values.length; i < l; i++) {
+    if (values[i][0] == AT_RULE || Array.isArray(values[i][0]))
+      return true;
+  }
+
+  return false;
+}
+
+function all(tokens, context) {
+  var joinCharacter = context.keepBreaks ? lineBreak : '';
+  var store = context.store;
+
+  for (var i = 0, l = tokens.length; i < l; i++) {
+    var token = tokens[i];
+
+    switch (token[0]) {
+      case 'at-rule':
+      case 'text':
+        store(token[1][0], context);
+        store(joinCharacter, context);
+        break;
+      case 'block':
+        selectors([token[1]], context);
+        store('{', context);
+        all(token[2], context);
+        store('}', context);
+        store(joinCharacter, context);
+        break;
+      case 'flat-block':
+        selectors([token[1]], context);
+        store('{', context);
+        body(token[2], context);
+        store('}', context);
+        store(joinCharacter, context);
+        break;
+      default:
+        selectors(token[1], context);
+        store('{', context);
+        body(token[2], context);
+        store('}', context);
+        store(joinCharacter, context);
+    }
+  }
+}
+
+module.exports = {
+  all: all,
+  body: body,
+  property: property,
+  selectors: selectors,
+  value: value
+};

node_modules/clean-css/lib/stringifier/one-time.js

@@ -0,0 +1,50 @@
+var helpers = require('./helpers');
+
+function store(token, context) {
+  context.output.push(typeof token == 'string' ? token : token[0]);
+}
+
+function context() {
+  return {
+    output: [],
+    store: store
+  };
+}
+
+function all(tokens) {
+  var fakeContext = context();
+  helpers.all(tokens, fakeContext);
+  return fakeContext.output.join('');
+}
+
+function body(tokens) {
+  var fakeContext = context();
+  helpers.body(tokens, fakeContext);
+  return fakeContext.output.join('');
+}
+
+function property(tokens, position) {
+  var fakeContext = context();
+  helpers.property(tokens, position, true, fakeContext);
+  return fakeContext.output.join('');
+}
+
+function selectors(tokens) {
+  var fakeContext = context();
+  helpers.selectors(tokens, fakeContext);
+  return fakeContext.output.join('');
+}
+
+function value(tokens, position) {
+  var fakeContext = context();
+  helpers.value(tokens, position, true, fakeContext);
+  return fakeContext.output.join('');
+}
+
+module.exports = {
+  all: all,
+  body: body,
+  property: property,
+  selectors: selectors,
+  value: value
+};

node_modules/clean-css/lib/stringifier/simple.js

@@ -0,0 +1,22 @@
+var all = require('./helpers').all;
+
+function store(token, context) {
+  context.output.push(typeof token == 'string' ? token : token[0]);
+}
+
+function stringify(tokens, options, restoreCallback) {
+  var context = {
+    keepBreaks: options.keepBreaks,
+    output: [],
+    spaceAfterClosingBrace: options.compatibility.properties.spaceAfterClosingBrace,
+    store: store
+  };
+
+  all(tokens, context, false);
+
+  return {
+    styles: restoreCallback(context.output.join('')).trim()
+  };
+}
+
+module.exports = stringify;

node_modules/clean-css/lib/stringifier/source-maps.js

@@ -0,0 +1,96 @@
+var SourceMapGenerator = require('source-map').SourceMapGenerator;
+var all = require('./helpers').all;
+
+var isWindows = process.platform == 'win32';
+var unknownSource = '$stdin';
+
+function store(element, context) {
+  var fromString = typeof element == 'string';
+  var value = fromString ? element : element[0];
+
+  if (value.indexOf('_') > -1)
+    value = context.restore(value, prefixContentFrom(context.output));
+
+  track(value, fromString ? null : element, context);
+  context.output.push(value);
+}
+
+function prefixContentFrom(values) {
+  var content = [];
+
+  for (var i = values.length - 1; i >= 0; i--) {
+    var value = values[i];
+    content.unshift(value);
+
+    if (value == '{' || value == ';')
+      break;
+  }
+
+  return content.join('');
+}
+
+function track(value, element, context) {
+  if (element)
+    trackAllMappings(element, context);
+
+  var parts = value.split('\n');
+  context.line += parts.length - 1;
+  context.column = parts.length > 1 ? 0 : (context.column + parts.pop().length);
+}
+
+function trackAllMappings(element, context) {
+  var mapping = element[element.length - 1];
+
+  if (!Array.isArray(mapping))
+    return;
+
+  for (var i = 0, l = mapping.length; i < l; i++) {
+    trackMapping(mapping[i], context);
+  }
+}
+
+function trackMapping(mapping, context) {
+  var source = mapping[2] || unknownSource;
+
+  if (isWindows)
+    source = source.replace(/\\/g, '/');
+
+  context.outputMap.addMapping({
+    generated: {
+      line: context.line,
+      column: context.column
+    },
+    source: source,
+    original: {
+      line: mapping[0],
+      column: mapping[1]
+    }
+  });
+
+  if (mapping[3])
+    context.outputMap.setSourceContent(source, mapping[3][mapping[2]]);
+}
+
+function stringify(tokens, options, restoreCallback, inputMapTracker) {
+  var context = {
+    column: 0,
+    inputMapTracker: inputMapTracker,
+    keepBreaks: options.keepBreaks,
+    line: 1,
+    output: [],
+    outputMap: new SourceMapGenerator(),
+    restore: restoreCallback,
+    sourceMapInlineSources: options.sourceMapInlineSources,
+    spaceAfterClosingBrace: options.compatibility.properties.spaceAfterClosingBrace,
+    store: store
+  };
+
+  all(tokens, context, false);
+
+  return {
+    sourceMap: context.outputMap,
+    styles: context.output.join('').trim()
+  };
+}
+
+module.exports = stringify;

node_modules/clean-css/lib/text/comments-processor.js

@@ -0,0 +1,131 @@
+var EscapeStore = require('./escape-store');
+var QuoteScanner = require('../utils/quote-scanner');
+
+var SPECIAL_COMMENT_PREFIX = '/*!';
+var COMMENT_PREFIX = '/*';
+var COMMENT_SUFFIX = '*/';
+
+var lineBreak = require('os').EOL;
+
+function CommentsProcessor(context, keepSpecialComments, keepBreaks, saveWaypoints) {
+  this.comments = new EscapeStore('COMMENT');
+  this.specialComments = new EscapeStore('COMMENT_SPECIAL');
+
+  this.context = context;
+  this.restored = 0;
+  this.keepAll = keepSpecialComments == '*';
+  this.keepOne = keepSpecialComments == '1' || keepSpecialComments === 1;
+  this.keepBreaks = keepBreaks;
+  this.saveWaypoints = saveWaypoints;
+}
+
+function quoteScannerFor(data) {
+  var quoteMap = [];
+  new QuoteScanner(data).each(function (quotedString, _, startsAt) {
+    quoteMap.push([startsAt, startsAt + quotedString.length]);
+  });
+
+  return function (position) {
+    for (var i = 0, l = quoteMap.length; i < l; i++) {
+      if (quoteMap[i][0] < position && quoteMap[i][1] > position)
+        return true;
+    }
+
+    return false;
+  };
+}
+
+CommentsProcessor.prototype.escape = function (data) {
+  var tempData = [];
+  var nextStart = 0;
+  var nextEnd = 0;
+  var cursor = 0;
+  var indent = 0;
+  var breaksCount;
+  var lastBreakAt;
+  var newIndent;
+  var isQuotedAt = quoteScannerFor(data);
+  var saveWaypoints = this.saveWaypoints;
+
+  for (; nextEnd < data.length;) {
+    nextStart = data.indexOf(COMMENT_PREFIX, cursor);
+    if (nextStart == -1)
+      break;
+
+    if (isQuotedAt(nextStart)) {
+      tempData.push(data.substring(cursor, nextStart + COMMENT_PREFIX.length));
+      cursor = nextStart + COMMENT_PREFIX.length;
+      continue;
+    }
+
+    nextEnd = data.indexOf(COMMENT_SUFFIX, nextStart + COMMENT_PREFIX.length);
+    if (nextEnd == -1) {
+      this.context.warnings.push('Broken comment: \'' + data.substring(nextStart) + '\'.');
+      nextEnd = data.length - 2;
+    }
+
+    tempData.push(data.substring(cursor, nextStart));
+
+    var comment = data.substring(nextStart, nextEnd + COMMENT_SUFFIX.length);
+    var isSpecialComment = comment.indexOf(SPECIAL_COMMENT_PREFIX) === 0;
+
+    if (saveWaypoints) {
+      breaksCount = comment.split(lineBreak).length - 1;
+      lastBreakAt = comment.lastIndexOf(lineBreak);
+      newIndent = lastBreakAt > 0 ?
+        comment.substring(lastBreakAt + lineBreak.length).length :
+        indent + comment.length;
+    }
+
+    if (saveWaypoints || isSpecialComment) {
+      var metadata = saveWaypoints ? [breaksCount, newIndent] : null;
+      var placeholder = isSpecialComment ?
+        this.specialComments.store(comment, metadata) :
+        this.comments.store(comment, metadata);
+      tempData.push(placeholder);
+    }
+
+    if (saveWaypoints)
+      indent = newIndent + 1;
+    cursor = nextEnd + COMMENT_SUFFIX.length;
+  }
+
+  return tempData.length > 0 ?
+    tempData.join('') + data.substring(cursor, data.length) :
+    data;
+};
+
+function restore(context, data, from, isSpecial) {
+  var tempData = [];
+  var cursor = 0;
+
+  for (; cursor < data.length;) {
+    var nextMatch = from.nextMatch(data, cursor);
+    if (nextMatch.start < 0)
+      break;
+
+    tempData.push(data.substring(cursor, nextMatch.start));
+    var comment = from.restore(nextMatch.match);
+
+    if (isSpecial && (context.keepAll || (context.keepOne && context.restored === 0))) {
+      context.restored++;
+      tempData.push(comment);
+
+      cursor = nextMatch.end;
+    } else {
+      cursor = nextMatch.end + (context.keepBreaks && data.substring(nextMatch.end, nextMatch.end + lineBreak.length) == lineBreak ? lineBreak.length : 0);
+    }
+  }
+
+  return tempData.length > 0 ?
+    tempData.join('') + data.substring(cursor, data.length) :
+    data;
+}
+
+CommentsProcessor.prototype.restore = function (data) {
+  data = restore(this, data, this.comments, false);
+  data = restore(this, data, this.specialComments, true);
+  return data;
+};
+
+module.exports = CommentsProcessor;

node_modules/clean-css/lib/text/escape-store.js

@@ -0,0 +1,53 @@
+var placeholderBrace = '__';
+
+function EscapeStore(placeholderRoot) {
+  this.placeholderRoot = 'ESCAPED_' + placeholderRoot + '_CLEAN_CSS';
+  this.placeholderToData = {};
+  this.dataToPlaceholder = {};
+  this.count = 0;
+  this.restoreMatcher = new RegExp(this.placeholderRoot + '(\\d+)');
+}
+
+EscapeStore.prototype._nextPlaceholder = function (metadata) {
+  return {
+    index: this.count,
+    value: placeholderBrace + this.placeholderRoot + this.count++ + metadata + placeholderBrace
+  };
+};
+
+EscapeStore.prototype.store = function (data, metadata) {
+  var encodedMetadata = metadata ?
+    '(' + metadata.join(',') + ')' :
+    '';
+  var placeholder = this.dataToPlaceholder[data];
+
+  if (!placeholder) {
+    var nextPlaceholder = this._nextPlaceholder(encodedMetadata);
+    placeholder = nextPlaceholder.value;
+    this.placeholderToData[nextPlaceholder.index] = data;
+    this.dataToPlaceholder[data] = nextPlaceholder.value;
+  }
+
+  if (metadata)
+    placeholder = placeholder.replace(/\([^\)]+\)/, encodedMetadata);
+
+  return placeholder;
+};
+
+EscapeStore.prototype.nextMatch = function (data, cursor) {
+  var next = {};
+
+  next.start = data.indexOf(this.placeholderRoot, cursor) - placeholderBrace.length;
+  next.end = data.indexOf(placeholderBrace, next.start + placeholderBrace.length) + placeholderBrace.length;
+  if (next.start > -1 && next.end > -1)
+    next.match = data.substring(next.start, next.end);
+
+  return next;
+};
+
+EscapeStore.prototype.restore = function (placeholder) {
+  var index = this.restoreMatcher.exec(placeholder)[1];
+  return this.placeholderToData[index];
+};
+
+module.exports = EscapeStore;

node_modules/clean-css/lib/text/expressions-processor.js

@@ -0,0 +1,117 @@
+var EscapeStore = require('./escape-store');
+
+var EXPRESSION_NAME = 'expression';
+var EXPRESSION_START = '(';
+var EXPRESSION_END = ')';
+var EXPRESSION_PREFIX = EXPRESSION_NAME + EXPRESSION_START;
+var BODY_START = '{';
+var BODY_END = '}';
+
+var lineBreak = require('os').EOL;
+
+function findEnd(data, start) {
+  var end = start + EXPRESSION_NAME.length;
+  var level = 0;
+  var quoted = false;
+  var braced = false;
+
+  while (true) {
+    var current = data[end++];
+
+    if (quoted) {
+      quoted = current != '\'' && current != '"';
+    } else {
+      quoted = current == '\'' || current == '"';
+
+      if (current == EXPRESSION_START)
+        level++;
+      if (current == EXPRESSION_END)
+        level--;
+      if (current == BODY_START)
+        braced = true;
+      if (current == BODY_END && !braced && level == 1) {
+        end--;
+        level--;
+      }
+    }
+
+    if (level === 0 && current == EXPRESSION_END)
+      break;
+    if (!current) {
+      end = data.substring(0, end).lastIndexOf(BODY_END);
+      break;
+    }
+  }
+
+  return end;
+}
+
+function ExpressionsProcessor(saveWaypoints) {
+  this.expressions = new EscapeStore('EXPRESSION');
+  this.saveWaypoints = saveWaypoints;
+}
+
+ExpressionsProcessor.prototype.escape = function (data) {
+  var nextStart = 0;
+  var nextEnd = 0;
+  var cursor = 0;
+  var tempData = [];
+  var indent = 0;
+  var breaksCount;
+  var lastBreakAt;
+  var newIndent;
+  var saveWaypoints = this.saveWaypoints;
+
+  for (; nextEnd < data.length;) {
+    nextStart = data.indexOf(EXPRESSION_PREFIX, nextEnd);
+    if (nextStart == -1)
+      break;
+
+    nextEnd = findEnd(data, nextStart);
+
+    var expression = data.substring(nextStart, nextEnd);
+    if (saveWaypoints) {
+      breaksCount = expression.split(lineBreak).length - 1;
+      lastBreakAt = expression.lastIndexOf(lineBreak);
+      newIndent = lastBreakAt > 0 ?
+        expression.substring(lastBreakAt + lineBreak.length).length :
+        indent + expression.length;
+    }
+
+    var metadata = saveWaypoints ? [breaksCount, newIndent] : null;
+    var placeholder = this.expressions.store(expression, metadata);
+    tempData.push(data.substring(cursor, nextStart));
+    tempData.push(placeholder);
+
+    if (saveWaypoints)
+      indent = newIndent + 1;
+    cursor = nextEnd;
+  }
+
+  return tempData.length > 0 ?
+    tempData.join('') + data.substring(cursor, data.length) :
+    data;
+};
+
+ExpressionsProcessor.prototype.restore = function (data) {
+  var tempData = [];
+  var cursor = 0;
+
+  for (; cursor < data.length;) {
+    var nextMatch = this.expressions.nextMatch(data, cursor);
+    if (nextMatch.start < 0)
+      break;
+
+    tempData.push(data.substring(cursor, nextMatch.start));
+    var comment = this.expressions.restore(nextMatch.match);
+    tempData.push(comment);
+
+    cursor = nextMatch.end;
+  }
+
+  return tempData.length > 0 ?
+    tempData.join('') + data.substring(cursor, data.length) :
+    data;
+};
+
+module.exports = ExpressionsProcessor;

node_modules/clean-css/lib/text/free-text-processor.js

@@ -0,0 +1,98 @@
+var EscapeStore = require('./escape-store');
+var QuoteScanner = require('../utils/quote-scanner');
+
+var lineBreak = require('os').EOL;
+
+function FreeTextProcessor(saveWaypoints) {
+  this.matches = new EscapeStore('FREE_TEXT');
+  this.saveWaypoints = saveWaypoints;
+}
+
+// Strip content tags by replacing them by the a special
+// marker for further restoring. It's done via string scanning
+// instead of regexps to speed up the process.
+FreeTextProcessor.prototype.escape = function (data) {
+  var self = this;
+  var breaksCount;
+  var lastBreakAt;
+  var indent;
+  var metadata;
+  var saveWaypoints = this.saveWaypoints;
+
+  return new QuoteScanner(data).each(function (match, store) {
+    if (saveWaypoints) {
+      breaksCount = match.split(lineBreak).length - 1;
+      lastBreakAt = match.lastIndexOf(lineBreak);
+      indent = lastBreakAt > 0 ?
+        match.substring(lastBreakAt + lineBreak.length).length :
+        match.length;
+      metadata = [breaksCount, indent];
+    }
+
+    var placeholder = self.matches.store(match, metadata);
+    store.push(placeholder);
+  });
+};
+
+function normalize(text, data, prefixContext, cursor) {
+  // FIXME: this is even a bigger hack now - see #407
+  var searchIn = data;
+  if (prefixContext) {
+    searchIn = prefixContext + data.substring(0, data.indexOf('__ESCAPED_FREE_TEXT_CLEAN_CSS'));
+    cursor = searchIn.length;
+  }
+
+  var lastSemicolon = searchIn.lastIndexOf(';', cursor);
+  var lastOpenBrace = searchIn.lastIndexOf('{', cursor);
+  var lastOne = 0;
+
+  if (lastSemicolon > -1 && lastOpenBrace > -1)
+    lastOne = Math.max(lastSemicolon, lastOpenBrace);
+  else if (lastSemicolon == -1)
+    lastOne = lastOpenBrace;
+  else
+    lastOne = lastSemicolon;
+
+  var context = searchIn.substring(lastOne + 1, cursor);
+
+  if (/\[[\w\d\-]+[\*\|\~\^\$]?=$/.test(context)) {
+    text = text
+      .replace(/\\\n|\\\r\n/g, '')
+      .replace(/\n|\r\n/g, '');
+  }
+
+  if (/^['"][a-zA-Z][a-zA-Z\d\-_]+['"]$/.test(text) && !/format\($/.test(context)) {
+    var isFont = /^(font|font\-family):/.test(context);
+    var isAttribute = /\[[\w\d\-]+[\*\|\~\^\$]?=$/.test(context);
+    var isKeyframe = /@(-moz-|-o-|-webkit-)?keyframes /.test(context);
+    var isAnimation = /^(-moz-|-o-|-webkit-)?animation(-name)?:/.test(context);
+
+    if (isFont || isAttribute || isKeyframe || isAnimation)
+      text = text.substring(1, text.length - 1);
+  }
+
+  return text;
+}
+
+FreeTextProcessor.prototype.restore = function (data, prefixContext) {
+  var tempData = [];
+  var cursor = 0;
+
+  for (; cursor < data.length;) {
+    var nextMatch = this.matches.nextMatch(data, cursor);
+    if (nextMatch.start < 0)
+      break;
+
+    tempData.push(data.substring(cursor, nextMatch.start));
+    var text = normalize(this.matches.restore(nextMatch.match), data, prefixContext, nextMatch.start);
+    tempData.push(text);
+
+    cursor = nextMatch.end;
+  }
+
+  return tempData.length > 0 ?
+    tempData.join('') + data.substring(cursor, data.length) :
+    data;
+};
+
+module.exports = FreeTextProcessor;

node_modules/clean-css/lib/text/urls-processor.js

@@ -0,0 +1,75 @@
+var EscapeStore = require('./escape-store');
+var reduceUrls = require('../urls/reduce');
+
+var lineBreak = require('os').EOL;
+
+function UrlsProcessor(context, saveWaypoints, keepUrlQuotes) {
+  this.urls = new EscapeStore('URL');
+  this.context = context;
+  this.saveWaypoints = saveWaypoints;
+  this.keepUrlQuotes = keepUrlQuotes;
+}
+
+// Strip urls by replacing them by a special
+// marker for further restoring. It's done via string scanning
+// instead of regexps to speed up the process.
+UrlsProcessor.prototype.escape = function (data) {
+  var breaksCount;
+  var lastBreakAt;
+  var indent;
+  var saveWaypoints = this.saveWaypoints;
+  var self = this;
+
+  return reduceUrls(data, this.context, function (url, tempData) {
+    if (saveWaypoints) {
+      breaksCount = url.split(lineBreak).length - 1;
+      lastBreakAt = url.lastIndexOf(lineBreak);
+      indent = lastBreakAt > 0 ?
+        url.substring(lastBreakAt + lineBreak.length).length :
+        url.length;
+    }
+
+    var placeholder = self.urls.store(url, saveWaypoints ? [breaksCount, indent] : null);
+    tempData.push(placeholder);
+  });
+};
+
+function normalize(url, keepUrlQuotes) {
+  url = url
+    .replace(/^url/gi, 'url')
+    .replace(/\\?\n|\\?\r\n/g, '')
+    .replace(/(\s{2,}|\s)/g, ' ')
+    .replace(/^url\((['"])? /, 'url($1')
+    .replace(/ (['"])?\)$/, '$1)');
+
+  if (/url\(".*'.*"\)/.test(url) || /url\('.*".*'\)/.test(url))
+    return url;
+
+  if (!keepUrlQuotes && !/^['"].+['"]$/.test(url) && !/url\(.*[\s\(\)].*\)/.test(url) && !/url\(['"]data:[^;]+;charset/.test(url))
+    url = url.replace(/["']/g, '');
+
+  return url;
+}
+
+UrlsProcessor.prototype.restore = function (data) {
+  var tempData = [];
+  var cursor = 0;
+
+  for (; cursor < data.length;) {
+    var nextMatch = this.urls.nextMatch(data, cursor);
+    if (nextMatch.start < 0)
+      break;
+
+    tempData.push(data.substring(cursor, nextMatch.start));
+    var url = normalize(this.urls.restore(nextMatch.match), this.keepUrlQuotes);
+    tempData.push(url);
+
+    cursor = nextMatch.end;
+  }
+
+  return tempData.length > 0 ?
+    tempData.join('') + data.substring(cursor, data.length) :
+    data;
+};
+
+module.exports = UrlsProcessor;

node_modules/clean-css/lib/tokenizer/extract-properties.js

@@ -0,0 +1,193 @@
+var split = require('../utils/split');
+
+var COMMA = ',';
+var FORWARD_SLASH = '/';
+
+var AT_RULE = 'at-rule';
+
+var IMPORTANT_WORD = 'important';
+var IMPORTANT_TOKEN = '!'+IMPORTANT_WORD;
+var IMPORTANT_WORD_MATCH = new RegExp('^'+IMPORTANT_WORD+'$', 'i');
+var IMPORTANT_TOKEN_MATCH = new RegExp('^'+IMPORTANT_TOKEN+'$', 'i');
+
+function selectorName(value) {
+  return value[0];
+}
+
+function noop() {}
+
+function withoutComments(string, into, heading, context) {
+  var matcher = heading ? /^__ESCAPED_COMMENT_/ : /__ESCAPED_COMMENT_/;
+  var track = heading ? context.track : noop; // don't track when comment not in a heading as we do it later in `trackComments`
+
+  while (matcher.test(string)) {
+    var startOfComment = string.indexOf('__');
+    var endOfComment = string.indexOf('__', startOfComment + 1) + 2;
+    var comment = string.substring(startOfComment, endOfComment);
+    string = string.substring(0, startOfComment) + string.substring(endOfComment);
+
+    track(comment);
+    into.push(comment);
+  }
+
+  return string;
+}
+
+function withoutHeadingComments(string, into, context) {
+  return withoutComments(string, into, true, context);
+}
+
+function withoutInnerComments(string, into, context) {
+  return withoutComments(string, into, false, context);
+}
+
+function trackComments(comments, into, context) {
+  for (var i = 0, l = comments.length; i < l; i++) {
+    context.track(comments[i]);
+    into.push(comments[i]);
+  }
+}
+
+function extractProperties(string, selectors, context) {
+  var list = [];
+  var innerComments = [];
+  var valueSeparator = /[\s,\/]/;
+
+  if (typeof string != 'string')
+    return [];
+
+  if (string.indexOf(')') > -1)
+    string = string.replace(/\)([^\s_;:,\)])/g, context.sourceMap ? ') __ESCAPED_COMMENT_CLEAN_CSS(0,-1)__ $1' : ') $1');
+
+  if (string.indexOf('ESCAPED_URL_CLEAN_CSS') > -1)
+    string = string.replace(/(ESCAPED_URL_CLEAN_CSS[^_]+?__)/g, context.sourceMap ? '$1 __ESCAPED_COMMENT_CLEAN_CSS(0,-1)__ ' : '$1 ');
+
+  var candidates = split(string, ';', false, '{', '}');
+
+  for (var i = 0, l = candidates.length; i < l; i++) {
+    var candidate = candidates[i];
+    var firstColonAt = candidate.indexOf(':');
+
+    var atRule = candidate.trim()[0] == '@';
+    if (atRule) {
+      context.track(candidate);
+      list.push([AT_RULE, candidate.trim()]);
+      continue;
+    }
+
+    if (firstColonAt == -1) {
+      context.track(candidate);
+      if (candidate.indexOf('__ESCAPED_COMMENT_SPECIAL') > -1)
+        list.push(candidate.trim());
+      continue;
+    }
+
+    if (candidate.indexOf('{') > 0 && candidate.indexOf('{') < firstColonAt) {
+      context.track(candidate);
+      continue;
+    }
+
+    var body = [];
+    var name = candidate.substring(0, firstColonAt);
+
+    innerComments = [];
+
+    if (name.indexOf('__ESCAPED_COMMENT') > -1)
+      name = withoutHeadingComments(name, list, context);
+
+    if (name.indexOf('__ESCAPED_COMMENT') > -1)
+      name = withoutInnerComments(name, innerComments, context);
+
+    body.push([name.trim()].concat(context.track(name, true)));
+    context.track(':');
+
+    trackComments(innerComments, list, context);
+
+    var firstBraceAt = candidate.indexOf('{');
+    var isVariable = name.trim().indexOf('--') === 0;
+    if (isVariable && firstBraceAt > 0) {
+      var blockPrefix = candidate.substring(firstColonAt + 1, firstBraceAt + 1);
+      var blockSuffix = candidate.substring(candidate.indexOf('}'));
+      var blockContent = candidate.substring(firstBraceAt + 1, candidate.length - blockSuffix.length);
+
+      context.track(blockPrefix);
+      body.push(extractProperties(blockContent, selectors, context));
+      list.push(body);
+      context.track(blockSuffix);
+      context.track(i < l - 1 ? ';' : '');
+
+      continue;
+    }
+
+    var values = split(candidate.substring(firstColonAt + 1), valueSeparator, true);
+
+    if (values.length == 1 && values[0] === '') {
+      context.warnings.push('Empty property \'' + name + '\' inside \'' + selectors.filter(selectorName).join(',') + '\' selector. Ignoring.');
+      continue;
+    }
+
+    for (var j = 0, m = values.length; j < m; j++) {
+      var value = values[j];
+      var trimmed = value.trim();
+
+      if (trimmed.length === 0)
+        continue;
+
+      var lastCharacter = trimmed[trimmed.length - 1];
+      var endsWithNonSpaceSeparator = trimmed.length > 1 && (lastCharacter == COMMA || lastCharacter == FORWARD_SLASH);
+
+      if (endsWithNonSpaceSeparator)
+        trimmed = trimmed.substring(0, trimmed.length - 1);
+
+      if (trimmed.indexOf('__ESCAPED_COMMENT_CLEAN_CSS(0,-') > -1) {
+        context.track(trimmed);
+        continue;
+      }
+
+      innerComments = [];
+
+      if (trimmed.indexOf('__ESCAPED_COMMENT') > -1)
+        trimmed = withoutHeadingComments(trimmed, list, context);
+
+      if (trimmed.indexOf('__ESCAPED_COMMENT') > -1)
+        trimmed = withoutInnerComments(trimmed, innerComments, context);
+
+      if (trimmed.length === 0) {
+        trackComments(innerComments, list, context);
+        continue;
+      }
+
+      var pos = body.length - 1;
+      if (IMPORTANT_WORD_MATCH.test(trimmed) && body[pos][0] == '!') {
+        context.track(trimmed);
+        body[pos - 1][0] += IMPORTANT_TOKEN;
+        body.pop();
+        continue;
+      }
+
+      if (IMPORTANT_TOKEN_MATCH.test(trimmed) || (IMPORTANT_WORD_MATCH.test(trimmed) && body[pos][0][body[pos][0].length - 1] == '!')) {
+        context.track(trimmed);
+        body[pos][0] += trimmed;
+        continue;
+      }
+
+      body.push([trimmed].concat(context.track(value, true)));
+
+      trackComments(innerComments, list, context);
+
+      if (endsWithNonSpaceSeparator) {
+        body.push([lastCharacter]);
+        context.track(lastCharacter);
+      }
+    }
+
+    if (i < l - 1)
+      context.track(';');
+
+    list.push(body);
+  }
+
+  return list;
+}
+
+module.exports = extractProperties;

node_modules/clean-css/lib/tokenizer/extract-selectors.js

@@ -0,0 +1,17 @@
+var split = require('../utils/split');
+
+function extractSelectors(string, context) {
+  var list = [];
+  var metadata;
+  var selectors = split(string, ',');
+
+  for (var i = 0, l = selectors.length; i < l; i++) {
+    metadata = context.track(selectors[i], true, i);
+    context.track(',');
+    list.push([selectors[i].trim()].concat(metadata));
+  }
+
+  return list;
+}
+
+module.exports = extractSelectors;

node_modules/clean-css/lib/tokenizer/tokenize.js

@@ -0,0 +1,268 @@
+var extractProperties = require('./extract-properties');
+var extractSelectors = require('./extract-selectors');
+var track = require('../source-maps/track');
+var split = require('../utils/split');
+
+var path = require('path');
+
+var flatBlock = /(@(font\-face|page|\-ms\-viewport|\-o\-viewport|viewport|counter\-style)|\\@.+?)/;
+
+function tokenize(data, outerContext) {
+  var chunks = split(normalize(data), '}', true, '{', '}');
+  if (chunks.length === 0)
+    return [];
+
+  var context = {
+    chunk: chunks.shift(),
+    chunks: chunks,
+    column: 0,
+    cursor: 0,
+    line: 1,
+    mode: 'top',
+    resolvePath: outerContext.options.explicitTarget ?
+      relativePathResolver(outerContext.options.root, outerContext.options.target) :
+      null,
+    source: undefined,
+    sourceMap: outerContext.options.sourceMap,
+    sourceMapInlineSources: outerContext.options.sourceMapInlineSources,
+    sourceMapTracker: outerContext.inputSourceMapTracker,
+    sourceReader: outerContext.sourceReader,
+    sourceTracker: outerContext.sourceTracker,
+    state: [],
+    track: outerContext.options.sourceMap ?
+      function (data, snapshotMetadata, fallbacks) { return [[track(data, context, snapshotMetadata, fallbacks)]]; } :
+      function () { return []; },
+    warnings: outerContext.warnings
+  };
+
+  return intoTokens(context);
+}
+
+function normalize(data) {
+  return data.replace(/\r\n/g, '\n');
+}
+
+function relativePathResolver(root, target) {
+  var rebaseTo = path.relative(root, target);
+
+  return function (relativeTo, sourcePath) {
+    return relativeTo != sourcePath ?
+      path.normalize(path.join(path.relative(rebaseTo, path.dirname(relativeTo)), sourcePath)) :
+      sourcePath;
+  };
+}
+
+function whatsNext(context) {
+  var mode = context.mode;
+  var chunk = context.chunk;
+  var closest;
+
+  if (chunk.length == context.cursor) {
+    if (context.chunks.length === 0)
+      return null;
+
+    context.chunk = chunk = context.chunks.shift();
+    context.cursor = 0;
+  }
+
+  if (mode == 'body') {
+    if (chunk[context.cursor] == '}')
+      return [context.cursor, 'bodyEnd'];
+
+    if (chunk.indexOf('}', context.cursor) == -1)
+      return null;
+
+    closest = context.cursor + split(chunk.substring(context.cursor - 1), '}', true, '{', '}')[0].length - 2;
+    return [closest, 'bodyEnd'];
+  }
+
+  var nextSpecial = chunk.indexOf('@', context.cursor);
+  var nextEscape = chunk.indexOf('__ESCAPED_', context.cursor);
+  var nextBodyStart = chunk.indexOf('{', context.cursor);
+  var nextBodyEnd = chunk.indexOf('}', context.cursor);
+
+  if (nextSpecial > -1 && context.cursor > 0 && !/\s|\{|\}|\/|_|,|;/.test(chunk.substring(nextSpecial - 1, nextSpecial))) {
+    nextSpecial = -1;
+  }
+
+  if (nextEscape > -1 && /\S/.test(chunk.substring(context.cursor, nextEscape)))
+    nextEscape = -1;
+
+  closest = nextSpecial;
+  if (closest == -1 || (nextEscape > -1 && nextEscape < closest))
+    closest = nextEscape;
+  if (closest == -1 || (nextBodyStart > -1 && nextBodyStart < closest))
+    closest = nextBodyStart;
+  if (closest == -1 || (nextBodyEnd > -1 && nextBodyEnd < closest))
+    closest = nextBodyEnd;
+
+  if (closest == -1)
+    return;
+  if (nextEscape === closest)
+    return [closest, 'escape'];
+  if (nextBodyStart === closest)
+    return [closest, 'bodyStart'];
+  if (nextBodyEnd === closest)
+    return [closest, 'bodyEnd'];
+  if (nextSpecial === closest)
+    return [closest, 'special'];
+}
+
+function intoTokens(context) {
+  var chunk = context.chunk;
+  var tokenized = [];
+  var newToken;
+  var value;
+
+  while (true) {
+    var next = whatsNext(context);
+    if (!next) {
+      var whatsLeft = context.chunk.substring(context.cursor);
+      if (whatsLeft.trim().length > 0) {
+        if (context.mode == 'body') {
+          context.warnings.push('Missing \'}\' after \'' + whatsLeft + '\'. Ignoring.');
+        } else {
+          tokenized.push(['text', [whatsLeft]]);
+        }
+        context.cursor += whatsLeft.length;
+      }
+      break;
+    }
+
+    var nextSpecial = next[0];
+    var what = next[1];
+    var nextEnd;
+    var oldMode;
+
+    chunk = context.chunk;
+
+    if (context.cursor != nextSpecial && what != 'bodyEnd') {
+      var spacing = chunk.substring(context.cursor, nextSpecial);
+      var leadingWhitespace = /^\s+/.exec(spacing);
+
+      if (leadingWhitespace) {
+        context.cursor += leadingWhitespace[0].length;
+        context.track(leadingWhitespace[0]);
+      }
+    }
+
+    if (what == 'special') {
+      var firstOpenBraceAt = chunk.indexOf('{', nextSpecial);
+      var firstSemicolonAt = chunk.indexOf(';', nextSpecial);
+      var isSingle = firstSemicolonAt > -1 && (firstOpenBraceAt == -1 || firstSemicolonAt < firstOpenBraceAt);
+      var isBroken = firstOpenBraceAt == -1 && firstSemicolonAt == -1;
+      if (isBroken) {
+        context.warnings.push('Broken declaration: \'' + chunk.substring(context.cursor) +  '\'.');
+        context.cursor = chunk.length;
+      } else if (isSingle) {
+        nextEnd = chunk.indexOf(';', nextSpecial + 1);
+        value = chunk.substring(context.cursor, nextEnd + 1);
+
+        tokenized.push([
+          'at-rule',
+          [value].concat(context.track(value, true))
+        ]);
+
+        context.track(';');
+        context.cursor = nextEnd + 1;
+      } else {
+        nextEnd = chunk.indexOf('{', nextSpecial + 1);
+        value = chunk.substring(context.cursor, nextEnd);
+
+        var trimmedValue = value.trim();
+        var isFlat = flatBlock.test(trimmedValue);
+        oldMode = context.mode;
+        context.cursor = nextEnd + 1;
+        context.mode = isFlat ? 'body' : 'block';
+
+        newToken = [
+          isFlat ? 'flat-block' : 'block'
+        ];
+
+        newToken.push([trimmedValue].concat(context.track(value, true)));
+        context.track('{');
+        newToken.push(intoTokens(context));
+
+        if (typeof newToken[2] == 'string')
+          newToken[2] = extractProperties(newToken[2], [[trimmedValue]], context);
+
+        context.mode = oldMode;
+        context.track('}');
+
+        tokenized.push(newToken);
+      }
+    } else if (what == 'escape') {
+      nextEnd = chunk.indexOf('__', nextSpecial + 1);
+      var escaped = chunk.substring(context.cursor, nextEnd + 2);
+      var isStartSourceMarker = !!context.sourceTracker.nextStart(escaped);
+      var isEndSourceMarker = !!context.sourceTracker.nextEnd(escaped);
+
+      if (isStartSourceMarker) {
+        context.track(escaped);
+        context.state.push({
+          source: context.source,
+          line: context.line,
+          column: context.column
+        });
+        context.source = context.sourceTracker.nextStart(escaped).filename;
+        context.line = 1;
+        context.column = 0;
+      } else if (isEndSourceMarker) {
+        var oldState = context.state.pop();
+        context.source = oldState.source;
+        context.line = oldState.line;
+        context.column = oldState.column;
+        context.track(escaped);
+      } else {
+        if (escaped.indexOf('__ESCAPED_COMMENT_SPECIAL') === 0)
+          tokenized.push(['text', [escaped]]);
+
+        context.track(escaped);
+      }
+
+      context.cursor = nextEnd + 2;
+    } else if (what == 'bodyStart') {
+      var selectors = extractSelectors(chunk.substring(context.cursor, nextSpecial), context);
+
+      oldMode = context.mode;
+      context.cursor = nextSpecial + 1;
+      context.mode = 'body';
+
+      var body = extractProperties(intoTokens(context), selectors, context);
+
+      context.track('{');
+      context.mode = oldMode;
+
+      tokenized.push([
+        'selector',
+        selectors,
+        body
+      ]);
+    } else if (what == 'bodyEnd') {
+      // extra closing brace at the top level can be safely ignored
+      if (context.mode == 'top') {
+        var at = context.cursor;
+        var warning = chunk[context.cursor] == '}' ?
+          'Unexpected \'}\' in \'' + chunk.substring(at - 20, at + 20) + '\'. Ignoring.' :
+          'Unexpected content: \'' + chunk.substring(at, nextSpecial + 1) + '\'. Ignoring.';
+
+        context.warnings.push(warning);
+        context.cursor = nextSpecial + 1;
+        continue;
+      }
+
+      if (context.mode == 'block')
+        context.track(chunk.substring(context.cursor, nextSpecial));
+      if (context.mode != 'block')
+        tokenized = chunk.substring(context.cursor, nextSpecial);
+
+      context.cursor = nextSpecial + 1;
+
+      break;
+    }
+  }
+
+  return tokenized;
+}
+
+module.exports = tokenize;

node_modules/clean-css/lib/urls/rebase.js

@@ -0,0 +1,30 @@
+var path = require('path');
+
+var rewriteUrls = require('./rewrite');
+
+function rebaseUrls(data, context) {
+  var rebaseOpts = {
+    absolute: context.options.explicitRoot,
+    relative: !context.options.explicitRoot && context.options.explicitTarget,
+    fromBase: context.options.relativeTo
+  };
+
+  if (!rebaseOpts.absolute && !rebaseOpts.relative)
+    return data;
+
+  if (rebaseOpts.absolute && context.options.explicitTarget)
+    context.warnings.push('Both \'root\' and output file given so rebasing URLs as absolute paths');
+
+  if (rebaseOpts.absolute)
+    rebaseOpts.toBase = path.resolve(context.options.root);
+
+  if (rebaseOpts.relative)
+    rebaseOpts.toBase = path.resolve(context.options.target);
+
+  if (!rebaseOpts.fromBase || !rebaseOpts.toBase)
+    return data;
+
+  return rewriteUrls(data, rebaseOpts, context);
+}
+
+module.exports = rebaseUrls;

node_modules/clean-css/lib/urls/reduce.js

@@ -0,0 +1,154 @@
+var split = require('../utils/split');
+
+var URL_PREFIX = 'url(';
+var UPPERCASE_URL_PREFIX = 'URL(';
+var URL_SUFFIX = ')';
+var SINGLE_QUOTE_URL_SUFFIX = '\')';
+var DOUBLE_QUOTE_URL_SUFFIX = '")';
+
+var DATA_URI_PREFIX_PATTERN = /^\s*['"]?\s*data:/;
+var DATA_URI_TRAILER_PATTERN = /[\s\};,\/!]/;
+
+var IMPORT_URL_PREFIX = '@import';
+var UPPERCASE_IMPORT_URL_PREFIX = '@IMPORT';
+
+var COMMENT_END_MARKER = /\*\//;
+
+function byUrl(data, context, callback) {
+  var nextStart = 0;
+  var nextStartUpperCase = 0;
+  var nextEnd = 0;
+  var firstMatch;
+  var isDataURI = false;
+  var cursor = 0;
+  var tempData = [];
+  var hasUppercaseUrl = data.indexOf(UPPERCASE_URL_PREFIX) > -1;
+
+  for (; nextEnd < data.length;) {
+    nextStart = data.indexOf(URL_PREFIX, nextEnd);
+    nextStartUpperCase = hasUppercaseUrl ? data.indexOf(UPPERCASE_URL_PREFIX, nextEnd) : -1;
+    if (nextStart == -1 && nextStartUpperCase == -1)
+      break;
+
+    if (nextStart == -1 && nextStartUpperCase > -1)
+      nextStart = nextStartUpperCase;
+
+    if (data[nextStart + URL_PREFIX.length] == '"') {
+      nextEnd = data.indexOf(DOUBLE_QUOTE_URL_SUFFIX, nextStart);
+    } else if (data[nextStart + URL_PREFIX.length] == '\'') {
+      nextEnd = data.indexOf(SINGLE_QUOTE_URL_SUFFIX, nextStart);
+    } else {
+      isDataURI = DATA_URI_PREFIX_PATTERN.test(data.substring(nextStart + URL_PREFIX.length));
+
+      if (isDataURI) {
+        firstMatch = split(data.substring(nextStart), DATA_URI_TRAILER_PATTERN, false, '(', ')', true).pop();
+
+        if (firstMatch && firstMatch[firstMatch.length - 1] == URL_SUFFIX) {
+          nextEnd = nextStart + firstMatch.length - URL_SUFFIX.length;
+        } else {
+          nextEnd = -1;
+        }
+      } else {
+        nextEnd = data.indexOf(URL_SUFFIX, nextStart);
+      }
+    }
+
+
+    // Following lines are a safety mechanism to ensure
+    // incorrectly terminated urls are processed correctly.
+    if (nextEnd == -1) {
+      nextEnd = data.indexOf('}', nextStart);
+
+      if (nextEnd == -1)
+        nextEnd = data.length;
+      else
+        nextEnd--;
+
+      context.warnings.push('Broken URL declaration: \'' + data.substring(nextStart, nextEnd + 1) + '\'.');
+    } else {
+      if (data[nextEnd] != URL_SUFFIX)
+        nextEnd = data.indexOf(URL_SUFFIX, nextEnd);
+    }
+
+    tempData.push(data.substring(cursor, nextStart));
+
+    var url = data.substring(nextStart, nextEnd + 1);
+    callback(url, tempData);
+
+    cursor = nextEnd + 1;
+  }
+
+  return tempData.length > 0 ?
+    tempData.join('') + data.substring(cursor, data.length) :
+    data;
+}
+
+function byImport(data, context, callback) {
+  var nextImport = 0;
+  var nextImportUpperCase = 0;
+  var nextStart = 0;
+  var nextEnd = 0;
+  var cursor = 0;
+  var tempData = [];
+  var nextSingleQuote = 0;
+  var nextDoubleQuote = 0;
+  var untilNextQuote;
+  var withQuote;
+  var SINGLE_QUOTE = '\'';
+  var DOUBLE_QUOTE = '"';
+
+  for (; nextEnd < data.length;) {
+    nextImport = data.indexOf(IMPORT_URL_PREFIX, nextEnd);
+    nextImportUpperCase = data.indexOf(UPPERCASE_IMPORT_URL_PREFIX, nextEnd);
+    if (nextImport == -1 && nextImportUpperCase == -1)
+      break;
+
+    if (nextImport > -1 && nextImportUpperCase > -1 && nextImportUpperCase < nextImport)
+      nextImport = nextImportUpperCase;
+
+    nextSingleQuote = data.indexOf(SINGLE_QUOTE, nextImport);
+    nextDoubleQuote = data.indexOf(DOUBLE_QUOTE, nextImport);
+
+    if (nextSingleQuote > -1 && nextDoubleQuote > -1 && nextSingleQuote < nextDoubleQuote) {
+      nextStart = nextSingleQuote;
+      withQuote = SINGLE_QUOTE;
+    } else if (nextSingleQuote > -1 && nextDoubleQuote > -1 && nextSingleQuote > nextDoubleQuote) {
+      nextStart = nextDoubleQuote;
+      withQuote = DOUBLE_QUOTE;
+    } else if (nextSingleQuote > -1) {
+      nextStart = nextSingleQuote;
+      withQuote = SINGLE_QUOTE;
+    } else if (nextDoubleQuote > -1) {
+      nextStart = nextDoubleQuote;
+      withQuote = DOUBLE_QUOTE;
+    } else {
+      break;
+    }
+
+    tempData.push(data.substring(cursor, nextStart));
+    nextEnd = data.indexOf(withQuote, nextStart + 1);
+
+    untilNextQuote = data.substring(nextImport, nextEnd);
+    if (nextEnd == -1 || /^@import\s+(url\(|__ESCAPED)/i.test(untilNextQuote) || COMMENT_END_MARKER.test(untilNextQuote)) {
+      cursor = nextStart;
+      break;
+    }
+
+    var url = data.substring(nextStart, nextEnd + 1);
+    callback(url, tempData);
+
+    cursor = nextEnd + 1;
+  }
+
+  return tempData.length > 0 ?
+    tempData.join('') + data.substring(cursor, data.length) :
+    data;
+}
+
+function reduceAll(data, context, callback) {
+  data = byUrl(data, context, callback);
+  data = byImport(data, context, callback);
+  return data;
+}
+
+module.exports = reduceAll;

node_modules/clean-css/lib/urls/rewrite.js

@@ -0,0 +1,107 @@
+var path = require('path');
+var url = require('url');
+
+var reduceUrls = require('./reduce');
+
+var isWindows = process.platform == 'win32';
+
+function isAbsolute(uri) {
+  return uri[0] == '/';
+}
+
+function isSVGMarker(uri) {
+  return uri[0] == '#';
+}
+
+function isEscaped(uri) {
+  return uri.indexOf('__ESCAPED_URL_CLEAN_CSS__') === 0;
+}
+
+function isInternal(uri) {
+  return /^\w+:\w+/.test(uri);
+}
+
+function isRemote(uri) {
+  return /^[^:]+?:\/\//.test(uri) || uri.indexOf('//') === 0;
+}
+
+function isSameOrigin(uri1, uri2) {
+  return url.parse(uri1).protocol == url.parse(uri2).protocol &&
+    url.parse(uri1).host == url.parse(uri2).host;
+}
+
+function isImport(uri) {
+  return uri.lastIndexOf('.css') === uri.length - 4;
+}
+
+function isData(uri) {
+  return uri.indexOf('data:') === 0;
+}
+
+function absolute(uri, options) {
+  return path
+    .resolve(path.join(options.fromBase || '', uri))
+    .replace(options.toBase, '');
+}
+
+function relative(uri, options) {
+  return path.relative(options.toBase, path.join(options.fromBase || '', uri));
+}
+
+function normalize(uri) {
+  return isWindows ? uri.replace(/\\/g, '/') : uri;
+}
+
+function rebase(uri, options) {
+  if (isAbsolute(uri) || isSVGMarker(uri) || isEscaped(uri) || isInternal(uri))
+    return uri;
+
+  if (options.rebase === false && !isImport(uri))
+    return uri;
+
+  if (!options.imports && isImport(uri))
+    return uri;
+
+  if (isData(uri))
+    return '\'' + uri + '\'';
+
+  if (isRemote(uri) && !isRemote(options.toBase))
+    return uri;
+
+  if (isRemote(uri) && !isSameOrigin(uri, options.toBase))
+    return uri;
+
+  if (!isRemote(uri) && isRemote(options.toBase))
+    return url.resolve(options.toBase, uri);
+
+  return options.absolute ?
+    normalize(absolute(uri, options)) :
+    normalize(relative(uri, options));
+}
+
+function quoteFor(url) {
+  if (url.indexOf('\'') > -1)
+    return '"';
+  else if (url.indexOf('"') > -1)
+    return '\'';
+  else if (/\s/.test(url) || /[\(\)]/.test(url))
+    return '\'';
+  else
+    return '';
+}
+
+function rewriteUrls(data, options, context) {
+  return reduceUrls(data, context, function (originUrl, tempData) {
+    var url = originUrl.replace(/^(url\()?\s*['"]?|['"]?\s*\)?$/g, '');
+    var match = originUrl.match(/^(url\()?\s*(['"]).*?(['"])\s*\)?$/);
+    var quote;
+    if (!!options.urlQuotes && match && match[2] === match[3]) {
+      quote = match[2];
+    } else {
+      quote = quoteFor(url);
+    }
+    tempData.push('url(' + quote + rebase(url, options) + quote + ')');
+  });
+}
+
+module.exports = rewriteUrls;

node_modules/clean-css/lib/utils/clone-array.js

@@ -0,0 +1,12 @@
+function cloneArray(array) {
+  var cloned = array.slice(0);
+
+  for (var i = 0, l = cloned.length; i < l; i++) {
+    if (Array.isArray(cloned[i]))
+      cloned[i] = cloneArray(cloned[i]);
+  }
+
+  return cloned;
+}
+
+module.exports = cloneArray;

node_modules/clean-css/lib/utils/compatibility.js

@@ -0,0 +1,162 @@
+var util = require('util');
+
+var DEFAULTS = {
+  '*': {
+    colors: {
+      opacity: true // rgba / hsla
+    },
+    properties: {
+      backgroundClipMerging: false, // background-clip to shorthand
+      backgroundOriginMerging: false, // background-origin to shorthand
+      backgroundSizeMerging: false, // background-size to shorthand
+      colors: true, // any kind of color transformations, like `#ff00ff` to `#f0f` or `#fff` into `red`
+      ieBangHack: false, // !ie suffix hacks on IE<8
+      iePrefixHack: false, // underscore / asterisk prefix hacks on IE
+      ieSuffixHack: true, // \9 suffix hacks on IE6-9
+      merging: true, // merging properties into one
+      shorterLengthUnits: false, // optimize pixel units into `pt`, `pc` or `in` units
+      spaceAfterClosingBrace: true, // 'url() no-repeat' to 'url()no-repeat'
+      urlQuotes: false, // whether to wrap content of `url()` into quotes or not
+      zeroUnits: true // 0[unit] -> 0
+    },
+    selectors: {
+      adjacentSpace: false, // div+ nav Android stock browser hack
+      ie7Hack: false, // *+html hack
+      special: /(\-moz\-|\-ms\-|\-o\-|\-webkit\-|:dir\([a-z-]*\)|:first(?![a-z-])|:fullscreen|:left|:read-only|:read-write|:right|:placeholder|:host|:content|\/deep\/|:shadow|:selection|^,)/ // special selectors which prevent merging
+    },
+    units: {
+      ch: true,
+      in: true,
+      pc: true,
+      pt: true,
+      rem: true,
+      vh: true,
+      vm: true, // vm is vmin on IE9+ see https://developer.mozilla.org/en-US/docs/Web/CSS/length
+      vmax: true,
+      vmin: true,
+      vw: true
+    }
+  },
+  'ie8': {
+    colors: {
+      opacity: false
+    },
+    properties: {
+      backgroundClipMerging: false,
+      backgroundOriginMerging: false,
+      backgroundSizeMerging: false,
+      colors: true,
+      ieBangHack: false,
+      iePrefixHack: true,
+      ieSuffixHack: true,
+      merging: false,
+      shorterLengthUnits: false,
+      spaceAfterClosingBrace: true,
+      urlQuotes: false,
+      zeroUnits: true
+    },
+    selectors: {
+      adjacentSpace: false,
+      ie7Hack: false,
+      special: /(\-moz\-|\-ms\-|\-o\-|\-webkit\-|:root|:nth|:first\-of|:last|:only|:empty|:target|:checked|::selection|:enabled|:disabled|:not|:placeholder|:host|::content|\/deep\/|::shadow|^,)/
+    },
+    units: {
+      ch: false,
+      in: true,
+      pc: true,
+      pt: true,
+      rem: false,
+      vh: false,
+      vm: false,
+      vmax: false,
+      vmin: false,
+      vw: false
+    }
+  },
+  'ie7': {
+    colors: {
+      opacity: false
+    },
+    properties: {
+      backgroundClipMerging: false,
+      backgroundOriginMerging: false,
+      backgroundSizeMerging: false,
+      colors: true,
+      ieBangHack: true,
+      iePrefixHack: true,
+      ieSuffixHack: true,
+      merging: false,
+      shorterLengthUnits: false,
+      spaceAfterClosingBrace: true,
+      urlQuotes: false,
+      zeroUnits: true
+    },
+    selectors: {
+      adjacentSpace: false,
+      ie7Hack: true,
+      special: /(\-moz\-|\-ms\-|\-o\-|\-webkit\-|:focus|:before|:after|:root|:nth|:first\-of|:last|:only|:empty|:target|:checked|::selection|:enabled|:disabled|:not|:placeholder|:host|::content|\/deep\/|::shadow|^,)/
+    },
+    units: {
+      ch: false,
+      in: true,
+      pc: true,
+      pt: true,
+      rem: false,
+      vh: false,
+      vm: false,
+      vmax: false,
+      vmin: false,
+      vw: false,
+    }
+  }
+};
+
+function Compatibility(source) {
+  this.source = source || {};
+}
+
+function merge(source, target) {
+  for (var key in source) {
+    var value = source[key];
+
+    if (typeof value === 'object' && !util.isRegExp(value))
+      target[key] = merge(value, target[key] || {});
+    else
+      target[key] = key in target ? target[key] : value;
+  }
+
+  return target;
+}
+
+function calculateSource(source) {
+  if (typeof source == 'object')
+    return source;
+
+  if (!/[,\+\-]/.test(source))
+    return DEFAULTS[source] || DEFAULTS['*'];
+
+  var parts = source.split(',');
+  var template = parts[0] in DEFAULTS ?
+    DEFAULTS[parts.shift()] :
+    DEFAULTS['*'];
+
+  source = {};
+
+  parts.forEach(function (part) {
+    var isAdd = part[0] == '+';
+    var key = part.substring(1).split('.');
+    var group = key[0];
+    var option = key[1];
+
+    source[group] = source[group] || {};
+    source[group][option] = isAdd;
+  });
+
+  return merge(template, source);
+}
+
+Compatibility.prototype.toOptions = function () {
+  return merge(DEFAULTS['*'], calculateSource(this.source));
+};
+
+module.exports = Compatibility;

node_modules/clean-css/lib/utils/input-source-map-tracker.js

@@ -0,0 +1,284 @@
+var SourceMapConsumer = require('source-map').SourceMapConsumer;
+
+var fs = require('fs');
+var path = require('path');
+var http = require('http');
+var https = require('https');
+var url = require('url');
+
+var override = require('../utils/object.js').override;
+
+var MAP_MARKER = /\/\*# sourceMappingURL=(\S+) \*\//;
+var REMOTE_RESOURCE = /^(https?:)?\/\//;
+var DATA_URI = /^data:(\S*?)?(;charset=[^;]+)?(;[^,]+?)?,(.+)/;
+
+var unescape = global.unescape;
+
+function InputSourceMapStore(outerContext) {
+  this.options = outerContext.options;
+  this.errors = outerContext.errors;
+  this.warnings = outerContext.warnings;
+  this.sourceTracker = outerContext.sourceTracker;
+  this.timeout = this.options.inliner.timeout;
+  this.requestOptions = this.options.inliner.request;
+  this.localOnly = outerContext.localOnly;
+  this.relativeTo = outerContext.options.target || process.cwd();
+
+  this.maps = {};
+  this.sourcesContent = {};
+}
+
+function fromString(self, _, whenDone) {
+  self.trackLoaded(undefined, undefined, self.options.sourceMap);
+  return whenDone();
+}
+
+function fromSource(self, data, whenDone, context) {
+  var nextAt = 0;
+
+  function proceedToNext() {
+    context.cursor += nextAt + 1;
+    fromSource(self, data, whenDone, context);
+  }
+
+  while (context.cursor < data.length) {
+    var fragment = data.substring(context.cursor);
+
+    var markerStartMatch = self.sourceTracker.nextStart(fragment) || { index: -1 };
+    var markerEndMatch = self.sourceTracker.nextEnd(fragment) || { index: -1 };
+    var mapMatch = MAP_MARKER.exec(fragment) || { index: -1 };
+    var sourceMapFile = mapMatch[1];
+
+    nextAt = data.length;
+    if (markerStartMatch.index > -1)
+      nextAt = markerStartMatch.index;
+    if (markerEndMatch.index > -1 && markerEndMatch.index < nextAt)
+      nextAt = markerEndMatch.index;
+    if (mapMatch.index > -1 && mapMatch.index < nextAt)
+      nextAt = mapMatch.index;
+
+    if (nextAt == data.length)
+      break;
+
+    if (nextAt == markerStartMatch.index) {
+      context.files.push(markerStartMatch.filename);
+    } else if (nextAt == markerEndMatch.index) {
+      context.files.pop();
+    } else if (nextAt == mapMatch.index) {
+      var isRemote = /^https?:\/\//.test(sourceMapFile) || /^\/\//.test(sourceMapFile);
+      var isDataUri = DATA_URI.test(sourceMapFile);
+
+      if (isRemote) {
+        return fetchMapFile(self, sourceMapFile, context, proceedToNext);
+      } else {
+        var sourceFile = context.files[context.files.length - 1];
+        var sourceMapPath, sourceMapData;
+        var sourceDir = sourceFile ? path.dirname(sourceFile) : self.options.relativeTo;
+
+        if (isDataUri) {
+          // source map's path is the same as the source file it comes from
+          sourceMapPath = path.resolve(self.options.root, sourceFile || '');
+          sourceMapData = fromDataUri(sourceMapFile);
+        } else {
+          sourceMapPath = path.resolve(self.options.root, path.join(sourceDir || '', sourceMapFile));
+          sourceMapData = fs.readFileSync(sourceMapPath, 'utf-8');
+        }
+        self.trackLoaded(sourceFile || undefined, sourceMapPath, sourceMapData);
+      }
+    }
+
+    context.cursor += nextAt + 1;
+  }
+
+  return whenDone();
+}
+
+function fromDataUri(uriString) {
+  var match = DATA_URI.exec(uriString);
+  var charset = match[2] ? match[2].split(/[=;]/)[2] : 'us-ascii';
+  var encoding = match[3] ? match[3].split(';')[1] : 'utf8';
+  var data = encoding == 'utf8' ? unescape(match[4]) : match[4];
+
+  var buffer = new Buffer(data, encoding);
+  buffer.charset = charset;
+
+  return buffer.toString();
+}
+
+function fetchMapFile(self, sourceUrl, context, done) {
+  fetch(self, sourceUrl, function (data) {
+    self.trackLoaded(context.files[context.files.length - 1] || undefined, sourceUrl, data);
+    done();
+  }, function (message) {
+    context.errors.push('Broken source map at "' + sourceUrl + '" - ' + message);
+    return done();
+  });
+}
+
+function fetch(self, path, onSuccess, onFailure) {
+  var protocol = path.indexOf('https') === 0 ? https : http;
+  var requestOptions = override(url.parse(path), self.requestOptions);
+  var errorHandled = false;
+
+  protocol
+    .get(requestOptions, function (res) {
+      if (res.statusCode < 200 || res.statusCode > 299)
+        return onFailure(res.statusCode);
+
+      var chunks = [];
+      res.on('data', function (chunk) {
+        chunks.push(chunk.toString());
+      });
+      res.on('end', function () {
+        onSuccess(chunks.join(''));
+      });
+    })
+    .on('error', function (res) {
+      if (errorHandled)
+        return;
+
+      onFailure(res.message);
+      errorHandled = true;
+    })
+    .on('timeout', function () {
+      if (errorHandled)
+        return;
+
+      onFailure('timeout');
+      errorHandled = true;
+    })
+    .setTimeout(self.timeout);
+}
+
+function originalPositionIn(trackedSource, line, column, token, allowNFallbacks) {
+  var originalPosition;
+  var maxRange = token.length;
+  var position = {
+    line: line,
+    column: column + maxRange
+  };
+
+  while (maxRange-- > 0) {
+    position.column--;
+    originalPosition = trackedSource.data.originalPositionFor(position);
+
+    if (originalPosition)
+      break;
+  }
+
+  if (originalPosition.line === null && line > 1 && allowNFallbacks > 0)
+    return originalPositionIn(trackedSource, line - 1, column, token, allowNFallbacks - 1);
+
+  if (trackedSource.path && originalPosition.source) {
+    originalPosition.source = REMOTE_RESOURCE.test(trackedSource.path) ?
+      url.resolve(trackedSource.path, originalPosition.source) :
+      path.join(trackedSource.path, originalPosition.source);
+
+    originalPosition.sourceResolved = true;
+  }
+
+  return originalPosition;
+}
+
+function trackContentSources(self, sourceFile) {
+  var consumer = self.maps[sourceFile].data;
+  var isRemote = REMOTE_RESOURCE.test(sourceFile);
+  var sourcesMapping = {};
+
+  consumer.sources.forEach(function (file, index) {
+    var uniquePath = isRemote ?
+      url.resolve(path.dirname(sourceFile), file) :
+      path.relative(self.relativeTo, path.resolve(path.dirname(sourceFile || '.'), file));
+
+    sourcesMapping[uniquePath] = consumer.sourcesContent && consumer.sourcesContent[index];
+  });
+  self.sourcesContent[sourceFile] = sourcesMapping;
+}
+
+function _resolveSources(self, remaining, whenDone) {
+  function processNext() {
+    return _resolveSources(self, remaining, whenDone);
+  }
+
+  if (remaining.length === 0)
+    return whenDone();
+
+  var current = remaining.shift();
+  var sourceFile = current[0];
+  var originalFile = current[1];
+  var isRemote = REMOTE_RESOURCE.test(sourceFile);
+
+  if (isRemote && self.localOnly) {
+    self.warnings.push('No callback given to `#minify` method, cannot fetch a remote file from "' + originalFile + '"');
+    return processNext();
+  }
+
+  if (isRemote) {
+    fetch(self, originalFile, function (data) {
+      self.sourcesContent[sourceFile][originalFile] = data;
+      processNext();
+    }, function (message) {
+      self.warnings.push('Broken original source file at "' + originalFile + '" - ' + message);
+      processNext();
+    });
+  } else {
+    var fullPath = path.join(self.options.root, originalFile);
+    if (fs.existsSync(fullPath))
+      self.sourcesContent[sourceFile][originalFile] = fs.readFileSync(fullPath, 'utf-8');
+    else
+      self.warnings.push('Missing original source file at "' + fullPath + '".');
+    return processNext();
+  }
+}
+
+InputSourceMapStore.prototype.track = function (data, whenDone) {
+  return typeof this.options.sourceMap == 'string' ?
+    fromString(this, data, whenDone) :
+    fromSource(this, data, whenDone, { files: [], cursor: 0, errors: this.errors });
+};
+
+InputSourceMapStore.prototype.trackLoaded = function (sourcePath, mapPath, mapData) {
+  var relativeTo = this.options.explicitTarget ? this.options.target : this.options.root;
+  var isRemote = REMOTE_RESOURCE.test(sourcePath);
+
+  if (mapPath) {
+    mapPath = isRemote ?
+      path.dirname(mapPath) :
+      path.dirname(path.relative(relativeTo, mapPath));
+  }
+
+  this.maps[sourcePath] = {
+    path: mapPath,
+    data: new SourceMapConsumer(mapData)
+  };
+
+  trackContentSources(this, sourcePath);
+};
+
+InputSourceMapStore.prototype.isTracking = function (source) {
+  return !!this.maps[source];
+};
+
+InputSourceMapStore.prototype.originalPositionFor = function (sourceInfo, token, allowNFallbacks) {
+  return originalPositionIn(this.maps[sourceInfo.source], sourceInfo.line, sourceInfo.column, token, allowNFallbacks);
+};
+
+InputSourceMapStore.prototype.sourcesContentFor = function (contextSource) {
+  return this.sourcesContent[contextSource];
+};
+
+InputSourceMapStore.prototype.resolveSources = function (whenDone) {
+  var toResolve = [];
+
+  for (var sourceFile in this.sourcesContent) {
+    var contents = this.sourcesContent[sourceFile];
+    for (var originalFile in contents) {
+      if (!contents[originalFile])
+        toResolve.push([sourceFile, originalFile]);
+    }
+  }
+
+  return _resolveSources(this, toResolve, whenDone);
+};
+
+module.exports = InputSourceMapStore;

node_modules/clean-css/lib/utils/object.js

@@ -0,0 +1,11 @@
+module.exports = {
+  override: function (source1, source2) {
+    var target = {};
+    for (var key1 in source1)
+      target[key1] = source1[key1];
+    for (var key2 in source2)
+      target[key2] = source2[key2];
+
+    return target;
+  }
+};

node_modules/clean-css/lib/utils/quote-scanner.js

@@ -0,0 +1,119 @@
+var COMMENT_START_MARK = '/*';
+
+function QuoteScanner(data) {
+  this.data = data;
+}
+
+var findQuoteEnd = function (data, matched, cursor, oldCursor) {
+  var commentEndMark = '*/';
+  var escapeMark = '\\';
+  var blockEndMark = '}';
+  var dataPrefix = data.substring(oldCursor, cursor);
+  var commentEndedAt = dataPrefix.lastIndexOf(commentEndMark, cursor);
+  var commentStartedAt = findLastCommentStartedAt(dataPrefix, cursor);
+  var commentStarted = false;
+
+  if (commentEndedAt >= cursor && commentStartedAt > -1)
+    commentStarted = true;
+  if (commentStartedAt < cursor && commentStartedAt > commentEndedAt)
+    commentStarted = true;
+
+  if (commentStarted) {
+    var commentEndsAt = data.indexOf(commentEndMark, cursor);
+    if (commentEndsAt > -1)
+      return commentEndsAt;
+
+    commentEndsAt = data.indexOf(blockEndMark, cursor);
+    return commentEndsAt > -1 ? commentEndsAt - 1 : data.length;
+  }
+
+  while (true) {
+    if (data[cursor] === undefined)
+      break;
+    if (data[cursor] == matched && (data[cursor - 1] != escapeMark || data[cursor - 2] == escapeMark))
+      break;
+
+    cursor++;
+  }
+
+  return cursor;
+};
+
+function findLastCommentStartedAt(data, cursor) {
+  var position = cursor;
+
+  while (position > -1) {
+    position = data.lastIndexOf(COMMENT_START_MARK, position);
+
+    if (position > -1 && data[position - 1] != '*') {
+      break;
+    } else {
+      position--;
+    }
+  }
+
+  return position;
+}
+
+function findNext(data, mark, startAt) {
+  var escapeMark = '\\';
+  var candidate = startAt;
+
+  while (true) {
+    candidate = data.indexOf(mark, candidate + 1);
+    if (candidate == -1)
+      return -1;
+    if (data[candidate - 1] != escapeMark)
+      return candidate;
+  }
+}
+
+QuoteScanner.prototype.each = function (callback) {
+  var data = this.data;
+  var tempData = [];
+  var nextStart = 0;
+  var nextEnd = 0;
+  var cursor = 0;
+  var matchedMark = null;
+  var singleMark = '\'';
+  var doubleMark = '"';
+  var dataLength = data.length;
+
+  for (; nextEnd < data.length;) {
+    var nextStartSingle = findNext(data, singleMark, nextEnd);
+    var nextStartDouble = findNext(data, doubleMark, nextEnd);
+
+    if (nextStartSingle == -1)
+      nextStartSingle = dataLength;
+    if (nextStartDouble == -1)
+      nextStartDouble = dataLength;
+
+    if (nextStartSingle < nextStartDouble) {
+      nextStart = nextStartSingle;
+      matchedMark = singleMark;
+    } else {
+      nextStart = nextStartDouble;
+      matchedMark = doubleMark;
+    }
+
+    if (nextStart == -1)
+      break;
+
+    nextEnd = findQuoteEnd(data, matchedMark, nextStart + 1, cursor);
+    if (nextEnd == -1)
+      break;
+
+    var text = data.substring(nextStart, nextEnd + 1);
+    tempData.push(data.substring(cursor, nextStart));
+    if (text.length > 0)
+      callback(text, tempData, nextStart);
+
+    cursor = nextEnd + 1;
+  }
+
+  return tempData.length > 0 ?
+    tempData.join('') + data.substring(cursor, data.length) :
+    data;
+};
+
+module.exports = QuoteScanner;

node_modules/clean-css/lib/utils/source-reader.js

@@ -0,0 +1,96 @@
+var path = require('path');
+var rewriteUrls = require('../urls/rewrite');
+
+var REMOTE_RESOURCE = /^(https?:)?\/\//;
+
+function SourceReader(context, data) {
+  this.outerContext = context;
+  this.data = data;
+  this.sources = {};
+}
+
+SourceReader.prototype.sourceAt = function (path) {
+  return this.sources[path];
+};
+
+SourceReader.prototype.trackSource = function (path, source) {
+  this.sources[path] = {};
+  this.sources[path][path] = source;
+};
+
+SourceReader.prototype.toString = function () {
+  if (typeof this.data == 'string')
+    return fromString(this);
+  if (Buffer.isBuffer(this.data))
+    return fromBuffer(this);
+  if (Array.isArray(this.data))
+    return fromArray(this);
+
+  return fromHash(this);
+};
+
+function fromString(self) {
+  var data = self.data;
+  self.trackSource(undefined, data);
+  return data;
+}
+
+function fromBuffer(self) {
+  var data = self.data.toString();
+  self.trackSource(undefined, data);
+  return data;
+}
+
+function fromArray(self) {
+  return self.data
+    .map(function (source) {
+      return self.outerContext.options.processImport === false ?
+        source + '@shallow' :
+        source;
+    })
+    .map(function (source) {
+      return !self.outerContext.options.relativeTo || /^https?:\/\//.test(source) ?
+        source :
+        path.relative(self.outerContext.options.relativeTo, source);
+    })
+    .map(function (source) { return '@import url(' + source + ');'; })
+    .join('');
+}
+
+function fromHash(self) {
+  var data = [];
+  var toBase = path.resolve(self.outerContext.options.target || self.outerContext.options.root);
+
+  for (var source in self.data) {
+    var styles = self.data[source].styles;
+    var inputSourceMap = self.data[source].sourceMap;
+    var isRemote = REMOTE_RESOURCE.test(source);
+    var absoluteSource = isRemote ? source : path.resolve(source);
+    var absoluteSourcePath = path.dirname(absoluteSource);
+
+    var rewriteOptions = {
+      absolute: self.outerContext.options.explicitRoot,
+      relative: !self.outerContext.options.explicitRoot,
+      imports: true,
+      rebase: self.outerContext.options.rebase,
+      fromBase: absoluteSourcePath,
+      toBase: isRemote ? absoluteSourcePath : toBase,
+      urlQuotes: self.outerContext.options.compatibility.properties.urlQuotes
+    };
+    styles = rewriteUrls(styles, rewriteOptions, self.outerContext);
+
+    self.trackSource(source, styles);
+
+    styles = self.outerContext.sourceTracker.store(source, styles);
+
+    // here we assume source map lies in the same directory as `source` does
+    if (self.outerContext.options.sourceMap && inputSourceMap)
+      self.outerContext.inputSourceMapTracker.trackLoaded(source, source, inputSourceMap);
+
+    data.push(styles);
+  }
+
+  return data.join('');
+}
+
+module.exports = SourceReader;

node_modules/clean-css/lib/utils/source-tracker.js

@@ -0,0 +1,31 @@
+function SourceTracker() {
+  this.sources = [];
+}
+
+SourceTracker.prototype.store = function (filename, data) {
+  this.sources.push(filename);
+
+  return '__ESCAPED_SOURCE_CLEAN_CSS' + (this.sources.length - 1) + '__' +
+    data +
+    '__ESCAPED_SOURCE_END_CLEAN_CSS__';
+};
+
+SourceTracker.prototype.nextStart = function (data) {
+  var next = /__ESCAPED_SOURCE_CLEAN_CSS(\d+)__/.exec(data);
+
+  return next ?
+    { index: next.index, filename: this.sources[~~next[1]] } :
+    null;
+};
+
+SourceTracker.prototype.nextEnd = function (data) {
+  return /__ESCAPED_SOURCE_END_CLEAN_CSS__/g.exec(data);
+};
+
+SourceTracker.prototype.removeAll = function (data) {
+  return data
+    .replace(/__ESCAPED_SOURCE_CLEAN_CSS\d+__/g, '')
+    .replace(/__ESCAPED_SOURCE_END_CLEAN_CSS__/g, '');
+};
+
+module.exports = SourceTracker;

node_modules/clean-css/lib/utils/split.js

@@ -0,0 +1,53 @@
+function split(value, separator, includeSeparator, openLevel, closeLevel, firstOnly) {
+  var withRegex = typeof separator != 'string';
+  var hasSeparator = withRegex ?
+    separator.test(value) :
+    value.indexOf(separator);
+
+  if (!hasSeparator)
+    return [value];
+
+  openLevel = openLevel || '(';
+  closeLevel = closeLevel || ')';
+
+  if (value.indexOf(openLevel) == -1 && !includeSeparator && !firstOnly)
+    return value.split(separator);
+
+  var level = 0;
+  var cursor = 0;
+  var lastStart = 0;
+  var len = value.length;
+  var tokens = [];
+
+  while (cursor < len) {
+    if (value[cursor] == openLevel) {
+      level++;
+    } else if (value[cursor] == closeLevel) {
+      level--;
+    }
+
+    if (level === 0 && cursor > 0 && cursor + 1 < len && (withRegex ? separator.test(value[cursor]) : value[cursor] == separator)) {
+      tokens.push(value.substring(lastStart, cursor + (includeSeparator ? 1 : 0)));
+      lastStart = cursor + 1;
+
+      if (firstOnly && tokens.length == 1) {
+        break;
+      }
+    }
+
+    cursor++;
+  }
+
+  if (lastStart < cursor + 1) {
+    var lastValue = value.substring(lastStart);
+    var lastCharacter = lastValue[lastValue.length - 1];
+    if (!includeSeparator && (withRegex ? separator.test(lastCharacter) : lastCharacter == separator))
+      lastValue = lastValue.substring(0, lastValue.length - 1);
+
+    tokens.push(lastValue);
+  }
+
+  return tokens;
+}
+
+module.exports = split;